外贸英语app:vb问题keypress问题

一种简单方法是 你可以把你的窗体 放在最前面 然后隐藏 这个方法有缺陷，你用了就知道：）

正规的方法是：用api 创建系统热键

Option Explicit
' 声明API函数
Private Declare Function RegisterHotKey Lib "user32" (ByVal hWnd As Long, ByVal id As Long, ByVal fsModifiers As Long, ByVal vk As Long) As Long
Private Declare Function UnregisterHotKey Lib "user32" (ByVal hWnd As Long, ByVal id As Long) As Long
Private Declare Function PeekMessage Lib "user32" Alias "PeekMessageA" (lpMsg As Msg, ByVal hWnd As Long, ByVal wMsgFilterMin As Long, ByVal wMsgFilterMax As Long, ByVal wRemoveMsg As Long) As Long
Private Declare Function WaitMessage Lib "user32" () As Long
' 声明结构
Private Type POINTAPI
x As Long
y As Long
End Type
Private Type Msg
hWnd As Long
Message As Long
wParam As Long
lParam As Long
time As Long
pt As POINTAPI
End Type
' 声明常数
Private Const MOD_ALT = &H1
Private Const MOD_CONTROL = &H2
Private Const MOD_SHIFT = &H4
Private Const PM_REMOVE = &H1
Private Const WM_HOTKEY = &H312

Private HotKey_Flg As Boolean

Private Sub Form_Load()
Dim Message As Msg

'注册 Ctrl+Shift+I 为热键
RegisterHotKey Me.hWnd, &HBFFF&, MOD_CONTROL + MOD_SHIFT, vbKeyI
Me.Show
'等待处理消息
HotKey_Flg = False
Do While Not HotKey_Flg
'等待消息
WaitMessage
'检查是否热键被按下
If PeekMessage(Message, Me.hWnd, WM_HOTKEY, WM_HOTKEY, PM_REMOVE) Then
'打开计算器程序
Shell "calc.exe", vbNormalFocus
End If
'转让控制权,允许操作系统处理其他事件
DoEvents
Loop
End Sub

Private Sub Form_Unload(Cancel As Integer)
HotKey_Flg = True
'撤销热键的注册
Call UnregisterHotKey(Me.hWnd, &HBFFF&)
End Sub

'这样实现简单实用
Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As Long) As Integer
Dim CtrlDown As Boolean

Private Sub Form_Load()
Timer1.Interval = 1
Timer1.Enabled = True
End Sub

Private Sub Timer1_Timer()
If GetAsyncKeyState(vbKeyControl) = -32767 Or GetAsyncKeyState(vbKeyControl) = -32768 Then
CtrlDown = True
Else
CtrlDown = False
End If
If GetAsyncKeyState(vbKeyQ) = -32767 And CtrlDown Then
myDo'按下“Ctrl+Q”键时执行myDo过程
End If
End Sub
Private Sub myDo() '这里是你想执行的语句

End Sub

用一个叫Hotkey的控件就能解决问题

线程.