截系统热键
A;public class Win32Hook
{

[DllImport("kernel32")]
public static extern int GetCurrentThreadId();

[DllImport( "user32",
CharSet=CharSet.Auto,CallingConvention=CallingConvention.StdCall)]
public static extern int  SetWindowsHookEx(
HookType idHook,
HOOKPROC lpfn,
int hmod,
int dwThreadId);

public enum HookType
{
WH_KEYBOARD = 2
}

public delegate int HOOKPROC(int nCode, int wParam, intlParam);

public void SetHook()
{
// set the keyboard hook
SetWindowsHookEx(HookType.WH_KEYBOARD,
new HOOKPROC(this.MyKeyboardProc),
0,
GetCurrentThreadId());
}

public int MyKeyboardProc(int nCode, int wParam, int lParam)
{
//Perform your process
return 0;
}
}