Mercurial > sdl-ios-xcode
view docs/man3/SDL_ConvertSurface.3 @ 3191:91b335df6fc8
Fixed bug #750
Since many different event structures include windowID it should be placed near
the beginning of the structure (preferably right after type) so it's position
is the same between different events.
This is to avoid code like this:
if (event.type == SDL_WINDOWEVENT)
win = event.window.windowID;
else if ((SDL_EVENTMASK(event.type) & SDL_KEYEVENTMASK) != 0)
win = event.key.windowID;
else if (event.type == SDL_TEXTINPUT)
win = event.text.windowID;
else if (event.type == SDL_MOUSEMOTION)
win = event.motion.windowID;
else if ((SDL_EVENTMASK(event.type) & (SDL_MOUBUTTONDOWNMASK |
SDL_MOUBUTTONUPMASK)) != 0)
win = event.button.windowID;
else if (event.type == SDL_MOUSEWHEEL)
win = event.wheel.windowID;
...
in favor of:
win = event.window.windowID;
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 10 Jun 2009 14:00:21 +0000 |
| parents | 546f7c1eb755 |
| children | 1238da4a7112 |
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.TH "SDL_ConvertSurface" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_ConvertSurface \- Converts a surface to the same format as another surface\&. .SH "SYNOPSIS" .PP \fB#include "SDL/SDL\&.h" .sp \fBSDL_Surface *\fBSDL_ConvertSurface\fP\fR(\fBSDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags\fR); .SH "DESCRIPTION" .PP Creates a new surface of the specified format, and then copies and maps the given surface to it\&. If this function fails, it returns \fBNULL\fP\&. .PP The \fBflags\fR parameter is passed to \fI\fBSDL_CreateRGBSurface\fP\fR and has those semantics\&. .PP This function is used internally by \fI\fBSDL_DisplayFormat\fP\fR\&. .PP This function can only be called after SDL_Init\&. .SH "RETURN VALUE" .PP Returns either a pointer to the new surface, or \fBNULL\fP on error\&. .SH "SEE ALSO" .PP \fI\fBSDL_CreateRGBSurface\fP\fR, \fI\fBSDL_DisplayFormat\fP\fR, \fI\fBSDL_PixelFormat\fR\fR, \fI\fBSDL_Surface\fR\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01