- Fixed: The mouse wheel generated no events in GUI mode if you weren't

fullscreen. (e.g. You could no longer scroll the console with the mouse
  buffer.)
- Fixed: Wheeling down was seen as wheeling up with the Win32 mouse.


SVN r1618 (trunk)

docs/rh-log.txt

@@ -1,4 +1,8 @@
 May 27, 2009
+- Fixed: The mouse wheel generated no events in GUI mode if you weren't
+  fullscreen. (e.g. You could no longer scroll the console with the mouse
+  buffer.)
+- Fixed: Wheeling down was seen as wheeling up with the Win32 mouse.
 - EV_GUI_Key(Down|Up|Repeat) events no longer provide shifted key codes
   in data2. This was just unnecessary overhead that wasn't really needed
   anywhere.

src/win32/i_input.cpp

@@ -143,6 +143,7 @@ extern menu_t JoystickMenu;
 EXTERN_CVAR (String, language)
 EXTERN_CVAR (Bool, lookstrafe)
 
+static int WheelDelta;
 
 extern BOOL paused;
 static bool noidle = false;
@@ -415,6 +416,32 @@ bool GUIWndProcHook(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, LRESU
 		}
 		D_PostEvent(&ev);
 		return true;
+
+	// Note: If the mouse is grabbed, it sends the mouse wheel events itself.
+	case WM_MOUSEWHEEL:
+		if (wParam & MK_SHIFT)				ev.data3 |= GKM_SHIFT;
+		if (wParam & MK_CONTROL)			ev.data3 |= GKM_CTRL;
+		if (GetKeyState(VK_MENU) & 0x8000)	ev.data3 |= GKM_ALT;
+		WheelDelta += (SHORT)HIWORD(wParam);
+		if (WheelDelta < 0)
+		{
+			ev.subtype = EV_GUI_WheelDown;
+			while (WheelDelta <= -WHEEL_DELTA)
+			{
+				D_PostEvent(&ev);
+				WheelDelta += WHEEL_DELTA;
+			}
+		}
+		else
+		{
+			ev.subtype = EV_GUI_WheelUp;
+			while (WheelDelta >= WHEEL_DELTA)
+			{
+				D_PostEvent(&ev);
+				WheelDelta -= WHEEL_DELTA;
+			}
+		}
+		return true;
 	}
 	return false;
 }

src/win32/i_input.h

@@ -80,6 +80,7 @@ protected:
 	void PostButtonEvent(int button, bool down);
 	void ClearButtonState();
 
+	int WheelMove;
 	int LastX, LastY;	// for m_filter
 	WORD ButtonState;	// bit mask of current button states (1=down, 0=up)
 };

src/win32/i_mouse.cpp

@@ -266,6 +266,7 @@ FMouse::FMouse()
 {
 	LastX = LastY = 0;
 	ButtonState = 0;
+	WheelMove = 0;
 }
 
 //==========================================================================
@@ -316,33 +317,9 @@ void FMouse::WheelMoved(int wheelmove)
 	event_t ev = { 0 };
 	int dir;
 
-	if (GUICapture)
+	WheelMove += wheelmove;
-	{
+
-		ev.type = EV_GUI_Event;
+	if (WheelMove < 0)
-		if (wheelmove < 0)
-		{
-			dir = WHEEL_DELTA;
-			ev.subtype = EV_GUI_WheelDown;
-		}
-		else
-		{
-			dir = -WHEEL_DELTA;
-			ev.subtype = EV_GUI_WheelUp;
-		}
-		/* FIXME
-		ev.data3 = ((KeyState[VK_SHIFT]&128) ? GKM_SHIFT : 0) |
-				   ((KeyState[VK_CONTROL]&128) ? GKM_CTRL : 0) |
-				   ((KeyState[VK_MENU]&128) ? GKM_ALT : 0);
-		*/
-		while (abs(wheelmove) >= WHEEL_DELTA)
-		{
-			D_PostEvent(&ev);
-			wheelmove += dir;
-		}
-	}
-	else
-	{
-		if (wheelmove < 0)
 	{
 		dir = WHEEL_DELTA;
 		ev.data1 = KEY_MWHEELDOWN;
@@ -352,13 +329,30 @@ void FMouse::WheelMoved(int wheelmove)
 		dir = -WHEEL_DELTA;
 		ev.data1 = KEY_MWHEELUP;
 	}
-		while (abs(wheelmove) >= WHEEL_DELTA)
+
+	if (!GUICapture)
+	{
+		while (abs(WheelMove) >= WHEEL_DELTA)
 		{
 			ev.type = EV_KeyDown;
 			D_PostEvent(&ev);
 			ev.type = EV_KeyUp;
 			D_PostEvent(&ev);
-			wheelmove += dir;
+			WheelMove += dir;
+		}
+	}
+	else
+	{
+		ev.type = EV_GUI_Event;
+		ev.subtype = (WheelMove < 0) ? EV_GUI_WheelDown : EV_GUI_WheelUp;
+		if (GetKeyState(VK_SHIFT) & 0x8000)		ev.data3 |= GKM_SHIFT;
+		if (GetKeyState(VK_CONTROL) & 0x8000)	ev.data3 |= GKM_CTRL;
+		if (GetKeyState(VK_MENU) & 0x8000)		ev.data3 |= GKM_ALT;
+		ev.data1 = 0;
+		while (abs(WheelMove) >= WHEEL_DELTA)
+		{
+			D_PostEvent(&ev);
+			WheelMove += dir;
 		}
 	}
 }
@@ -420,6 +414,8 @@ void FMouse::ClearButtonState()
 		}
 		ButtonState = 0;
 	}
+	// Reset mouse wheel accumulation to 0.
+	WheelMove = 0;
 }
 
 //==========================================================================
@@ -967,7 +963,7 @@ bool FWin32Mouse::WndProcHook(HWND hWnd, UINT message, WPARAM wParam, LPARAM lPa
 	}
 	else if (message == WM_MOUSEWHEEL)
 	{
-		WheelMoved(HIWORD(wParam));
+		WheelMoved((SHORT)HIWORD(wParam));
 		return true;
 	}
 	else if (message >= WM_LBUTTONDOWN && message <= WM_MBUTTONUP)