(C++) QDesktopWidget

 

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)

 

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#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(); }