Mercurial > sdl-ios-xcode
view docs/man3/SDL_GetRGB.3 @ 3095:75483112b97f
Date: Sat, 21 Mar 2009 19:41:52 -0700 (PDT)
From: Mason Wheeler
Subject: [SDL] Critical SDL 1.3 patch
Displaying a window created with SDL_CreateWindowFrom was causing stack overf
lows for me under certain conditions. After far too much work trying to get
Visual Studio's debugger to play nice with a program written in Delphi, I tra
cked it down to a nasty reentrancy cycle in the WndProc handling. Here's a p
atch that fixes the problem
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 23 Mar 2009 02:02:30 +0000 |
| parents | 546f7c1eb755 |
| children | 1238da4a7112 |
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.TH "SDL_GetRGB" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_GetRGB \- Get RGB values from a pixel in the specified pixel format\&. .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBvoid \fBSDL_GetRGB\fP\fR(\fBUint32 pixel, SDL_PixelFormat *fmt, Uint8 *r, Uint8 *g, Uint8 *b\fR); .SH "DESCRIPTION" .PP Get RGB component values from a pixel stored in the specified pixel format\&. .PP This function uses the entire 8-bit [0\&.\&.255] range when converting color components from pixel formats with less than 8-bits per RGB component (e\&.g\&., a completely white pixel in 16-bit RGB565 format would return [0xff, 0xff, 0xff] not [0xf8, 0xfc, 0xf8])\&. .SH "SEE ALSO" .PP \fI\fBSDL_GetRGBA\fP\fR, \fI\fBSDL_MapRGB\fP\fR, \fI\fBSDL_MapRGBA\fP\fR, \fI\fBSDL_PixelFormat\fR\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01