Mercurial > sdl-ios-xcode
view docs/man3/SDL_MapRGBA.3 @ 1523:21b1fbb53f4a
(patch tweaked a bit)
Date: Tue, 14 Mar 2006 03:30:11 +0000
From: Peter Mulholland
Subject: [SDL] Windows MessageBox() strangeness fixes
Hello all,
I *think* this should fix the issues that people were seeing with
MessageBox() not working and therefore assert() on mingw/msvc. Forgive
me if i've screwed up making the diff file - I'm a total newb when it
comes to things like CVS and diff.
It modifies a few files as I saw that FlushMessageQueue() was in both
the windx5 and windib driver, so I moved this into wincommon. It was
also in the gapi driver, so I changed that too. The function is now
WIN_FlushMessageQueue() in src/video/wincommon/SDL_syswm.c
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 14 Mar 2006 04:00:03 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
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.TH "SDL_MapRGBA" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_MapRGBA\- Map a RGBA color value to a pixel format\&. .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBUint32 \fBSDL_MapRGBA\fP\fR(\fBSDL_PixelFormat *fmt, Uint8 r, Uint8 g, Uint8 b, Uint8 a\fR); .SH "DESCRIPTION" .PP Maps the RGBA color value to the specified pixel format and returns the pixel value as a 32-bit int\&. .PP If the format has a palette (8-bit) the index of the closest matching color in the palette will be returned\&. .PP If the specified pixel format has no alpha component the alpha value will be ignored (as it will be in formats with a palette)\&. .SH "RETURN VALUE" .PP A pixel value best approximating the given RGBA color value for a given pixel format\&. If the pixel format bpp (color depth) is less than 32-bpp then the unused upper bits of the return value can safely be ignored (e\&.g\&., with a 16-bpp format the return value can be assigned to a \fBUint16\fP, and similarly a \fBUint8\fP for an 8-bpp format)\&. .SH "SEE ALSO" .PP \fISDL_GetRGB\fR, \fISDL_GetRGBA\fR, \fISDL_MapRGB\fR, \fISDL_PixelFormat\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01