UUserWidget gets garbage collected over time

Development Programming & Scripting UI
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1

Hello. Every time I play my game it’s running normally. I can open the UI inventory but after leaving it for quite some time and open the inventory again It crashes with “EXCEPTION_ACCESS_VIOLATION reading address 0x02000fa0”. I keep a reference in my player controller, I create the widget from the begin play and store a pointer to it. Approximately around 1 min and 30 seconds running the game when I open My inventory UI the engine crashes

2

UObjects member fields should be tagged as UPROPERTY so they are properly managed. You can use UPROPERTY only if your containing class is also a UObject. If it is not, then implement the FGCObject interface

Example 1:

class UOwnerClass : public UObject {
public:
  UPROPERTY()
  UUserWidget* MyWidget;
};

Example 2:

class FOwnerClass : public FGCObject {
public:
   virtual void AddReferencedObjects( FReferenceCollector& Collector) override {
      Collector.AddReferencedObject(MyWidget);
   }
private:
  UUserWidget* MyWidget;
};
3

Hi thank you for replying. I’m quite not familiar with the FGCObject Interface yet. Does that mean I would handle the GC of my widget?

4

I’ve already tried to add UPROPERTY It still marks my widget as garbage automatically.

5

Hi. I had 1 Uobject in my userwidget that is not set to UPROPERTY(). it finally worked! Thank you so much! :slight_smile: