Question

我试图在.Net Core 2.0中使用PostThreadMessage和GetMessage，但它失败了。

这是我的代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApp2
{
class Program
{
    [DllImport("user32.dll")]
    public static extern int GetMessage(out MSG lpMsg, IntPtr hWnd, uint wMsgFilterMin, uint wMsgFilterMax);

    [DllImport("user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool PeekMessage(out MSG lpMsg, IntPtr hWnd, uint wMsgFilterMin, uint wMsgFilterMax, uint wRemoveMsg);

    [DllImport("user32.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool PostThreadMessage(uint threadId, uint msg, UIntPtr wParam, IntPtr lParam);

    [DllImport("Kernel32.dll", SetLastError = true)]
    public static extern Int32 GetLastError();

    [StructLayout(LayoutKind.Sequential)]
    public struct MSG
    {
        public IntPtr hwnd;
        public uint message;
        public IntPtr wParam;
        public IntPtr lParam;
        public uint time;
    }

    private static uint threadId = 0;
    static void Main(string[] args)
    {
        var mMsgThread = new Thread(MyThread);
        mMsgThread.Priority = ThreadPriority.Highest;
        mMsgThread.Start();
        Thread.Sleep(100);
        bool status = PostThreadMessage(threadId, 0, UIntPtr.Zero, IntPtr.Zero);
        Int32 err = GetLastError();
    }

    private static void MyThread(object obj)
    {
#pragma warning disable CS0618 // Type or member is obsolete
        threadId = (uint)AppDomain.GetCurrentThreadId();
#pragma warning restore CS0618 // Type or member is obsolete
        MSG Msg = new MSG();

        var RetVal = GetMessage(out Msg, IntPtr.Zero, 0, 0);
        Console.WriteLine(RetVal);
    }
}
}

我弄错了＃39;来自PostThreadMessage，GetLastError（）返回0（而不是真正的错误）。

此代码在.Net Framework上正常运行

如何在.Net Core 2.0上运行它？

.Net core 2.0中的PostThreadMessage失败

0 个答案: