made IsMaximized() return true if frame had been maximized before being shown

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@34828 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/toplevel.cpp

@@ -676,7 +676,7 @@ bool wxTopLevelWindowMSW::IsMaximized() const
 #ifdef __WXWINCE__
     return false;
 #else
-    return ::IsZoomed(GetHwnd()) != 0;
+    return m_maximizeOnShow || ::IsZoomed(GetHwnd()) != 0;
 #endif
 }