Question

vb6.0 怎样用按键控制command？

就是怎么样才能在form1中，只要按回车command1就被触发click事件。
还有什么叫全局热键？

Answer 1

1.把command1的Default属性设置为True就OK了

2.全局热键盘就是无论程序有没有焦点也能响应按键操作，如下面的一个例子

新建立一个FORM~

Private Sub Form_Load()
Dim ret As Long
preWinProc = GetWindowLong(Me.hwnd, GWL_WNDPROC)
ret = SetWindowLong(Me.hwnd, GWL_WNDPROC, AddressOf Wndproc)
idHotKey = 1
Modifiers = MOD_ALT + MOD_CONTROL
uVirtKey = vbKeyA
ret = RegisterHotKey(Me.hwnd, idHotKey, Modifiers, uVirtKey)
End Sub

Private Sub Form_Unload(Cancel As Integer)
Dim ret As Long
ret = SetWindowLong(Me.hwnd, GWL_WNDPROC, preWinProc)
Call UnregisterHotKey(Me.hwnd, uVirtKey)

End Sub

新建立一个模块

Option Explicit

Declare Function SetWindowLong Lib "User32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Declare Function GetWindowLong Lib "User32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long
Declare Function CallWindowProc Lib "User32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hwnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Declare Function RegisterHotKey Lib "User32" (ByVal hwnd As Long, ByVal id As Long, ByVal fsModifiers As Long, ByVal vk As Long) As Long
Declare Function UnregisterHotKey Lib "User32" (ByVal hwnd As Long, ByVal id As Long) As Long

Public Const WM_HOTKEY = &H312
Public Const MOD_ALT = &H1
Public Const MOD_CONTROL = &H2
Public Const MOD_SHIFT = &H4
Public Const GWL_WNDPROC = (-4)

Public preWinProc As Long
Public Modifiers As Long, uVirtKey As Long, idHotKey As Long

Private Type taLong
ll As Long
End Type

Private Type t2Int
lWord As Integer
hWord As Integer
End Type

Public Function Wndproc(ByVal hwnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
If Msg = WM_HOTKEY Then
If wParam = idHotKey Then
Dim lp As taLong, i2 As t2Int
lp.ll = lParam
LSet i2 = lp
If (i2.lWord = Modifiers) And i2.hWord = uVirtKey Then
msgbox "你按下了热键哦~"
End If
End If
End If
Wndproc = CallWindowProc(preWinProc, hwnd, Msg, wParam, lParam)
End Function

Answer 2

Private Sub Command1_Click()
MsgBox "a"
End Sub

Private Sub Form_Load()
Command1.Default = True
End Sub

全局热键就是当你程序窗体没有焦点的时候~利用预先设置好的 快捷键可调用你程序的功能~

Answer 3

将按钮的Default属性值设为true
只要按回车command1就被触发click事件。