Use the DrawFocusRect function to draw the focus rect, instead of a

dlls/comctl32/monthcal.c

@@ -337,7 +337,6 @@ static void MONTHCAL_DrawDay(MONTHCAL_INFO *infoPtr, HDC hdc, int day, int month
   RECT r;
   static int haveBoldFont, haveSelectedDay = FALSE;
   HBRUSH hbr;
-  HPEN hNewPen, hOldPen = 0;
   COLORREF oldCol = 0;
   COLORREF oldBk = 0;
 
@@ -394,12 +393,8 @@ static void MONTHCAL_DrawDay(MONTHCAL_INFO *infoPtr, HDC hdc, int day, int month
   DrawTextA(hdc, buf, -1, &r, DT_CENTER | DT_VCENTER | DT_SINGLELINE );
 
   /* draw a rectangle around the currently selected days text */
-  if((day==infoPtr->curSelDay) && (month==infoPtr->currentMonth)) {
-    hNewPen = CreatePen(PS_ALTERNATE, 0, GetSysColor(COLOR_WINDOWTEXT) );
-    hbr = GetSysColorBrush(COLOR_WINDOWTEXT);
-    FrameRect(hdc, &r, hbr);
-    SelectObject(hdc, hOldPen);
-  }
+  if((day==infoPtr->curSelDay) && (month==infoPtr->currentMonth))
+    DrawFocusRect(hdc, &r);
 }