AllowAllUp: Button;
The AllowAllUp property determines whether all buttons included into the group can be released at the same time.
The AllowAllUp property is set to False by default, one button in the group must be always released.
If the property is set to True, all buttons can be released. Pressing or releasing of buttons is made on the mouse click or by pressing the SPACE key when the button gets focused. Status of the buttons can also be controlled by changing value of the IPPSwitchButton.Down property.
See also: