Problem With frameless windows Qdark Style

fadu

hi i have 2 forms
and i want to add frameless to the 2 forms when i start first form from main it's 100%
but when start the second form the application force close
code in the first form

    FramelessWindow framelessWindow;
    MainWindow *mainWindow = new MainWindow ;
    framelessWindow.setFixedSize(1223,660);
    framelessWindow.setContent(mainWindow);
    framelessWindow.show();

mrjj

Hi
is it this one ?
https://github.com/Jorgen-VikingGod/Qt-Frameless-Window-DarkStyle

Its sample shows

FramelessWindow framelessWindow;
as its in main.cpp and it never runs out of scope due to the app.exec()

However, if you place this in a function
then
FramelessWindow framelessWindow;
must be
FramelessWindow *framelessWindow = new FramelessWindow ;

as else it will be deleted as soon as function ends as pr normal c++ scope rules.
(as @mpergand tries to point you to )

mpergand

@fadu said in Problem With frameless windows Qdark Style:

FramelessWindow framelessWindow;
MainWindow *mainWindow = new MainWindow ;
framelessWindow.setFixedSize(1223,660);
framelessWindow.setContent(mainWindow);
framelessWindow.show();

Most common newbee mistake posted in this forum !!
One hint for you: local variable

fadu

@mpergand
why you don't say all solution
yes i'm new in qt aand if is Forbidden to post here
i''m sorry for that i don't know

mpergand

@fadu said in Problem With frameless windows Qdark Style:

why you don't say all solution

Because it's basic C/C++ programming and i think it's essential you find by yourself what's wrong.

fadu

@mpergand ok thank you maybe another person help me

mpergand

@fadu
I have allready given you the clue: local variable.
If you don't understand what i'm saying, i think you better have to learn C/C++ in a first place.

fadu

@mpergand
my friend i'm new in qt but i have a good experince in c++ which local varible i need to do that

mpergand

@fadu
All right, in fact i don't understand what you are trying to do ...
The all code you posted look utterly bizar to me.

Please post the all method where this code is in.
What framelessWindow.setContent(mainWindow); is supposed to do ?

mrjj

Hi
is it this one ?
https://github.com/Jorgen-VikingGod/Qt-Frameless-Window-DarkStyle

Its sample shows

FramelessWindow framelessWindow;
as its in main.cpp and it never runs out of scope due to the app.exec()

However, if you place this in a function
then
FramelessWindow framelessWindow;
must be
FramelessWindow *framelessWindow = new FramelessWindow ;

as else it will be deleted as soon as function ends as pr normal c++ scope rules.
(as @mpergand tries to point you to )

fadu

@mrjj said in Problem With frameless windows Qdark Style:

FramelessWindow *framelessWindow = new FramelessWindow ;

@mrjj yes it is
Thank you very much for your wonderful explanation. The problem has been solved as you explained