view docs/man3/SDL_PumpEvents.3 @ 1626:a80e1e0880b8

Fixed bug #176 [I'm fixing this for the public headers, but I'm not going to bother for the SDL library code (yet)] To clarify: Normaly, GCC (or, to be precise, the preprocessor) will ignore this, and compile the code happily. However, one can specify -Wundef to get a warning about this. One can probably argue whether to consider this a bug or not; but I think that (a) from a semantic point of view, using "#if FOO" when FOO is not defined is strange, and (b) since it is possible to trigger a warning about this, and a trivial fix exists, it should be corrected. I can think of two alternative patches, BTW: 1) Simply use #define HAVE_FOO 0, instead of not defining HAVE_FOO at all 2) Change #if HAVE_FOO to #if HAVE_FOO+0 which always does the right thing. But I think I still prefer the attached patch :-).
author Sam Lantinga <slouken@libsdl.org>
date Thu, 13 Apr 2006 13:38:40 +0000
parents e5bc29de3f0a
children 546f7c1eb755
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.TH "SDL_PumpEvents" "3" "Tue 11 Sep 2001, 22:59" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_PumpEvents\- Pumps the event loop, gathering events from the input devices\&.
.SH "SYNOPSIS"
.PP
\fB#include "SDL\&.h"
.sp
\fBvoid \fBSDL_PumpEvents\fP\fR(\fBvoid\fR);
.SH "DESCRIPTION"
.PP
Pumps the event loop, gathering events from the input devices\&.
.PP
\fBSDL_PumpEvents\fP gathers all the pending input information from devices and places it on the event queue\&. Without calls to \fBSDL_PumpEvents\fP no events would ever be placed on the queue\&. Often calls the need for \fBSDL_PumpEvents\fP is hidden from the user since \fI\fBSDL_PollEvent\fP\fR and \fI\fBSDL_WaitEvent\fP\fR implicitly call \fBSDL_PumpEvents\fP\&. However, if you are not polling or waiting for events (e\&.g\&. your filtering them), then you must call \fBSDL_PumpEvents\fP to force an event queue update\&.
.PP
.RS
\fBNote:  
.PP
You can only call this function in the thread that set the video mode\&.
.RE
.SH "SEE ALSO"
.PP
\fI\fBSDL_PollEvent\fP\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:59