How to hide/unhide GtkWindow while preserving its location

Platform
1

If I have a widget that is a window:

GtkWidget* wdg = GTK_WIDGET(wnd);

Then, when I hide this widget (window) using:

gtk_widget_set_visible(wdg, false);

and later make it visible again with:

gtk_widget_set_visible(wdg, true);

the window appears in a different location.

Is there a way to hide and unhide the window while preserving its location?

2

No: the location is determined by the window manager, and applications have no say in that.

3

Windows and macOS provide hide/unhide mechanisms that preserve windows location and size. I expected that on windows and macOS hide/unhide shouldn’t cause window reappearing at different location. I tested on both systems… and it simply reappears in the middle of the screen. I think this is not a big issue to fix.

4

There is nothing to fix: GTK does not support positioning windows, and defers to the window management stack for everything related to the location of a window on every platform.

5

You do not need to reposition anything. Just to use proper methods for hiding/unhiding windows on windows at least. On windows it is very simple call ShowWindow(hwnd, true|false).

6

First of all, that’s not a thing anywhere else; on Wayland, for instance, the native surface gets destroyed on hide.

Second of all:

If you want to change this behaviour on Windows, file an issue against the Windows backend of GTK.

7

Well, it’s just Wayland without support for window movement. Other desktop managers do.

And again hide/unhide shouldn’t reposition anything.

I do not know where to change it. Anyway I will fix it on my (client) side.

I do hope someone interested it gtk’s well being beyond linux, will see this and fix it accordingly.