Qt: destroy handle uses QObject_deleteLater(), so sometimes widget can stay visible on screen.

Original Reporter info from Mantis: zeljko@holobit.net @zeljan1

• Reporter name: Zeljan Rikalo

Description:

Issue is opened just to track fix about it. We'll hide widget inside Release, before Qt deletes it.

Steps to reproduce:

ide/allcompileroptions.pas is doing layout of items in scrollbox inside OnIdle method.

Mantis conversion info:

• Mantis ID: 27781
• Fixed in version: 1.5 (SVN)
• Fixed in revision: 48617 (#1228e862)
• Target version: 1.4