| 术语 | transmitcommchar |
| 释义 | TransmitCommChar 语法： C++ BOOL WINAPI TransmitCommChar( __in HANDLE hFile, __in char cChar ); TransmitCommChar功能 发送一个指定的字符之前，在指定的通信设备的输出缓冲区任何未决的数据。 参数 hFile [in] 一个句柄，通信设备。 CreateFile函数返回此句柄。 CChar的 [in] 字符进行传输。 返回值 如果函数成功，返回值为非零。 如果函数失败，返回值是零。为了获得更多错误信息，调用GetLastError。 备注 该TransmitCommChar函数可用于发送一个中断字符(如CTRL + C键)到主机系统。 如果该设备不能传输，TransmitCommChar不能称为反复。一旦TransmitCommChar放置在输出缓冲区一个字符，字符必须在传输功能可以再次调用。如果前面的字尚未发送，TransmitCommChar返回一个错误。 要求： 最低支持：client－Windows 2000专业版 最低支持server－Windows 2000服务器 HeaderWinbase.h(头文件：winuser.h) LibraryKernel32.lib DLLKernel32.dll 参见 通讯功能 通信资源 CreateFile WaitCommEvent 如果有任何问题和意见，请发送给微软(wsddocfb@microsoft.com) 生成日期：2009年7月30日 ＝＝英文原文＝＝TransmitCommChar Function Transmits a specified character ahead of any pending data in the output buffer of the specified communications device. Syntax C++ BOOL WINAPI TransmitCommChar( __in HANDLE hFile, __in char cChar ); Parameters hFile [in] A handle to the communications device. The CreateFile function returns this handle. cChar [in] The character to be transmitted. Return Value If the function succeeds, the return value is nonzero. If the function fails, the return value is zero. To get extended error information, call GetLastError . Remarks The TransmitCommChar function is useful for sending an interrupt character (such as a CTRL+C) to a host system. If the device is not transmitting, TransmitCommChar cannot be called repeatedly. Once TransmitCommChar places a character in the output buffer, the character must be transmitted before the function can be called again. If the previous character has not yet been sent, TransmitCommChar returns an error. Requirements Minimum supported clientWindows 2000 Professional Minimum supported serverWindows 2000 Server HeaderWinbase.h (include Windows.h) LibraryKernel32.lib DLLKernel32.dll See Also Communications Functions Communications Resources CreateFile WaitCommEvent Send comments about this topic to Microsoft Build date: 7/30/2009 ＝＝原始网址＝＝http://msdn.microsoft.com/en-us/library/aa363473(VS.85).aspx\n |
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