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Bug 865

Summary: Windows "default beep" when any Alt+Key is used
Product: SDL Reporter: Alistair John Strachan <alistair>
Component: eventsAssignee: Ryan C. Gordon <icculus>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2 CC: amaranth72, ensiform, eruditionalsoul
Version: 2.0.3   
Hardware: x86_64   
OS: Windows 8   
Attachments: Modified SDL_windowsevents.c

Description Alistair John Strachan 2009-10-25 16:39:02 UTC 
When pressing Alt+<Key> with DIB or directx, Windows will generate a "default beep" (as though the application can't handle the event), even though the event is processed by the application correctly.

Confirmed as happening on Windows XP and Windows 7; an SDL 1.2.13 built with the same toolchain doesn't have this problem.
Comment 1 Sam Lantinga 2009-11-16 21:00:50 UTC 
This is fixed in subversion with revision 5262.
You can get the fix here:
http://www.libsdl.org/tmp/SDL-1.2.zip
Comment 2 Alistair John Strachan 2009-11-21 07:44:15 UTC 
(In reply to comment #1)
> This is fixed in subversion with revision 5262.
> You can get the fix here:
> http://www.libsdl.org/tmp/SDL-1.2.zip

Cheers Sam, confirmed.
Comment 3 Sam Lantinga 2009-11-21 15:45:51 UTC 
Great, thanks!
Comment 4 Andrew L 2014-10-09 12:57:15 UTC 
This is now happening on windows 8.1 with SDL 2.0.3. I added this code to the SDL_windowsevent.c in the WIN_WindowProc function:

case WM_MENUCHAR:
{
return MNC_CLOSE << 16;
}
break;

Which resolved the issue.
Comment 5 Andrew L 2014-10-09 13:03:42 UTC 
Created attachment 1892 [details]
Modified SDL_windowsevents.c

Here is the file I modified.
Comment 6 Alex Szpakowski 2014-10-10 06:55:23 UTC 
https://bugzilla.libsdl.org/show_bug.cgi?id=2669
Comment 7 ensiform 2015-01-24 03:21:39 UTC 
The correct fix for this is to handle the WM_SYSCOMMAND SC_KEYMENU and return similar to how SDL2 currently eats SC_SCREENSAVE / SC_MONITORPOWER

Located https://hg.libsdl.org/SDL/file/8d826bc39a45/src/video/windows/SDL_windowsevents.c#l795

compare wParam & 0xFFF0 and if it is equal to SC_KEYMENU, return 0 (or optionally add a flag like the screensaver though default to true maybe?

This bug is same as #2669, reporting there as well.
Comment 8 Ryan C. Gordon 2015-02-19 06:32:14 UTC 
Marking a large number of bugs with the "triage-2.0.4" keyword at once. Sorry
if you got a lot of email from this. This is to help me sort through some bugs
in regards to a 2.0.4 release. We may or may not fix this bug for 2.0.4,
though!
Comment 9 Ryan C. Gordon 2015-02-19 21:01:09 UTC 
Going to close this one as FIXED as it dealt with SDL 1.2; we'll deal with 2.0 in Bug #2669.

--ryan.