Quellcode

DCB sDcb;
HANDLE hFile;
COMMTIMEOUTS sTo;


switch (rg->ItemIndex)
{
case 0:
   {
   hFile=CreateFile("\\\\.\\COM1",GENERIC_READ|GENERIC_WRITE,0,0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0) ;
   break;
   }
case 1:
   {
   hFile=CreateFile("\\\\.\\COM2",GENERIC_READ|GENERIC_WRITE,0,0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0) ;
   break;
   }
}
if(hFile==INVALID_HANDLE_VALUE)return;
memset(&sDcb,0,sizeof(sDcb));
sDcb.DCBlength = sizeof(sDcb);
sDcb.BaudRate = 9600; // Baudrate
sDcb.fParity = FALSE;
sDcb.fBinary = TRUE;
sDcb.Parity = NOPARITY;// Kein Paritybit
sDcb.StopBits = ONESTOPBIT;
sDcb.fOutxCtsFlow = FALSE;
sDcb.fOutxDsrFlow = FALSE;
sDcb.fDtrControl = DTR_CONTROL_ENABLE;
sDcb.fRtsControl = RTS_CONTROL_ENABLE;           +
sDcb.fDsrSensitivity = FALSE;
sDcb.fAbortOnError = FALSE;
sDcb.ByteSize = 8; // 8 Datenbits

if(!SetCommState(hFile,&sDcb))
{
CloseHandle(hFile);
return;
}

sTo.ReadIntervalTimeout = MAXDWORD; // 0 ms Read-Tomeout
sTo.ReadTotalTimeoutMultiplier = 0;
sTo.ReadTotalTimeoutConstant = 0;
sTo.WriteTotalTimeoutMultiplier= 1; // 1*2 ms Write Timeout
sTo.WriteTotalTimeoutConstant = 2;

if(!SetCommTimeouts((HANDLE)hFile,&sTo))
{
CloseHandle(hFile);
return;
}




DWORD dwCount;
char* test = new char[ Edit1->Text.Length() + 1 ];
strcpy( test, Edit1->Text.c_str());

WriteFile(hFile,test,Edit1->Text.Length(),&dwCount,0);
CloseHandle(hFile);