QDesktopWidget is a Qt class to get information about the screen/monitor.

The code below, similar to How to get the screen size? shows how to use QDesktopWidget to obtain the screen size, like this screenshot (png).

Download the Qt Creator project 'QDesktopWidget' (zip)


#include <QApplication>

#include <QDesktopWidget>

#include <QDialog>



int main(int argc, char *argv[])

{

  QApplication a(argc, argv);



  const QRect sz = QApplication::desktop()->rect();



  QString w; w.setNum(sz.width());

  QString h; h.setNum(sz.height());



  QDialog d;

  d.setWindowTitle("Screen size: " + w + " x " + h);

  d.show();



  return a.exec();

}

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(C++) QDesktopWidget