Documentation says when issue the following command on a vector layer (polygon), the vertex marker will be displayed in editing mode:
But it is not displaying the vertex markers.
I found that there is a static drawVertexMarker method on QgsVectorLayer class, but do I have to manually call it to draw a marker on each vertex? Also, if I am moving vertex in editing mode, do I have to constantly re-draw all vertices?
Additionally, there is the editBuffer() property that returns the QgsVectorLayerEditBuffer reference, is it possible to display that buffer layer in editing mode for visual aid?