How to disable default qpushbutton

I created qpushbuttons with qtdesigner and as a default I want to make them 开发者_StackOverflow社区disabled without clicking them in other words before the dialog screen comes they should already have been disabled.I ask that because I write a cinema seat reservation and when somebody buy the seat I make it disabled and the color red but after closing and re-running the program they disappear and they turn to default. I want to do is; when I re-run the program they should be seen disabled and color red. How can I do that. Thank you.

You can do that from QtDesigner, the advantage being you don't need to code anything.

Select your QPushButton, and make sure the enabled property is not checked.

Before you call yourDialog->show(), execute yourDialog->yourPushButton->setDisabled().