Use wxDynamicCast() instead of IsKindOf() checks.

wxDynamicCast() is less verbose (due to the absence of "CLASSINFO") and more
compatible with the standard dynamic_cast<>, so prefer to use it when possible.

See #14356.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71624 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/sashwin.cpp

@@ -115,8 +115,8 @@ void wxSashWindow::OnMouseEvent(wxMouseEvent& event)
             // the area to draw on.
             wxWindow* parent = this;
 
-            while (parent && !parent->IsKindOf(CLASSINFO(wxDialog)) &&
-                             !parent->IsKindOf(CLASSINFO(wxFrame)))
+            while (parent && !wxDynamicCast(parent, wxDialog) &&
+                             !wxDynamicCast(parent, wxFrame))
               parent = parent->GetParent();
 
             wxScreenDC::StartDrawingOnTop(parent);