Hi, everybody:

I want keep a pushbutton be in a down state until I want to chang it in a up state. I use a qgroupbox as several pushbutton's parrent, I can use setDown(true) to make a pushbutton in a down state, but to my disappointed, when my mouse clicked in a QScrollArea window which is in the same program, the pushbutton in down state will automatically change to be in up state. Why?
What i want is make a pushbutton always be in a down state until I make it be in up state?
What can I do?
Thanks lot.