Calling button-click events from different classes

[dunderhead]

Hello,

I am having a problem with function and class syntax.

I have one class (MakePanel1) that creates a button and label. The button-click event of the button is linked to a function (daclick1) that changes the text of the label. This works well.

I have another class (MakePanel2) that creates a second button. I want this second button to call the button-click function of the first button.

My incorrect call MakePanel1.dacl ick1() whilst in the MakePanel2 class produces the error ' TypeError: unbound method daclick1() must be called with MakePanel1 instance as first argument (got nothing instead) '.

#!/usr/bin/python


import wx
import time


class MakePanel1(wx.Panel):
	def __init__(self, Parent, *args, **kwargs):
		wx.Panel.__init__(self, Parent, *args, **kwargs)
		
		self.dalabel = wx.StaticText(self, -1, "   panel 1 label   ")
		self.dabutton1 = wx.Button(self, label="button 1") 
		self.dabutton1.Bind(wx.EVT_BUTTON, self.daclick1 )
		self.bs1 = wx.BoxSizer(wx.HORIZONTAL)
		self.bs1.Add(self.dabutton1,0)
		self.bs1.Add(self.dalabel,0)
		self.SetSizer(self.bs1)
		
	def daclick1(self, event):
		self.dalabel.SetLabel(str(time.time()))


class MakePanel2(wx.Panel):
	def __init__(self, Parent, *args, **kwargs):
		wx.Panel.__init__(self, Parent, *args, **kwargs)

		self.dabutton2 = wx.Button(self, label="button 2") 
		self.dabutton2.Bind(wx.EVT_BUTTON, self.daclick2 )
		self.bs2 = wx.BoxSizer(wx.HORIZONTAL)
		self.bs2.Add(self.dabutton2,0,wx.ALL,20)
		self.SetSizer(self.bs2)

	def daclick2(self, event):
		MakePanel1.daclick1()

class DisFrame(wx.Frame):
	def __init__(self, *args, **kwargs):
		wx.Frame.__init__(self, *args, **kwargs)

		self.Panel1 = MakePanel1(self)
		self.Panel2 = MakePanel2(self)

		bs = wx.BoxSizer(wx.VERTICAL)
		bs.Add(self.Panel1,1,wx.EXPAND);
		bs.Add(self.Panel2,1,wx.EXPAND);

		self.SetSizer(bs)
		self.Fit()


if __name__ == '__main__':
	app = wx.App()
	daframe = DisFrame(None)
	daframe.Show()
	app.MainLoop()

How do I call the button-click function of dabutton1 whilst in the button-click function of dabutton2 ?

Any assistance appreciated. Thanks.

[dunderhead]

Well, after experimenting with various function calls I managed to find a solution to my problem.

I changed:

MakePanel1.daclick1()

to

MakePanel1.daclick1(daframe.Panel1,None)

... and the program works.

daframe.Panel1 in the above call references a panel created by the MakePanel1 class, and this is the class that contains the function daclick1().

Being a python novice I don't understand why such a call is necessary, or if it imposes any potentially hazardous baggage onto an application.

[bartonc]

Here's a neat trick. Def in the frame and use Parent.daclick (which sets the label in its panel1).

#!/usr/bin/python


import wx
import time


class MakePanel1(wx.Panel):
	def __init__(self, Parent, *args, **kwargs):
		wx.Panel.__init__(self, Parent, *args, **kwargs)
		
		self.dalabel = wx.StaticText(self, -1, "   panel 1 label   ")
		self.dabutton1 = wx.Button(self, label="button 1") 
		## Use Parent method instead of self
		self.dabutton1.Bind(wx.EVT_BUTTON, Parent.daclick )
		self.bs1 = wx.BoxSizer(wx.HORIZONTAL)
		self.bs1.Add(self.dabutton1,0)
		self.bs1.Add(self.dalabel,0)
		self.SetSizer(self.bs1)


class MakePanel2(wx.Panel):
	def __init__(self, Parent, *args, **kwargs):
		wx.Panel.__init__(self, Parent, *args, **kwargs)

		self.dabutton2 = wx.Button(self, label="button 2") 
		## Use Parent method instead of self
		self.dabutton2.Bind(wx.EVT_BUTTON, Parent.daclick )
		self.bs2 = wx.BoxSizer(wx.HORIZONTAL)
		self.bs2.Add(self.dabutton2,0,wx.ALL,20)
		self.SetSizer(self.bs2)

class DisFrame(wx.Frame):
	def __init__(self, *args, **kwargs):
		wx.Frame.__init__(self, *args, **kwargs)

		self.Panel1 = MakePanel1(self)
		self.Panel2 = MakePanel2(self)

		bs = wx.BoxSizer(wx.VERTICAL)
		bs.Add(self.Panel1,1,wx.EXPAND);
		bs.Add(self.Panel2,1,wx.EXPAND);

		self.SetSizer(bs)
		self.Fit()
		
	def daclick(self, event):
		self.Panel1.dalabel.SetLabel(str(time.time()))


if __name__ == '__main__':
	app = wx.App()
	daframe = DisFrame(None)
	daframe.Show()
	app.MainLoop()