Mercurial > sdl-ios-xcode
view src/video/x11/SDL_x11dyn.c @ 1525:23a347cfbed8
Fixed bug #38
I'm using SDL 1.2.9 with Visual C++ 7.0 on Windows 2000.
Here's the setup: my game starts in a window, with
SDL_WM_GrabInput(SDL_GRAB_ON) to constrain the cursor to the game window. The
mouse cursor is outside of the window when the game launches, and when the
window appears the cursor is grabbed and placed at the top left corner of the
inside of the game window. At this point, if I click the mouse without moving
it, the SDL_MOUSEBUTTONDOWN event's mouse coordinates are (65535,65535).
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 14 Mar 2006 06:00:30 +0000 |
parents | d910939febfa |
children | 3ba88cb7eb1b |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #if 0 #define DEBUG_DYNAMIC_X11 1 #endif #define __SDL_NO_REDEFINE_X11_HEADER_SYMS 1 #include "SDL_x11dyn.h" #ifdef DEBUG_DYNAMIC_X11 #include <stdio.h> #endif #ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC #include <dlfcn.h> #include "SDL_name.h" #include "SDL_loadso.h" static const char *x11_library = SDL_VIDEO_DRIVER_X11_DYNAMIC; static void *x11_handle = NULL; static const char *x11ext_library = SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT; static void *x11ext_handle = NULL; static void *X11_GetSym(int required, const char *fnname, int *rc) { void *fn = NULL; if (*rc) { /* haven't already failed on a previous lookup? */ fn = SDL_LoadFunction(x11_handle, fnname); #if DEBUG_DYNAMIC_X11 if (fn != NULL) printf("X11: Found '%s' in libX11 (%p)\n", fnname, fn); #endif if (fn == NULL) { /* not found? Check libX11ext ... */ fn = SDL_LoadFunction(x11ext_handle, fnname); #if DEBUG_DYNAMIC_X11 if (fn != NULL) printf("X11: Found '%s' in libXext (%p)\n", fnname, fn); else printf("X11: Symbol '%s' NOT FOUND!%s\n", fnname, required ? "" : " (...but not required!)"); #endif } *rc = ((fn != NULL) || (!required)); } return fn; } #endif /* SDL_VIDEO_DRIVER_X11_DYNAMIC */ /* Define all the function pointers... */ #define SDL_X11_SYM(req,ret,fn,params) ret (*p##fn) params = NULL; #include "SDL_x11sym.h" #undef SDL_X11_SYM static int x11_load_refcount = 0; void SDL_X11_UnloadSymbols(void) { /* Don't actually unload if more than one module is using the libs... */ if (x11_load_refcount > 0) { if (--x11_load_refcount == 0) { /* set all the function pointers to NULL. */ #define SDL_X11_SYM(req,ret,fn,params) p##fn = NULL; #include "SDL_x11sym.h" #undef SDL_X11_SYM #ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC if (x11_handle != NULL) { SDL_UnloadObject(x11_handle); x11_handle = NULL; } if (x11ext_handle != NULL) { SDL_UnloadObject(x11ext_handle); x11ext_handle = NULL; } #endif } } } /* returns non-zero if all needed symbols were loaded. */ int SDL_X11_LoadSymbols(void) { int rc = 1; /* deal with multiple modules (dga, x11, etc) needing these symbols... */ if (x11_load_refcount++ == 0) { #ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC x11_handle = SDL_LoadObject(x11_library); x11ext_handle = SDL_LoadObject(x11ext_library); rc = ((x11_handle != NULL) && (x11ext_handle != NULL)); #define SDL_X11_SYM(req,r,fn,arg) p##fn = X11_GetSym(req,#fn, &rc); #include "SDL_x11sym.h" #undef SDL_X11_SYM if (!rc) SDL_X11_UnloadSymbols(); /* in case one of these loaded... */ #else #define SDL_X11_SYM(req,r,fn,arg) p##fn = fn; #include "SDL_x11sym.h" #undef SDL_X11_SYM #endif } return rc; } /* end of SDL_x11dyn.c ... */