QPushButton : focus {
border: none;
outline: none;
}в пакет входит qmake для visual studio 2019, но должно работать и с 2022 по описанию
Note: An attempt to control the RTS signal in the HardwareControl mode will fail with error code set to UnsupportedOperationError, because the signal is automatically controlled by the driver.
Radio buttons are auto-exclusive by default. Only one button can be checked at any time amongst radio buttons that belong to the same parent item; checking another button automatically unchecks the previously checked one. For radio buttons that do not share a common parent, ButtonGroup can be used to manage exclusivity.
Qt::FramelessWindowHint | Qt::Tool | Qt::WindowStaysOnTopHint