Fixed cell highlighting for disabled grid lines.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7350 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/grid.cpp

@@ -5310,6 +5310,14 @@ void wxGrid::SetCurrentCell( const wxGridCellCoords& coords )
         // Clear the old current cell highlight
         wxRect r = BlockToDeviceRect(m_currentCellCoords, m_currentCellCoords);
 
+	if ( !m_gridLinesEnabled )
+	{
+	    r.x--;
+	    r.y--;
+	    r.width++;
+	    r.height++;
+	}
+
         // Otherwise refresh redraws the highlight!
         m_currentCellCoords = coords;