A wx.WindowDC must be constructed if an application wishes to paint on the whole area of a window (client and decorations).
This should normally be constructed as a temporary stack object; don’t store a wx.WindowDC object.
To draw on a window from inside an EVT_PAINT() handler, construct a wx.PaintDC object instead.
To draw on the client area of a window from outside an EVT_PAINT() handler, construct a wx.ClientDC object.
A wx.WindowDC object is initialized to use the same font and colours as the window it is associated with.
See also
wx.DC, wx.MemoryDC, wx.PaintDC, wx.ClientDC, wx.ScreenDC
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