Declare various WXH* handles compatibly with SDK.

It is no longer necessary to cast between e.g. HINSTANCE and
WXHINSTANCE, they are now declared as the same type (without including
Windows SDK header).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64138 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/private.h

@@ -973,12 +973,6 @@ inline long wxSetWindowExStyle(const wxWindowMSW *win, long style)
 // and returns either that window if it does or NULL otherwise
 extern WXDLLIMPEXP_CORE wxWindow* wxFindWinFromHandle(HWND hwnd);
 
-// without STRICT WXHWND is the same as HWND anyhow
-inline wxWindow* wxFindWinFromHandle(WXHWND hWnd)
-{
-    return wxFindWinFromHandle(static_cast<HWND>(hWnd));
-}
-
 // find the window for HWND which is part of some wxWindow, i.e. unlike
 // wxFindWinFromHandle() above it will also work for "sub controls" of a
 // wxWindow.