Mercurial > sdl-ios-xcode
view src/video/wincommon/SDL_sysmouse.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 | 86d0d01290ea |
children | c9b51268668f |
line wrap: on
line source
/* SDL - Simple DirectMedia Layer Copyright (C) 1997, 1998, 1999 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 #include <stdlib.h> #include <windows.h> #include "SDL_error.h" #include "SDL_mouse.h" #include "SDL_sysmouse_c.h" #include "SDL_events_c.h" #include "SDL_cursor_c.h" #include "SDL_lowvideo.h" #ifdef _WIN32_WCE #define USE_STATIC_CURSOR #endif HCURSOR SDL_hcursor = NULL; /* Exported for SDL_eventloop.c */ /* The implementation dependent data for the window manager cursor */ /* For some reason when creating a windows cursor, the ands and xors memory is not copied, so we need to keep track of it and free it when we are done with the cursor. If we free the memory prematurely, the app crashes. :-} */ struct WMcursor { HCURSOR curs; #ifndef USE_STATIC_CURSOR Uint8 *ands; Uint8 *xors; #endif }; /* Convert bits to padded bytes */ #define PAD_BITS(bits) ((bits+7)/8) #ifdef CURSOR_DEBUG static void PrintBITMAP(FILE *out, char *bits, int w, int h) { int i; unsigned char ch; while ( h-- > 0 ) { for ( i=0; i<w; ++i ) { if ( (i%8) == 0 ) ch = *bits++; if ( ch&0x80 ) fprintf(out, "X"); else fprintf(out, " "); ch <<= 1; } fprintf(out, "\n"); } } #endif #ifndef USE_STATIC_CURSOR /* Local functions to convert the SDL cursor mask into Windows format */ static void memnot(Uint8 *dst, Uint8 *src, int len) { while ( len-- > 0 ) *dst++ = ~*src++; } static void memxor(Uint8 *dst, Uint8 *src1, Uint8 *src2, int len) { while ( len-- > 0 ) *dst++ = (*src1++)^(*src2++); } #endif /* !USE_STATIC_CURSOR */ void WIN_FreeWMCursor(_THIS, WMcursor *cursor) { #ifndef USE_STATIC_CURSOR if ( cursor->curs == GetCursor() ) SetCursor(NULL); if ( cursor->curs != NULL ) DestroyCursor(cursor->curs); if ( cursor->ands != NULL ) free(cursor->ands); if ( cursor->xors != NULL ) free(cursor->xors); #endif /* !USE_STATIC_CURSOR */ free(cursor); } WMcursor *WIN_CreateWMCursor(_THIS, Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) { #ifdef USE_STATIC_CURSOR WMcursor *cursor; /* Allocate the cursor */ cursor = (WMcursor *)malloc(sizeof(*cursor)); if ( cursor ) { cursor->curs = LoadCursor(NULL, IDC_ARROW); } return(cursor); #else WMcursor *cursor; int allowed_x; int allowed_y; int run, pad, i; Uint8 *aptr, *xptr; /* Check to make sure the cursor size is okay */ allowed_x = GetSystemMetrics(SM_CXCURSOR); allowed_y = GetSystemMetrics(SM_CYCURSOR); if ( (w > allowed_x) || (h > allowed_y) ) { SDL_SetError("Only cursors of dimension (%dx%d) are allowed", allowed_x, allowed_y); return(NULL); } /* Allocate the cursor */ cursor = (WMcursor *)malloc(sizeof(*cursor)); if ( cursor == NULL ) { SDL_SetError("Out of memory"); return(NULL); } cursor->curs = NULL; cursor->ands = NULL; cursor->xors = NULL; /* Pad out to the normal cursor size */ run = PAD_BITS(w); pad = PAD_BITS(allowed_x)-run; aptr = cursor->ands = (Uint8 *)malloc((run+pad)*allowed_y); xptr = cursor->xors = (Uint8 *)malloc((run+pad)*allowed_y); if ( (aptr == NULL) || (xptr == NULL) ) { WIN_FreeWMCursor(NULL, cursor); SDL_OutOfMemory(); return(NULL); } for ( i=0; i<h; ++i ) { memxor(xptr, data, mask, run); xptr += run; data += run; memnot(aptr, mask, run); mask += run; aptr += run; memset(xptr, 0, pad); xptr += pad; memset(aptr, ~0, pad); aptr += pad; } pad += run; for ( ; i<allowed_y; ++i ) { memset(xptr, 0, pad); xptr += pad; memset(aptr, ~0, pad); aptr += pad; } /* Create the cursor */ cursor->curs = CreateCursor( (HINSTANCE)GetWindowLong(SDL_Window, GWL_HINSTANCE), hot_x, hot_y, allowed_x, allowed_y, cursor->ands, cursor->xors); if ( cursor->curs == NULL ) { WIN_FreeWMCursor(NULL, cursor); SDL_SetError("Windows couldn't create the requested cursor"); return(NULL); } return(cursor); #endif /* USE_STATIC_CURSOR */ } int WIN_ShowWMCursor(_THIS, WMcursor *cursor) { POINT mouse_pos; /* The fullscreen cursor must be done in software with DirectInput */ if ( !this->screen || DDRAW_FULLSCREEN() ) { return(0); } /* Set the window cursor to our cursor, if applicable */ if ( cursor != NULL ) { SDL_hcursor = cursor->curs; } else { SDL_hcursor = NULL; } GetCursorPos(&mouse_pos); if ( PtInRect(&SDL_bounds, mouse_pos) ) { SetCursor(SDL_hcursor); } return(1); } void WIN_WarpWMCursor(_THIS, Uint16 x, Uint16 y) { if ( DDRAW_FULLSCREEN() ) { SDL_PrivateMouseMotion(0, 0, x, y); } else if ( mouse_relative) { /* RJR: March 28, 2000 leave physical cursor at center of screen if mouse hidden and grabbed */ SDL_PrivateMouseMotion(0, 0, x, y); } else { POINT pt; pt.x = x; pt.y = y; ClientToScreen(SDL_Window, &pt); SetCursorPos(pt.x, pt.y); } } /* Update the current mouse state and position */ void WIN_UpdateMouse(_THIS) { RECT rect; POINT pt; if ( ! DDRAW_FULLSCREEN() ) { GetClientRect(SDL_Window, &rect); GetCursorPos(&pt); MapWindowPoints(NULL, SDL_Window, &pt, 1); if (PtInRect(&rect, pt) && (WindowFromPoint(pt) == SDL_Window)){ SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS); SDL_PrivateMouseMotion(0,0, (Sint16)pt.x, (Sint16)pt.y); } else { SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS); } } } /* Check to see if we need to enter or leave mouse relative mode */ void WIN_CheckMouseMode(_THIS) { #ifndef _WIN32_WCE /* If the mouse is hidden and input is grabbed, we use relative mode */ if ( !(SDL_cursorstate & CURSOR_VISIBLE) && (this->input_grab != SDL_GRAB_OFF) ) { mouse_relative = 1; } else { mouse_relative = 0; } #else mouse_relative = 0; #endif }