按鈕 hover 在 QT 中具有垂直布局的選項卡小部件中不起作用 [英]Button hover is not working in Tab widget with vertical layout in QT
如何在 Qt 中向小部件添加一個圓圈而無需不必要地重新繪制所有內容? [英]How to add a circle to a widget in Qt without needlessly repainting everything?