How to make a Delphi TSpeedButton stay pressed if it's the only one in the group

Question

I\'m not sure why the TSpeedButton has this property but when a TSpeedButton is the only button of a given groupindex, it doesn\'t stay pressed, whether or not \"AllowAllUp\

Answer 1

I just tried that in Delphi 7 (Build 4.453):

• create new application
• add TSpeedButton to form
• set AllowAllUp := true;
• set GroupIndex := 1;
• run application

When clicking the button it toggles its down state without any other code needed.