how to create handles??

2016 12 24
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更新时间：2016 12 26
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i created one textbox and one push button, made it validation. but i got undefined handles error. i don't know how to create handles. basically gui will automatically creates handles using gui. but i created this 2 using uicontrol. i wrote call back for push button, i got undefined handles error.
please help me to solve the handles error.

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Jan
Jan 2016-12-26
编辑：Jan 2016-12-26
Please post your code and the complete error message. We have to guess, what you have written, to suggest an improvement.

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