view docs/man3/SDL_GetRGBA.3 @ 967:cda407d627a3

Date: Tue, 5 Oct 2004 11:04:02 -0400 From: Bob Ippolito Subject: [SDL] PATCH: Fix for release count bug in SDL_QuartzWM SDL_QuartzWM incorrectly does [window close]; [window release]; The semantics for -[NSWindow close] are as follows: Removes the receiver from the screen. If the receiver is set to be released when closed, a release message is sent to the object after the current event is completed. For an NSWindow object, the default is to be released on closing, while for an NSPanel object, the default is not to be released. You can use the setReleasedWhenClosed: method to change the default behavior. This patch simply removes the incorrect release.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 12 Nov 2004 21:29:52 +0000
parents e5bc29de3f0a
children 546f7c1eb755
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.TH "SDL_GetRGBA" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_GetRGBA\- Get RGBA values from a pixel in the specified pixel format\&.
.SH "SYNOPSIS"
.PP
\fB#include "SDL\&.h"
.sp
\fBvoid \fBSDL_GetRGBA\fP\fR(\fBUint32 pixel, SDL_PixelFormat *fmt, Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a\fR);
.SH "DESCRIPTION"
.PP
Get RGBA 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])\&.
.PP
If the surface has no alpha component, the alpha will be returned as 0xff (100% opaque)\&.
.SH "SEE ALSO"
.PP
\fISDL_GetRGB\fR, \fISDL_MapRGB\fR, \fISDL_MapRGBA\fR, \fISDL_PixelFormat\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01