Make sure setVisible for Windows cursor also works while mousebutton is pressed.

As reported in http://irrlicht.sourceforge.net/phpBB2/viewtopic.php?t=25880&highlight=


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2400 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CIrrDeviceWin32.cpp

@@ -177,16 +177,6 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 	case WM_ERASEBKGND:
 		return 0;
 
-	case WM_SETCURSOR:
-	{
-		SEnvMapper* envm = getEnvMapperFromHWnd(hWnd);
-		if (envm && !envm->irrDev->getWin32CursorControl()->isVisible())
-		{
-			SetCursor(NULL);
-			return 0;
-		}
-	} break;
-
 	case WM_KEYDOWN:
 	case WM_KEYUP:
 		{

source/Irrlicht/CIrrDeviceWin32.h

@@ -106,13 +106,34 @@ namespace irr
 			//! Changes the visible state of the mouse cursor.
 			virtual void setVisible(bool visible)
 			{
-				if(visible != IsVisible)
+				CURSORINFO info;
+				info.cbSize = sizeof(CURSORINFO);
+
+				if ( visible )
 				{
-					IsVisible = visible;
-					updateInternalCursorPosition();
-					setPosition(CursorPos.X, CursorPos.Y);
+					while ( GetCursorInfo(&info) )
+					{
+						if ( info.flags == CURSOR_SHOWING )
+						{
+							IsVisible = visible;
+							break;
+						}
+						ShowCursor(true);   // this only increases an internal display counter in windows, so it might have to be called some more
+					}
 				}
-			}
+				else
+				{
+					while ( GetCursorInfo(&info) )
+					{
+						if ( info.flags == 0 )  // cursor hidden
+						{
+							IsVisible = visible;
+							break;
+						}
+						ShowCursor(false);   // this only decreases an internal display counter in windows, so it might have to be called some more
+					}
+				}
+			} 
 
 			//! Returns if the cursor is currently visible.
 			virtual bool isVisible() const