VisualOwnable and VisualOwnableMX derive from VisualBase and add functionality that requires OpenGL function calls, but without adding any windowing system specific functionality.

This class is a mathplot-internal class and there is typically no access of its methods in mathplot client code.

However, if you want to incorporate mathplot graphics into another windowing system, this class provides the drawing functionality. For examples, see mplot/qt/viswidget.h and mplot/qt/viswidget_mx.h for Qt and mplot/wx/viswx.h for wxWidgets.