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Bug 1933

Summary: SDL_WM_SetIcon() no longer works in X11
Product: SDL Reporter: Ozkan Sezer <sezeroz>
Component: videoAssignee: Ryan C. Gordon <icculus>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: HG 1.2   
Hardware: All   
OS: Linux   

Description Ozkan Sezer 2013-06-27 16:26:45 UTC 
http://hg.libsdl.org/SDL/rev/ea34ef329509 :
Starting with the HG commit ea34ef329509, SDL_WM_SetIcon() doesn't work
with X11 if called before calling SDL_SetVideoMode() as advised in the
man page. It does work, however, if called after SDL_SetVideoMode().
This is with using SDL-1.2, don't know (and don't yet care about) SDL2.
Commenting out the _NET_WM_ICON src/video/x11/SDL_x11wm.c:X11_SetIcon()
and recompiling brings back the icon. Tested on Fedora 16 (x86_64) and
Fedora 9 (x86).

Looking at the code briefly, _NET_WM_ICON requires an existing window:
if SDL_WM_SetIcon() is called before SDL_SetVideoMode(), we won't have
any window around to change its properties. If the man page is correct
then this seems as a regression against 1.2.15.
Comment 1 Ryan C. Gordon 2013-07-12 01:40:20 UTC 
I have removed the _NET_WM_ICON code from SDL 1.2 in hg changeset 14827e7e4d92.

--ryan.