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SButton shows up disabled

I want to create a radar widget which positions SButtons relative to alloted geometry. I create canvas like this:

 void SLocatorScreen::Construct(const FArguments& InArgs)
         SAssignNew( Canvas , SCanvas )

Then I add slot in tick function (in tick because I need FGeometry)

 void SLocatorScreen::Tick( const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime )
     Canvas->AddSlot().Position( AllottedGeometry.GetLocalSize() / 2 ).Size( FVector2D( 20, 20 ) )
             SNew( SButton ).OnClicked( this, &SLocatorScreen::HostClick )

The button shows up but is inactive. Through widget reflector I can see that it is disabled. I tried appending .IsEnabled(true) to SNew call but it has no effect. Anyone knows why this is happening? If I create a slot in Construct button shows up enabled as expected (but I cannot place it there since i need AllotedGeometry)

Product Version: UE 4.20
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asked Sep 25 '18 at 05:40 PM in C++ Programming

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avatar image MyxaWW Sep 25 '18 at 05:49 PM

Screenshot of reflector widget: alt text

clipboard02.jpg (14.3 kB)
avatar image MyxaWW Sep 25 '18 at 06:02 PM

I've tried doing this with no success:

     TSharedPtr<SButton> MyButton;
     Canvas->AddSlot().Position( AllottedGeometry.GetLocalSize() / 2 ).Size( FVector2D( 20, 20 ) )
             SAssignNew(MyButton, SButton ).OnClicked( this, &SLocatorScreen::HostClick )
     MyButton->SetEnabled( true );
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