Qt5.15.14 does not display the title bar on the linuxfb platform

Leyu

Hi,
Can anyone please help me to fix this problem.
When using Qt 5.15.14, the title bar properties were set, but the title bar does not display when running on the LinuxFB platform.

The code for the settings is as follows.

this->setWindowFlags(Qt::Dialog | Qt::CustomizeWindowHint | Qt::WindowTitleHint);

jsulm

@Leyu You are overwriting flags, you should instead add them to already set flags (windowFlags())

Leyu

@jsulm It still doesn't show up after changing the code, I suspect it has something to do with the linuxfb platform. Is there any other better way.

The code change is as follows.

this->setWindowFlags(this->windowFlags() | Qt::Dialog | Qt::CustomizeWindowHint | Qt::WindowTitleHint);

SGaist

Hi,

Unless you are running a window manager on top of LinuxFB, there will be no window decoration.

Leyu

@SGaist Thank you. Is there any example that can be referred to, please?

jsulm

@Leyu Example for what?
Do you run a window manager or not?

Leyu

@jsulm Sorry, I've just come into contact with Qt for a short time, so I don't know the window manager very well.

jsulm

@Leyu It has nothing to do with Qt. It is a Linux thing.

JoeCFD

@Leyu the Linux framebuffer platform doesn't natively support window decorations such as title bars. I guess it is not hard to create your own titlebar.