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我编写了与调制解调器通信的程序（它使用 Hayes 命令），这是有效的。GUI 是用 QT 编程的，但与 COM 端口的通信是用 winapi 库编写的。当我想将我的程序消息从一台计算机发送到另一台计算机时遇到问题，我无法发送波兰字符（它们被“？”取代），我该如何解决？有没有人有想法？我还有一个问题，我无法从我的程序向 Microsoft HyperTerminal 发送消息，HyperTerminal 收到了一些东西，但不是我发送的那个。感谢任何帮助:)

重要的代码片段： 与端口连接：

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);

发送味精：

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;

}
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1 回答 1

1

您正在将 16 位 QChar 锤击到 8 位孔中。您需要为每个字符发送和接收 2 个字节，或者将自己限制为 8 位字符编码。

于 2010-05-08T19:40:09.533 回答