C#處理C++庫回調報錯_Unmanaged 程式碼傳遞委託被記憶體回收

檢測到 CallbackOnCollectedDelegate
Message: 對“HBVideoParser!Videocomm.Video.HB.HBSDK+SrcDataParseCBHandler::Invoke”類型的已記憶體回收委託進行了回調。這可能會導致應用程式崩潰、損壞和資料丟失。向Unmanaged 程式碼傳遞委託時，託管應用程式必須讓這些委託保持活動狀態，直到確信不會再次調用它們。

 

        [DllImport("...")]
        public static extern bool HB_SDVR_SetParseCallBack(int lRealHandle, SrcDataParseCBHandler SrcDataParseCBFun, int nRseserved);

        [UnmanagedFunctionPointer(CallingConvention.StdCall)]
        public delegate void SrcDataParseCBHandler(int nChl, System.IntPtr SrcDataBuf, int nSize, int nFrameType, VIDEO_TIME ets, int user);

        SrcDataParseCBHandler srcDataParseCBHandler ;
        public int Start()
        {
            ...

                srcDataParseCBHandler = OnSrcDataParseCBHandler;
                bool resb = HBSDK.HB_SDVR_SetParseCallBack(CookieID, srcDataParseCBHandler, CookieID);
　　　　...    

        }
 

　　public void OnSrcDataParseCBHandler(int nChl, System.IntPtr SrcDataBuf, int nSize, int nFrameType, 　　　　　　　　                       VIDEO_TIME ets, int user)
        {...}