在2000下CreateFile成功,但是WriteFile失败,错误号87,同步异步都是如此,而且在有些机器上成功,有些机器失败,但是所有的机器用超级终端测试都是成功的,晕了。
同步代码如下:
//打开串口
ModemInfo[iChannelNo].h_Comm=CreateFile(lpCom,
GENERIC_READ|GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,
NULL); DWORD aaa=WriteFile(ModemInfo[iChannelNo].h_Comm,acBuffer,strlen(acBuffer),&dwLen,NULL);请各位多多指教阿
同步代码如下:
//打开串口
ModemInfo[iChannelNo].h_Comm=CreateFile(lpCom,
GENERIC_READ|GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,
NULL); DWORD aaa=WriteFile(ModemInfo[iChannelNo].h_Comm,acBuffer,strlen(acBuffer),&dwLen,NULL);请各位多多指教阿
void ErrorBox()
{
LPVOID lpMsgBuf; if(0 != FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &lpMsgBuf,
0,
NULL))
{
AfxMessageBox((char *) lpMsgBuf);
}
else
{
char buffer[256]; sprintf(buffer, "Error: %d", GetLastError());
AfxMessageBox(buffer);
} LocalFree( lpMsgBuf );
}