How to make a window resize as I want?

[Magicloud Magiclouds <magicloud magiclouds gmail com>]

Hi,
  I have a custom-widget in a window. The size of the widget is
specified by how many chars I want to display in it. So I made a
'colnum' perproty for it, and set the 'width_request' property when
outside set the 'colnum' property. The widget seems fine.


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