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Patch by me to fix crash described below. --ryan. To: sdl@libsdl.org From: Rainer Deyke <rainerd@eldwood.com> Date: Tue, 16 Aug 2005 01:08:18 -0600 Subject: [SDL] Bug report: SDL_CreateRGBSurface with SDL_HWSURFACE crashes If SDL is in full-screen mode with a hardware video surface on OS X, SDL_CreateRGBSurface with SDL_HWSURFACE crashes. The crash occurs on line 109 of SDL_Surface.c. This was tested on OS X 10.3.9 with both SDL 1.2.8 and the latest CVS. Here is a small C++ program that demonstrates the problem: #include "SDL.h" #include <stdio.h> namespace { void wait_for_key() { SDL_Event e; printf("%d\n", SDL_GetAppState()); while (SDL_WaitEvent(&e)) { if (e.type == SDL_KEYDOWN || e.type == SDL_QUIT) return; } } } int main(int, char *[]) { SDL_Init(SDL_INIT_VIDEO); SDL_Surface *screen = SDL_SetVideoMode(640, 480, 32, SDL_FULLSCREEN | SDL_HWSURFACE); SDL_Surface *s = SDL_CreateRGBSurface(SDL_HWSURFACE, 640, 480, 32, screen->format->Rmask, screen->format->Gmask, screen->format->Bmask, screen->format->Amask); wait_for_key(); if (s) SDL_FreeSurface(s); SDL_Quit(); printf("Success!\n"); return 0; }
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 18 Aug 2005 06:46:32 +0000
parents 355632dca928
children
line wrap: on
line source

<HTML
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>SDL_PollEvent</TITLE
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>SDL_PollEvent</H1
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><H2
>Name</H2
>SDL_PollEvent&nbsp;--&nbsp;Polls for currently pending events.</DIV
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>Synopsis</H2
><DIV
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><P
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><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_PollEvent</B
></CODE
>(SDL_Event *event);</CODE
></P
><P
></P
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><A
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></A
><H2
>Description</H2
><P
>Polls for currently pending events, and returns <SPAN
CLASS="RETURNVALUE"
>1</SPAN
> 
if there are any pending events, or <SPAN
CLASS="RETURNVALUE"
>0</SPAN
> if there 
are none available.  </P
><P
>If <TT
CLASS="PARAMETER"
><I
>event</I
></TT
> is not <TT
CLASS="LITERAL"
>NULL</TT
>, the next 
event is removed from the queue and stored in that area.</P
></DIV
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CLASS="REFSECT1"
><A
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></A
><H2
>Examples</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>SDL_Event event; /* Event structure */

.
.
.
/* Check for events */
while(SDL_PollEvent(&#38;event)){  /* Loop until there are no events left on the queue */
  switch(event.type){  /* Process the appropiate event type */
    case SDL_KEYDOWN:  /* Handle a KEYDOWN event */         
      printf("Oh! Key press\n");
      break;
    case SDL_MOUSEMOTION:
      .
      .
      .
    default: /* Report an unhandled event */
      printf("I don't know what this event is!\n");
  }
}</PRE
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>SDL_Event</SPAN
></A
>,
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><TT
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>SDL_WaitEvent</TT
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>,
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