How to close GUI application?

[Mucip]

Hi,
I have GUI progam and many forms in it. Ofcourse I have MainForm. And I have EXIT menu. Whan I trigger it "close()" command running.
But in Application Outputscreen I see below message. Is it something wrong?..

15:27:17: Starting D:\Belgeler\Qt\build-Yonetim-Desktop_Qt_5_13_1_MSVC2017_64bit-Debug\debug\Yonetim.exe ...
15:30:50: The program has unexpectedly finished.
15:30:50: The process was ended forcefully.
15:30:50: D:/Belgeler/Qt/build-Yonetim-Desktop_Qt_5_13_1_MSVC2017_64bit-Debug/debug/Yonetim.exe crashed.

Regards,
Mucip:)

[jsulm]

@Mucip You should run through debugger.
One reason could be double delete: if you delete something (in destructor for example) which has a parent so it is deleted second time by the parent.

[Mucip]

Hi @jsulm ,
You're right sir. I was trying to delete pointer twice unfortunately. :)

Regards,
Mucip:)