[英]GetMessage() given an System.ExecutionEngineException
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Threading;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
[DllImport("user32.dll")]
public static extern
bool RegisterHotKey(IntPtr hWnd, int id, uint fsModifiers, int vk);
[DllImport("user32")]
public static extern
bool GetMessage(ref Message lpMsg, IntPtr handle, uint mMsgFilterInMain, uint mMsgFilterMax);
public const int MOD_ALT = 0x0001;
public const int MOD_CONTROL = 0x0002;
public const int MOD_SHIFT = 0x004;
public const int MOD_NOREPEAT = 0x400;
public const int WM_HOTKEY = 0x312;
public const int DSIX = 0x36;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
bool r = RegisterHotKey(Handle, 1, MOD_ALT, DSIX);
if (!r)
{
MessageBox.Show("can't do..");
return;
}
Message msg = new Message();
while (GetMessage(ref msg,IntPtr.Zero, 0, 0))
{
if (msg.message == WM_HOTKEY)
{
MessageBox.Show("do work..");
}
}
}
}
public class Message
{
public int message { get; set; }
}
}
当按下目标时,出现以下错误:
Exception of type 'System.ExecutionEngineException' was thrown.
这是什么? 如何解决这个问题? 提前致谢。
这注定要失败。 如果编写自己的消息循环,它将停止WinForms接收任何消息。
而是改写PreProcessMessage或WndProc函数。
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