Mercurial > sdl-ios-xcode
view docs/man3/SDL_VideoModeOK.3 @ 3238:96492d29034a
David Carre to Sam
When i call the "SDL_Quit()" function, it call the func "SDL_QuitSubSystem(SDL_INIT_EVERYTHING)", which call the "SDL_VideoQuit()" function.
It's where i'm lost, this function "SDL_VideoQuit()" will recall the "SDL_Quit()" function (i don't find where it is called), which in turn recall the "SDL_QuitSubSystem(SDL_INIT_EVERYTHING)", which in turn recall "SDL_VideoQuit()", which cause a "double free" seg fault since it has been already called.
I have set the num_displays to 0 instead of 1, so it wont free it twice in the videoquit function loop.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 18 Aug 2009 03:26:53 +0000 |
parents | 546f7c1eb755 |
children | 1238da4a7112 |
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.TH "SDL_VideoModeOK" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_VideoModeOK \- Check to see if a particular video mode is supported\&. .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBint \fBSDL_VideoModeOK\fP\fR(\fBint width, int height, int bpp, Uint32 flags\fR); .SH "DESCRIPTION" .PP \fBSDL_VideoModeOK\fP returns \fB0\fR if the requested mode is not supported under any bit depth, or returns the bits-per-pixel of the closest available mode with the given width, height and requested \fIsurface\fR flags (see \fI\fBSDL_SetVideoMode\fP\fR)\&. .PP The bits-per-pixel value returned is only a suggested mode\&. You can usually request and bpp you want when \fIsetting\fR the video mode and SDL will emulate that color depth with a shadow video surface\&. .PP The arguments to \fBSDL_VideoModeOK\fP are the same ones you would pass to \fISDL_SetVideoMode\fR .SH "EXAMPLE" .PP .nf \f(CWSDL_Surface *screen; Uint32 bpp; \&. \&. \&. printf("Checking mode 640x480@16bpp\&. "); bpp=SDL_VideoModeOK(640, 480, 16, SDL_HWSURFACE); if(!bpp){ printf("Mode not available\&. "); exit(-1); } printf("SDL Recommends 640x480@%dbpp\&. ", bpp); screen=SDL_SetVideoMode(640, 480, bpp, SDL_HWSURFACE); \&. \&.\fR .fi .PP .SH "SEE ALSO" .PP \fI\fBSDL_SetVideoMode\fP\fR, \fI\fBSDL_GetVideoInfo\fP\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01