Mercurial > sdl-ios-xcode
view docs/man3/SDL_MapRGBA.3 @ 561:4bcf7dd06c47
Date: Sat, 14 Dec 2002 13:33:05 -0500
From: Darrell Walisser
Subject: Re: crash in SDL / OSX
> Yes, compose keys and other "dead" keys should have unicode 0.
> As a hack, if you get multiple composed characters, you can send the
> sequence with a valid unicode and a keysym of 0. It's because of
> things like this that I'm separating the key and char events in SDL 2.0
I've done this and here's the patch.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 15 Dec 2002 09:09:31 +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