Slate OnMouseLeave event triggered on mouse zero coordinates

Development Programming & Scripting UI
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1

Hi, the problem is that SCompoundWidget triggering OnMouseLeave event when mouse touches top or left sides of the viewport, but still in the viewport.

Please, help me fix that.

Here is a code of widget:

STest.h:

class CLOSETHEGATE_API STest : public SCompoundWidget
{
public:
	SLATE_BEGIN_ARGS(STest)
	{}
	SLATE_END_ARGS()

	void Construct(const FArguments& InArgs);
	virtual void OnMouseLeave(const FPointerEvent& MouseEvent) override;
};

STest.cpp:

void STest::Construct(const FArguments& InArgs)
{
    ChildSlot
	.VAlign(VAlign_Fill)
	.HAlign(HAlign_Fill)
	[
		CONTENT
	];
}
void STest::OnMouseLeave(const FPointerEvent& MouseEvent)
{
	UE_LOG(LogTemp, Error, TEXT("Out of widget"));
}

And somwhere in HUD created instance of the STest widget:

if (GEngine)
{
	GEngine->GameViewport->AddViewportWidgetContent
	(
		SNew(SWeakWidget)
		.PossiblyNullContent(STest_VARIABLE.ToSharedRef())
	);
}
STest_VARIABLE->SetVisibility(EVisibility::Visible);

So, with this code, when you touches left or top sides of window you will get “Out of widget” error in log.

2

Why u set .VAlign(VAlign_Fill).HAlign(HAlign_Fill) at childslot? Its fill by default.