现在在窗体中放置一个按钮，只要点击按钮就相当于用户按下键盘上的Win＋L组合键
到底要如何实现啊？？
if (e.KeyCode == Keys.V && e.Win == true)
｛｝
好像不行？？KeyCode未定义啊

可不可以在按钮事件中实现按下Win+L键后要实现的功能？

WIN＋L是设定计算机的组合键
我想用软件的按钮来调用它，不知道怎么写代码
版主救命啊

你是说调用系统热键？

要用API如果是在FORM的内部就不必了，外部(全局的)肯定就要用下面的方式了，内容太多网上找了一个源码，你参考一下，还有啊，，那个BAIDU之类的东西很有用的哦，多用用。

利用windows api方式实现系统热键的功能！
主要类设计如下：
using System;
using System.Windows.Forms; // for Key namespace
using System.Runtime.InteropServices;

namespace 实现系统热键
{
/// <summary>
/// WIN32 Windows API辅助操作类.
/// </summary>
public class NativeWIN32
{
public NativeWIN32()
{}
/* ------- using WIN32 Windows API in a C# application ------- */

[DllImport("user32.dll", CharSet=CharSet.Auto)]
static public extern IntPtr GetForegroundWindow(); //

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]
public struct STRINGBUFFER
{
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=256)]
public string szText;
}

[DllImport("user32.dll", CharSet=CharSet.Auto)]
public static extern int GetWindowText(IntPtr hWnd, out STRINGBUFFER ClassName, int nMaxCount);

[DllImport("user32.dll", CharSet=CharSet.Auto)]
public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, int lParam);

[DllImport("user32.dll", CharSet=CharSet.Auto)]
public static extern IntPtr SendMessage(IntPtr hWnd, int msg, int wParam, IntPtr lParam);

public const int WM_SYSCOMMAND = 0x0112;
public const int SC_CLOSE = 0xF060;

public delegate bool EnumThreadProc(IntPtr hwnd, IntPtr lParam);

[DllImport("user32.dll", CharSet=CharSet.Auto)]
public static extern bool EnumThreadWindows(int threadId, EnumThreadProc pfnEnum, IntPtr lParam);

[DllImport("user32.dll", CharSet=CharSet.Auto)]
public static extern IntPtr FindWindowEx(IntPtr parent, IntPtr next, string sClassName, IntPtr sWindowTitle);

/* ------- using HOTKEYs in a C# application -------

in form load :
bool success = RegisterHotKey(Handle, 100, KeyModifiers.Control | KeyModifiers.Shift, Keys.J);

in form closing :
UnregisterHotKey(Handle, 100);


protected override void WndProc( ref Message m )
{
const int WM_HOTKEY = 0x0312;

switch(m.Msg)
{
case WM_HOTKEY:
MessageBox.Show("Hotkey pressed");
break;
}
base.WndProc(ref m );
}

------- using HOTKEYs in a C# application ------- */

[DllImport("user32.dll", SetLastError=true)]
public static extern bool RegisterHotKey( IntPtr hWnd, // handle to window
int id, // hot key identifier
KeyModifiers fsModifiers, // key-modifier options
Keys vk // virtual-key code
);

[DllImport("user32.dll", SetLastError=true)]
public static extern bool UnregisterHotKey( IntPtr hWnd, // handle to window
int id // hot key identifier
);

[Flags()]
public enum KeyModifiers
{
None = 0,
Alt = 1,
Control = 2,
Shift = 4,
Windows = 8
}
}
}

楼上的版主。我一点都看不懂，太杂了～！
能不能做一个程序放一下源码我来看看？？

不是吧？上面就只引入了几个API和写了几个函数啊。函数分段也很清楚哦。


protected override void WndProc( ref Message m )
{
const int WM_HOTKEY = 0x0312;

switch(m.Msg)
{
case WM_HOTKEY:
MessageBox.Show("Hotkey pressed");
break;
}
base.WndProc(ref m );
}

特别是这段，WIN回调函数，热键从这里实现。