view docs/man3/SDL_GetEventFilter.3 @ 4392:2b8c1aea633b SDL-1.2

Fixed bug #898 Jeremiah Morris 2009-12-09 16:07:17 PST No-op GlobalToLocal translations in fullscreen mode On my MacBook Pro running 10.6, I noticed a small upward bias on mouse movement in a fullscreen SDL application. The app uses WarpCursor and GetMouseState in a loop to measure relative movement. I tracked it down to NSWindow's convertBaseToScreen: routine, which added a 2-pixel offset on the Y coordinate instead of the expected (+0,+0) translation. In fullscreen mode, QZ_PrivateWarpCursor() does not translate the desired position through QZ_PrivateGlobalToLocal() before passing it to the Core Graphics system. However, QZ_GetMouseLocation() does call the reverse QZ_PrivateLocalToGlobal() even in fullscreen mode. This asymmetry caused problems each time the mouse was moved.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 11 Dec 2009 15:31:37 +0000
parents 1238da4a7112
children
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.TH "SDL_GetEventFilter" "3" "Tue 11 Sep 2001, 22:59" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_GetEventFilter \- Retrieves a pointer to he event filter
.SH "SYNOPSIS"
.PP
\fB#include "SDL\&.h"
.sp
\fBSDL_EventFilter \fBSDL_GetEventFilter\fP\fR(\fBvoid\fR);
.SH "DESCRIPTION"
.PP
This function retrieces a pointer to the event filter that was previously set using \fI\fBSDL_SetEventFilter\fP\fR\&. An SDL_EventFilter function is defined as: 
.PP
.nf
\f(CWtypedef int (*SDL_EventFilter)(const SDL_Event *event);\fR
.fi
.PP
.SH "RETURN VALUE"
.PP
Returns a pointer to the event filter or \fBNULL\fP if no filter has been set\&.
.SH "SEE ALSO"
.PP
\fI\fBSDL_Event\fR\fR, \fI\fBSDL_SetEventFilter\fP\fR
.\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:59