private static HookResult HookApp(int hookId, Callback callback)
{
_appHookProc = (code, param, lParam) => HookProcedure(code, param, lParam, callback);
var hookHandle = HookNativeMethods.SetWindowsHookEx(
hookId,
_appHookProc,
IntPtr.Zero,
ThreadNativeMethods.GetCurrentThreadId());
if (hookHandle.IsInvalid)
{
ThrowLastUnmanagedErrorAsException();
}
return(new HookResult(hookHandle, _appHookProc));
}
private static HookResult HookGlobal(int hookId, Callback callback)
{
_globalHookProc = (code, param, lParam) => HookProcedure(code, param, lParam, callback);
var hookHandle = HookNativeMethods.SetWindowsHookEx(
hookId,
_globalHookProc,
Process.GetCurrentProcess().MainModule.BaseAddress,
0);
if (hookHandle.IsInvalid)
{
ThrowLastUnmanagedErrorAsException();
}
return(new HookResult(hookHandle, _globalHookProc));
}
private static IntPtr CallNextHookEx(int nCode, IntPtr wParam, IntPtr lParam)
{
return(HookNativeMethods.CallNextHookEx(IntPtr.Zero, nCode, wParam, lParam));
}
protected override bool ReleaseHandle()
{
//NOTE Calling Unhook during processexit causes deley
//if (_closing) return true;
return(HookNativeMethods.UnhookWindowsHookEx(handle) != 0);
}
