Fixed bug #464

Added X1/X2 button constants

--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%402667

WhatsNew

@@ -3,6 +3,9 @@ This is a list of API changes in SDL's version history.
 
 Version 1.0:
 
+1.2.13:
+	Added SDL_BUTTON_X1 and SDL_BUTTON_X2 constants.
+
 1.2.12:
 	Added SDL_VIDEO_ALLOW_SCREENSAVER to override SDL's disabling
 	of the screensaver on Mac OS X and X11.

include/SDL_mouse.h

@@ -122,9 +122,13 @@ extern DECLSPEC int SDLCALL SDL_ShowCursor(int toggle);
 #define SDL_BUTTON_RIGHT	3
 #define SDL_BUTTON_WHEELUP	4
 #define SDL_BUTTON_WHEELDOWN	5
+#define SDL_BUTTON_X1		6
+#define SDL_BUTTON_X2		7
 #define SDL_BUTTON_LMASK	SDL_BUTTON(SDL_BUTTON_LEFT)
 #define SDL_BUTTON_MMASK	SDL_BUTTON(SDL_BUTTON_MIDDLE)
 #define SDL_BUTTON_RMASK	SDL_BUTTON(SDL_BUTTON_RIGHT)
+#define SDL_BUTTON_X1MASK	SDL_BUTTON(SDL_BUTTON_X1)
+#define SDL_BUTTON_X2MASK	SDL_BUTTON(SDL_BUTTON_X2)
 
 
 /* Ends C function definitions when using C++ */

src/video/wincommon/SDL_sysevents.c

@@ -520,12 +520,12 @@ LRESULT CALLBACK WinMessage(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
 						break;
 					case WM_XBUTTONDOWN:
 						xbuttonval = GET_XBUTTON_WPARAM(wParam);
-						button = SDL_BUTTON_WHEELDOWN + xbuttonval;
+						button = SDL_BUTTON_X1 + xbuttonval - 1;
 						state = SDL_PRESSED;
 						break;
 					case WM_XBUTTONUP:
 						xbuttonval = GET_XBUTTON_WPARAM(wParam);
-						button = SDL_BUTTON_WHEELDOWN + xbuttonval;
+						button = SDL_BUTTON_X1 + xbuttonval - 1;
 						state = SDL_RELEASED;
 						break;
 					default: