Changeset 965

Timestamp:

05/02/09 06:15:09 (4 years ago)

Author:

lowjoel

Message:

Render the arrow for menu items with submenus.

File:

• branches/eraser6/Util/UxThemeAPI.cs (modified) (2 diffs)

branches/eraser6/Util/UxThemeAPI.cs

@@ -248 +248 @@
         protected override void OnRenderArrow(ToolStripArrowRenderEventArgs e)
         {
-            base.OnRenderArrow(e);
+            int itemState = (int)(e.Item.Enabled ? POPUPSUBMENUSTATES.MSM_NORMAL :
+                POPUPSUBMENUSTATES.MSM_DISABLED);
+
+            //Strangely, UxTheme won't draw any arrow once the starting coordinate
+            //is beyond 5px. So draw the arrow on a backing image then blit
+            //to the actual one.
+            using (Bitmap backBmp = new Bitmap(e.ArrowRectangle.Width, e.ArrowRectangle.Height))
+            {
+                using (Graphics backGfx = Graphics.FromImage(backBmp))
+                {
+                    IntPtr hDC = backGfx.GetHdc();
+
+                    Rectangle backRect = new Rectangle(new Point(0, 0), backBmp.Size);
+                    DrawThemeBackground(hTheme, hDC, (int)MENUPARTS.MENU_POPUPSUBMENU, itemState,
+                        ref backRect, ref backRect);
+                    backGfx.ReleaseHdc();
+                }
+
+                e.Graphics.DrawImageUnscaled(backBmp, e.ArrowRectangle);
+            }
         }
 
@@ -336 +355 @@
             MPI_DISABLEDHOT = 4,
         }
+
+        private enum POPUPSUBMENUSTATES
+        {
+            MSM_NORMAL = 1,
+            MSM_DISABLED = 2,
+        }
         #endregion
     }