{"id":601,"date":"2013-04-22T14:58:00","date_gmt":"2013-04-22T06:58:00","guid":{"rendered":"http:\/\/www.liuwenhao.me\/?p=601"},"modified":"2021-11-22T13:45:58","modified_gmt":"2021-11-22T05:45:58","slug":"%e5%8e%9f%e5%88%9b%e6%95%99%e7%a8%8blabwindowscvi%e5%85%a5%e9%97%a8%e4%b9%8b%e7%ac%ac%e5%85%ad%e7%ab%a0%ef%bc%9a%e7%bb%bc%e5%90%88%e5%ae%9e%e4%be%8b%ef%bc%9a%e8%bf%9c%e7%a8%8b%e7%9b%91%e6%8e%a7","status":"publish","type":"post","link":"https:\/\/www.liuwenhao.me\/?p=601","title":{"rendered":"[\u539f\u521b\u6559\u7a0b]LabWindows\/CVI\u5165\u95e8\u4e4b\u7b2c\u516d\u7ae0\uff1a\u7efc\u5408\u5b9e\u4f8b\uff1a\u8fdc\u7a0b\u76d1\u63a7\u7cfb\u7edf"},"content":{"rendered":"<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">\u5bfc\u822a\u76ee\u5f55<\/p><ul class=\"toc_list\"><li><a href=\"#61\">6.1 \u4efb\u52a1\u63cf\u8ff0<\/a><\/li><li><a href=\"#62\">6.2 \u7cfb\u7edf\u6574\u4f53\u8bbe\u8ba1<\/a><\/li><li><a href=\"#63\">6.3 \u670d\u52a1\u5668\u7aef\u56fe\u50cf\u91c7\u96c6\u8bbe\u8ba1<\/a><ul><li><a href=\"#nbsp_631_VFW\">&nbsp; 6.3.1 VFW\u5e93<\/a><\/li><li><a href=\"#nbsp_632_UI\">&nbsp; 6.3.2 UI\u8bbe\u8ba1<\/a><\/li><li><a href=\"#nbsp_633\">&nbsp; 6.3.3 \u7a0b\u5e8f\u8bbe\u8ba1<\/a><\/li><\/ul><\/li><li><a href=\"#64\">6.4 \u670d\u52a1\u5668\u7aef\u7f51\u7edc\u670d\u52a1\u8bbe\u8ba1<\/a><ul><li><a href=\"#nbsp_641_HTTP\">&nbsp; 6.4.1 HTTP\u62a5\u5934\u5206\u6790\u4e0e\u56de\u53d1\u6570\u636e\u683c\u5f0f\u5206\u6790<\/a><\/li><li><a href=\"#nbsp_642_UI\">&nbsp; 6.4.2 UI\u8bbe\u8ba1<\/a><\/li><li><a href=\"#nbspnbsp_643\">&nbsp;&nbsp; 6.4.3 \u7a0b\u5e8f\u8bbe\u8ba1<\/a><\/li><\/ul><\/li><li><a href=\"#65\">6.5 \u7f51\u9875\u524d\u7aef\u8bbe\u8ba1<\/a><\/li><li><a href=\"#66\">6.6 \u7ed3\u675f\u8bed<\/a><\/li><li><a href=\"#67\">6.7 \u63a2\u7d22\u4e0e\u5b9e\u9a8c<\/a><ul><li><a href=\"#nbsp_671\">&nbsp; 6.7.1 \u5b9e\u9a8c<\/a><\/li><li><a href=\"#nbsp_672\">&nbsp; 6.7.2 \u63a2\u7d22<\/a><\/li><\/ul><\/li><\/ul><\/div>\n<h1><span id=\"61\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">6.1 \u4efb\u52a1\u63cf\u8ff0<\/span><\/span><\/h1>\n<h3><\/h3>\n<p>\u5728\u672c\u8282\u4e2d\uff0c\u6211\u4eec\u5c06\u5b8c\u6210\uff1a<\/p>\n<p>\u00d8 \u4e00\u4e2a\u53ef\u4ee5\u63d0\u4f9b\u89c6\u9891\u6e90\u7684\u670d\u52a1\u5668\u7a0b\u5e8f<\/p>\n<p>\u00d8 \u4e00\u4e2a\u53ef\u4ee5\u94fe\u63a5\u5230\u6307\u5b9a\u89c6\u9891\u6e90\u7684\u7f51\u7ad9<\/p>\n<p>\u901a\u8fc7\u672c\u8282\u7684\u7a0b\u5e8f\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u4efb\u610f\u7ec8\u7aef\uff08\u542b\u79fb\u52a8\u7ec8\u7aef\uff09\u4e0a\u67e5\u770b\u4efb\u610f\u89c6\u9891\u6e90\u4f20\u56de\u7684\u5b9e\u65f6\u76d1\u63a7\u89c6\u9891\u3002<\/p>\n<p>\u5728\u672c\u8282\u4e2d\uff0c\u6211\u4eec\u6700\u7ec8\u5b8c\u6210\u5982\u56fe 6\u20111\u548c\u56fe 6\u20112\u6240\u793a\u7684\u7a0b\u5e8f\u3002<\/p>\n<p>\u5176\u4e2d\uff0c\u670d\u52a1\u5668\u7aef\u89c6\u9891\u6e90\u63d0\u4f9b\u7a0b\u5e8f\u5728CVI\u5f00\u53d1\u73af\u5883\u4e0b\u4f7f\u7528C\u8bed\u8a00\u5b8c\u6210\uff0c\u7f51\u7ad9\u4f7f\u7528jQuery+Ajax+JSON\u7684\u65b9\u6848\u5728Apache\u4e0b\u5b8c\u6210\u3002<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/1.jpg\"><img loading=\"lazy\" title=\"1\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"1\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/1_thumb.jpg\" width=\"644\" height=\"561\"><\/a><\/p>\n<p align=\"center\"><a name=\"_Ref354086095\"><\/a>\u56fe 6\u20111 \u5728\u6d4f\u89c8\u5668\u4e0a\u8bbf\u95ee\u89c6\u9891\u6e90<\/p>\n<p><!--more--><\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/2.jpg\"><img loading=\"lazy\" title=\"2\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"2\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/2_thumb.jpg\" width=\"471\" height=\"347\"><\/a><\/p>\n<p align=\"center\"><a name=\"_Ref354086097\"><\/a>\u56fe 6\u20112 \u670d\u52a1\u7aef\u7a0b\u5e8f<\/p>\n<h1><span id=\"62\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">6.2 \u7cfb\u7edf\u6574\u4f53\u8bbe\u8ba1<\/span><\/span><\/h1>\n<h3><\/h3>\n<p><b>\u6444\u50cf\u5934\u9a71\u52a8\u8bbe\u8ba1<\/b><\/p>\n<p>\u5e02\u9762\u4e0a\u5e38\u89c1\u7684USB\u6444\u50cf\u5934\u5747\u4e3a\u514d\u9a71\u8bbe\u8ba1\u3002\u201c\u514d\u9a71\u201d\u7684\u610f\u601d\u5e76\u4e0d\u662f\u8bf4\u8fd9\u79cd\u6444\u50cf\u5934\u4e0d\u9700\u8981\u9a71\u52a8\u5373\u53ef\u8fd0\u884c\uff0c\u800c\u662f\u56e0\u4e3a\u76ee\u524d\u5e02\u9762\u4e0a\u4e3b\u6d41\u7684\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u5df2\u7ecf\u5305\u542b\u4e86\u8be5\u6444\u50cf\u5934\u6240\u9700\u8981\u7684\u9a71\u52a8\u7a0b\u5e8f\uff0c\u5f53\u6444\u50cf\u5934\u8fde\u63a5\u8ba1\u7b97\u673a\u540e\u65e0\u9700\u989d\u5916\u5b89\u88c5\u9a71\u52a8\u7a0b\u5e8f\u3002<\/p>\n<p>\u56e0\u4e3a\u6444\u50cf\u5934\u8fde\u63a5\u81f3\u8ba1\u7b97\u673a\u540e\u4fbf\u5df2\u7ecf\u52a0\u8f7d\u4e86\u9a71\u52a8\u7a0b\u5e8f\uff0c\u6240\u4ee5\u6211\u4eec\u4e0d\u5fc5\u4f7f\u7528CVI\u53bb\u5f00\u53d1\u9a71\u52a8\u4e86\u3002\u51b5\u4e14NI-VISA\u4e2d 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Markup Language\uff09\uff0c\u662f\u4e00\u79cd\u5141\u8bb8\u7528\u6237\u5bf9\u81ea\u5df1\u7684\u6807\u8bb0\u8bed\u8a00\u8fdb\u884c\u5b9a\u4e49\u7684\u6e90\u8bed\u8a00\uff0c\u53ef\u4ee5\u65b9\u4fbf\u7684\u4ee5\u6587\u672c\u7684\u65b9\u5f0f\u5b58\u50a8\u5404\u79cd\u7c7b\u578b\u7684\u6570\u636e\u3002\u800cJSON\uff08JavaScript Object Notation\uff09\u662f\u4e00\u79cd\u8f7b\u91cf\u7ea7\u7684\u6570\u636e\u4ea4\u6362\u65b9\u5f0f\uff0c\u53ef\u4ee5\u76f4\u63a5\u88abJavaScript\u8bc6\u522b\u5e76\u4e14\u8f6c\u6362\u6210JavaScript\u5bf9\u8c61\u3002<\/p>\n<p>\u8003\u8651\u5230JSON\u4e0eJavaScript\u8f6c\u6362\u65b9\u4fbf\u6027\u4ee5\u53caJSON\u66f4\u52a0\u7b80\u6d01\u7684\u7279\u6027\uff0c\u5728\u6b64\u6211\u4eec\u9009\u62e9JSON\u4f5c\u4e3a\u4f20\u8f93\u683c\u5f0f\u3002<\/p>\n<p><b>HTTP<\/b><b>\u8bf7\u6c42\u65b9\u5f0f\u9009\u62e9<\/b><\/p>\n<p>Ajax\uff08Asynchronous JavaScript and XML\uff0c\u5f02\u6b65\u7684JavaScript\u548cXML\uff09\uff0c\u662f\u4e00\u79cd\u7528\u4e8e\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u95f4\u8fdb\u884c\u5f02\u6b65\u7684\u6570\u636e\u4ea4\u6362\u7684\u65b9\u6cd5\u3002\u201c\u5f02\u6b65\u201d\uff0c\u662f\u4e0e\u201c\u540c\u6b65\u201d\u76f8\u5bf9\u800c\u8a00\u7684\u3002\u4e4b\u6240\u4ee5\u53eb\u505a\u201c\u5f02\u6b65\u201d\u662f\u56e0\u4e3a\u5728\u4f7f\u7528Ajax\u8fdb\u884c\u6570\u636e\u8bf7\u6c42\u4e0e\u6570\u636e\u63a5\u6536\u65f6\u65e0\u9700\u4f34\u968f\u7f51\u9875\u7684\u5237\u65b0\uff08Refresh\uff09\u4e0e\u52a0\u8f7d\uff08Load\uff09\u3002<\/p>\n<p>\u4f34\u968f\u7740\u7f51\u9875\u5237\u65b0\u7684\u6570\u636e\u52a0\u8f7d\u65b9\u5f0f\u4e25\u91cd\u5f71\u54cd\u4e86\u7528\u6237\u4f53\u9a8c\uff0c\u56e0\u6b64\u6211\u4eec\u5728\u6b64\u4f7f\u7528\u53ef\u4ee5\u8ba9\u7f51\u9875\u5c40\u90e8\u5237\u65b0\u7684Ajax\u6280\u672f\u3002<\/p>\n<p><b>\u6bcf\u5e27\u6570\u636e\u4f20\u8f93\u65b9\u5f0f\u9009\u62e9<\/b><\/p>\n<p>\u65e2\u7136\u6211\u4eec\u9009\u5b9a\u4e86\u4f7f\u7528JSON\u6240\u8c13\u6570\u636e\u4f20\u8f93\u7684\u683c\u5f0f\uff0c\u90a3\u4e48\u5f53\u7528\u6237\u8bf7\u6c42\u4e00\u5e27\u6570\u636e\u65f6\uff0c\u90a3\u4e48\u56de\u4f20\u7684JSON\u5b57\u7b26\u4e32\u4e2d\u5e94\u8be5\u5305\u542b\u4e00\u5e27\u6570\u636e\u7684\u5168\u90e8\u5185\u5bb9\u5462\uff0c\u8fd8\u662f\u4e00\u5e27\u6570\u636e\u7684URL\u5462\uff1f<\/p>\n<p>\u8003\u8651\u5230\u7528\u6237\u4f53\u9a8c\uff0c\u6211\u4eec\u5e94\u8be5\u5728\u6210\u529f\u52a0\u8f7d\u5b8c\u4e00\u5e27\u6570\u636e\u4e4b\u540e\u518d\u52a0\u8f7d\u7b2c\u4e8c\u5e27\u6570\u636e\u3002\u800c\u5728JavaScript\u4e2d\uff0c\u5f53JSON\u4f20\u8f93\u7ed3\u675f\u540e\u53ef\u4ee5\u8bbe\u5b9a\u56de\u8c03\u51fd\u6570\uff0c\u800c\u7ed9\u56fe\u7247\u7b49\u8d44\u6e90\u6587\u4ef6\u52a0\u8f7d\u7ed3\u675f\u8bbe\u7f6e\u56de\u8c03\u51fd\u6570\u8f83\u590d\u6742\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u5c3d\u53ef\u80fd\u7684\u5c06\u56fe\u7247\u7684\u5185\u5bb9\u653e\u5728JSON\u4e2d\u8fdb\u884c\u4f20\u8f93\u3002<\/p>\n<p>\u800cJSON\u5e76\u4e0d\u80fd\u5b8c\u7f8e\u7684\u652f\u6301\u4e8c\u8fdb\u5236\u6587\u4ef6\u7684\u4f20\u8f93\uff0c \u4f46\u4f7f\u7528JSON\u4f20\u8f93\u5b57\u7b26\u4e32\u6bd4\u8f83\u65b9\u4fbf\u3002\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u91c7\u53d6\u5c06\u56fe\u7247\u6587\u4ef6\u7f16\u7801Base64\u7f16\u7801\u7684\u65b9\u5f0f\uff0c\u5c06\u4e8c\u8fdb\u5236\u7684\u6587\u4ef6\u8f6c\u6362\u6210\u5b57\u7b26\u4e32\u3002<\/p>\n<p>Base64\u7f16\u7801\u662f\u4e00\u79cd\u57fa\u4e8e64\u4e2a\u53ef\u6253\u5370\u5b57\u7b26\u6765\u8868\u793a\u4e8c\u8fdb\u5236\u6570\u636e\u7684\u8868\u793a\u65b9\u6cd5[\u6765\u81ea\u7ef4\u57fa\u767e\u79d1]\uff0c\u662f\u4e00\u79cd\u5c063\u4e2a\u5b57\u8282\u8f6c\u6362\u62104\u4e2a\u53ef\u4ee5\u6253\u5370\u51fa\u6765\u7684\u5b57\u7b26\u6765\u8868\u793a\u7684\u4e00\u79cd\u65b9\u6cd5\u3002Base64\u5e38\u7528\u4e8e\u5728\u901a\u5e38\u5904\u7406\u6587\u672c\u6570\u636e\u7684\u573a\u5408\uff0c\u8868\u793a\u3001\u4f20\u8f93\u3001\u5b58\u50a8\u4e00\u4e9b\u4e8c\u8fdb\u5236\u6570\u636e\u3002\u76ee\u524d\u4e00\u822c\u7684\u6d4f\u89c8\u5668\u5747\u652f\u6301\u76f4\u63a5\u663e\u793aBase64\u7f16\u7801\u7684\u56fe\u7247\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u867d\u7136\u8f6c\u6362\u6210Base64\u7f16\u7801\u4e4b\u540e\u6587\u4ef6\u4f53\u79ef\u589e\u5927\u4e86\u7ea633%\uff0c\u4f46\u662f\u7531\u4e8e\u56fe\u7247\u672c\u8eab\u5df2\u7ecf\u8fc7JPEG\u7b97\u6cd5\u538b\u7f29\uff0c\u5bf9\u4e8e640\u00d7480\u7684\u56fe\u7247\u800c\u8a00\u53ea\u6709\u51e0\u5341KB\uff0c\u56e0\u6b64\u4ecd\u7136\u662f\u4e00\u79cd\u8f83\u4e3a\u7406\u60f3\u7684\u4f20\u8f93\u65b9\u5f0f\u3002<\/p>\n<h1><span id=\"63\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">6.3 \u670d\u52a1\u5668\u7aef\u56fe\u50cf\u91c7\u96c6\u8bbe\u8ba1<\/span><\/span><\/h1>\n<h3><\/h3>\n<h2><span id=\"nbsp_631_VFW\">&nbsp; 6.3.1 VFW\u5e93<\/span><\/h2>\n<p>VFW\uff08Video for Windows\uff09\u662fWindows\u4e13\u95e8\u63d0\u4f9b\u7684\u7528\u6765\u8fdb\u884c\u89c6\u9891\u5904\u7406\u7684\u5e93\uff0c\u53ef\u4ee5\u88ab\u5e02\u9762\u4e0a\u4e3b\u6d41\u7684\u6444\u50cf\u5934\u6240\u652f\u6301\uff0c\u5e76\u4e14\u53ef\u4ee5\u5c06\u89c6\u9891\u6d41\u5b58\u50a8\u5728\u786c\u76d8\u6216\u5176\u4ed6\u4ecb\u8d28\u4e0a\u3002\u4f7f\u7528VFW\u8fdb\u884c\u5f00\u53d1\u6240\u9700\u7684avicap32.dll\u5df2\u7ecf\u5728\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u63d0\u4f9b\uff0c\u800cCVI\u5b89\u88c5\u8def\u5f84\u4e0b\u7684sdk\/lib\u6587\u4ef6\u5939\u4e2d\u4e5f\u6709avicap32.lib\u5bfc\u5165\u5e93\u6587\u4ef6\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528DEPENDS\u5de5\u5177\u67e5\u770bavicap32.dll\u4e2d\u6240\u5305\u542b\u7684\u51fd\u6570\u3002<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/3.jpg\"><img loading=\"lazy\" title=\"3\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"3\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/3_thumb.jpg\" width=\"518\" height=\"124\"><\/a><\/p>\n<p align=\"center\">\u56fe 6\u20113 Depends\u5de5\u5177\u67e5\u770bavicap32.dll\u4e2d\u5305\u542b\u7684\u51fd\u6570<\/p>\n<p>\u5728DEPENDS\u5de5\u5177\u4e2d\uff0c\u6211\u4eec\u6ce8\u610f\u5230avicap32.dll\u53ea\u63d0\u4f9b\u4e866\u4e2a\u51fd\u6570\u3002\u56e0\u4e3aavicap32\u5927\u90e8\u5206\u7684\u64cd\u4f5c\u57fa\u4e8eWindows Message\u673a\u5236\uff0c\u6240\u4ee5\u7edd\u5927\u591a\u6570\u64cd\u4f5c\u901a\u8fc7SendMessage()\u51fd\u6570\u7ecf\u7531Windows\u7684\u6d88\u606f\u7f13\u51b2\u533a\u961f\u5217\u8fdb\u884c\uff0c\u800c\u975e\u7528\u6237\u4e3b\u52a8\u8c03\u7528\u51fd\u6570\u3002\u8fd9\u79cd\u8bbe\u8ba1\u5177\u6709\u4e00\u4e9b\u4f18\u52bf\uff1a\u56e0\u4e3a\u89c6\u9891\u6d41\u662f\u91c7\u7528USB\u540c\u6b65\u4f20\u8f93\u7684\u65b9\u5f0f\uff0c\u7528\u6237\u5bf9\u5e93\u4e2d\u51fd\u6570\u7684\u8c03\u7528\u4f1a\u5f71\u54cd\u540c\u6b65\u4f20\u8f93\u7684\u8fc7\u7a0b\u3002\u800c\u91c7\u7528\u6d88\u606f\u673a\u5236\u5219\u5141\u8bb8avicap\u53ea\u5728\u4e0d\u5f71\u54cd\u540c\u6b65\u4f20\u8f93\u7684\u65f6\u5019\u5904\u7406\u7528\u6237\u7684\u64cd\u4f5c\uff0c\u867d\u7136\u7528\u6237\u7684\u64cd\u4f5c\u4f18\u5148\u7ea7\u88ab\u964d\u4f4e\u4e86\uff0c\u4f46\u662f\u4fdd\u8bc1\u4e86USB\u540c\u6b65\u4f20\u8f93\uff0c\u63d0\u9ad8\u4e86\u89c6\u9891\u6d41\u7684\u5904\u7406\u80fd\u529b\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5f00\u542f\u6444\u50cf\u5934\u5e76\u5b9e\u65f6\u6355\u6349\u89c6\u9891\u5219\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u51e0\u884c\u4ee3\u7801\u5b9e\u73b0\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/4.jpg\"><img loading=\"lazy\" title=\"4\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"4\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/4_thumb.jpg\" width=\"553\" height=\"99\"><\/a><\/p>\n<p>\u5176\u4e2d\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0cWM_CAP_DRIVER_CONNECT\u6d88\u606f\u4e0eWM_CAP_SEQUENCE\u6d88\u606f\u5206\u522b\u662f(WM_USER+ 10) \u4e0e(WM_USER+ 62)\u6d88\u606f\u7684\u5b8f\u5b9a\u4e49\u3002\u800cWM_USER\u662f\u4e3a\u4e86\u9632\u6b62\u7528\u6237\u5b9a\u4e49\u7684\u6d88\u606fID\u4e0e\u7cfb\u7edf\u5b9a\u4e49\u7684ID\u51b2\u7a81\u800c\u5236\u5b9a\u7684\u5b8f\u5b9a\u4e49\uff0c\u4e00\u822c\u503c\u4e3a0x400\uff0c\u5c0f\u4e8eWM_USER\u7684\u6d88\u606fID\u88ab\u7cfb\u7edf\u4f7f\u7528\uff0c\u7528\u6237\u53ef\u4ee5\u81ea\u5df1\u5b9a\u4e49\u5927\u4e8eWM_USER\u7684\u6d88\u606fID\u5e76\u4f7f\u7528\u3002<\/p>\n<p>\u6211\u4eec\u5411\u6444\u50cf\u5934\u53e5\u67c4\u53d1\u9001\u6307\u5b9a\u7684\u6d88\u606f\u5373\u53ef\u63a7\u5236\u6444\u50cf\u5934\u91c7\u53d6\u5bf9\u5e94\u7684\u52a8\u4f5c\u3002\u5728avicap32\u4e2d\uff0c\u5e38\u7528\u7684\u6d88\u606f\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/5.jpg\"><img loading=\"lazy\" title=\"5\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"5\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/5_thumb.jpg\" width=\"559\" height=\"597\"><\/a><\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/6.jpg\"><img loading=\"lazy\" title=\"6\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"6\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/6_thumb.jpg\" width=\"558\" height=\"270\"><\/a><\/p>\n<h2><span id=\"nbsp_632_UI\">&nbsp; 6.3.2 UI\u8bbe\u8ba1<\/span><\/h2>\n<p>\u4e3a\u4e86\u65b9\u4fbf\u7684\u5728\u670d\u52a1\u5668\u7aef\u8fdb\u884c\u63a7\u5236\u4e0e\u6d88\u606f\u663e\u793a\uff0c\u6211\u4eec\u65b0\u5efa\u4e00\u4e2auir\u6587\u4ef6\uff0c\u5e76\u4e14\u5728\u4e0a\u9762\u653e\u7f6e\u4e00\u4e2aCanvas\u63a7\u4ef6\u7528\u4e8e\u56fe\u50cf\u663e\u793a\uff0c\u56db\u4e2aButton\u63a7\u4ef6\u5206\u522b\u7528\u4e8e\u5b9e\u73b0\u201c\u5f00\u59cb\u9884\u89c8\u89c6\u9891\u201d\u3001\u201c\u505c\u6b62\u9884\u89c8\u89c6\u9891\u201d\u3001\u201c\u622a\u56fe\u201d\u4ee5\u53ca\u201c\u5173\u95ed\u7a0b\u5e8f\u201d\u7684\u529f\u80fd\u3002<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/7.jpg\"><img loading=\"lazy\" title=\"7\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"7\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/7_thumb.jpg\" width=\"465\" height=\"339\"><\/a><\/p>\n<p align=\"center\">\u56fe 6\u20114 \u670d\u52a1\u5668\u7aef\u8f6f\u4ef6UI<\/p>\n<p>uir\u6587\u4ef6\u7f16\u8f91\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u70b9\u51fb\u83dc\u5355\u201c<u>C<\/u>ode-<u>G<\/u>enerate-<u>A<\/u>ll Code\u201d\u81ea\u52a8\u751f\u6210\u5168\u90e8\u4ee3\u7801\u3002<\/p>\n<h2><span id=\"nbsp_633\">&nbsp; 6.3.3 \u7a0b\u5e8f\u8bbe\u8ba1<\/span><\/h2>\n<p><b>\u6dfb\u52a0\u201c\u5f00\u59cb\u201d\u6309\u94ae\u54cd\u5e94\u4ee3\u7801<\/b><\/p>\n<p>\u6211\u4eec\u7ed9\u201c\u5f00\u59cb\u201d\u6309\u94ae\u6dfb\u52a0\u54cd\u5e94\u4ee3\u7801\u3002\u54cd\u5e94\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<p><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/8.jpg\"><img loading=\"lazy\" title=\"8\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; float: none; padding-top: 0px; padding-left: 0px; margin-left: auto; display: block; padding-right: 0px; border-top-width: 0px; margin-right: auto\" border=\"0\" alt=\"8\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/8_thumb.jpg\" width=\"500\" height=\"644\"><\/a><\/p>\n<p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u505c\u7528\u201c\u5f00\u59cb\u201d\u6309\u94ae\uff0c\u9632\u6b62\u7528\u6237\u91cd\u590d\u70b9\u51fb\u672c\u6309\u94ae\uff0c\u5e76\u542f\u7528\u201c\u505c\u6b62\u201d\u3001\u201c\u622a\u56fe\u201d\u6309\u94ae\u3002\u56e0\u4e3a\u6253\u5f00\u6444\u50cf\u5934\u65f6\u9700\u8981\u77e5\u9053\u5f53\u524d\u7a0b\u5e8f\u7684Windows\u53e5\u67c4\uff0c\u6240\u4ee5\u6211\u4eec\u4f7f\u7528GetPanelAttribute()\u51fd\u6570\u6765\u83b7\u53d6\u5f53\u524d\u7a0b\u5e8f\u7684ATTR_SYSTEM_WINDOW_HANDLE\u5c5e\u6027\u3002\u901a\u8fc7capCreateCaptureWindowA\u51fd\u6570\u6253\u5f00\u6444\u50cf\u5934\u540e\uff0c\u6211\u4eec\u5c31\u83b7\u53d6\u4e86\u6444\u50cf\u5934\u7684\u53e5\u67c4\u3002<\/p>\n<p>\u6709\u4e86\u6444\u50cf\u5934\u7684\u64cd\u4f5c\u53e5\u67c4\u4e4b\u540e\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u53ef\u4ee5\u5f88\u65b9\u4fbf\u7684\u5411\u6444\u50cf\u5934\u53d1\u9001\u63a7\u5236\u547d\u4ee4\u4e86\u3002\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u8bbe\u7f6e\u4e86\u9884\u89c8\u6bd4\u4f8b\uff0c\u8bbe\u7f6e\u66f4\u65b0\u9891\u7387\u7b49\u6d88\u606f\uff0c\u5e76\u4e14\u542f\u52a8\u4e86\u89c6\u9891\u9884\u89c8\u3002<\/p>\n<p><b>\u6dfb\u52a0\u201c\u505c\u6b62\u201d\u6309\u94ae\u54cd\u5e94\u4ee3\u7801<\/b><\/p>\n<p>\u540c\u201c\u5f00\u59cb\u201d\u6309\u94ae\u4e00\u6837\uff0c\u6211\u4eec\u7ed9\u201c\u505c\u6b62\u201d\u6309\u94ae\u6dfb\u52a0\u54cd\u5e94\u4ee3\u7801\u3002\u6211\u4eec\u7ed9\u201c\u505c\u6b62\u201d\u6309\u94ae\u6dfb\u52a0\u7684\u54cd\u5e94\u4ee3\u7801\u5982\u4e0b\u3002\uff08\u6b64\u5904\u7701\u53bb\u4e86\u6d88\u606f\u51fd\u6570\u4f53\uff0c\u4e0b\u540c\uff09<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/9.jpg\"><img loading=\"lazy\" title=\"9\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"9\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/9_thumb.jpg\" width=\"559\" height=\"98\"><\/a><\/p>\n<p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u5411\u6444\u50cf\u5934\u53d1\u9001\u4e86\u65ad\u5f00\u8fde\u63a5\u7684\u547d\u4ee4\uff0c\u7136\u540e\u542f\u7528\u6216\u7981\u7528\u4e86\u76f8\u5e94\u7684\u6309\u94ae\uff0c\u9632\u6b62\u8bef\u64cd\u4f5c\u3002<\/p>\n<p><b>\u6dfb\u52a0\u201c\u622a\u56fe\u201d\u6309\u94ae\u54cd\u5e94\u4ee3\u7801<\/b><\/p>\n<p>\u5728AVICAP32\u4e2d\uff0c\u622a\u56fe\u4e5f\u53ea\u9700\u8981\u53d1\u9001\u4e00\u4e2a\u547d\u4ee4\u5373\u53ef\u3002\u6211\u4eec\u7ed9\u201c\u622a\u56fe\u201d\u6309\u94ae\u6dfb\u52a0\u5982\u4e0b\u7684\u54cd\u5e94\u4ee3\u7801\u3002<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/10.jpg\"><img loading=\"lazy\" title=\"10\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"10\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/10_thumb.jpg\" width=\"549\" height=\"119\"><\/a><\/p>\n<p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u5f53\u7528\u6237\u70b9\u51fb\u201c\u622a\u56fe\u201d\u6309\u94ae\u540e\uff0c\u9996\u5148\u5f39\u51fa\u6587\u4ef6\u4f4d\u7f6e\u9009\u62e9\u5bf9\u8bdd\u6846\uff0c\u5982\u679c\u7528\u6237\u9009\u62e9\u5b8c\u6bd5\u5219\u5c06\u56fe\u7247\u4fdd\u5b58\u5728\u7528\u6237\u7684\u6307\u5b9a\u4f4d\u7f6e\u4e0a\u3002<\/p>\n<p><b>\u6dfb\u52a0\u201c\u9000\u51fa\u201d\u6309\u94ae\u54cd\u5e94\u4ee3\u7801<\/b><\/p>\n<p>\u9000\u51fa\u6309\u94ae\u6bd4\u8f83\u7b80\u5355\uff0c\u6211\u4eec\u53ea\u9700\u8981\u6dfb\u52a0\u4ee5\u4e0b\u4e00\u884c\u4ee3\u7801\u5373\u53ef\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/11.jpg\"><img loading=\"lazy\" title=\"11\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"11\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/11_thumb.jpg\" width=\"557\" height=\"34\"><\/a><\/p>\n<p>\u4f9d\u6b21\u6dfb\u52a0\u4e86\u4ee5\u4e0a\u56db\u4e2a\u6309\u94ae\u7684\u56de\u8c03\u51fd\u6570\u4e4b\u540e\uff0c\u6211\u4eec\u7684\u7a0b\u5e8f\u5c31\u5df2\u7ecf\u5177\u5907\u4e86\u9884\u89c8\u89c6\u9891\u5e76\u4e14\u622a\u53d6\u89c6\u9891\u4e2d\u7684\u4e00\u5e27\u56fe\u50cf\u4fdd\u5b58\u5230\u6307\u5b9a\u7684\u4f4d\u7f6e\u4e0a\u7684\u529f\u80fd\u3002<\/p>\n<p><b>\u6dfb\u52a0\u201c\u81ea\u52a8\u622a\u56fe\u201d\u4ee3\u7801<\/b><\/p>\n<p>\u4f46\u662f\u4ec5\u5b8c\u6210\u4e0a\u9762\u7684\u6f14\u793a\u529f\u80fd\u8fd8\u4e0d\u591f\uff0c\u56e0\u4e3a\u6211\u4eec\u9700\u8981\u5728\u63a5\u6536\u5230\u7528\u6237\u8bf7\u6c42\u4e4b\u540e\u81ea\u52a8\u622a\u53d6\u4e00\u5e27\u7684\u6570\u636e\u5e76\u56de\u4f20\u7ed9\u5ba2\u6237\u7aef\u3002\u9ed8\u8ba4\u622a\u53d6\u4e00\u5e27\u7684\u56fe\u50cf\u7684\u4fdd\u5b58\u683c\u5f0f\u4e3a.bmp\uff0c\u4f46bmp\u683c\u5f0f\u7684\u6587\u4ef6\u672a\u7ecf\u538b\u7f29\u5360\u7528\u7a7a\u95f4\u8f83\u5927\uff0c\u6240\u4ee5\u6211\u4eec\u9700\u8981\u5c06bmp\u6587\u4ef6\u53e6\u5b58\u4e3ajpg\u6587\u4ef6\u3002<\/p>\n<p>CVI\u5e76\u4e0d\u5e26JPEG\u538b\u7f29\u7b97\u6cd5\u5e93\uff0c\u4f46\u662f\u63d0\u4f9b\u4e86\u4e00\u4e2a\u51fd\u6570SaveBitmapToJPEGFile()\u53ef\u4ee5\u5c06bmp\u6587\u4ef6\u53e6\u5b58\u4e3ajpg\u6587\u4ef6\u3002\u4e8e\u662f\u6211\u4eec\u5728\u6bcf\u6b21\u622a\u56fe\u5e76\u4fdd\u5b58\u4e3abmp\u6587\u4ef6\u540e\uff0c\u518d\u5c06bmp\u6587\u4ef6\u8f6c\u6362\u6210jpg\u6587\u4ef6\u3002<\/p>\n<p>\u81ea\u52a8\u622a\u56fe\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/12.jpg\"><img loading=\"lazy\" title=\"12\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"12\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/12_thumb.jpg\" width=\"567\" height=\"270\"><\/a><\/p>\n<p>\u5176\u4e2dwParam\u53d8\u91cf\u4e3a\u51fd\u6570\u7684\u5f62\u53c2\uff0c\u4e3a\u4e00\u968f\u673a\u6570\u3002\u8fd9\u6837\u6bcf\u6b21\u622a\u53d6\u7684\u56fe\u90fd\u4f1a\u4fdd\u5b58\u4e3a\u4e00\u4e2a[\u968f\u673a\u6570].jpg\u7684\u6587\u4ef6\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cbitmap\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u6307\u9488\uff0cGetBitmapFromFile()\u51fd\u6570\u8c03\u7528\u65f6\u6307\u9488\u6307\u5411\u4e86\u5206\u914d\u7684\u4e00\u4e9b\u7a7a\u95f4\uff0c\u56e0\u6b64\u4f7f\u7528\u5b8cbitmap\u540e\u9700\u8981\u5c06bitmap\u7a7a\u95f4\u91ca\u653e\u3002<\/p>\n<h1><span id=\"64\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">6.4 \u670d\u52a1\u5668\u7aef\u7f51\u7edc\u670d\u52a1\u8bbe\u8ba1<\/span><\/span><\/h1>\n<h3><\/h3>\n<h2><span id=\"nbsp_641_HTTP\">&nbsp; 6.4.1 HTTP\u62a5\u5934\u5206\u6790\u4e0e\u56de\u53d1\u6570\u636e\u683c\u5f0f\u5206\u6790<\/span><\/h2>\n<p><b>HTTP<\/b><b>\u62a5\u5934\u5206\u6790<\/b><\/p>\n<p>\u7531\u4e8e\u6211\u4eec\u9009\u62e9TCP\u5e93\u8fdb\u884c\u6570\u636e\u7684\u6536\u53d1\u4e0e\u5904\u7406\uff0c\u800c\u8981\u8fdb\u884c\u6570\u636e\u7684\u6536\u53d1\u4e0e\u5904\u7406\uff0c\u6211\u4eec\u9996\u5148\u8981\u77e5\u9053\u5f53\u6d4f\u89c8\u5668\u5411\u670d\u52a1\u5668\u53d1\u8d77\u8bf7\u6c42\u7684\u65f6\u5019\uff0c\u6d4f\u89c8\u5668\u5411\u670d\u52a1\u5668\u53d1\u9001\u4e86\u4ec0\u4e48\u6d88\u606f\u3002<\/p>\n<p>\u6211\u4eec\u76f4\u63a5\u8fd0\u884c\u201c3.1.2 \u7f51\u7edc\u901a\u4fe1\uff1aTCP\u5e93\u201d\u4e2dTCP\u670d\u52a1\u7aef\u7684\u793a\u4f8b\u4ee3\u7801\uff0c\u770b\u6d4f\u89c8\u5668\u53d1\u8d77HTTP\u8bf7\u6c42\u7684\u65f6\u5019\uff0cTCP\u670d\u52a1\u5668\u6536\u5230\u4e86\u4ec0\u4e48\u6570\u636e\u3002<\/p>\n<p>\u7531\u4e8e\u793a\u4f8b\u7a0b\u5e8f\u4e2d\u8bbe\u7f6e\u7684\u7aef\u53e3\u53f7\u7801\u662f26845\u53f7\u7aef\u53e3\uff0c\u56e0\u6b64\u5f53\u793a\u4f8b\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0c\u6211\u4eec\u5728\u6d4f\u89c8\u5668\u5730\u5740\u680f\u4e2d\u8f93\u5165http:\/\/localhost:26845 \u5e76\u4e14\u6309\u56de\u8f66\u952e\u3002<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/13.jpg\"><img loading=\"lazy\" title=\"13\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"13\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/13_thumb.jpg\" width=\"393\" height=\"89\"><\/a><\/p>\n<p align=\"center\">\u56fe 6\u20115 \u5728\u6d4f\u89c8\u5668\u4e2d\u8f93\u5165http:\/\/localhost:26845\/<\/p>\n<p>\u5219\u6211\u4eec\u53ef\u5728\u670d\u52a1\u7aef\u7684\u7a0b\u5e8f\u4e2d\u770b\u5230\uff0cTCP\u670d\u52a1\u7aef\u6536\u5230\u5982\u4e0b\u6d88\u606f\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/14.jpg\"><img loading=\"lazy\" title=\"14\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"14\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/14_thumb.jpg\" width=\"644\" height=\"223\"><\/a><\/p>\n<p align=\"center\">\u56fe 6\u20116 \u5728\u670d\u52a1\u5668\u7aef\u6536\u5230\u7684\u6570\u636e<\/p>\n<p>\u6211\u4eec\u6765\u7b80\u5355\u5206\u6790\u4e00\u4e0b\u6536\u5230\u7684\u6570\u636e\u5206\u522b\u4ee3\u8868\u4ec0\u4e48\u542b\u4e49\u3002<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/15.jpg\"><img loading=\"lazy\" title=\"15\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"15\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/15_thumb.jpg\" width=\"566\" height=\"246\"><\/a><\/p>\n<p>\u7b2c\u4e00\u884c\u4e2d\uff0cGET\u8868\u793a\u6d4f\u89c8\u5668\u53d1\u9001\u7684\u662fGET\u8bf7\u6c42\u3002\/\u8868\u793a\u8bbf\u95ee\u7684\u662f\u6839\u76ee\u5f55\u8def\u5f84\uff0c\u4e0d\u5e26\u4efb\u4f55\u53c2\u6570\u3002HTTP\/1.1\u8868\u660e\u91c7\u7528\u7684HTTP\u534f\u8bae\u7248\u672c\u53f7\u3002<\/p>\n<p>\u7b2c\u4e8c\u884cHOST\u8868\u793a\u53d1\u8d77\u8bf7\u6c42\u7684\u5730\u5740\u548c\u7aef\u53e3\u3002<\/p>\n<p>\u7b2c\u4e09\u884cConnection\u662f\u8fde\u63a5\u7c7b\u578b\uff0c\u8868\u793a\u662f\u5426\u9700\u8981\u6301\u4e45\u8fde\u63a5\u3002\u5982\u679c\u503c\u4e3akeep-alive\u5219\u8868\u793a\u4f7f\u7528\u6301\u4e45\u8fde\u63a5\uff0c\u5f53\u9875\u9762\u5305\u542b\u591a\u4e2a\u5143\u7d20\u65f6\u6301\u4e45\u8fde\u63a5\u53ef\u4ee5\u6709\u6548\u7684\u51cf\u5c11\u591a\u6b21\u8fde\u63a5\u6240\u9020\u6210\u7684\u8bf7\u6c42\u6570\u91cf\u7684\u9510\u589e\u3002<\/p>\n<p>\u7b2c\u56db\u884cCache-Control\u4e2d\u7684max-age=0\u8868\u793a\u6bcf\u6b21\u90fd\u4f1a\u91cd\u590d\u8bbf\u95ee\u800c\u4e0d\u4f1a\u4ece\u7f13\u5b58\u4e2d\u8bfb\u53d6\u3002<\/p>\n<p>\u5269\u4f59\u7684\u5176\u4ed6\u884c\u7684HTTP\u62a5\u5934\u8868\u660e\u4e86\u6d4f\u89c8\u5668\u53ef\u4ee5\u63a5\u6536\u7684\u6570\u636e\u7c7b\u578b\u3001\u7f16\u7801\u65b9\u5f0f\u3001\u8bed\u8a00\u7b49\u4fe1\u606f\u3002\u7531\u4e8e\u6211\u4eec\u8fd4\u56deJSON\u4ee3\u7801\uff0c\u6240\u6709\u8fd4\u56de\u6587\u5b57\u5168\u90e8\u662f\u82f1\u6587\u4e0e\u5b57\u7b26\uff0c\u6240\u4ee5\u53ef\u4ee5\u4e0d\u5fc5\u5173\u5fc3\u8fd9\u90e8\u5206\u4fe1\u606f\u3002<\/p>\n<p><b>\u56de\u53d1\u6570\u636e\u683c\u5f0f\u5206\u6790<\/b><\/p>\n<p>\u6536\u5230HTTP\u8bf7\u6c42\u540e\uff0c\u6211\u4eec\u9996\u5148\u83b7\u53d6\u6d4f\u89c8\u5668\u53d1\u9001\u7684\u6570\u636e\uff0c\u7136\u540e\u5206\u6790\u8bf7\u6c42\u7684\u5185\u5bb9\u91cc\u9762callback\u53c2\u6570\uff0c\u5e76\u4e14\u5c06\u6293\u5230\u7684\u56fe\u7247\u6570\u636e\u4ee5\u53ca\u670d\u52a1\u5668\u72b6\u6001\u4e00\u5e76\u8fd4\u56de\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48\u8981\u5148\u83b7\u53d6\u8bf7\u6c42\u91cc\u9762\u7684callback\u53c2\u6570\u5462\uff1f<\/p>\n<p>\u539f\u6765\uff0c\u6211\u4eec\u8981\u67b6\u8bbe\u7684\u7f51\u7ad9\u4f7f\u7528\u7684\u7aef\u53e3\u53f7\u662f80\uff0c\u800c\u6211\u4eec\u63d0\u4f9b\u89c6\u9891\u6e90\u7684\u670d\u52a1\u5668\u4f7f\u7528\u7684\u7aef\u53e3\u53f7\u662f26845\u3002\u5f53\u7f51\u7ad9\u4e0a\u7684JavaScript\u8bd5\u56fe\u53bb\u8bbf\u95ee\u89c6\u9891\u6e90\u65f6\uff0c\u7531\u4e8e\u4e24\u4e2a\u670d\u52a1\u6240\u5728\u7684\u7aef\u53e3\u53f7\u4e0d\u4e00\u81f4\uff0c\u6240\u4ee5JavaScript\u7684\u5b89\u5168\u673a\u5236\u4f1a\u9650\u5236\u201c\u8de8\u57df\u201d\u7684\u8bbf\u95ee\uff0c\u5bfc\u81f4\u8bbf\u95ee\u5931\u8d25\u3002\u800cJSONP\u6280\u672f\u53ef\u4ee5\u89e3\u51b3\u6b64\u7c7b\u95ee\u9898\u3002<\/p>\n<p>JSONP\u662f\u4e00\u79cd\u975e\u5b98\u65b9\u8de8\u57df\u6570\u636e\u4ea4\u4e92\u534f\u8bae\uff0c\u7528\u6765\u89e3\u51b3js\u65e0\u6cd5\u8de8\u57df\u8bbf\u95ee\u7684\u95ee\u9898\u3002\u8be5\u534f\u8bae\u7684\u4e00\u4e2a\u8981\u70b9\u5c31\u662f\u5141\u8bb8\u7528\u6237\u4f20\u9012\u4e00\u4e2acallback\u53c2\u6570\u7ed9\u670d\u52a1\u7aef\uff0c\u7136\u540e\u670d\u52a1\u7aef\u8fd4\u56de\u6570\u636e\u65f6\u4f1a\u5c06\u8fd9\u4e2acallback\u53c2\u6570\u4f5c\u4e3a\u51fd\u6570\u540d\u6765\u5305\u88f9\u4f4fJSON\u6570\u636e\u3002<\/p>\n<p>\u4e00\u4e2a\u5178\u578b\u7684\u56de\u53d1\u7ed9\u6d4f\u89c8\u5668\u7684JSON\u5b57\u7b26\u4e32\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/16.jpg\"><img loading=\"lazy\" title=\"16\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"16\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/16_thumb.jpg\" width=\"538\" height=\"118\"><\/a><\/p>\n<p>\u5176\u4e2d\u4ee3\u7801\u4e2d\u7684\u201ccallbackdata\u201d\u5c31\u662f\u6307\u7684\u6d4f\u89c8\u5668\u53d1\u9001\u7684callback\u53c2\u6570\u3002<\/p>\n<p>errorCode\u8868\u660e\u670d\u52a1\u5668\u72b6\u6001\uff0c\u6211\u4eec\u5728\u6b64\u7ea6\u5b9a\uff0cerrorCode\u4e3a0\u8868\u793a\u89c6\u9891\u6570\u636e\u91c7\u96c6\u6210\u529f\u3002<\/p>\n<p>eclipsTime\u8868\u793a\u4ece\u670d\u52a1\u5668\u6536\u5230\u8bf7\u6c42\u5230\u670d\u52a1\u5668\u53d1\u51fa\u6570\u636e\u4e4b\u95f4\u6240\u7ecf\u5386\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u6beb\u79d2\u3002<\/p>\n<p>Image\u8868\u793a\u8be5\u5e27\u7684\u56fe\u50cf\u6570\u636e\u3002\u5176\u4e2d\u201cbase64,\u201d\u540e\u9762\u8ddf\u7684\u662f\u751f\u6210\u7684jpg\u56fe\u7247\u7ecf\u8fc7Base64\u7f16\u7801\u4e4b\u540e\u7684\u6570\u636e\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cimage\u4e2d\u7684\u7701\u7565\u53f7\u8868\u793a\u8be5\u90e8\u5206\u7701\u7565\u4e86\u4e00\u90e8\u5206\u6570\u636e\u3002<\/p>\n<h2><span id=\"nbsp_642_UI\">&nbsp; 6.4.2 UI\u8bbe\u8ba1<\/span><\/h2>\n<p>\u5728\u4e0a\u4e00\u8282UI\u7684\u57fa\u7840\u4e0a\uff0c\u6211\u4eec\u518d\u6dfb\u52a0\u56db\u4e2a\u63a7\u4ef6\uff1a\u4e24\u4e2aButton\u63a7\u4ef6\uff0c\u4e00\u4e2a\u5b9a\u65f6\u5668\u63a7\u4ef6\uff0c\u4e00\u4e2a\u9759\u6001\u6587\u672c\u63a7\u4ef6\u3002\u4e24\u4e2a\u6309\u94ae\u5206\u522b\u63a7\u5236\u5f00\u542f\u7f51\u7edc\u670d\u52a1\u4e0e\u5173\u95ed\u7f51\u7edc\u670d\u52a1\uff0c\u9759\u6001\u6587\u672c\u7528\u6765\u663e\u793a\u5f53\u524d\u9700\u8981\u663e\u793a\u7684\u63d0\u793a\u4fe1\u606f\uff0c\u800c\u5b9a\u65f6\u5668\u7528\u6765\u8bbe\u5b9a\u663e\u793a\u7684\u9759\u6001\u4fe1\u606f\u8fc73\u79d2\u540e\u81ea\u52a8\u6d88\u5931\u3002<\/p>\n<p>\u6dfb\u52a0\u56db\u4e2a\u63a7\u4ef6\u540e\uff0cUI\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/17.jpg\"><img loading=\"lazy\" title=\"17\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"17\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/17_thumb.jpg\" width=\"466\" height=\"341\"><\/a><\/p>\n<p align=\"center\">\u56fe 6\u20117 \u670d\u52a1\u5668\u7aefUI \u8bbe\u8ba1<\/p>\n<h2><span id=\"nbspnbsp_643\">&nbsp;&nbsp; 6.4.3 \u7a0b\u5e8f\u8bbe\u8ba1<\/span><\/h2>\n<p><b>\u6dfb\u52a0\u5b9a\u65f6\u5668\u7684\u56de\u8c03\u51fd\u6570<\/b><\/p>\n<p>\u7a0b\u5e8f\u5728\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u9700\u8981\u663e\u793a\u4e00\u4e9b\u72b6\u6001\u6216\u63d0\u793a\u4fe1\u606f\uff0c\u800c\u9759\u6001\u6587\u672c\u63a7\u4ef6\u4e2d\u7684\u6587\u5b57\u4e00\u65e6\u663e\u793a\u4e4b\u540e\u201c\u6c38\u4e0d\u6d88\u5931\u201d\u3002<\/p>\n<p>\u4e3a\u4e86\u8ba9\u6d88\u606f\u53ea\u663e\u793a\u4e00\u6bb5\u65f6\u95f4\uff0c\u6211\u4eec\u8bbe\u5b9a\u4e86\u4e00\u4e2a\u5b9a\u65f6\u5668\uff0c\u5b9a\u65f6\u65f6\u95f4\u4e3a3\u79d2\u3002\u5f533\u79d2\u65f6\u95f4\u8fc7\u540e\uff0c\u9759\u6001\u6587\u672c\u4e2d\u7684\u6570\u636e\u81ea\u52a8\u6e05\u7a7a\u3002<\/p>\n<p>\u5b9a\u65f6\u5668\u7684\u56de\u8c03\u51fd\u6570\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/18.jpg\"><img loading=\"lazy\" title=\"18\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"18\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/18_thumb.jpg\" width=\"516\" height=\"56\"><\/a><\/p>\n<p>\u4ece\u4e0a\u9762\u7684\u4ee3\u7801\u53ef\u4ee5\u770b\u51fa\uff0c\u6bcf\u5f533\u79d2\u949f\u5b9a\u65f6\u65f6\u95f4\u5230\u65f6\uff0c\u9759\u6001\u6587\u672c\u63a7\u4ef6\u5185\u5bb9\u88ab\u6e05\u7a7a\uff0c\u5b9a\u65f6\u5668\u88ab\u7981\u7528\u3002<\/p>\n<p>\u800c\u4e0e\u5b9a\u65f6\u5668\u76f8\u5bf9\u5e94\u7684\u662fShowState\u5b8f\u5b9a\u4e49\u3002\u8be5\u5b8f\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/19.jpg\"><img loading=\"lazy\" title=\"19\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"19\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/19_thumb.jpg\" width=\"535\" height=\"51\"><\/a><\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/20.jpg\"><img loading=\"lazy\" title=\"20\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"20\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/20_thumb.jpg\" width=\"551\" height=\"30\"><\/a><\/p>\n<p>\u4ece\u4e0a\u9762\u7684\u4ee3\u7801\u53ef\u4ee5\u770b\u51fa\uff0c\u6267\u884cShowState(\u201cHello,world\u201d)\u540e\uff0c\u201cHello,world\u201d\u5b57\u6837\u5c06\u4f1a\u5728\u9759\u6001\u6587\u672c\u63a7\u4ef6\u4e2d\u663e\u793a\u51fa\u6765\uff0c3\u79d2\u949f\u540e\uff0c\u8be5\u5b57\u6837\u6d88\u5931\u3002<\/p>\n<p><b>\u6dfb\u52a0\u201cWebCam!!!<\/b><b>\u201d\u6309\u94ae\u7684\u56de\u8c03\u51fd\u6570<\/b><\/p>\n<p>\u5728\u201cWebCam!!!\u201d\u7684\u56de\u8c03\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u53ea\u9700\u8981\u6ce8\u518c\u6307\u5b9a\u7aef\u53e3\u7684TCP\u670d\u52a1\u5668\u5373\u53ef\u3002<\/p>\n<p>\u56de\u8c03\u51fd\u6570\u5168\u90e8\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/21.jpg\"><img loading=\"lazy\" title=\"21\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"21\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/21_thumb.jpg\" width=\"547\" height=\"163\"><\/a><\/p>\n<p>\u5f53\u6ce8\u518c\u6210\u529f\u65f6\uff0c\u201cWebCam!!!\u201d\u6309\u94ae\u5c06\u53d8\u4e3a\u4e0d\u53ef\u7528\u4ee5\u9632\u6b62\u91cd\u590d\u6ce8\u518c\uff0c\u201cNoWebCam\u201d\u6309\u94ae\u5c06\u53ef\u7528\uff0c\u4ee5\u5141\u8bb8\u670d\u52a1\u5668\u7ba1\u7406\u5458\u968f\u65f6\u5173\u95edWebCam\u670d\u52a1\u3002<\/p>\n<p><b>\u6dfb\u52a0TCP<\/b><b>\u6d88\u606f\u7684\u56de\u8c03\u51fd\u6570<\/b><\/p>\n<p>\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0cServerCallback\u662fTCP\u670d\u52a1\u5668\u6536\u5230\u6d88\u606f\u4e4b\u540e\u7684\u56de\u8c03\u51fd\u6570\u3002\u5982\u540c\u201c3.1.2 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align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/22.jpg\"><img loading=\"lazy\" title=\"22\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"22\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/22_thumb.jpg\" width=\"529\" height=\"138\"><\/a><\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/23.jpg\"><img loading=\"lazy\" title=\"23\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"23\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/23_thumb.jpg\" width=\"556\" height=\"444\"><\/a><\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/24.jpg\"><img loading=\"lazy\" title=\"24\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"24\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/24_thumb.jpg\" width=\"549\" height=\"485\"><\/a><\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/25.jpg\"><img loading=\"lazy\" title=\"25\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"25\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/25_thumb.jpg\" width=\"560\" height=\"163\"><\/a><\/p>\n<p><b>\u6dfb\u52a0\u201cNoWebCam<\/b><b>\u201d\u6309\u94ae\u7684\u56de\u8c03\u51fd\u6570<\/b><\/p>\n<p>\u5728\u201cNoWebCam\u201d\u6309\u94ae\u7684\u56de\u8c03\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u53ea\u9700\u8981\u5173\u95ed\u6307\u5b9a\u7aef\u53e3\u7684TCP\u670d\u52a1\u5373\u53ef\u3002<\/p>\n<p>\u56de\u8c03\u51fd\u6570\u5168\u90e8\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/26.jpg\"><img loading=\"lazy\" title=\"26\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"26\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/26_thumb.jpg\" width=\"547\" height=\"162\"><\/a><\/p>\n<p>\u5f53\u6307\u5b9a\u7aef\u53e3\u7684\u670d\u52a1\u5173\u95ed\u6210\u529f\u65f6\uff0c\u201cNoWebCam\u201d\u6309\u94ae\u5c06\u53d8\u4e3a\u4e0d\u53ef\u7528\u4ee5\u9632\u6b62\u7528\u6237\u518d\u6b21\u5173\u95ed\u8be5\u7aef\u53e3\u7684\u670d\u52a1\uff0c\u201cWebCam\uff01\uff01\uff01\u201d\u6309\u94ae\u5c06\u53ef\u7528\uff0c\u4ee5\u5141\u8bb8\u670d\u52a1\u5668\u7ba1\u7406\u5458\u518d\u6b21\u5f00\u542fWebCam\u670d\u52a1\u3002<\/p>\n<p>\u81f3\u6b64\uff0c\u6211\u4eec\u7684\u670d\u52a1\u5668\u7aef\u7684\u8f6f\u4ef6\u5df2\u7ecf\u5168\u90e8\u8bbe\u8ba1\u5b8c\u6210\u3002\u6211\u4eec\u8fd0\u884c\u670d\u52a1\u5668\u7aef\u8f6f\u4ef6\uff0c\u8fd0\u884c\u6548\u679c\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/27.jpg\"><img loading=\"lazy\" title=\"27\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"27\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/27_thumb.jpg\" width=\"471\" height=\"347\"><\/a><\/p>\n<p align=\"center\">\u56fe 6\u20118 \u670d\u52a1\u5668\u7aef\u8f6f\u4ef6\u8fd0\u884c\u6548\u679c<\/p>\n<h1><span id=\"65\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">6.5 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[callback])<\/p>\n<p>\u5176\u4e2d\uff0curl\u8868\u793a\u53d1\u9001\u8bf7\u6c42\u7684\u5730\u5740\uff0cdata\u8868\u793a\u53d1\u9001get\u8bf7\u6c42\u65f6\u6240\u9644\u5e26\u7684\u53c2\u6570\uff0ccallback\u8868\u793a\u8f7d\u5165\u6210\u529f\u65f6\u7684\u56de\u8c03\u51fd\u6570\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u5f53\u6211\u4eec\u7684HTML\u6587\u4ef6\u5185\u5bb9\u5982\u4e0b\u65f6\uff0c<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/28.jpg\"><img loading=\"lazy\" title=\"28\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"28\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/28_thumb.jpg\" width=\"561\" height=\"162\"><\/a><\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/29.jpg\"><img loading=\"lazy\" title=\"29\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"29\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/29_thumb.jpg\" width=\"558\" height=\"162\"><\/a><\/p>\n<p>\u5728\u4e0a\u9762\u7684HTML\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u5f15\u7528\u4e86jQuery\u7684\u51fd\u6570\u5e93\u6587\u4ef6\uff0c\u5e76\u4e14\u5f15\u7528\u4e86\u6211\u4eec\u81ea\u5b9a\u4e49\u7684tr.js\u6587\u4ef6\u3002\u5e76\u4e14\u5728HTML\u6587\u4ef6\u7684body\u4e2d\u5b9a\u4e49\u4e86\u4e00\u4e2aID\u4e3a\u201cWebCam\u201d\u7684img\u56fe\u50cf\u6807\u7b7e\u3002<\/p>\n<p>\u4e0b\u9762\u5728\u6211\u4eec\u81ea\u5b9a\u4e49\u7684js\u6587\u4ef6\u201ctr.js\u201d\u4e2d\u5199\u81ea\u5b9a\u4e49\u7684\u51fd\u6570\u5185\u5bb9\u3002\u5728\u4e0b\u9762\u7684js\u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u5373\u5c06\u901a\u8fc7\u8c03\u7528getJSON()\u51fd\u6570\u6765\u83b7\u53d6\u89c6\u9891\u6e90\u4f20\u56de\u7684\u6bcf\u4e00\u5e27\u7684\u89c6\u9891\u4fe1\u606f\u3002<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/30.jpg\"><img loading=\"lazy\" title=\"30\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"30\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/30_thumb.jpg\" width=\"547\" height=\"313\"><\/a><\/p>\n<p>\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u5199\u4e86\u4e00\u4e2aGetCap()\u51fd\u6570\u3002\u5728\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u8c03\u7528\u4e86getJSON\u51fd\u6570\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u6211\u4eec\u5728\u8bbf\u95ee\u89c6\u9891\u6e90\u670d\u52a1\u5668\u65f6\u8fd8\u9644\u5e26\u4e86\u4e24\u4e2a\u53c2\u6570\u3002\u4e00\u4e2a\u662f\u968f\u673a\u6570\uff0c\u4e00\u4e2a\u662fcallback\u53c2\u6570\u3002\u9644\u5e26\u968f\u673a\u6570\u662f\u4e3a\u4e86\u9632\u6b62\u670d\u52a1\u5668\u8fd4\u56de304\u9519\u8bef\uff0c\u800ccallback\u53c2\u6570\u5982\u524d\u6240\u8ff0\u662f\u4f7f\u7528JSONP\u7684\u9700\u8981\u3002304\u9519\u8bef\u662f\u6307\u5f53\u670d\u52a1\u5668\u68c0\u6d4b\u5230\u7528\u6237\u7684\u8bf7\u6c42\u53c2\u6570\u4e0d\u53d8\u5e76\u4e14\u670d\u52a1\u5668\u7aef\u6570\u636e\u4e5f\u6ca1\u6709\u53d8\u5316\u65f6\u670d\u52a1\u5668\u8fd4\u56de\u7684\u9519\u8bef\u503c\uff0c\u4ee5\u544a\u8bc9\u7528\u6237\u670d\u52a1\u5668\u7684\u5185\u5bb9\u5e76\u672a\u53d1\u751f\u53d8\u5316\u3002<\/p>\n<p>\u5f53\u83b7\u53d6\u6570\u636e\u6210\u529f\u540e\uff0c\u7a0b\u5e8f\u5c06\u6267\u884cgetJSON()\u7684\u56de\u8c03\u51fd\u6570\uff0c\u5373\u4e0a\u8ff0\u4ee3\u7801\u7b2c7\u884c\u3002\u5728\u56de\u8c03\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u628aHTML\u6587\u4ef6\u4e2dID\u4e3a\u201cWebCam\u201d\u7684\u56fe\u7247src\u8bbe\u7f6e\u4e3a\u521a\u521a\u8fd4\u56de\u7684JSON\u5b57\u7b26\u4e32\u7684image\u53d8\u91cf\u503c\uff0c\u5e76\u4e14\u518d\u6b21\u8c03\u7528GetCap()\u51fd\u6570\u4ee5\u7ee7\u7eed\u8fdb\u884c\u4e0b\u4e00\u5e27\u7684\u8bbf\u95ee\u3002\u56e0\u6b64\uff0c\u53ea\u8981\u8c03\u7528GetCap()\u51fd\u6570\uff0c\u7a0b\u5e8f\u5373\u5f00\u59cb\u4e0d\u65ad\u7684\u8bbf\u95ee\u89c6\u9891\u6e90\u670d\u52a1\u5668\uff0c\u4e0d\u65ad\u7684\u83b7\u53d6\u5b9e\u65f6\u76d1\u63a7\u89c6\u9891\u3002<\/p>\n<p>$(document).ready()\u8868\u793a\u201c\u9875\u9762\u8f7d\u5165\u6210\u529f\u201d\u4e8b\u4ef6\u3002\u5728ready()\u51fd\u6570\u4e2d\u6dfb\u52a0\u56de\u8c03\u51fd\u6570\uff0c\u5219\u56de\u8c03\u51fd\u6570\u4e2d\u7684\u4ee3\u7801\u5373\u9875\u9762\u8f7d\u5165\u6210\u529f\u540e\u7acb\u5373\u6267\u884c\u7684\u4ee3\u7801\u3002\u56e0\u6b64\uff0c\u53ea\u8981\u6211\u4eec\u5728ready\u7684\u56de\u8c03\u51fd\u6570\u4e2d\u8c03\u7528GetCap()\u51fd\u6570\u540e\uff0cGetCap()\u51fd\u6570\u5373\u5f00\u59cb\u6267\u884c\u3002<\/p>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u5b9e\u9645\u8fd0\u884c\u6548\u679c\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/31.jpg\"><img loading=\"lazy\" title=\"31\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"31\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/31_thumb.jpg\" width=\"644\" height=\"618\"><\/a><\/p>\n<p align=\"center\">\u56fe 6\u20119 \u7f51\u7edc\u6444\u50cf\u673aDemo\u8fd0\u884c\u6548\u679c<\/p>\n<p>\u4e0a\u9762\u7684\u4ee3\u7801\u53ea\u662f\u4e3a\u4e86\u5b8c\u6210\u8be5\u529f\u80fd\u800c\u5199\u7684\u6700\u7b80\u5355\u7684Demo\u7a0b\u5e8f\u3002\u4e3a\u4e86\u4fdd\u8bc1\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u4ee5\u53ca\u826f\u597d\u7684\u7528\u6237\u4f53\u9a8c\uff0c\u6211\u4eec\u5b9e\u9645\u8fd0\u884c\u7684\u4ee3\u7801\u505a\u4e86\u4e00\u756a\u6539\u52a8\u3002\u5b9e\u9645\u7684HTML\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/32.jpg\"><img loading=\"lazy\" title=\"32\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"32\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/32_thumb.jpg\" width=\"559\" height=\"74\"><\/a><\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/33.jpg\"><img loading=\"lazy\" title=\"33\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"33\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/33_thumb.jpg\" width=\"562\" height=\"356\"><\/a><\/p>\n<p>\u5728\u4e0a\u9762\u7684HTML\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u6dfb\u52a0\u4e86\u4e00\u4e2a\u7528\u4e8e\u8f93\u5165\u89c6\u9891\u6e90\u7684\u6587\u672c\u8f93\u5165\u6846\u4ee5\u53ca\u6309\u94ae\u3002\u5e76\u4e14\u6dfb\u52a0\u4e86\u4e00\u4e2a\u5199\u6709\u201cPowered By\uff1aAsvzeg\u201d\u7684\u9875\u811a\u3002<\/p>\n<p>\u5b9e\u9645\u7684js\u4ee3\u7801\u652f\u6301\u7528\u6237\u6dfb\u52a0\u81ea\u5df1\u7684\u89c6\u9891\u6e90\uff0c\u5e76\u4e14\u5141\u8bb8\u6700\u591a\u6dfb\u52a010\u4e2a\u89c6\u9891\u6e90\u3002\u5b9e\u9645\u7684js\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/34.jpg\"><img loading=\"lazy\" title=\"34\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"34\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/34_thumb.jpg\" width=\"555\" height=\"422\"><\/a><\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/35.jpg\"><img loading=\"lazy\" title=\"35\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"35\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/35_thumb.jpg\" width=\"570\" height=\"510\"><\/a><\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/36.jpg\"><img loading=\"lazy\" title=\"36\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"36\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/36_thumb.jpg\" width=\"546\" height=\"416\"><\/a><\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/37.jpg\"><img loading=\"lazy\" title=\"37\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"37\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/37_thumb.jpg\" width=\"542\" height=\"441\"><\/a><\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/38.jpg\"><img loading=\"lazy\" title=\"38\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"38\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/38_thumb.jpg\" width=\"552\" height=\"283\"><\/a><\/p>\n<p>\u4ece\u4e0a\u9762\u7684\u4ee3\u7801\u6211\u4eec\u53ef\u4ee5\u770b\u51fa\uff0c\u5b9e\u9645\u7684js\u4ee3\u7801\u4e2d\uff0c\u7528\u6237\u53ef\u4ee5\u6dfb\u52a0\u81ea\u5b9a\u4e49\u7684\u89c6\u9891\u6e90\uff0c\u5e76\u4e14\u652f\u6301\u6700\u591a\u6dfb\u52a010\u4e2a\u89c6\u9891\u6e90\u3002\u6b64\u5916\uff0c\u5b9e\u9645\u7684js\u4ee3\u7801\u8fd8\u652f\u6301\u5206\u8fa8\u7387\u68c0\u6d4b\u3001\u652f\u6301\u5173\u95ed\u89c6\u9891\u6e90\u3001\u652f\u6301\u7f51\u7edc\u5ef6\u65f6\u670d\u52a1\u5668\u5ef6\u65f6\u65f6\u95f4\u63d0\u793a\u3001\u652f\u6301\u8d85\u65f6\u63d0\u793a\u4ee5\u53ca\u52a0\u8f7d\u5931\u8d25\u4e4b\u540e\u7684\u91cd\u8bd5\u7b49\u7b49\u3002<\/p>\n<p>\u5b9e\u9645\u7684\u7f51\u7edc\u6444\u50cf\u673a\u7684\u8fd0\u884c\u6548\u679c\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/39.jpg\"><img loading=\"lazy\" title=\"39\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"39\" src=\"http:\/\/img.liuwenhao.ink\/img\/LabWindowsCVI_80D\/39_thumb.jpg\" width=\"644\" height=\"561\"><\/a><\/p>\n<p align=\"center\">\u56fe 6\u201110 \u5b9e\u9645\u7f51\u7edc\u6444\u50cf\u673a\u8fd0\u884c\u6548\u679c<\/p>\n<h1><span id=\"66\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">6.6 \u7ed3\u675f\u8bed<\/span><\/span><\/h1>\n<h3><\/h3>\n<p>\u81f3\u6b64\uff0c\u901a\u8fc7\u672c\u6b21\u5b9e\u9a8c\uff0c\u5927\u5bb6\u5e94\u8be5\u5bf9\u7b2c\u4e00\u7ae0\u4e2d\u6211\u4eec\u6240\u8bf4\u8fc7\u7684\u4e00\u53e5\u8bdd\u201cC\u8bed\u8a00\u4e0d\u4ec5\u80fd\u591f\u505aC++\u3001C#\u3001Java\u7b49\u53ef\u4ee5\u505a\u7684\u4e8b\uff0c\u6709\u65f6\u8fd8\u53ef\u4ee5\u505a\u7684\u66f4\u5feb\u66f4\u597d\uff0c\u751a\u81f3\u8fd8\u53ef\u4ee5\u505a\u8fd9\u4e9b\u7f16\u7a0b\u8bed\u8a00\u6240\u4e0d\u80fd\u505a\u7684\u4e8b\u3002\u201d\u6709\u4e86\u66f4\u52a0\u6df1\u523b\u7684\u7406\u89e3\u4e0e\u4f53\u4f1a\u3002\u4f7f\u7528C\u8bed\u8a00\uff0c\u4e00\u6837\u4e5f\u53ef\u4ee5\u7d27\u968f\u65f6\u4ee3\u6f6e\u6d41\u5f00\u53d1\u4e00\u4e9b\u65b0\u9c9c\u7684\u73a9\u610f\u513f\u3002<\/p>\n<p>\u901a\u8fc7\u672c\u6b21\u7efc\u5408\u5b9e\u9a8c\uff0c\u5927\u5bb6\u5e94\u8be5\u4ece\u5e95\u5c42\u4e86\u89e3\u5230\u4e86HTTP\u534f\u8bae\u7684\u5de5\u4f5c\u539f\u7406\u3002\u5982\u679c\u8ba4\u771f\u7684\u7406\u89e3\u4e86\u672c\u6b21\u5b9e\u9a8c\u7684\u8bbe\u8ba1\u601d\u8def\u4e0e\u8fc7\u7a0b\uff0c\u4eceTCP\u534f\u8bae\u5c42\u4e86\u89e3\u4e86\u4e92\u8054\u7f51\u4e2d\u901a\u4fe1\u7684\u57fa\u672c\u6982\u5ff5\u4e0e\u57fa\u672c\u8fc7\u7a0b\u4e4b\u540e\uff0c\u5927\u5bb6\u5e94\u8be5\u65e0\u8bba\u5bf9Servlet\u8fd8\u662fSocket\uff0c\u90fd\u5e94\u8be5\u6709\u604d\u7136\u5927\u609f\u7684\u611f\u89c9\uff1a\u201c\u4e00\u4e2a\u5e2e\u52a9\u6211\u4eec\u5f00\u53d1TCP\u534f\u8bae\u7684\u5de5\u5177\u800c\u5df2\u201d\u3002<\/p>\n<p>\u5f53\u7136\u4e86\uff0c\u672c\u6b21\u8bfe\u7684\u7efc\u5408\u793a\u4f8b\u4ecd\u7136\u6709\u8bb8\u591a\u9700\u8981\u5b8c\u5584\u7684\u5730\u65b9\u3002\u5982\uff1a<\/p>\n<p>\u00d8 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id=\"67\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">6.7 \u63a2\u7d22\u4e0e\u5b9e\u9a8c<\/span><\/span><\/h1>\n<h4><\/h4>\n<h2><span id=\"nbsp_671\">&nbsp; 6.7.1 \u5b9e\u9a8c<\/span><\/h2>\n<p>\u5b9e\u73b0\u672c\u8282\u8bfe\u4e2d\u7684\u201c\u8fdc\u7a0b\u76d1\u63a7\u7cfb\u7edf\u201d\u3002<\/p>\n<h2><span id=\"nbsp_672\">&nbsp; 6.7.2 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