create your UI with no stay_on_top style
use the following to make it stay on top - or cancel stay on top as you need
def set_style( self, event = None ):
self.old_style = self.GetWindowStyle()
def stay_on_top( self, event=None ):
self.SetWindowStyle(self.old_style | wx.STAY_ON_TOP)
def cancel_on_top( self, event = None ):
self.SetWindowStyle(self.old_style)
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