c++windowswinapiqtforeground

Bring window to front -> raise(),show(),activateWindow() don’t work

In my Qt-application I open a URL in the default-browser. Afterwards I want to bring the main-window of my application to the front again.

I tried all approaches I could find but none worked. All it does is blink in the taskbar (of Window 7) Here’s an example:

this->viewer->show();
this->viewer->raise();
this->viewer->activateWindow();

*viewer is a pointer to a QmlApplicationViewer which is derived from QDeclarativeView

Solution

  • This problem is specific to Windows. If the active window belongs to some process, then Windows does not allow other processes to change the active Window.

    (Do not try the following: https://wiki.qt.io/Qt_project_org_faq#QWidget_::activateWindow.28.29_-_behavior_under_windows)