More fixing everything

Source/Integration/RootCanvas.h

@@ -59,6 +59,22 @@ public:
 	// events in the Event Graph are deactivated.
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Luprex|Input Mode")
 	bool EnableEnhancedInput = true;
+
+	// Knowing whether the slot is under construction helps us to work
+	// around some bugs in Unreal.  See below.
+	bool SlotUnderConstruction = true;
+	
+	// Reliable version of SetZOrder.  There is a bug in the normal version of
+	// SetZOrder: it crashes if you use it during OnConstruct.  We have a
+	// workaround, but it requires using a different getter and setter.
+	UFUNCTION(BlueprintCallable, Category = "Luprex|Input Mode")
+	void SetZOrderReliable(int32 Order);
+
+	// Reliable version of GetZOrder.  There is a bug in the normal version of
+	// SetZOrder: it crashes if you use it during OnConstruct.  We have a
+	// workaround, but it requires using a different getter and setter.
+	UFUNCTION(BlueprintCallable, Category = "Luprex|Input Mode")
+	int32 GetZOrderReliable();
 };
 
 ////////////////////////////////////////////////////////////
@@ -91,13 +107,6 @@ public:
 	// Used as the basis for placing new widgets on top.
 	int32 GetMaxZOrder() const;
 
-	// SetZOrder is buggy: if you call it inside Event Construct,
-	// it crashes.  So we've developed a hack to make it reliable.  
-	// To set the zorder, you store the value in the slot property,
-	// without calling SetZorder.  This routine, which is used later,
-	// propagates that value into the slate widgets.
-	void PropagateZOrderToSlate();
-
 	// This function updates several window-management-related properties
 	// which are stored in the UserWidget and the lxRootCanvasSlot.  Note that
 	// it is perfectly legal to edit these properties by other means: this
@@ -122,10 +131,6 @@ protected:
 
 	// UPanelWidget
 	virtual UClass* GetSlotClass() const override;
-
-public:
-
-	bool MustPropagateZOrderToSlate = false;
 };