KWin::DetectWidget 0 0 417 362 Information About Selected Window false QFrame::HLine QFrame::Sunken Class: false false Role: false false Type: false false Title: false false Extra role: false false Machine: false false For selecting all windows belonging to a specific application, selecting only window class should usually work. Use window &class (whole application) true For selecting a specific window in an application, both window class and window role should be selected. Window class will determine the application, and window role the specific window in the application; many applications do not provide useful window roles though. Use window class and window &role (specific window) With some (non-KDE) applications whole window class can be sufficient for selecting a specific window in an application, as they set whole window class to contain both application and window role. Use &whole window class (specific window) Match also window &title Qt::Vertical QSizePolicy::Expanding 20 161