这段代码对可以在任何时候得到指定的按键时间,你会有用的:
private void Form1_Load(object sender, System.EventArgs e)
{
Keys m_hotkey=Keys.Home;
SetHotKey(m_hotkey, false,false,false,false);
} protected override void WndProc( ref Message m )
{
const int WM_HOTKEY = 0x0312;
switch(m.Msg)
{
case WM_HOTKEY:
MessageBox.Show("您点了home键!");
break;
}
base.WndProc(ref m );
} public void SetHotKey(Keys c, bool bCtrl, bool bShift, bool bAlt, bool bWindows)
{
NativeWIN32.KeyModifiers modifiers = NativeWIN32.KeyModifiers.None;
NativeWIN32.RegisterHotKey(Handle, 100, modifiers, c);
} public class NativeWIN32
{
public NativeWIN32()
{} [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); [DllImport("user32.dll", SetLastError=true)]
public static extern bool RegisterHotKey( IntPtr hWnd,
int id,
KeyModifiers fsModifiers,
Keys vk
);
[DllImport("user32.dll", SetLastError=true)]
public static extern bool UnregisterHotKey( IntPtr hWnd,
int id
); [Flags()]
public enum KeyModifiers
{
None = 0,
Alt = 1,
Control = 2,
Shift = 4,
Windows = 8
} }
