Custom widget - Position of columns and rows

If you change the state of a widget, it emits a signal and the corresponding slot is executed ensuring the functionality we want for this small example The

slot> You can use CSS to style the disclosure widget, and you can programmatically open and close the widget by settingremoving its open

seth vs horus slot A widget that controls where a child of a Stack is positioned A Positioned widget must be a descendant of a Stack, and the path from the Positioned widget

setan slot How do i change the the position of scene in QGraphics View I am and one more thing ,if use the drived class slot the application crashing,