Mercurial > sdl-ios-xcode
view src/video/nanox/SDL_nxmouse.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 | 604d73db6802 |
line wrap: on
line source
/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga Copyright (C) 2001 Hsieh-Fu Tsai 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 Hsieh-Fu Tsai clare@setabox.com */ #include <stdlib.h> #include "SDL_error.h" #include "SDL_events_c.h" #include "SDL_nxmouse_c.h" // The implementation dependent data for the window manager cursor struct WMcursor { int unused ; } ; WMcursor * NX_CreateWMCursor (_THIS, Uint8 * data, Uint8 * mask, int w, int h, int hot_x, int hot_y) { WMcursor * cursor ; Dprintf ("enter NX_CreateWMCursor\n") ; cursor = (WMcursor *) malloc (sizeof (WMcursor)) ; if (cursor == NULL) { SDL_OutOfMemory () ; return NULL ; } Dprintf ("leave NX_CreateWMCursor\n") ; return cursor ; } void NX_FreeWMCursor (_THIS, WMcursor * cursor) { Dprintf ("NX_FreeWMCursor\n") ; free (cursor) ; return ; } void NX_WarpWMCursor(_THIS, Uint16 x, Uint16 y) { GR_WINDOW_INFO info ; Dprintf ("enter NX_WarpWMCursor\n") ; SDL_Lock_EventThread () ; GrGetWindowInfo (SDL_Window, & info) ; GrMoveCursor (info.x + x, info.y + y) ; SDL_Unlock_EventThread () ; Dprintf ("leave NX_WarpWMCursor\n") ; } int NX_ShowWMCursor (_THIS, WMcursor * cursor) { Dprintf ("NX_ShowWMCursor\n") ; return 1 ; }