网上下载的代码， 运行一直不成功 hHookKey 值一直为 0
CE5.0 + .NET 3.5 的环境
请高手 帮忙看下 已经搞了二天了
public class Hook
{
int hHookKey;
public delegate int HookKeyProc(int code, IntPtr wParam, IntPtr lParam);
private HookKeyProc hookKeyDeleg;
public Hook()
{ }
#region public methods
//安装钩子
public void Start()
{
if (hHookKey != 0)
{
//Unhook the previouse one
this.Stop();
}
hookKeyDeleg = new HookKeyProc(HookKeyProcedure);
// hHookKey = SetWindowsHookEx(WH_KEYBOARD_LL, hookKeyDeleg, GetModuleHandle(null), 0);
hHookKey = SetWindowsHookEx(WH_KEYBOARD_LL, hookKeyDeleg, GetModuleHandle(null), 0);
if (hHookKey == 0)
{
throw new SystemException("Failed acquiring of the hook.");
}
}
//拆除钩子
public void Stop()
{
UnhookWindowsHookEx(hHookKey);
}
#endregion
#region protected and private methods
private int HookKeyProcedure(int code, IntPtr wParam, IntPtr lParam)
{
KBDLLHOOKSTRUCT hookStruct = (KBDLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(KBDLLHOOKSTRUCT));
if (code < 0)
return CallNextHookEx(hookKeyDeleg, code, wParam, lParam);
if (hookStruct.vkCode == 0x5B)
{
//如果捕捉到VK_LWIN按键
//......处理......
return -1; //返回-1表示已经处理了，不再往下传递
}
if (hookStruct.vkCode == 0x25)
{
//如果捕捉到VK_LEFT按键
//......处理......
return -1;
}
// 没处理的键的消息往下传递
return CallNextHookEx(hookKeyDeleg, code, wParam, lParam);
}
#endregion
#region P/Invoke declarations
[DllImport("coredll.dll")]
private static extern int SetWindowsHookEx(int type, HookKeyProc HookKeyProc, IntPtr hInstance, int m);
//private static extern int SetWindowsHookEx(int type, HookMouseProc HookMouseProc, IntPtr hInstance, int m);
//[DllImport("coredll.dll")]
//public static extern IntPtr GetModuleHandle(string name);
[DllImport("coredll.dll")]
private static extern IntPtr GetModuleHandle(string mod);
[DllImport("coredll.dll")]
private static extern int CallNextHookEx(
HookKeyProc hhk,
int nCode,
IntPtr wParam,
IntPtr lParam
);
[DllImport("coredll.dll")]
private static extern int GetCurrentThreadId();
[DllImport("coredll.dll", SetLastError = true)]
private static extern int UnhookWindowsHookEx(int idHook);
private struct KBDLLHOOKSTRUCT
{
public int vkCode;
public int scanCode;
public int flags;
public int time;
public IntPtr dwExtraInfo;
}
const int WH_KEYBOARD_LL = 20;
public class KeyBoardInfo
{
public int vkCode;
public int scanCode;
public int flags;
public int time;
}
#endregion
}
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