dow();
InitCom();
}
BOOL TCommWin::WMCommNotify(TMessage &Mg)
{
UINT flag=0;
int id;
COMSTAT stat;
unsigned char SendChar;
static unsigned char
*p=ReceiveBuff;
static num=0;
int ret;
id=Mg.WParam;
switch(Mg.LP.Lo)
{
case CN_EVENT://有事件掩码中定义的事件发生
flag=GetCommEventMask(id,EV_BREAK);
if(flag & EV_BREAK)
FlushComm(id,1);
flag=GetCommEventMask(id,EV_RXFLAG);
if(flag & EV_ERR)
FlushComm(id,1);
flag=GetCommEventMask(id,EV_RXFLAG);
if(flag & EV_RXFLAG)//收到了事件字符0xff
{
SendChar=0x0f;
WriteComm(id,& SendChar,1);//向对方回0x0f
}
break;
case CN_RECEIVE://接收到了规定个字符或超时
do
{
ret=ReadComm(id,p,1);
if(ret>0)
{
p++;
num++;
}
}while((ret>0)&(num<10));
if(num>=10)//接收完一条消息
{
num=0;
//此处处理接收到的消息
p=ReceiveBuff;
SendChar=0x0f;
WriteComm(id,& SendChar,1);//向对方回0x0f
FlushComm(id,1);
}break;
}
flag=GetCommError(id,&stat);//消除错误(若有)
return 1;
}
void TCommApp::InitMainWindow()
{
MainWindow=new TCommWin(NULL, "Windows通信示例");
}
int PASCAL WinMain(HINSTANCE hInstance, HINSTANCE hPrevI
nstance,LPSTR 1pCmdLine,
int nCmdShow)
{
TCommApp CommApp("通信", hInstance,hPrevInstance,1pC
mdLine, nCmdShow);
CommApp.Run();
return CommApp.Status;
}，信捷职称论文写作发表网