QT主窗体在屏幕居中显示

#include
<QtGui/QtGui>

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

{

QApplication app(argc, argv);

//让窗体居中显示

QDesktopWidget
*

desktop
=

QApplication
::
desktop();

int

width
=

desktop->
availableGeometry(-
1
).
width();

int

height
=

desktop->
availableGeometry(-
1
).
height();

win.move((width - win.width())/2, (height - win.height())/2);

win.show();

return
app.exec();

}