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Date: Sat, 10 Apr 2004 02:25:33 -0400 From: Glenn Maynard To: sdl@libsdl.org Subject: [SDL] SDL_SetVideoMode() failing and not setting an error (patch) Running an OpenGL SDL application off 1.2.7, at SDL_InitSubSystem(SDL_INIT_VIDEO) time: Warning: Unable to initialize AAlib mouseUsing AAlib driver: Slang driver 1.0 (slang) SDL_SetVideoMode then fails; SDL_GetError() returns "". The installation problem is straightforward: X (the higher priority driver) isn't running, so SDL is falling back on aalib. However, no error is being set when aalib fails to initialize. This also happens with the svgalib driver. SDL_video.c line ~653 sets mode to NULL, since aalib didn't return an OpenGL surface. Line ~711 ("failed setting a video mode") returns NULL. The attached patch sets an error. It's a horrible, useless error message--it should really say eg. "aalib does not support OpenGL"; this should probably be done earlier in the individual drivers, too.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 11 Apr 2004 19:54:40 +0000
parents 355632dca928
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>SDL Event Structures.</H1
><DIV
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><DL
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><B
>Table of Contents</B
></DT
><DT
><A
HREF="sdlevent.html"
>SDL_Event</A
>&nbsp;--&nbsp;General event structure</DT
><DT
><A
HREF="sdlactiveevent.html"
>SDL_ActiveEvent</A
>&nbsp;--&nbsp;Application visibility event structure</DT
><DT
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>SDL_KeyboardEvent</A
>&nbsp;--&nbsp;Keyboard event structure</DT
><DT
><A
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>SDL_MouseMotionEvent</A
>&nbsp;--&nbsp;Mouse motion event structure</DT
><DT
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>SDL_MouseButtonEvent</A
>&nbsp;--&nbsp;Mouse button event structure</DT
><DT
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>SDL_JoyAxisEvent</A
>&nbsp;--&nbsp;Joystick axis motion event structure</DT
><DT
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>SDL_JoyButtonEvent</A
>&nbsp;--&nbsp;Joystick button event structure</DT
><DT
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>SDL_JoyHatEvent</A
>&nbsp;--&nbsp;Joystick hat position change event structure</DT
><DT
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>SDL_JoyBallEvent</A
>&nbsp;--&nbsp;Joystick trackball motion event structure</DT
><DT
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>SDL_ResizeEvent</A
>&nbsp;--&nbsp;Window resize event structure</DT
><DT
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>SDL_ExposeEvent</A
>&nbsp;--&nbsp;Quit requested event</DT
><DT
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>SDL_SysWMEvent</A
>&nbsp;--&nbsp;Platform-dependent window manager event.</DT
><DT
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>SDL_UserEvent</A
>&nbsp;--&nbsp;A user-defined event type</DT
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>SDL_QuitEvent</A
>&nbsp;--&nbsp;Quit requested event</DT
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>SDL_keysym</A
>&nbsp;--&nbsp;Keysym structure</DT
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>SDLKey</A
>&nbsp;--&nbsp;Keysym definitions.</DT
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