Aligning in wxpython

Question

I am trying to align checkboxes and matplotlib canvas in wx frame.

• I need those check boxes to be aligned in left side and canvas on right side
• below code not aligning them properly

can anybody suggest changes need to be done in the code ?

• If I want to add one more canvas in the same frame how can i add it?

  import wx
  import matplotlib.pyplot as plt
  from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas
  
  class canvasFrame(wx.Frame):
      def __init__(self,parent,id):
          wx.Frame.__init__(self,parent,id,"MyCanvas",size =(1200,400))
  
          self.fig = plt.Figure(figsize=(15,5))
          self.ax1 = self.fig.add_subplot(1,1,1)
          self.canvas = FigureCanvas(self, -1, self.fig)
  
          b1 = wx.CheckBox(self,-1,"Apples",(10,20),(160,-1))
          b2 = wx.CheckBox(self,-1,"Mango",(10,40),(160,-1))
  
          b1sizer = wx.BoxSizer(wx.VERTICAL)
          b2sizer = wx.BoxSizer(wx.VERTICAL)
          canvSizer = wx.BoxSizer(wx.HORIZONTAL)
  
          b1sizer.Add(b1,0,wx.ALL,5)
          b2sizer.Add(b2,0,wx.ALL,5)
          canvSizer.Add(self.canvas,wx.TOP | wx.EXPAND,5)
  
  if __name__ == "__main__":
     app = wx.App()
     frame = canvasFrame(parent=None,id = -1)
     frame.Show()
     app.MainLoop()
  

Answer 1

you are missing alot of parts of how sizers work ... I would really recommend revisiting the documentation and googling for tutorials

class canvasFrame(wx.Frame):
    def __init__(self,parent,id):
        wx.Frame.__init__(self,parent,id,"MyCanvas",size =(1200,400))

        self.fig = plt.Figure(figsize=(15,5))
        self.ax1 = self.fig.add_subplot(1,1,1)
        self.canvas = FigureCanvas(self, -1, self.fig)

        b1 = wx.CheckBox(self,-1,"Apples",(10,20),(160,-1))
        b2 = wx.CheckBox(self,-1,"Mango",(10,40),(160,-1))
        # first create your sizer for your checkboxes
        checkbox_sizer = wx.BoxSizer(wx.VERTICAL)
        checkbox_sizer.AddMany([b1,b2]) # add both buttons to the sizer
        #next create the main sizer
        main_sizer = wx.BoxSizer(wx.HORIZONTAL)
        #add the checkbox sizer to the main_sizer
        main_sizer.Add(checkbox_sizer)
        # add the canvas to the main sizer
        main_sizer.Add(self.canvas)
        #Set the sizer as the sizer for the frame
        self.SetSizer(main_sizer)
        #call layout for the sizers to layout their elements
        self.Layout()
        #call fit to make the frame fit its contents
        self.Fit()