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How can I SetKeyboardFocus on a UEditableTextBox in UserWidget at game beginning?

I test and fount that: UEditableTextBox::SetKeyboardFocus() only works at GameMode::BeginPlay(), but I want a override function in UUserWidget and invoke SetKeyboardFocus() in it, because I want put all UI logic code in UserWidget class. UUserWidget has no BeginPlaye() function and even I call SetKeyboardFocus in UUserWidget::Initialize() function, it doesn't work.

Product Version: UE 4.12 Preview
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asked May 25 '16 at 09:41 AM in C++ Programming

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