Mercurial > sdl-ios-xcode
view src/video/dga/SDL_dgavideo.h @ 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 #ifndef _SDL_dgavideo_h #define _SDL_dgavideo_h #include <X11/Xlib.h> #include "SDL_mouse.h" #include "SDL_mutex.h" #include "SDL_sysvideo.h" /* Hidden "this" pointer for the video functions */ #define _THIS SDL_VideoDevice *this /* Define this if you need the DGA driver to be thread-safe */ #define LOCK_DGA_DISPLAY #ifdef LOCK_DGA_DISPLAY #define LOCK_DISPLAY() SDL_mutexP(event_lock) #define UNLOCK_DISPLAY() SDL_mutexV(event_lock) #else #define LOCK_DISPLAY() #define UNLOCK_DISPLAY() #endif /* This is the structure we use to keep track of video memory */ typedef struct vidmem_bucket { struct vidmem_bucket *prev; int used; int dirty; Uint8 *base; unsigned int size; struct vidmem_bucket *next; } vidmem_bucket; /* Private display data */ struct SDL_PrivateVideoData { Display *DGA_Display; Colormap DGA_colormap; int visualClass; #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */ int SDL_nummodes[NUM_MODELISTS]; SDL_Rect **SDL_modelist[NUM_MODELISTS]; /* Information for the video surface */ Uint8 *memory_base; int memory_pitch; SDL_mutex *hw_lock; int sync_needed; int was_flipped; /* Information for hardware surfaces */ vidmem_bucket surfaces; int surfaces_memtotal; int surfaces_memleft; /* Information for double-buffering */ int flip_page; int flip_yoffset[2]; Uint8 *flip_address[2]; /* Used to handle DGA events */ int event_base; #ifdef LOCK_DGA_DISPLAY SDL_mutex *event_lock; #endif }; /* Old variable names */ #define DGA_Display (this->hidden->DGA_Display) #define DGA_Screen DefaultScreen(DGA_Display) #define DGA_colormap (this->hidden->DGA_colormap) #define DGA_visualClass (this->hidden->visualClass) #define memory_base (this->hidden->memory_base) #define memory_pitch (this->hidden->memory_pitch) #define flip_page (this->hidden->flip_page) #define flip_yoffset (this->hidden->flip_yoffset) #define flip_address (this->hidden->flip_address) #define sync_needed (this->hidden->sync_needed) #define was_flipped (this->hidden->was_flipped) #define SDL_nummodes (this->hidden->SDL_nummodes) #define SDL_modelist (this->hidden->SDL_modelist) #define surfaces (this->hidden->surfaces) #define surfaces_memtotal (this->hidden->surfaces_memtotal) #define surfaces_memleft (this->hidden->surfaces_memleft) #define hw_lock (this->hidden->hw_lock) #define DGA_event_base (this->hidden->event_base) #define event_lock (this->hidden->event_lock) #endif /* _SDL_dgavideo_h */