[Glade-users] How to use "user_data" in glade3?

[donglongchao at 163.com (donglongchao)]

Hi,all
I am new to Glade3,and I want to know how to use "user_data" to pass my widget into my callback function?
I input the name of the widget,but it seems no use.
Will someone help?Thanks.
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