Prevent window resizing in Unreal Engine

WindowResizeBlueprintLibrary.cpp

bool UWindowResizeBlueprintLibrary::SetWindowNoResize(FText WindowName)
{
	const TSharedPtr<SDockTab> ActiveTab = FGlobalTabmanager::Get()->GetActiveTab();
	if(ActiveTab.IsValid())
	{
		const TSharedPtr<SWindow> Window = ActiveTab->GetParentWindow();
		if(Window.IsValid() && Window->GetTitle().EqualTo(WindowName))
		{
			Window->SetSizingRule(ESizingRule::FixedSize);
			return true;
		} 
		UE_LOG(LogTemp, Error, TEXT("ActiveTab window not valid!"));
		return false;
	}
	UE_LOG(LogTemp, Error, TEXT("ActiveTab is not valid!"));
	return false;
}