[gtk/gtk-3-24: 1/2] GdkW32: remove klassTEMPSHADOW

[Chun-wei Fan <fanchunwei src gnome org>]

commit 0cb78a9808cd90e7b29b5a24bd591456f35b3193
Author: Luca Bacci <luca bacci982 gmail com>
Date:   Tue Oct 27 18:12:42 2020 +0100

    GdkW32: remove klassTEMPSHADOW
    
    Fixes issue #2019
    
    See !2749

 gdk/win32/gdkwindow-win32.c | 33 +++++++--------------------------
 1 file changed, 7 insertions(+), 26 deletions(-)
---
diff --git a/gdk/win32/gdkwindow-win32.c b/gdk/win32/gdkwindow-win32.c
index 27e5355cf7..7fe3e98af9 100644
--- a/gdk/win32/gdkwindow-win32.c
+++ b/gdk/win32/gdkwindow-win32.c
@@ -555,7 +555,6 @@ RegisterGdkClass (GdkWindowType wtype, GdkWindowTypeHint wtype_hint)
   static ATOM klassTOPLEVEL   = 0;
   static ATOM klassCHILD      = 0;
   static ATOM klassTEMP       = 0;
-  static ATOM klassTEMPSHADOW = 0;
   static HICON hAppIcon = NULL;
   static HICON hAppIconSm = NULL;
   static WNDCLASSEXW wcl;
@@ -652,34 +651,16 @@ RegisterGdkClass (GdkWindowType wtype, GdkWindowTypeHint wtype_hint)
       break;
 
     case GDK_WINDOW_TEMP:
-      if ((wtype_hint == GDK_WINDOW_TYPE_HINT_MENU) ||
-          (wtype_hint == GDK_WINDOW_TYPE_HINT_DROPDOWN_MENU) ||
-          (wtype_hint == GDK_WINDOW_TYPE_HINT_POPUP_MENU))
+      if (klassTEMP == 0)
         {
-          if (klassTEMPSHADOW == 0)
-            {
-              wcl.lpszClassName = L"gdkWindowTempShadow";
-              wcl.style |= CS_SAVEBITS;
-              wcl.style |= 0x00020000; /* CS_DROPSHADOW */
-
-              ONCE_PER_CLASS ();
-              klassTEMPSHADOW = RegisterClassExW (&wcl);
-            }
-
-          klass = klassTEMPSHADOW;
+          wcl.lpszClassName = L"gdkWindowTemp";
+          wcl.style |= CS_SAVEBITS;
+          ONCE_PER_CLASS ();
+          klassTEMP = RegisterClassExW (&wcl);
         }
-       else
-        {
-          if (klassTEMP == 0)
-            {
-              wcl.lpszClassName = L"gdkWindowTemp";
-              wcl.style |= CS_SAVEBITS;
-              ONCE_PER_CLASS ();
-              klassTEMP = RegisterClassExW (&wcl);
-            }
 
-          klass = klassTEMP;
-        }
+      klass = klassTEMP;
+
       break;
 
     default: