VB后台发送按键和鼠标（会的进，不会的免了）

Private Const PROCESS_ALL_ACCESS As Long = &H1F0FFF
Private Const WM_KEYUP = &H101‘定义普通按键抬起常量
Private Const WM_CHAR = &H102
Private Const WM_KEYDOWN = &H100‘定义普通按键按下常量
。。。。。。。。。。。
PostMessage& hwd, WM_KEYDOWN, vbKeyReturn, 0 '这是按下enter键
PostMessage hwd, WM_KEYUP, vbKeyReturn, 0 '这是弹起enter按键
这是代码的一部分代码，先声明定义有关按键常量，再向窗口句柄hwd发送。
问题：ALT＋N组合键怎么声明按键常量（其中ALT是系统按键）？
会的才回答 不好意思，本人小菜。不要误人子弟

向后台发送组合键ALT＋N，要先声明常量，怎么声明？晕倒

你的问题是不是只要系统识别你的ALT+N的快捷键？那用下面的代码··我试验过了好用的··
Private Declare Function SendMessage Lib "user32" _
Alias "SendMessageA" _
(ByVal hwnd As Long, _
ByVal wMsg As Long, _
ByVal wParam As Long, _
lParam As Any) _
As Long

Const WM_SETHOTKEY = &H32
Const HOTKEYF_ALT = &H4

Private Sub Form_Load()
Dim wHotkey As Integer
wHotkey = (HOTKEYF_ALT) * &H100 + Asc("N")
Call SendMessage(Me.hwnd, WM_SETHOTKEY, wHotkey, 0)
End Sub