Mercurial > sdl-ios-xcode
view src/video/x11/SDL_x11dga.c @ 1303:52b5afd7ecee
Date: Tue, 05 Jul 2005 21:43:26 +1000
From: Sean Childs
Subject: [SDL] Compiling SDL 1.2.8 with the free Borland compiler
When compiling SDL 1.2.8 with the free Borland compiler, I received this
error (there is a similar error that occurs in
src\video\windx5\sdl_dx5events.c):
Error E2342 ..\..\src\video\windib\sdl_dibevents.c 189: Type mismatch in
parameter 'lpPrevWndFunc' (wanted 'int (__stdcall *)()', got 'long
(__stdcall *)(void *,unsigned int,unsigned int,long)') in function
DIB_HandleMessage
I checked the MSDN library at:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/
windowsuserinterface/windowing/windowprocedures/windowprocedurereference/wind
owprocedurefunctions/callwindowproc.asp
and it had this to say:
If STRICT is not defined, the lpPrevWndFunc parameter has the data type
FARPROC. The FARPROC type is declared as follows:
int (FAR WINAPI * FARPROC) ()
In C, the FARPROC declaration indicates a callback function that has an
unspecified parameter list. In C++, however, the empty parameter list in
the declaration indicates that a function has no parameters. This subtle
distinction can break careless code. Following is one way to handle this
situation:
#ifdef STRICT
WNDPROC MyWindowProcedure
#else
FARPROC MyWindowProcedure
#endif
...
lResult = CallWindowProc(MyWindowProcedure, ...)
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 31 Jan 2006 15:30:42 +0000 |
parents | b8d311d90021 |
children | c9b51268668f |
line wrap: on
line source
/* 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 */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif /* This is currently only used to enable DGA mouse. The new fullscreen code makes it very difficult to handle DGA dynamically. There will be a completely separate DGA driver that is fullscreen-only. */ #include <stdlib.h> /* For getenv() */ #include "SDL_video.h" #include "SDL_cursor_c.h" #include "SDL_x11dga_c.h" /* Global for the error handler */ int dga_event, dga_error = -1; void X11_EnableDGAMouse(_THIS) { #ifdef XFREE86_DGAMOUSE int dga_major, dga_minor; int use_dgamouse; const char *env_use_dgamouse; /* Check configuration to see if we should use DGA mouse */ #ifdef DEFAULT_DGAMOUSE use_dgamouse = 1; #else use_dgamouse = 0; #endif env_use_dgamouse = getenv("SDL_VIDEO_X11_DGAMOUSE"); if ( env_use_dgamouse ) { use_dgamouse = atoi(env_use_dgamouse); } /* Check for buggy X servers */ if ( use_dgamouse && BUGGY_XFREE86(==, 4000) ) { use_dgamouse = 0; } /* Only use DGA mouse if the cursor is not showing (in relative mode) */ if ( use_dgamouse && local_X11 && !(using_dga & DGA_MOUSE) && SDL_NAME(XF86DGAQueryExtension)(SDL_Display, &dga_event, &dga_error) && SDL_NAME(XF86DGAQueryVersion)(SDL_Display, &dga_major, &dga_minor) ) { if ( SDL_NAME(XF86DGADirectVideo)(SDL_Display, SDL_Screen, XF86DGADirectMouse) ) { using_dga |= DGA_MOUSE; } } #endif /* XFREE86_DGAMOUSE */ } /* Argh. Glide resets DGA mouse mode when it makes the context current! */ void X11_CheckDGAMouse(_THIS) { #ifdef XFREE86_DGAMOUSE int flags; if ( using_dga & DGA_MOUSE ) { SDL_NAME(XF86DGAQueryDirectVideo)(SDL_Display, SDL_Screen, &flags); if ( ! (flags & XF86DGADirectMouse) ) { SDL_NAME(XF86DGADirectVideo)(SDL_Display,SDL_Screen,XF86DGADirectMouse); } } #endif } void X11_DisableDGAMouse(_THIS) { #ifdef XFREE86_DGAMOUSE if ( using_dga & DGA_MOUSE ) { SDL_NAME(XF86DGADirectVideo)(SDL_Display, SDL_Screen, 0); using_dga &= ~DGA_MOUSE; } #endif /* XFREE86_DGAMOUSE */ }