UE4 4.25 头文件 反射UI

//反射UI
UPROPERTY(meta = (BindWidget))
　　class UNamedSlot* InventoryWidgetSlot;

//反射UI
UPROPERTY(meta = (BindWidget))
　　class UHorizontalBox* GameButtonSlot;

加载Widget

UMainWidget* AInventorySystemHUD::GetMainWidget()
{
    if (!MainWidget)
    {
        //加载指定模板类
        TSubclassOf<UMainWidget>MainWidgetClass = LoadClass<UMainWidget>
            (
                GetWorld(),
                TEXT("WidgetBlueprint'/Game/BluePrint/MainWidget_WBP.MainWidget_WBP_C'") //加载蓝图资源后缀_C
                );

        check(MainWidgetClass && "MainWidgetClass == NULL");

        //创建MainWidget
        MainWidget = CreateWidget<UMainWidget>(GetWorld(), MainWidgetClass);
        //添加到视口
        MainWidget->AddToViewport();
    }

    check(MainWidget && "MainWidget == NULL");
    return MainWidget;

}