C# VS2022 用APlayerCaller.dll调用无法播放|APlayer 讨论区 - APlayer 开发者论坛

using Microsoft.VisualBasic.Logging;
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;

namespace MainAplayer
{
    public partial class Form1 : Form
    {
        public delegate void fun0();//声明委托
        public delegate void fun1(long l1);//声明委托
        public delegate void fun2(long l1, long l2);//声明委托
        public delegate void fun3(long l1, long l2, long l3);//声明委托
        public delegate void funstr(string l1);//声明委托
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        [DllImportAttribute("APlayerCaller.dll", EntryPoint = "APlayer_Create", SetLastError = true)]
        public static extern int APlayer_Create
        (
            long hParent,
            long x,
            long y,
            long nWidth,
            long nHeight,
            long OnMessage,
            long OnStateChanged,
            long OnOpenSuccess,
            long OnSeekCompleted,
            long OnBuffer,
            long OnVideoSizeChanged,
            long ondownloadcodec,
            long OnEvent
        );

        [DllImportAttribute("APlayerCaller.dll", EntryPoint = "APlayer_OpenW", CharSet =CharSet.Unicode, SetLastError =true)]
        public static extern bool APlayer_OpenW(long hand, string url);

        [DllImportAttribute("APlayerCaller.dll", EntryPoint = "APlayer_Play", SetLastError = true)]
        public static extern bool APlayer_Play(long hand);

        [DllImportAttribute("APlayerCaller.dll", EntryPoint = "APlayer_SetCustomLogo", SetLastError = true)]
        public static extern bool APlayer_SetCustomLogo(long hand,long logo);
        private void button1_Click(object sender, EventArgs e)
        {
            fun3 DOnMessage = new fun3(OnMessage);
            IntPtr POnMessage = Marshal.GetFunctionPointerForDelegate(DOnMessage);
            fun2 DOnStateChanged = new fun2(OnStateChanged);
            IntPtr POnStateChanged = Marshal.GetFunctionPointerForDelegate(DOnStateChanged);
            fun0 DOnOpenSuccess = new fun0(OnOpenSucceeded);
            IntPtr POnOpenSuccess = Marshal.GetFunctionPointerForDelegate(DOnOpenSuccess);
            fun1 DOnSeekCompleted = new fun1(OnSeekCompleted);
            IntPtr POnSeekCompleted = Marshal.GetFunctionPointerForDelegate(DOnSeekCompleted);
            fun1 DOnBuffer = new fun1(OnBuffer);
            IntPtr POnBuffer = Marshal.GetFunctionPointerForDelegate(DOnBuffer);
            fun0 DOnVideoSizeChanged = new fun0(OnVideoSizeChanged);
            IntPtr POnVideoSizeChanged = Marshal.GetFunctionPointerForDelegate(DOnVideoSizeChanged);
            funstr DOnDownloadCodec = new funstr(OnDownloadCodec);
            IntPtr POnDownloadCodec = Marshal.GetFunctionPointerForDelegate(DOnDownloadCodec);
            fun2 DOnEvent = new fun2(OnEvent);
            IntPtr POnEvent = Marshal.GetFunctionPointerForDelegate(DOnEvent);

            //创建代码
            long HAplayer = APlayer_Create(panel1.Handle.ToInt32(), 0, 0, 200, 200, (long)POnMessage, (long)POnStateChanged, (long)POnOpenSuccess, (long)POnSeekCompleted, (long)POnBuffer, (long)POnVideoSizeChanged, (long)POnDownloadCodec, (long)POnEvent);
            MessageBox.Show("句柄是:" + HAplayer.ToString());
            //APlayer_SetCustomLogo(HAplayer, -1);
            bool isOpen = APlayer_OpenW(HAplayer, "D:\\A\\1.mp4");
           MessageBox.Show("isOpen:" + isOpen);
           // APlayer_Play(HAplayer);
        }
        void OnMessage(long l1, long l2, long l3)
        {
            //方法体
            Debug.WriteLine(l1 + "=OnMessage=" + l2);
        }
        void OnStateChanged(long l1, long l2)
        {
            Debug.WriteLine(l1 + "=OnStateChanged=" + l2);
        }
        void OnOpenSucceeded()
        {
            Debug.WriteLine("=OnOpenSucceeded=");
        }
        void OnSeekCompleted(long l1)
        {
            Debug.WriteLine(l1 + "=OnSeekCompleted=");
        }
        void OnBuffer(long l1)
        {
            Debug.WriteLine(l1 + "=OnBuffer=");
        }
        void OnVideoSizeChanged()
        {
            Debug.WriteLine( "=OnVideoSizeChanged=" );
        }
        void OnEvent(long nEventCode, long nEventParam)
        {
            Debug.WriteLine(nEventCode + "=OnEvent=" + nEventParam);
        }
        void OnDownloadCodec(string l1)
        {
            Debug.WriteLine(l1 + "==OnDownloadCodec");

        }
    }
}