// ctor runs from within a lock, and should be as quick as is possible
public HookLifetimeManager(HookCallback callback)
{
Contract.Requires(callback != null);
this.pGetMessageHook_Callback = GetMessageHook_Callback;
this.pSendMessageHook_Callback = SendMessageHook_Callback;
this.Callback = callback;
this.GetMessageHook = SetWindowsHookEx(WH_GETMESSAGE, pGetMessageHook_Callback, IntPtr.Zero, GetCurrentThreadId());
if (this.GetMessageHook.IsInvalid)
{
throw new Win32Exception();
}
try
{
this.SendMessageHook = SetWindowsHookEx(WH_CALLWNDPROCRET, pSendMessageHook_Callback, IntPtr.Zero, GetCurrentThreadId());
if (this.SendMessageHook.IsInvalid)
{
throw new Win32Exception();
}
}
catch
{
GetMessageHook.Dispose();
throw;
}
}
public static extern IntPtr CallNextHookEx(HookSafeHandle hhk, int nCode, IntPtr wParam, IntPtr lParam);
