嵌入式截屏程序（QT）

#include <QApplication>
#include <QString>
#include <QPixmap>
#include <QDesktopWidget>

#define DEFAULT_NAME "/mnt/screenshot.PNG"

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QString fileName = DEFAULT_NAME;
    if (argc > 1)
        fileName = argv[1];

    QPixmap scrPic = QPixmap::grabWindow(QApplication::desktop()->winId());
    bool ret = scrPic.save(fileName, "PNG");

    if (ret)
    {
        qDebug("Screenshot is saved to: %s", fileName.toLatin1().data());
    }
    else
    {
        qCritical("Failed to save file: %s", fileName.toLatin1().data());
    }

    return 0;
}

源码文件：copyscreen.rar