Don't #include the extra files unless we need them

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27125 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/grid.cpp

@@ -3906,6 +3906,10 @@ wxGrid::~wxGrid()
 // be removed as well as the #else cases below.
 #define _USE_VISATTR 0
 
+#if _USE_VISATTR
+#include "wx/listbox.h"
+#endif
+
 void wxGrid::Create()
 {
     m_created = FALSE;    // set to TRUE by CreateGrid

src/generic/listctrl.cpp

@@ -5250,7 +5250,9 @@ bool wxGenericListCtrl::SetFont( const wxFont &font )
 
 
 
+#if _USE_VISATTR
 #include "wx/listbox.h"
+#endif
 
 //static
 wxVisualAttributes

src/generic/treectlg.cpp

@@ -3446,7 +3446,9 @@ void wxGenericTreeCtrl::OnGetToolTip( wxTreeEvent &event )
 // be removed, as well as the #else case below.
 #define _USE_VISATTR 0
 
+#if _USE_VISATTR
 #include "wx/listbox.h"
+#endif
 
 //static
 wxVisualAttributes