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在另一个系统上运行时,Qt串行端口程序崩溃

[英]Qt serial port program crashes when run on another system

我在Windows 10 PC上修改了此代码,它编译并运行时没有崩溃。

#include <QtSerialPort/QSerialPort>

#include <QTextStream>
#include <QCoreApplication>
#include <QFile>
#include <QStringList>

QT_USE_NAMESPACE

int main(int argc, char *argv[])
{
    QCoreApplication coreApplication(argc, argv);
    int argumentCount = QCoreApplication::arguments().size();
    QStringList argumentList = QCoreApplication::arguments();

    QTextStream standardOutput(stdout);

    if (argumentCount == 1) {
        standardOutput << QObject::tr("Usage: %1 <serialportname>     [baudrate]").arg(argumentList.first()) << endl;
        return 1;
    }

    QSerialPort serialPort;
    QString serialPortName = argumentList.at(1);
    serialPort.setPortName(serialPortName);

    int serialPortBaudRate = (argumentCount > 2) ? argumentList.at(2).toInt() : QSerialPort::Baud9600;
    serialPort.setBaudRate(serialPortBaudRate);

    if (!serialPort.open(QIODevice::WriteOnly)) {
        standardOutput << QObject::tr("Failed to open port %1, error:     %2").arg(serialPortName).arg(serialPort.errorString()) << endl;
        return 1;
    }

    QFile dataFile("C:\\SerialCommand.dat");
    if (!dataFile.open(QIODevice::ReadOnly)) {
        standardOutput << QObject::tr("Failed to open file for reading") <<     endl;
        return 1;
    }

    QByteArray writeData(dataFile.readAll());
    dataFile.close();

    if (writeData.isEmpty()) {
        standardOutput << QObject::tr("Either no data was currently available on the standard input for reading, or an error occurred for port %1, error: %2").arg(serialPortName).arg(serialPort.errorString()) << endl;
        return 1;
    }

    qint64 bytesWritten = serialPort.write(writeData);

    if (bytesWritten == -1) {
        standardOutput << QObject::tr("Failed to write the data to port %1, error: %2").arg(serialPortName).arg(serialPort.errorString()) << endl;
        return 1;
    } else if (bytesWritten != writeData.size()) {
        standardOutput << QObject::tr("Failed to write all the data to port %1, error: %2").arg(serialPortName).arg(serialPort.errorString()) << endl;
        return 1;
    } else if (!serialPort.waitForBytesWritten(5000)) {
        standardOutput << QObject::tr("Operation timed out or an error occurred for port %1, error: %2").arg(serialPortName).arg(serialPort.errorString()) << endl;
        return 1;
    }

    standardOutput << QObject::tr("Data successfully sent to port %1").arg(serialPortName) << endl;

    printf("\n\ntest");

    return 0;
}

我将Qt设置为发布模式,并使用以下.dll文件打包了该应用程序:

  1. msvcp120d.dll
  2. msvcr120d.dll
  3. Qt5Core.dll
  4. Qt5Cored.dll
  5. Qt5SerialPort.dll
  6. Qt5SerialPortd.dll
  7. Qt5Widgets.dll
  8. qwindows.dll

当我在另一个系统(也是Windows 10)上运行该应用程序时,该程序立即崩溃-是的,我确实将SerialCommand.dat移到了C驱动器上的正确位置。 有什么想法吗?

您正在打包dll的调试版本(以d结尾),而不是发行版本。

阅读Qt部署文档 ,尤其是最后一部分(从“ Application Dependencies”到最后)。

依赖关系遍历器可以帮助您找到实际的依赖关系,从理论上讲, windeployqt应该可以自动创建包含所有所需文件的发行目录。

另请参见另一个问题 ,但这是针对使用QML的应用程序的,因此它比您的情况更为复杂。

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