comdlg.cpp

来自「本程序是通过串口」· C++ 代码 · 共 803 行 · 第 1/2 页

CPP
803 行
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12
	return 0;
}


//串口消息函数(自己建立的消息)
LRESULT CComDlg::OnCommNotify(WPARAM wParam, LPARAM lParam)
{
	

	if( (!m_bConnected) || (wParam&EV_RXCHAR)!=EV_RXCHAR)
	{
		SetEvent(m_hPostMsgEvent);	//允许允许发送下一个信息
		return 0L;
	}
	//开始接收数据
	int nLength;
	char buf[4096/4];
	CString str;
	nLength=ReadComm(buf,100);		//获取数据和长度
	if(nLength)
	{
		for(int i=0;i<nLength;i++)
			str+=buf[i];
	
		m_receive.ReplaceSel(str);
	
	}
	SetEvent(m_hPostMsgEvent);		//允许发送下一个信息
	return 0L;


}



//读取串口数据，返回长度。
//输入参数:要读的长度
//注意事项:输入的要读的长度如果比实际缓冲里面的数据量大的话，返回的是较小的值
DWORD CComDlg::ReadComm(char *buf, DWORD dwLength)
{
	DWORD length=0;
	COMSTAT ComStat;
	DWORD dwErrorFlags;

	ClearCommError(h_com,&dwErrorFlags,&ComStat);
	length=min(dwLength, ComStat.cbInQue);		//看上面的注意事项
	ReadFile(h_com,buf,length,&length,&m_osRead);

	return length;
}

void CComDlg::OnButton4() 
{
	// TODO: Add your control notification handler code here
    COMSTAT ComStat;
	ULONG nLength=0;
	CString send("a");
	UpdateData(true);
	ULONG szLength = send.GetLength();
	
	char *sz = new char[szLength];
	if(sz==NULL)
		return;
	memcpy(sz,send.GetBuffer(szLength),szLength);
	DWORD dwErrorFlags;

	ClearCommError(h_com,&dwErrorFlags,&ComStat);
	BOOL fState=WriteFile(h_com,sz,szLength,&nLength,&m_osWrite);
	if(!fState)
	{
		ULONG my_error=GetLastError();
		if(my_error==ERROR_IO_PENDING)
		{
			GetOverlappedResult(h_com,&m_osWrite,&nLength,TRUE);
		}
		else
			nLength=0;
	}
	delete[] sz;
	sz=NULL;
	
	
}

void CComDlg::OnButton5() 
{
	// TODO: Add your control notification handler code here
    COMSTAT ComStat;
	ULONG nLength=0;
	CString send("b");
	UpdateData(true);
	ULONG szLength = send.GetLength();
	
	char *sz = new char[szLength];
	if(sz==NULL)
		return;
	memcpy(sz,send.GetBuffer(szLength),szLength);
	DWORD dwErrorFlags;

	ClearCommError(h_com,&dwErrorFlags,&ComStat);
	BOOL fState=WriteFile(h_com,sz,szLength,&nLength,&m_osWrite);
	if(!fState)
	{
		ULONG my_error=GetLastError();
		if(my_error==ERROR_IO_PENDING)
		{
			GetOverlappedResult(h_com,&m_osWrite,&nLength,TRUE);
		}
		else
			nLength=0;
	}
	delete[] sz;
	sz=NULL;
	
}

void CComDlg::OnButton2() 
{
	// TODO: Add your control notification handler code here
    COMSTAT ComStat;
	ULONG nLength=0;
	CString send("c");
	UpdateData(true);
	ULONG szLength = send.GetLength();
	
	char *sz = new char[szLength];
	if(sz==NULL)
		return;
	memcpy(sz,send.GetBuffer(szLength),szLength);
	DWORD dwErrorFlags;

	ClearCommError(h_com,&dwErrorFlags,&ComStat);
	BOOL fState=WriteFile(h_com,sz,szLength,&nLength,&m_osWrite);
	if(!fState)
	{
		ULONG my_error=GetLastError();
		if(my_error==ERROR_IO_PENDING)
		{
			GetOverlappedResult(h_com,&m_osWrite,&nLength,TRUE);
		}
		else
			nLength=0;
	}
	delete[] sz;
	sz=NULL;
		
}

void CComDlg::OnButton6() 
{
	// TODO: Add your control notification handler code here
    COMSTAT ComStat;
	ULONG nLength=0;
	CString send("d");
	UpdateData(true);
	ULONG szLength = send.GetLength();
	
	char *sz = new char[szLength];
	if(sz==NULL)
		return;
	memcpy(sz,send.GetBuffer(szLength),szLength);
	DWORD dwErrorFlags;

	ClearCommError(h_com,&dwErrorFlags,&ComStat);
	BOOL fState=WriteFile(h_com,sz,szLength,&nLength,&m_osWrite);
	if(!fState)
	{
		ULONG my_error=GetLastError();
		if(my_error==ERROR_IO_PENDING)
		{
			GetOverlappedResult(h_com,&m_osWrite,&nLength,TRUE);
		}
		else
			nLength=0;
	}
	delete[] sz;
	sz=NULL;
		
}

void CComDlg::OnButton7() 
{
	// TODO: Add your control notification handler code here
    COMSTAT ComStat;
	ULONG nLength=0;
	CString send("e");
	UpdateData(true);
	ULONG szLength = send.GetLength();
	
	char *sz = new char[szLength];
	if(sz==NULL)
		return;
	memcpy(sz,send.GetBuffer(szLength),szLength);
	DWORD dwErrorFlags;

	ClearCommError(h_com,&dwErrorFlags,&ComStat);
	BOOL fState=WriteFile(h_com,sz,szLength,&nLength,&m_osWrite);
	if(!fState)
	{
		ULONG my_error=GetLastError();
		if(my_error==ERROR_IO_PENDING)
		{
			GetOverlappedResult(h_com,&m_osWrite,&nLength,TRUE);
		}
		else
			nLength=0;
	}
	delete[] sz;
	sz=NULL;
		
}

void CComDlg::OnLeft() 
{
	// TODO: Add your control notification handler code here
    COMSTAT ComStat;
	ULONG nLength=0;
	CString send("l");
	UpdateData(true);
	ULONG szLength = send.GetLength();
	
	char *sz = new char[szLength];
	if(sz==NULL)
		return;
	memcpy(sz,send.GetBuffer(szLength),szLength);
	DWORD dwErrorFlags;

	ClearCommError(h_com,&dwErrorFlags,&ComStat);
	BOOL fState=WriteFile(h_com,sz,szLength,&nLength,&m_osWrite);
	if(!fState)
	{
		ULONG my_error=GetLastError();
		if(my_error==ERROR_IO_PENDING)
		{
			GetOverlappedResult(h_com,&m_osWrite,&nLength,TRUE);
		}
		else
			nLength=0;
	}
	delete[] sz;
	sz=NULL;
		
}

void CComDlg::OnRight() 
{
	// TODO: Add your control notification handler code here
    COMSTAT ComStat;
	ULONG nLength=0;
	CString send("r");
	UpdateData(true);
	ULONG szLength = send.GetLength();
	
	char *sz = new char[szLength];
	if(sz==NULL)
		return;
	memcpy(sz,send.GetBuffer(szLength),szLength);
	DWORD dwErrorFlags;

	ClearCommError(h_com,&dwErrorFlags,&ComStat);
	BOOL fState=WriteFile(h_com,sz,szLength,&nLength,&m_osWrite);
	if(!fState)
	{
		ULONG my_error=GetLastError();
		if(my_error==ERROR_IO_PENDING)
		{
			GetOverlappedResult(h_com,&m_osWrite,&nLength,TRUE);
		}
		else
			nLength=0;
	}
	delete[] sz;
	sz=NULL;
		
}

void CComDlg::OnMiddle() 
{
	// TODO: Add your control notification handler code here
    COMSTAT ComStat;
	ULONG nLength=0;
	CString send("s");
	UpdateData(true);
	ULONG szLength = send.GetLength();
	
	char *sz = new char[szLength];
	if(sz==NULL)
		return;
	memcpy(sz,send.GetBuffer(szLength),szLength);
	DWORD dwErrorFlags;

	ClearCommError(h_com,&dwErrorFlags,&ComStat);
	BOOL fState=WriteFile(h_com,sz,szLength,&nLength,&m_osWrite);
	if(!fState)
	{
		ULONG my_error=GetLastError();
		if(my_error==ERROR_IO_PENDING)
		{
			GetOverlappedResult(h_com,&m_osWrite,&nLength,TRUE);
		}
		else
			nLength=0;
	}
	delete[] sz;
	sz=NULL;
		
}

void CComDlg::OnForword() 
{
	// TODO: Add your control notification handler code here
    COMSTAT ComStat;
	ULONG nLength=0;
	CString send("y");
	UpdateData(true);
	ULONG szLength = send.GetLength();
	
	char *sz = new char[szLength];
	if(sz==NULL)
		return;
	memcpy(sz,send.GetBuffer(szLength),szLength);
	DWORD dwErrorFlags;

	ClearCommError(h_com,&dwErrorFlags,&ComStat);
	BOOL fState=WriteFile(h_com,sz,szLength,&nLength,&m_osWrite);
	if(!fState)
	{
		ULONG my_error=GetLastError();
		if(my_error==ERROR_IO_PENDING)
		{
			GetOverlappedResult(h_com,&m_osWrite,&nLength,TRUE);
		}
		else
			nLength=0;
	}
	delete[] sz;
	sz=NULL;	
}

void CComDlg::OnBackoff() 
{
	// TODO: Add your control notification handler code here
    COMSTAT ComStat;
	ULONG nLength=0;
	CString send("z");
	UpdateData(true);
	ULONG szLength = send.GetLength();
	
	char *sz = new char[szLength];
	if(sz==NULL)
		return;
	memcpy(sz,send.GetBuffer(szLength),szLength);
	DWORD dwErrorFlags;

	ClearCommError(h_com,&dwErrorFlags,&ComStat);
	BOOL fState=WriteFile(h_com,sz,szLength,&nLength,&m_osWrite);
	if(!fState)
	{
		ULONG my_error=GetLastError();
		if(my_error==ERROR_IO_PENDING)
		{
			GetOverlappedResult(h_com,&m_osWrite,&nLength,TRUE);
		}
		else
			nLength=0;
	}
	delete[] sz;
	sz=NULL;	
}

void CComDlg::OnStop() 
{
	// TODO: Add your control notification handler code here
    COMSTAT ComStat;
	ULONG nLength=0;
	CString send("f");
	UpdateData(true);
	ULONG szLength = send.GetLength();
	
	char *sz = new char[szLength];
	if(sz==NULL)
		return;
	memcpy(sz,send.GetBuffer(szLength),szLength);
	DWORD dwErrorFlags;

	ClearCommError(h_com,&dwErrorFlags,&ComStat);
	BOOL fState=WriteFile(h_com,sz,szLength,&nLength,&m_osWrite);
	if(!fState)
	{
		ULONG my_error=GetLastError();
		if(my_error==ERROR_IO_PENDING)
		{
			GetOverlappedResult(h_com,&m_osWrite,&nLength,TRUE);
		}
		else
			nLength=0;
	}
	delete[] sz;
	sz=NULL;	
}
12

comdlg.cpp - 源码说明

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