don't check whether the window is shown and enabled in AcceptsFocus() itself

as it makes overriding it in derived classes problematic; provide a separate
non virtual CanAcceptFocus() method checking whether the window accepts focus
and if it can accept it now and use it instead of AcceptsFocus(); documented
AcceptsFocus() and AcceptsFocusFromKeyboard()


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45055 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/dfb/nonownedwnd.cpp

@@ -249,7 +249,7 @@ bool wxNonOwnedWindow::Show(bool show)
         {
             SetDfbFocus();
         }
-        else if ( AcceptsFocus() )
+        else if ( CanAcceptFocus() )
         {
             // FIXME: we should probably always call SetDfbFocus instead
             // and call SetFocus() from wxActivateEvent/DWET_GOTFOCUS