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, ...)

--- a/src/video/windx5/SDL_dx5events.c	Tue Jan 31 14:59:43 2006 +0000
+++ b/src/video/windx5/SDL_dx5events.c	Tue Jan 31 15:30:42 2006 +0000
@@ -66,7 +66,12 @@
 
 /* DJM: If the user setup the window for us, we want to save his window proc,
    and give him a chance to handle some messages. */
-static WNDPROC userWindowProc = NULL;
+#ifdef STRICT
+#define WNDPROCTYPE	WNDPROC
+#else
+#define WNDPROCTYPE	FARPROC
+#endif
+static WNDPROCTYPE userWindowProc = NULL;
 
 static HWND GetTopLevelParent(HWND hWnd)
 {
@@ -871,7 +876,7 @@
 		/* DJM: we want all event's for the user specified
 			window to be handled by SDL.
 		 */
-		userWindowProc = (WNDPROC)GetWindowLong(SDL_Window, GWL_WNDPROC);
+		userWindowProc = (WNDPROCTYPE)GetWindowLong(SDL_Window, GWL_WNDPROC);
 		SetWindowLong(SDL_Window, GWL_WNDPROC, (LONG)WinMessage);
 	} else {
 		SDL_Window = CreateWindow(SDL_Appname, SDL_Appname,