Question

vb 已知某程序句柄 如何模拟alt键按下事件

如题 已知句柄 如何实现alt键在其上按下？希望写出源码 谢谢

Answer 1

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

Private Const WM_KEYDOWN = &H100 '按下
Private Const WM_KEYUP = &H101 '释放
Private Const Key_Alt = 18

Private Sub Alt(hwnd As Long)
SendMessage hwnd, WM_KEYDOWN, Key_Alt, 0
End Sub

'Alt这个过程可以实现alt键在其上按下

望采纳，谢谢