view docs/man3/SDL_GetVideoSurface.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_GetVideoSurface" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_GetVideoSurface \- returns a pointer to the current display surface
.SH "SYNOPSIS"
.PP
\fB#include "SDL\&.h"
.sp
\fBSDL_Surface *\fBSDL_GetVideoSurface\fP\fR(\fBvoid\fR);
.SH "DESCRIPTION"
.PP
This function returns a pointer to the current display surface\&. If SDL is doing format conversion on the display surface, this function returns the publicly visible surface, not the real video surface\&.
.SH "SEE ALSO"
.PP
\fI\fBSDL_Surface\fR\fR
.\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01