Saving Plots as an image file (png, bmp etc.)

[alexi_nedo]

Hi,

I have a problem while saving a Qwt plot as an png image.
I use QPixmap::grabWidget method but only some part of the plot
is written to png file (only label texts and title), and the plot itself is not written to png file...
I added snapshots of original plot and saved plot. Any idea to fix the problem?

int main(int argc, char **argv)
{
    QApplication a(argc, argv);
 
    Plot plot;
#if QT_VERSION < 0x040000
    a.setMainWidget(&plot);
#endif
    plot.resize(600,400);
    plot.show();
 
    QPixmap p = QPixmap::grabWidget(&plot, 0, 0, plot.width(), plot.height());
    p.save("C:\\plot.png","png");
 
    return a.exec(); 
}

int main(int argc, char **argv)
{
    QApplication a(argc, argv);

    Plot plot;
#if QT_VERSION < 0x040000
    a.setMainWidget(&plot);
#endif
    plot.resize(600,400);
    plot.show();
	
    QPixmap p = QPixmap::grabWidget(&plot, 0, 0, plot.width(), plot.height());
    p.save("C:\\plot.png","png");
    
    return a.exec(); 
}

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