Allow a wxPanel dervied object to accept focus

I'm using matplotlib to generate charts and displaying these in a WxPython based frontend using FigureCanvasWxAgg object (from matplotlib) which is derived from WxPane开发者_如何学Cl.

I want to add functionality to each chart to allow the arrow keys to control the position of an overlay if that chart is selected. In order to do this I need the chart to accept focus so I can bind to each charts wx.EVT_KEY_DOWN.

At the moment using a timer to display what has focus once every second (using wx.Window.FindFocus()) shows that when the left mouse button is held down whilst hovering over one of the charts, > has focus (which is correct) but as soon as the button is released, focus returns to "None."

Any suggestions on how to make the wxPanel derived FigureCanvasWxAgg object keep focus?

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wx.Panel doesn't really accept focus. It just passes the focus on to a widget that can. Only when it doesn't have a child can it accept focus. You may need to call SetFocus() on it though. This article tries to explain it: http://www.blog.pythonlibrary.org/2009/08/27/wxpython-learning-to-focus/