How to reposition a UUserWidget in C++

Development Programming & Scripting UI
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1

I have a subclass of UUserWidget which I want to make a floating widget. I.e. if the user clicks on the widget and drags the mouse, the widget should follow the mouse.

I keep track of the user pressing the mouse button when over the widget, but I can’t get the widget to move.

FReply USRSFloatingWidget::NativeOnMouseMove(const FGeometry& InGeometry, const FPointerEvent& InMouseEvent)
{
	if (bIsMouseButtonDown)
	{
		FVector2D delta = InMouseEvent.GetCursorDelta();
		GEngine->AddOnScreenDebugMessage(-1, 1.5, FColor::Red, delta.ToString());
		this->SetPositionInViewport(InGeometry.GetAbsolutePosition() + delta);
	}
	

	return FReply::Handled();
}

The Debug message tells me that delta is not 0, but SetPositionInViewport does not do anything and I couldn’t find a different method for setting the position.

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