[wxPython] windows/panel-size??

Hi folks,

i have made a layout with 2 panels within a window(640x480):

    panelAll = wxPanel(self, -1,(-1,-1),(0,0))
    self.SetAutoLayout(true)
    self.SetBackgroundColour(wxNamedColour("DARK SLATE GREY"))

    #------------ Panel A -------------------------
    self.panelA = wxWindow(self, -1, wxDefaultPosition, wxDefaultSize, wxSIMPLE_BORDER)
    self.panelA.SetBackgroundColour(wxNamedColour("MEDIUM GOLDENROD"))

    lc = wxLayoutConstraints()
    lc.top.SameAs(self, wxTop, 10)
    lc.left.SameAs(self, wxLeft, 10)
    lc.bottom.SameAs(self, wxBottom, 10)
    lc.right.PercentOf(self, wxRight, 80)
    self.panelA.SetConstraints(lc)

    #------------ Panel B -------------------------
    self.panelB = wxWindow(self, -1, wxDefaultPosition, wxDefaultSize, wxSIMPLE_BORDER)
    self.panelB.SetBackgroundColour(wxNamedColour("MEDIUM GOLDENROD"))

    lc = wxLayoutConstraints()
    lc.top.SameAs(self, wxTop, 10)
    lc.left.RightOf(self.panelA, 10)
    lc.bottom.SameAs(self, wxBottom, 10)
    lc.right.SameAs(self, wxRight, 10)
    self.panelB.SetConstraints(lc)

Now I write MyCanvas into panelA and when I'm scaling my window - how can I resize the canvas within panelA

···

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