Window not drawing until ConfigureNotify event received

[nakst]

Window not drawing until ConfigureNotify event received

[aolo2]

Hmm, it seems this only happens if another window is already open. If gf is the only window, is draws instantly. Some x11 event related probably?

[aolo2]

It's almost certainly ConfigureNotify.

[nakst]

What window manager are you using?

[aolo2]

I'm on Openbox 3.6.1

[nakst]

I tried running gf on Openbox 3.6.1, and the window drew correctly without having to resize it -- have you changed any configuration settings that might affect this? I am not familiar with X11 programming; is there no guarantee the ConfigureNotify message will be sent after creating a window? I'd rather not have to add a workaround if it isn't necessary.

[aolo2]

It appears ConfigureNotify is not guaranteed to be sent on window creation:
https://tronche.com/gui/x/xlib/events/window-state-change/configure.html

Out of the functions listed, my guess would be that calling XRaiseWindow is the most logical choice.

[nakst]

A window is mapped and its position in the stacking order is changed by calling XMapRaised().

XMapRaised is called here https://github.com/nakst/gf/blob/master/luigi.h#L3961 on the main window. Surely this should generate the ConfigureNotify event?

[nakst]

Could you try adding

XResizeWindow(ui.display, window->window, width + 1, height + 1);

after the call to XMapRaised and see if makes a difference?

[aolo2]

It does work (even without the + 1)

[aolo2]

It is related to me having window decorations disabled. I tried enabling them back, and then ConfigureNotify arrives. An openbox bug maybe? I'll contact the devs.

If the xlib docs say that XMapRaised should generate the ConfigureNotify event, then it's probably them who should fix it, not you.

[aolo2]

This got fixed, by the way. I have no idea where or how, though..