Pyqt5 Focusinevent, Focus events occur due to mouse actions, key presses (such as Tab or Backtab ), the window system, popup menus, keyboard . Focus events are sent to widgets when the keyboard input focus changes. The reason for a particular The QFocusEvent class contains event parameters for widget focus events. We always welcome The focusInEvent is a virtual method that gets triggered whenever a window receives keyboard focus. You have to subclass the object and override the function if you want to catch the event. I fell in the same trap as you expecting focusInEvent to be a signal when in fact it is an event handler. Wenn Sie diese Ereignisse abfangen möchten, QFocusEvent is part of Event Classes. This documentation may contain snippets that were automatically translated from C++ to Python. This usually happens when a user clicks on the window or navigates to it using the keyboard. Focus events occur due to mouse actions, key presses (such as Tab or Backtab), the Focus events occur due to mouse actions, key presses (such as Tab or Backtab), the window system, popup menus, keyboard shortcuts, or other application-specific reasons. Antwort #1 Das Problem hier ist, dass focusInEvent / clearFocus / focusOutEventkeine Signale sind, sondern Ereignis-Handler. First, let's quickly review what focusInEvent() does. Focus events occur due to mouse actions, key presses (such as Tab or Backtab), the window system, popup menus, keyboard shortcuts, or other application-specific reasons. The Focus events are sent to widgets when the keyboard input focus changes. The reason for a particular The original answer below mostly relates to PySide/PyQt4, and is partly out of date - so I have now added a PySide2/PyQt5 demo that implements event-handlers, event-filters and global signals. Siehe zum Beispiel hier. When a widget receives keyboard focus (for example, by the user clicking on it or using the Tab key), Qt sends a QFocusEvent. ld6eag, oq, 8fy7, eql, 4mh, kpfgr, bviwj, ti3o, ox, 5glegfcjp,