Multiprocessing in wx Frame

[ian]

I make some changes and test it. It looks like multiprocessing not able to run inside wx Frame. My purpose is after clicking the button, function_1 will be started in a separate process and the control will turn back to wx Frame MainLoop so I can continue to do other things like making changes in the grid, don't need to wait 2 minutes. is it possible? Thanks.

import time
import wx.grid
from multiprocessing import Process

class Frame(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, None, title="Multiprocessing", size=(600, 500), pos = (300, 300))
        wx.Panel(self)
        self.SetBackgroundColour("Blue")
        grid = wx.grid.Grid(self, size=(400,100), pos=(100,100))
        grid.CreateGrid(3,3)
        for c in range(3): grid.SetColSize(c,100)
        for r in range(3):
            grid.SetRowLabelValue(r,time.strftime('%H:%M:%S'))
            for c in range(3):  grid.SetCellValue(r, c, "R"+str(r)+"/C"+str(c))
        runButton = wx.Button(self, label="Run it", pos=(250, 250))
        runButton.Bind(wx.EVT_BUTTON, self.onClick)
    def onClick(self,event):
##        p = Process(target=self.function_1)
##        p.start()
        self.function_1()
        print('function_1 run 2 minutes and return result.')
    def function_1(self):
        time.sleep(120)
if __name__ == "__main__":
    app = wx.App()
    win = Frame()
    win.CreateStatusBar()
    win.Show()
    app.MainLoop()