Sets the current brush for the DC.
If the argument is wxNullBrush, the current brush is selected out of the device
-context, and the original brush restored, allowing the current brush to
+context (leaving wxDC without any valid brush), allowing the current brush to
be destroyed safely.
See also \helpref{wxBrush}{wxbrush}.
Sets the current pen for the DC.
If the argument is wxNullPen, the current pen is selected out of the device
-context, and the original pen restored.
+context (leaving wxDC without any valid pen), allowing the current brush to
+be destroyed safely.
See also \helpref{wxMemoryDC}{wxmemorydc} for the interpretation of colours
when drawing into a monochrome bitmap.