Platform-Specific Functions

Qt provides a few low-level global functions for fine-tuning applications. Most of these perform very specific tasks and are platform-specific. In general, we recommend that you try using Qt's public API before resorting to using any functions mentioned here.

These functions are exported by QtCore and QtGui, but most of them aren't declared in Qt's header files. To use them in your application, you must declare them before calling them. For example:

 #ifdef Q_WS_X11
 void qt_x11_wait_for_window_manager(QWidget *widget);
 #endif

 int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
     ...
     window.show();
 #ifdef Q_WS_X11
     qt_x11_wait_for_window_manager(&window);
 #endif
     ...
     return app.exec();
 }

These functions will remain as part of Qt for the lifetime of Qt 4.

Functions: