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我寫程序與調制解調器(它使用海耶斯命令)通信,這是行得通的。 GUI是用QT編程的,但是與COM端口的通信是用winapi庫編寫的。當我想將我的程序消息從一臺計算機發送到另一臺計算機時,我遇到了問題,我無法發送波蘭字符(它們被'?'重新填滿),我該如何解決它?有沒有人有想法?而且我還有一個問題,我無法從我的程序發送消息給Microsoft HyperTerminal,HyperTerminal收到了一些東西,但不是我發送的內容。 THX對於任何幫助:)與超級終端通信[QT和WINApi]
重要的部分代碼: 與連接端口:
portHandle = CreateFile (portName, GENERIC_WRITE | GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
GetCommState (portHandle, &dcb);
switch(ui->comboBox->currentIndex())
{
case 0 : dcb.BaudRate=CBR_110; break;
case 1 : dcb.BaudRate=CBR_300; break;
case 2 : dcb.BaudRate=CBR_600; break;
case 3 : dcb.BaudRate=CBR_1200; break;
case 4 : dcb.BaudRate=CBR_2400; break;
case 5 : dcb.BaudRate=CBR_4800; break;
case 6 : dcb.BaudRate=CBR_9600; break;
case 7 : dcb.BaudRate=CBR_14400; break;
case 8 : dcb.BaudRate=CBR_19200; break;
case 9 : dcb.BaudRate=CBR_38400; break;
case 10 : dcb.BaudRate=CBR_56000; break;
case 11 : dcb.BaudRate=CBR_57600; break;
case 12 : dcb.BaudRate=CBR_115200; break;
case 13 : dcb.BaudRate=CBR_128000; break;
case 14 : dcb.BaudRate=CBR_256000; break;
}
dcb.fBinary = TRUE;
dcb.fParity = TRUE;
dcb.fOutxCtsFlow = FALSE;
dcb.fOutxDsrFlow = FALSE;
dcb.fDtrControl = DTR_CONTROL_ENABLE;
dcb.fDsrSensitivity = FALSE;
dcb.fTXContinueOnXoff = TRUE;
dcb.fOutX = FALSE;
dcb.fInX = FALSE;
dcb.fErrorChar = FALSE;
dcb.fNull = FALSE;
dcb.fRtsControl = RTS_CONTROL_ENABLE;
dcb.fAbortOnError = FALSE;
//dcb.ByteSize = dataBits;
dcb.DCBlength = sizeof (DCB);
switch(ui->comboBox_3->currentIndex())
{
case 1 : dcb.Parity = EVENPARITY; break;
case 3 : dcb.Parity = MARKPARITY; break;
case 2 : dcb.Parity = ODDPARITY; break;
case 4 : dcb.Parity = SPACEPARITY; break;
case 0 : dcb.Parity = NOPARITY; break;
}
switch (ui->comboBox_4->currentIndex())
{
case 0 : dcb.StopBits = ONESTOPBIT; break;
case 1 : dcb.StopBits = ONE5STOPBITS;break;
case 2 : dcb.StopBits = TWOSTOPBITS; break;
}
switch (ui->comboBox_2->currentIndex())
{
case 0 : dcb.ByteSize = 5; break;
case 1 : dcb.ByteSize = 6;break;
case 2 : dcb.ByteSize= 7; break;
case 3 : dcb.ByteSize = 8; break;
}
SetCommState (portHandle, &dcb);
GetCommTimeouts (portHandle, &CommTimeouts);
CommTimeouts.ReadIntervalTimeout = MAXDWORD;
CommTimeouts.ReadTotalTimeoutMultiplier = 0;
CommTimeouts.ReadTotalTimeoutConstant = 0;
CommTimeouts.WriteTotalTimeoutMultiplier = 10;
CommTimeouts.WriteTotalTimeoutConstant = 1000;
SetCommTimeouts (portHandle, &CommTimeouts);
發送味精:
void MainWindow::Send(char c)
{
do
{WriteFile(portHandle, &c, 1, &cbWritten, NULL);
}
while (!(cbWritten));
}
void MainWindow::on_pushButton_clicked()
{
QString str = ui->lineEdit->text();
std::string str2;
ui->lineEdit->clear();
str2 = str.toStdString();
for(int i=0; i < str2.size();i++)
{
Send(str2[i]);
//qDebug()<< str2[i];
}
Send(char(13));
}
接收味精:
void ReaderThread::run()
{
char c;
while(1)
{
c = Receive();
if(c==13)
{
emit insertPlainText("\n");
}
else
{
emit insertPlainText(QString(c));
}
}
}
char ReaderThread::Receive()
{
char c;
do{
ReadFile(portHandle, &c, 1, &cbRead, NULL);
}
while (!(cbRead));
return c;
}
如何將QChar轉換爲char以便能夠正確接收? – javaAmator 2010-05-09 11:15:41
你不能,沒有足夠大的錘子。如果您不想自己編碼,請使用某種QT或操作系統函數對utf-8進行編碼。閱讀:http://www.joelonsoftware.com/articles/Unicode.html – 2010-05-09 11:51:15