{"id":354,"date":"2004-10-19T14:06:18","date_gmt":"2004-10-19T06:06:18","guid":{"rendered":"http:\/\/blog.axqd.net\/?p=354"},"modified":"2004-10-19T14:06:18","modified_gmt":"2004-10-19T06:06:18","slug":"serial-communication","status":"publish","type":"post","link":"https:\/\/blog.axqd.net\/?p=354","title":{"rendered":"\u5728C++ Builder\u4e2d\u5229\u7528\u4e32\u884c\u901a\u4fe1\u63a7\u4ef6\u7f16\u7a0b"},"content":{"rendered":"

\u6458\u8981\uff1a\u4e32\u53e3\u662f\u5e38\u7528\u7684\u8ba1\u7b97\u673a\u4e0e\u5916\u90e8\u4e32\u884c\u8bbe\u5907\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u901a\u9053\uff0c\u7531\u4e8e\u4e32\u884c\u901a\u4fe1\u65b9\u4fbf\u6613\u884c\uff0c\u6240\u4ee5\u5e94\u7528\u5e7f\u6cdb\u3002\u672c\u6587\u4ecb\u7ecd\u4e86\u5728C++ Builder\u4e2d\u5982\u4f55\u5229\u7528\u4e32\u884c\u901a\u4fe1\u63a7\u4ef6\u8fdb\u884c\u4e32\u884c\u901a\u4fe1\u7f16\u7a0b\u3002<\/p>\n

\u4e00\u3001\u5f15\u8a00<\/span><\/strong><\/p>\n

\u76ee\u524d\uff0c\u5728\u7528\u8ba1\u7b97\u673a\u8fdb\u884c\u6570\u636e\u4f20\u8f93\u65f6\uff0c\u5e38\u7528\u7684\u662f\u4e32\u884c\u901a\u4fe1\u65b9\u5f0f\u3002\u7528C\uff0b\uff0b Builder\u6765\u7f16\u5199\u4e32\u884c\u901a\u4fe1\u7a0b\u5e8f\u65f6\uff0c\u53ef\u4ee5\u8c03\u7528Windows API\u51fd\u6570\uff0c\u4e5f\u53ef\u4ee5\u5229\u7528VB\u4e2d\u7684MSComm\u63a7\u4ef6\u3002 \u5229\u7528 API\u51fd\u6570\u7f16\u5199\u5b9e\u9645\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u5f80\u5f80\u8981\u8003\u8651\u591a\u7ebf\u7a0b\u7684\u95ee\u9898\uff0c\u8fd9\u6837\u7f16\u51fa\u6765\u7684\u7a0b\u5e8f\u4e0d\u4f46\u5341\u5206\u5e9e\u5927\uff0c\u800c\u4e14\u7ed3\u6784\u6bd4\u8f83\u590d\u6742\uff0c\u7ee7\u627f\u6027\u5dee\uff0c\u7ef4\u62a4\u56f0\u96be\u3002\u4f46\u662f\u4f7f\u7528\u4e32\u884c\u901a\u4fe1\u63a7\u4ef6\u5c31\u76f8\u5bf9\u7b80\u5355\u4e00\u4e9b\uff0c\u800c\u4e14\u529f\u80fd\u5f3a\u5927\uff0c\u6027\u80fd\u5b89\u5168\u53ef\u9760\u3002\u672c\u6587\u5c31\u7b80\u5355\u7684\u4ecb\u7ecd\u4e00\u4e0b\u5728C++ Builder\u4e2d\u5229\u7528MSComm\u63a7\u4ef6\u8fdb\u884c\u7f16\u7a0b\u3002<\/p>\n

\u4e8c\u3001MSComm\u63a7\u4ef6\u7684\u5e38\u7528\u5c5e\u6027\u548c\u4e8b\u4ef6<\/strong><\/span><\/p>\n

MSComm \u63a7\u4ef6\u901a\u8fc7\u4e32\u884c\u7aef\u53e3\u4f20\u8f93\u548c\u63a5\u6536\u6570\u636e\uff0c\u4e3a\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u4e32\u884c\u901a\u8baf\u529f\u80fd\u3002\u5177\u4f53\u7684\u6765\u8bf4\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e24\u79cd\u5904\u7406\u901a\u4fe1\u95ee\u9898\u7684\u65b9\u6cd5\uff1a\u4e00\u662f\u4e8b\u4ef6\u9a71\u52a8(Event\uff0ddriven)\u65b9\u6cd5\uff0c\u4e00\u662f\u67e5\u8be2\u6cd5\u3002<\/p>\n

\u4e8b\u4ef6\u9a71\u52a8\u65b9\u5f0f<\/strong><\/p>\n

\u5728\u4f7f\u7528\u4e8b\u4ef6\u9a71\u52a8\u6cd5\u8bbe\u8ba1\u7a0b\u5e8f\u65f6\uff0c\u6bcf\u5f53\u6709\u65b0\u5b57\u7b26\u5230\u8fbe\uff0c\u6216\u7aef\u53e3\u72b6\u6001\u6539\u53d8\uff0c\u6216\u53d1\u751f\u9519\u8bef\u65f6\uff0cMSComm\u63a7\u4ef6\u5c06\u89e3\u53d1OnComm\u4e8b\u4ef6\uff0c\u800c\u5e94\u7528\u7a0b\u5e8f\u5728\u6355\u83b7\u8be5\u4e8b\u4ef6\u540e\uff0c\u901a\u8fc7\u68c0\u67e5MSComm\u63a7\u4ef6\u7684CommEvent\u5c5e\u6027\u53ef\u4ee5\u83b7\u77e5\u6240\u53d1\u751f\u7684\u4e8b\u4ef6\u6216\u9519\u8bef\uff0c\u4ece\u800c\u91c7\u53d6\u76f8\u5e94\u7684\u64cd\u4f5c\u3002\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u7a0b\u5e8f\u54cd\u5e94\u53ca\u65f6\uff0c\u53ef\u9760\u6027\u9ad8\u3002<\/p>\n

\u67e5\u8be2\u65b9\u5f0f<\/strong><\/p>\n

\u67e5\u8be2\u65b9\u5f0f\u5b9e\u8d28\u4e0a\u8fd8\u662f\u4e8b\u4ef6\u9a71\u52a8\uff0c\u4f46\u5728\u6709\u4e9b\u60c5\u51b5\u4e0b\uff0c\u8fd9\u79cd\u65b9\u5f0f\u663e\u5f97\u66f4\u4e3a\u4fbf\u6377\u3002\u5728\u7a0b\u5e8f\u7684\u6bcf\u4e2a\u5173\u952e\u529f\u80fd\u4e4b\u540e\uff0c\u53ef\u4ee5\u901a\u8fc7\u68c0\u67e5 CommEvent \u5c5e\u6027\u7684\u503c\u6765\u67e5\u8be2\u4e8b\u4ef6\u548c\u9519\u8bef\u3002\u5982\u679c\u5e94\u7528\u7a0b\u5e8f\u8f83\u5c0f\uff0c\u5e76\u4e14\u662f\u81ea\u4fdd\u6301\u7684\uff0c\u8fd9\u79cd\u65b9\u6cd5\u53ef\u80fd\u662f\u66f4\u53ef\u53d6\u7684\u3002<\/p>\n

1.MSComm \u63a7\u4ef6\u7684\u5e38\u7528\u5c5e\u6027<\/p>\n

CommPort\u5c5e\u6027\uff1a\u8bbe\u7f6e\u6216\u8fd4\u56de\u901a\u8baf\u7aef\u53e3\u53f7\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u4e3a1\u523016\u4e4b\u95f4\u7684\u4efb\u4f55\u503c\uff0c\u672c\u7cfb\u7edf\u91c7\u7528\u7f3a\u7701\u503c2\uff1b
\nSettings\u5c5e\u6027\uff1a\u4ee5\u5b57\u7b26\u4e32\u5f62\u5f0f\u8bbe\u7f6e\u6216\u8fd4\u56de\u6ce2\u7279\u7387\u3001\u5947\u5076\u6821\u9a8c\u3001\u6570\u636e\u4f4d\u548c\u505c\u6b62\u4f4d\uff0c\u672c\u7cfb\u7edf\u91c7\u7528\u7f3a\u7701\u503c”9600\uff0cn\uff0c8\uff0c1″;
\nPortOpen\u5c5e\u6027\uff1a\u8bbe\u7f6e\u6216\u8fd4\u56de\u901a\u8baf\u53e3\u7684\u72b6\u6001\u4ee5\u53ca\u6253\u5f00\u548c\u5173\u95ed\u7aef\u53e3\uff0c\u53ef\u901a\u8fc7\u628a\u8be5\u5c5e\u6027\u8bbe\u7f6e\u4e3atrue\u6216\u8005false\u6765\u6253\u5f00\u6216\u8005\u5173\u95ed\u7aef\u53e3\uff1b
\nInBufferSize\u548cOutBufferSize\u5c5e\u6027\uff1a\u5206\u522b\u8bbe\u7f6e\u63a5\u6536\u548c\u53d1\u9001\u7f13\u51b2\u533a\u5206\u914d\u7684\u5185\u5b58\u6570\u91cf\uff0c\u5355\u4f4d\u4e3a\u5b57\u8282\uff0c\u7f3a\u7701\u503c\u5206\u522b\u4e3a1024byte\u548c512byte\uff1b
\nInputLen\u5c5e\u6027\uff1a\u786e\u5b9a\u5e0c\u671b\u4ece\u63a5\u6536\u7f13\u51b2\u533a\u79fb\u51fa\u7684\u5b57\u7b26\u6570\u91cf\uff0c\u5f53InputLen\uff1d0\u65f6\uff0c\u4e00\u6b21\u628a\u63a5\u6536\u7f13\u51b2\u533a\u7684\u5b57\u7b26\u5168\u90e8\u79fb\u51fa\uff1b
\nInput\u5c5e\u6027\uff1a\u4ece\u63a5\u6536\u7f13\u51b2\u533a\u4e2d\u8bfb\u51fa\u6570\u636e\uff0c\u7136\u540e\u5c06\u8be5\u6570\u636e\u4ece\u7f13\u51b2\u533a\u79fb\u8d70\u3002
\nOutPut\u5c5e\u6027\uff1a\u5411\u53d1\u9001\u7f13\u51b2\u533a\u4f20\u9012\u5f85\u53d1\u9001\u7684\u6570\u636e\u3002
\nInBufferCount\u548cOutBufferCount\u5c5e\u6027\uff1a\u5206\u522b\u786e\u5b9a\u5f53\u524d\u9a7b\u7559\u5728\u63a5\u6536\u7f13\u51b2\u533a\u7b49\u5f85\u88ab\u53d6\u51fa\u548c\u53d1\u9001\u7f13\u51b2\u533a\u51c6\u5907\u53d1\u9001\u7684\u5b57\u7b26\u6570\u91cf\uff0c\u8fd9\u4e24\u4e2a\u5c5e\u6027\u8bbe\u7f6e\u4e3a0\uff0c\u63a5\u6536\u548c\u53d1\u9001\u7f13\u51b2\u533a\u7684\u5185\u5bb9\u5c06\u88ab\u6e05\u9664\uff1b
\nInputMode\u5c5e\u6027\uff1a\u8bbe\u7f6e\u63a5\u6536\u4f20\u5165\u6570\u636e\u7684\u683c\u5f0f\uff0c\u8bbe\u7f6e\u4e3a0\u91c7\u7528\u6587\u672c\u5f62\u5f0f\uff0c\u8bbe\u7f6e\u4e3a1\u91c7\u7528\u4e8c\u8fdb\u5236\u683c\u5f0f\uff0c\u672c\u7cfb\u7edf\u8bbe\u7f6e\u4e3a\u4e8c\u8fdb\u5236\u683c\u5f0f\u8fdb\u884c\u53d1\u9001\u548c\u63a5\u6536\uff1b
\nSThreshold\u5c5e\u6027\uff1a\u4fdd\u5b58\u4e00\u4e2a\u4ea7\u751f\u53d1\u9001OnComm\u4e8b\u4ef6\u7684\u754c\u9650\u503c\uff0c\u672c\u7cfb\u7edf\u8bbe\u7f6e\u8be5\u5c5e\u6027\u4e3a0\uff0c\u53d1\u9001\u6570\u636e\u65f6\u4e0d\u4ea7\u751fOnComm\u4e8b\u4ef6\uff1b
\nRThreshold\u5c5e\u6027\uff1a\u8bbe\u5b9a\u5f53\u63a5\u6536\u51e0\u4e2a\u5b57\u7b26\u65f6\u89e6\u53d1OnComm\u4e8b\u4ef6\uff0c\u672c\u7cfb\u7edf\u8bbe\u7f6e\u8be5\u5c5e\u6027\u4e3a1\uff0c\u6bcf\u63a5\u6536\u4e00\u4e2a\u5b57\u7b26\u5c31\u4ea7\u751f\u4e00\u4e2aOnComm\u4e8b\u4ef6\uff1b<\/p>\n

2\uff0eMSComm\u63a7\u4ef6\u7684\u4e8b\u4ef6
\nMSCOMM\u63a7\u4ef6\u53ea\u4f7f\u7528\u4e00\u4e2a\u4e8b\u4ef6OnComm\uff0c\u7528\u5c5e\u6027CommEvent\u7684\u5341\u4e03\u4e2a\u503c\u6765\u533a\u5206\u4e0d\u540c\u7684\u89e6\u53d1\u65f6\u673a\u3002\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u4e2a\uff1a<\/p>\n

(1)CommEvent=1\u65f6\uff1a\u4f20\u8f93\u7f13\u51b2\u533a\u4e2d\u7684\u5b57\u7b26\u4e2a\u6570\u5df2\u5c11\u4e8eSthreshold(\u53ef\u8bbe\u7f6e\u7684\u5c5e\u6027\u503c)\u4e2a\u3002
\n(2)CommEvent=2\u65f6\uff1a\u63a5\u6536\u7f13\u51b2\u533a\u4e2d\u6536\u5230Rthreshold(\u53ef\u8bbe\u7f6e\u7684\u5c5e\u6027\u503c)\u4e2a\u5b57\u7b26\uff0c\u5229\u7528\u6b64\u4e8b\u4ef6\u53ef\u7f16\u5199\u63a5\u6536\u6570\u636e\u7684\u8fc7\u7a0b\u3002
\n(3)CommEvent=3\u65f6\uff1aCTS\u7ebf\u53d1\u751f\u53d8\u5316\u3002
\n(4)CommEvent=4\u65f6\uff1aDSR\u7ebf\u53d1\u751f\u53d8\u5316\u3002
\n(5)CommEvent=5\u65f6\uff1aCD\u7ebf\u53d1\u751f\u53d8\u5316\u3002
\n(6)CommEvent=6\u65f6\uff1a\u68c0\u6d4b\u5230\u632f\u94c3\u4fe1\u53f7\u3002<\/p>\n

\u53e6\u5916\u5341\u79cd\u60c5\u51b5\u662f\u901a\u4fe1\u9519\u8bef\u65f6\u4ea7\u751f\uff0c\u5373\u9519\u8bef\u4ee3\u7801\u3002<\/p>\n

\u4e09\u3001\u7a0b\u5e8f\u7684\u5b9e\u73b0<\/strong><\/span><\/p>\n

1.\u6ce8\u518cMSComm\u63a7\u4ef6<\/p>\n

\u4f17\u6240\u5468\u77e5\uff0cC++Builder\u672c\u8eab\u5e76\u4e0d\u63d0\u4f9b\u4e32\u884c\u901a\u8baf\u63a7\u4ef6MSComm\uff0c\u4f46\u6211\u4eec\u5374\u53ef\u4ee5\u901a\u8fc7\u6ce8\u518c\u540e\u76f4\u63a5\u4f7f\u7528\u5b83\u3002\u542f\u52a8C++Builder5.0\u540e\uff0c\u7136\u540e\u9009\u62e9C++Builder\u4e3b\u83dc\u5355\u4e2d\u7684Component\u83dc\u5355\u9879\uff0c\u5355\u51fbImport Active Control\u547d\u4ee4\uff0c\u5f39\u51faImport Active\u7a97\u53e3\uff0c\u9009\u62e9Microsoft Comm Control6.0\uff0c\u518d\u9009\u62e9Install\u6309\u94ae\u6267\u884c\u5b89\u88c5\u547d\u4ee4,\u7cfb\u7edf\u5c06\u81ea\u52a8\u8fdb\u884c\u7f16\u8bd1,\u7f16\u8bd1\u5b8c\u6210\u540e\u5373\u5b8c\u6210MSComm\u63a7\u4ef6\u5728C++Builder\u4e2d\u7684\u6ce8\u518c, \u7cfb\u7edf\u9ed8\u8ba4\u5b89\u88c5\u5728\u63a7\u4ef6\u677f\u7684Active\u9875,\u63a5\u4e0b\u6765\u6211\u4eec\u5c31\u53ef\u4ee5\u50cf\u4f7f\u7528C++Builder\u672c\u8eab\u63d0\u4f9b\u7684\u63a7\u4ef6\u90a3\u6837\u4f7f\u7528\u65b0\u6ce8\u518c\u7684MSComm\u63a7\u4ef6\u4e86\u3002\uff08\u524d\u63d0\u6761\u4ef6\u662f\u4f60\u7684\u673a\u5b50\u4e0a\u5b89\u88c5\u4e86Visual Basic\uff0c\u6216\u8005\u6709\u5b83\u7684\u5e93\uff09<\/p>\n

2.\u5177\u4f53\u5b9e\u73b0<\/p>\n

\u65b0\u5efa\u4e00\u4e2a\u5de5\u7a0bProject1\uff0c\u628a\u6ce8\u518c\u597d\u7684MSComm\u63a7\u4ef6\u52a0\u5165\u5230\u7a97\u4f53\u4e2d\uff0c\u7136\u540e\u518d\u52a0\u51655\u4e2aComboBox\u7528\u6765\u8bbe\u7f6e\u4e32\u53e3\u7684\u5c5e\u6027\uff0c4\u4e2aButton\u5206\u522b\u7528\u6765”\u6253\u5f00\u4e32\u53e3” “\u5173\u95ed\u4e32\u53e3””\u53d1\u9001\u6570\u636e””\u4fdd\u5b58\u6570\u636e” \uff0c2\u4e2aMemo\u63a7\u4ef6\u5206\u522b\u7528\u6765\u663e\u793a\u63a5\u6536\u5230\u7684\u6570\u636e\u548c\u53d1\u9001\u7684\u6570\u636e\u3002\u518d\u52a0\u5165\u4e00\u4e2aShape\u63a7\u4ef6\u7528\u6765\u6807\u660e\u4e32\u53e3\u662f\u5426\u6253\u5f00\u3002<\/p>\n

ComboBox1\u7528\u6765\u8bbe\u7f6e\u4e32\u53e3\u53f7\uff0c\u901a\u8fc7\u5b83\u7684Items\u5c5e\u6027\u8bbe\u7f6e1\uff0c2\uff0c3\uff0c4\u56db\u4e2a\u5217\u8868\u9879\u5206\u522b\u8868\u793aCOM1,COM2,COM3,COM4\u53e3\u3002 ComboBox2\u7528\u6765\u8bbe\u7f6e\u6ce2\u7279\u7387\uff0cComboBox3\u7528\u6765\u8bbe\u7f6e\u5947\u5076\u6821\u9a8c\u4f4d\uff0cComboBox4\u7528\u6765\u8bbe\u7f6e\u6570\u636e\u4f4d\uff0cComboBox5\u7528\u6765\u8bbe\u7f6e\u505c\u6b62\u4f4d\u3002\u4ed6\u4eec\u7684\u7f3a\u7701\u503c\u5206\u522b\u662f9600\uff0cn\uff0c8\uff0c1\u3002<\/p>\n

Button1\u7528\u6765\u6253\u5f00\u4e32\u53e3\uff0cButton2\u7528\u6765\u5173\u95ed\u4e32\u53e3\uff0cButton3\u7528\u6765\u53d1\u9001\u6570\u636e\uff0cButton4\u7528\u6765\u4fdd\u5b58\u6570\u636e\u3002Memo1\u7528\u6765\u663e\u793a\u53d1\u9001\u7684\u6570\u636e\uff0cMemo2\u663e\u793a\u63a5\u6536\u7684\u6570\u636e\u3002Shape1\u7684Shape\u5c5e\u6027\u8bbe\u7f6e\u4e3astCircle\u3002
\n\u4e0b\u9762\u7ed9\u51fa\u90e8\u5206\u6e90\u7801\uff1a<\/p>\n

__fastcall TForm1::TForm1(TComponent* Owner)
\n: TForm(Owner)
\n{
\nif(MSComm1->PortOpen==true)
\n{
\nButton1->Enabled=false;
\nButton2->Enabled=true;
\nButton3->Enabled=true;
\nButton4->Enabled=true;
\nShape1->Brush->Color=clGreen;
\n}
\nelse
\n{
\nButton2->Enabled=true;
\nButton2->Enabled=false;
\nButton3->Enabled=false;
\nButton4->Enabled=false;
\nShape1->Brush->Color=clRed;
\n}
\n}
\nvoid __fastcall TForm1::Button1Click(TObject *Sender) \/ \/\u6253\u5f00\u4e32\u53e3
\n{
\nif(MSComm1->PortOpen!=true)
\n{
\nMSComm1->CommPort=StrToInt(ComboBox1->Text);\/\/\u9009\u62e9\u4e32\u53e3\u53f7
\nMSComm1->Settings=
\nComboBox2->Text+\",\"+
\nComboBox3->Text+\",\"+
\nComboBox4->Text+\",\"+
\nComboBox5->Text; file:\/\/\u8bbe\u7f6e\u4e32\u53e3\u7684\u5c5e\u6027\u6ce2\u7279\u7387\u3001\u5947\u5076\u6821\u9a8c\u3001\u6570\u636e\u4f4d\u548c\u3001\/\/\u505c\u6b62\u4f4d\u3002
\nMSComm1->InputMode=0;\/\/\u8bbe\u7f6e\u4f20\u5165\u6570\u636e\u7684\u683c\u5f0f\uff0c0\u8868\u793a\u6587\u672c\u5f62\u5f0f
\nMSComm1->PortOpen=true;\/\/\u6253\u5f00\u4e32\u53e3
\nButton1->Enabled=false;
\nButton2->Enabled=true;
\nButton3->Enabled=true;
\nButton4->Enabled=true;
\nShape1->Brush->Color=clGreen;
\n}
\n}
\nvoid __fastcall TForm1::Button2Click(TObject *Sender) \/ \/\u5173\u95ed\u4e32\u53e3
\n{
\nif(MSComm1->PortOpen!=false)
\n{
\nMSComm1->PortOpen=false;
\nButton1->Enabled=true;
\nButton2->Enabled=false;
\nButton3->Enabled=false;
\nButton4->Enabled=false;
\nShape1->Brush->Color=clRed;
\n}
\nelse
\n{
\nButton1->Enabled=false;
\nButton2->Enabled=true;
\nShape1->Brush->Color=clRed;
\n}
\n}<\/code><\/p>\n

MSComm\u63a7\u4ef6\u7684Input\u548cOutput\u5c5e\u6027\u5728Object Inspector\u4e2d\u662f\u770b\u4e0d\u5230\u7684\uff0c\u800c\u4e14\u5728C++Builder\u73af\u5883\u4e0b\u8fd9\u4e24\u4e2a\u5c5e\u6027\u5df2\u4e0d\u5728\u662fVB\u3001VC\u4e2d\u7684\u539f\u7c7b\u578b\uff0c\u800c\u662fOleVariant\u7c7b\u578b\uff0c\u4e5f\u5c31\u662f Ole\u4e07\u80fd\u53d8\u91cf\uff0c\u8fd9\u5c31\u9700\u8981\u6211\u4eec\u5728\u53d1\u9001\u63a5\u6536\u6570\u636e\u65f6\u8981\u628a\u6570\u636e\u8f6c\u6362\u6210Ole\u7c7b\u578b\u3002<\/p>\n

void __fastcall TForm1::Button3Click(TObject *Sender) file:\/\/\u53d1\u9001Memo2\u4e2d\u7684\u6570\u636e
\n{
\nMSComm1->Output=StringToOleStr(Memo2->Text); file:\/\/\u628aAnsiString\u578b\u8f6c\u5316\u6210\/\/Ole\u5f62\u5f0f\u3002
\n}<\/code><\/p>\n

\u901a\u8fc7OnComm\u4e8b\u4ef6\u63a5\u6536\u6570\u636e\uff0c\u5fc5\u987b\u628aMSComm\u7684RThreshold\u5c5e\u6027\u8bbe\u7f6e\u4e3a\u5927\u4e8e0\uff0c\u53ea\u6709\u8fd9\u6837\u5728\u63a5\u6536\u5230\u5b57\u7b26\u65f6\u624d\u4f1a\u4ea7\u751f\u4e00\u4e2aOnComm\u4e8b\u4ef6\u3002<\/p>\n

void __fastcall TForm1::MSComm1Comm(TObject *Sender)
\n{
\nAnsiString str; file:\/\/\u58f0\u660e\u4e00\u4e2aAnsiString\u7c7b\u578b\u7684\u53d8\u91cf
\nOleVariant s; file:\/\/\u58f0\u660e\u4e00\u4e2a\u7528\u4e8e\u63a5\u6536\u6570\u636e\u7684OleVariant\u53d8\u91cf\u3002
\nif(MSComm1->CommEvent==comEvReceive)
\n\/\/ \u63a5\u6536\u7f13\u51b2\u533a\u4e2d\u662f\u5426\u6536\u5230Rthreshold\u4e2a\u5b57\u7b26\u3002
\n{
\nif(MSComm1->InBufferCount)\/\/ \u662f\u5426\u6709\u5b57\u7b26\u9a7b\u7559\u5728\u63a5\u6536\u7f13\u51b2\u533a\u7b49\u5f85\u88ab\u53d6\u51fa
\n{
\ns=MSComm1->Input;\/\/\u63a5\u6536\u6570\u636e
\nstr=s.AsType(varString); file:\/\/\u628a\u63a5\u6536\u5230\u7684OleVariant\u53d8\u91cf\u8f6c\u6362\u6210AnsiString\u7c7b\u578b
\nMemo1->Text=Memo1->Text+str;\/\/\u628a\u63a5\u6536\u5230\u7684\u6570\u636e\u663e\u793a\u5728Memo1\u4e2d\u3002
\n}
\n}
\n}<\/code><\/p>\n

\u8981\u4fdd\u5b58\u6570\u636e\u5e94\u8be5\u518d\u52a0\u5165\u4e00\u4e2aSaveDialog\u6a21\u5757<\/p>\n

void __fastcall TForm1::Button4Click(TObject *Sender)
\nfile:\/\/\u628aMemo1\u4e2d\u7684\u6570\u636e\u4fdd\u5b58\u5728\u6307\u5b9a\u7684\u6587\u4ef6\u4e2d
\n{
\nAnsiString filename1;
\nSaveDialog1->Filter=\"Text files (*.txt)|*.txt|All files (*.*)|*.*\";\/\/\u6587\u4ef6\u7c7b\u578b\u8fc7\u6ee4\u5668
\nSaveDialog1->FilterIndex=2;
\nif(SaveDialog1->Execute())
\n{
\nfilename1=SaveDialog1->FileName;
\nMemo1->Lines->SaveToFile(filename1);\/\/\u628a\u6536\u5230\u7684\u6570\u636e\u4fdd\u5b58\u5728\u6587\u4ef6filename1\u4e2d
\n}
\n}<\/code><\/p>\n

\u56db\u3001\u7ed3\u675f\u8bed<\/strong><\/span><\/p>\n

\u4e0a\u9762\u7ed9\u51fa\u4e86C++ Builder\u4e2d\u5229\u7528MSComm\u63a7\u4ef6\u8fdb\u884c\u4e32\u884c\u901a\u4fe1\u7f16\u7a0b\u7684\u5b9e\u73b0\u548c\u90e8\u5206\u6e90\u7801\uff0c\u6709\u4e86\u4e0a\u9762\u7684\u53c2\u7167\u8bfb\u8005\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u9700\u8981\u7f16\u5199\u51fa\u5177\u6709\u53d1\u9001\u6587\u4ef6\u548c\u63a5\u6536\u6587\u4ef6\u529f\u80fd\u7684\u7a0b\u5e8f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6458\u8981\uff1a\u4e32\u53e3\u662f\u5e38\u7528\u7684\u8ba1\u7b97\u673a\u4e0e\u5916\u90e8\u4e32\u884c\u8bbe\u5907\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u901a\u9053\uff0c\u7531\u4e8e\u4e32\u884c\u901a\u4fe1\u65b9\u4fbf\u6613\u884c\uff0c\u6240\u4ee5\u5e94\u7528\u5e7f\u6cdb\u3002\u672c\u6587\u4ecb\u7ecd\u4e86\u5728C+ … \u7ee7\u7eed\u9605\u8bfb\u201c\u5728C++ Builder\u4e2d\u5229\u7528\u4e32\u884c\u901a\u4fe1\u63a7\u4ef6\u7f16\u7a0b\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[29,151,179,59],"class_list":["post-354","post","type-post","status-publish","format-standard","hentry","category-microsoft","tag-borland","tag-tutorial","tag-179","tag-59"],"_links":{"self":[{"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/posts\/354","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=354"}],"version-history":[{"count":0,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/posts\/354\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.axqd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=354"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}