Change title font of Qt Main Window

sehnkim

Hello experts.

I am trying to change the title font of the Qt Main window with "Segoe UI".
I tried changing style sheet and Font etc, but I couldn't make it.
Actually, I could do for labels, but not for the title.

Any comments would be really appreciated.
Thanks.

tham

Maybe what you need is "setWindowTitle();"

SGaist

Hi,

The title bar is handled by the window manager not by Qt so it's not something you can modify within the app by default.

sehnkim

@SGaist
Thanks a lot for your comment. :)
Then, there is nothing I can do in Qt for changing the title bar font? Only way is to use the windows manager somehow?

Ni.Sumi

Hi @sehnkim ,

AFAIK, Some one can't force the title bar font from the Qt as Mr. @SGaist said . It's completely from the desktop settings. You can change this from the Desktop settings . if your are really worried about the font size. But the problem is. the desktop setting will be applicable to all windows on Windows.

sehnkim

This post is deleted!

VRonin

https://forum.qt.io/topic/62615/how-to-insert-image-on-this-forum

mrjj

@sehnkim
Hi
sadly dragging images to forum post is bugged. we cant see the image.
Please use external site such as postimage.org (or what u prefer)

About drawing Title bar or borders:
This is called decorations and is beyond Qts control. As already stated it's
not really possible in any platform neutral way.

So the only solutions is to
1: make a fake windows widget and draw caption and implement dragging etc.
This is a road of pain as if to be used as a Mainwindow it will show some of its fake nature in
various aspects of the OS.
2: use native SDK
This covers it ok and also discuss Win native api calls to use to make possible.
https://forum.qt.io/topic/3258/how-to-draw-to-the-windows-title-bar-with-qt-is-this-possible
Note that this will ofc not work on linux etc.

sehnkim

Thank you so much @Ni.Sumi and @SGaist

May I ask you one follow-up question?
As shown in the attached picture, I need to change the color of the title bar (refer to the green arrow) and the color of the border line (refer to the red arrow) of the main window.
I am not sure if I can change them or not. Any comments would be really appreciated.

Thanks a lot.

https://s20.postimg.org/ycgqe4e5p/gui.png

SGaist

You might be able to do that with some native API on Windows but I haven't tested them. This article might help you get further

Vijaykarthikeyan

@SGaist so we can't customize the title bar of the application window of QML?

SGaist

@Vijaykarthikeyan Qt does not manage window decoration. That's the OS that does it.

CPPUIX

@Vijaykarthikeyan Perhaps this could be useful:

Qt Blog: Custom client-side window decorations in Qt 5.15

Vijaykarthikeyan

@Abderrahmene_Rayene thank you