CODEWITHSUNDEEP
pythoneventswxpython
Alex
Alex

Reputation: 4180

wxPython: How to update window size as the window resizes in real-time

I would like to be able to obtain the window size of an app and pass it to other modules in an application, and when the window size updates (say, if a user resizes the window), the updated window size also gets passed to other modules.

For example, I tried something like the code below where I tried to store the window size in self.size so that it could be used in foo(). However, this code would give me an error message saying 'TestPanel' object has no attribute 'size. I wonder if there is a way to do what I want to accomplish. 

import wx
class TestPanel(wx.Panel):

    def __init__(self, parent):
        wx.Panel.__init__(self, parent, -1)
        self.Bind(wx.EVT_SIZE, self.OnSize, self)
        self.foo()

    def Resize(self):
        self.size = self.GetSize()

    def OnSize(self, event):
        self.Resize()

    def foo(self):
        print(self.size)

if __name__ == '__main__':
    app = wx.App(False)
    f = wx.Frame(None, -1)
    TestPanel(f)
    f.Show()
    app.MainLoop()

Upvotes: 0

Views: 660

Answers (1)

metatoaster
metatoaster

Reputation: 18898

You need to first find out what gave you that error message in the first place. With your code as is, do realize that in the __init__ method, the size attribute was not set anywhere before its foo was called, giving you that error.

What you want to do is to delay the calling of foo to your handler for EVT_SIZE, in this case OnSize. The event will be called when the window becomes visible as it will be resized to the default size (thus setting self.size). You could then simplify what you want to do to:

class TestPanel(wx.Panel):

    def __init__(self, parent):
        wx.Panel.__init__(self, parent, -1)
        self.Bind(wx.EVT_SIZE, self.OnSize, self)

    def OnSize(self, event):
        self.size = self.GetSize()
        self.foo()

    def foo(self):
        print(self.size)

Override foo to call into the other window, or whatever.

Upvotes: 1

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