调用系统API,XP和win7是不是有差别啊！
我需要用一个键盘钩子和鼠标钩子来控制键盘鼠标，但是我在windows7下面使用没有任何问题。到了XP环境下面就发现，装载钩子是好的，但是卸载钩子后，键盘按键就不正常了，按键不对应了，特别是alt,ctrl,shift这几个键。难道XP环境和windows7环境下有什么区别吗？
class KeyBoardHook--------------------编程问答-------------------- 当然应该有差别的啊 --------------------编程问答-------------------- 没有的 --------------------编程问答--------------------
{
//委托
public delegate int HookProc(int nCode, int wParam, IntPtr lParam);
static int hHook = 0;
public const int WH_KEYBOARD_LL = 13;
//LowLevel键盘截获，如果是WH_KEYBOARD＝2，并不能对系统键盘截取，Acrobat Reader会在你截取之前获得键盘。
HookProc KeyBoardHookProcedure;
//键盘Hook结构函数
[StructLayout(LayoutKind.Sequential)]
public class KeyBoardHookStruct
{
public int vkCode;
public int scanCode;
public int flags;
public int time;
public int dwExtraInfo;
}
#region DllImport
//设置钩子
[DllImport("user32.dll")]
public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
//抽掉钩子
public static extern bool UnhookWindowsHookEx(int idHook);
[DllImport("user32.dll")]
//调用下一个钩子
public static extern int CallNextHookEx(int idHook, int nCode, int wParam, IntPtr lParam);
[DllImport("kernel32.dll")]
public static extern int GetCurrentThreadId();
[DllImport("kernel32.dll")]
public static extern IntPtr GetModuleHandle(string name);
#endregion
#region 自定义事件
public void Hook_Start()
{
// 安装键盘钩子
if (hHook == 0)
{
KeyBoardHookProcedure = new HookProc(KeyBoardHookProc);
//hHook = SetWindowsHookEx(2,
// KeyBoardHookProcedure,
// GetModuleHandle(Process.GetCurrentProcess().MainModule.ModuleName), GetCurrentThreadId());
hHook = SetWindowsHookEx(WH_KEYBOARD_LL,
KeyBoardHookProcedure,
GetModuleHandle(Process.GetCurrentProcess().MainModule.ModuleName), 0);
//如果设置钩子失败.
if (hHook == 0)
{
Hook_Clear();
throw new Exception("设置Hook失败!");
}
}
}
//取消钩子事件
public void Hook_Clear()
{
bool retKeyboard = true;
if (hHook != 0)
{
retKeyboard = UnhookWindowsHookEx(hHook);
hHook = 0;
}
//如果去掉钩子失败.
if (!retKeyboard) throw new Exception("UnhookWindowsHookEx failed.");
}
//这里可以添加自己想要的信息处理
public static int KeyBoardHookProc(int nCode, int wParam, IntPtr lParam)
{
if (nCode >= 0)
{
KeyBoardHookStruct kbh = (KeyBoardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyBoardHookStruct));
return 1;
}
return CallNextHookEx(hHook, nCode, wParam, lParam);
}
#endregion
补充：.NET技术 , C#
