richedit: Show arrow cursor over scrollbar.

dlls/riched20/editor.c

@@ -2103,10 +2103,29 @@ static BOOL ME_SetCursor(ME_TextEditor *editor)
   POINT pt;
   BOOL isExact;
   int offset;
+  SCROLLBARINFO sbi;
   DWORD messagePos = GetMessagePos();
   pt.x = (short)LOWORD(messagePos);
   pt.y = (short)HIWORD(messagePos);
+
+  sbi.cbSize = sizeof(sbi);
+  GetScrollBarInfo(editor->hWnd, OBJID_HSCROLL, &sbi);
+  if (!(sbi.rgstate[0] & (STATE_SYSTEM_INVISIBLE|STATE_SYSTEM_OFFSCREEN)) &&
+      PtInRect(&sbi.rcScrollBar, pt))
+  {
+      SetCursor(LoadCursorW(NULL, (WCHAR*)IDC_ARROW));
+      return TRUE;
+  }
+  sbi.cbSize = sizeof(sbi);
+  GetScrollBarInfo(editor->hWnd, OBJID_VSCROLL, &sbi);
+  if (!(sbi.rgstate[0] & (STATE_SYSTEM_INVISIBLE|STATE_SYSTEM_OFFSCREEN)) &&
+      PtInRect(&sbi.rcScrollBar, pt))
+  {
+      SetCursor(LoadCursorW(NULL, (WCHAR*)IDC_ARROW));
+      return TRUE;
+  }
   ScreenToClient(editor->hWnd, &pt);
+
   if ((GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_SELECTIONBAR) &&
       (pt.x < editor->selofs ||
        (editor->nSelectionType == stLine && GetCapture() == editor->hWnd)))