c++qt中如何得知另一个qprocess结束

在 C++ Qt 中，`QProcess` 类用于管理和控制外部进程。要检测 `QProcess` 是否已结束，你可以通过连接 `QProcess::finished()` 或 `QProcess::stateChanged()` 信号到槽函数。下面是一个简单的例子：

#include <QObject>
#include <QProcess>

class MyObject : public QObject {
    Q_OBJECT

public:
    explicit MyObject(QObject *parent = nullptr) : QObject(parent) {
        // 创建并启动 QProcess 对象
        process = new QProcess(this);
        connect(process, &QProcess::finished, this, [this]() {
            qDebug() << "The process has finished";
            // 在这里处理完成后的操作
        });
        QStringList arguments = {"your_command", "arguments"};
        if (process->start(arguments)) {
            qDebug() << "Process started successfully.";
        } else {
            qCritical() << "Failed to start the process.";
        }
    }

private:
    QProcess *process;
};

int main(int argc, char **argv) {
    QApplication app(argc, argv);
    MyObject myObj;
    return app.exec();
}