vb中的两种热键用法。 第一种:定义激活窗口的热键 这个热键的功能是无论在哪个程序中,只要按下我们定义的这组热键就可以激活某个窗体。这里我们要用到sendmessage这个API函数。程序如下: Option Explicit 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_SHIFT = &H1 ' shift键 Const HOTKEYF_CONTROL = &H2 'ctrl键 Const HOTKEYF_ALT = &H4 'alt键 Const HOTKEYF_EXT = &H8 '附加键
Private Type tInteger aint As Integer End Type Private Type t2Byte lByte As Byte hByte As Byte End Type Private ii As tInteger Private bb As t2Byte
Private Sub Command1_Click() Dim wParam As Long, I As Long
'设定ctl-shift-T为该window的hotkey bb.hByte = HOTKEYF_CONTROL Or HOTKEYF_SHIFT bb.lByte = vbKeyT LSet ii = bb
wParam = CLng(ii.aint) I = SendMessage(Me.hwnd, WM_SETHOTKEY, wParam, 0) If I = 1 Then Debug.Print “Ctl-Shift-T为hotkey” Else If I = 2 Then Debug.Print “有其他Window也用Ctl-Shift-T作Hotkey” Else Debug.Print “指定失败” End If End If End Sub 注: SendMessage()的传回值有以下的意义: -1 hotkey 设定不对 0 hWnd的指定有错 1 成功,并且没有其他window用相同的hotkey 2 成功,但是有其他window使用相同的hotkey 第二种:定义运行某个程序的热键 在DOS时代,我们常用拦截中断向量的方法来实现热键的功能。现在我们可以用RegisterHotKey这个API函数来定义热键。当热键注册过后,无论我们在哪个程序中按下这组热键,系统会把相关信息传递给等待接收这个信息的窗口,再由这个窗口来处理信息,完成指定功能。所以在接收信息的窗口中还要采用子分类的方法来处理,程序结束时用unRegisterHotKey来取消热键的定义。 RegisterHotKey的参数结构如下: RegisterHotKey(ByVal hwnd As Long,//接收Hotkey的Window ByVal idHotKey as Long, // 热键的ID,范围从 0x0000 到 0xBFFF ByVal Modifiers As Long, // 定义alt shift control等的组合 ByVal uVirtKey As Long // 低端的键值 ) 下面我们就来看看具体程序,这个程序的功能是无论在哪个程序中按下ALT-SHIFT-G就执行记事本程序: '以下程序放在模块中 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 Debug.Print “HotKey Shift-Alt-G Pressed ” Shell “notepad”, vbNormalFocus End If End If End If '如果不是热键信息则调用原来的程序 wndproc = CallWindowProc(preWinProc, hwnd, Msg, wParam, lParam) End Function
'以下程序放在窗体中 Sub Form_Load() Dim ret As Long '记录原来的window程序地址 preWinProc = GetWindowLong(Me.hwnd, GWL_WNDPROC) '用自定义程序代替原来的window程序 ret = SetWindowLong(Me.hwnd, GWL_WNDPROC, AddressOf wndproc) idHotKey = 1 'in the range &h0000 through &hBFFF Modifiers = MOD_ALT + MOD_SHIFT uVirtKey = vbKeyG '注册热键 ret =RegisterHotKey(Me.hwnd, idHotKey, Modifiers, uVirtKey) End Sub
Private Sub Form_Unload(Cancel As Integer) Dim ret As Long '取消Message的截取,使之送往原来的window程序 ret = SetWindowLong(Me.hwnd, GWL_WNDPROC, preWinProc) Call UnregisterHotKey(Me.hwnd, uVirtKey) End Sub
Option ExplicitPrivate Sub Form_KeyDown(KeyCode As Integer, Shift As Integer) If Shift = vbCtrlMask And KeyCode = 68 Then MsgBox "按Ctrl + D" End SubPrivate Sub Form_Load() Me.KeyPreview = True End Sub
好快,幸好给了一个方法下个方法跟射天狼相同 Private Sub Form_KeyDown(KeyCode As Integer, Shift As Integer) ' MsgBox KeyCode & "," & Shift
If KeyCode = 68 And Shift = 2 Then MsgBox "a" End If End Sub
射天狼用此事件可不用 Private Sub Form_Load() Me.KeyPreview = True End Sub
Private Sub FORM_KeyDown (KeyCode As Integer, Shift As Integer) Dim ShiftDown, AltDown, CtrlDown, Txt ShiftDown = (Shift And vbShiftMask) > 0 AltDown = (Shift And vbAltMask) > 0 CtrlDown = (Shift And vbCtrlMask) > 0 If KeyCode = vbKeyF2 Then ' 显示键组合. If ShiftDown And CtrlDown And AltDown Then Txt = "SHIFT+CTRL+ALT+F2." ElseIf ShiftDown And AltDown Then Txt = "SHIFT+ALT+F2." ElseIf ShiftDown And CtrlDown Then Txt = "SHIFT+CTRL+F2." ElseIf CtrlDown And AltDown Then Txt = "CTRL+ALT+F2." ElseIf ShiftDown Then Txt = "SHIFT+F2." ElseIf CtrlDown Then Txt = "CTRL+F2." ElseIf AltDown Then Txt = "ALT+F2." ElseIf SHIFT = 0 Then Txt = "F2." End If Text1.Text = "You pressed " & Txt End If End Sub
给你个简单的1.设窗体的 keypreview=true2. Private Sub Form_KeyDown(KeyCode As Integer, Shift As Integer) Dim i As Long '这是个设 Ctrl + A 的代码 If Shift = 2 Then
If KeyCode = Asc("a") Or KeyCode = Asc("A") Then 你的处理 End If
End If End Sub
form open的时候用api定义,或者用楼上的方法
同意这个 1.设窗体的 keypreview=true2. Private Sub Form_KeyDown(KeyCode As Integer, Shift As Integer) Dim i As Long '这是个设 Ctrl + A 的代码 If Shift = 2 Then
If KeyCode = Asc("a") Or KeyCode = Asc("A") Then 你的处理 End If
不过按钮的快捷键是在它的caption前加个&
这个热键的功能是无论在哪个程序中,只要按下我们定义的这组热键就可以激活某个窗体。这里我们要用到sendmessage这个API函数。程序如下:
Option Explicit
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_SHIFT = &H1 ' shift键
Const HOTKEYF_CONTROL = &H2 'ctrl键
Const HOTKEYF_ALT = &H4 'alt键
Const HOTKEYF_EXT = &H8 '附加键
Private Type tInteger
aint As Integer
End Type
Private Type t2Byte
lByte As Byte
hByte As Byte
End Type
Private ii As tInteger
Private bb As t2Byte
Private Sub Command1_Click()
Dim wParam As Long, I As Long
'设定ctl-shift-T为该window的hotkey
bb.hByte = HOTKEYF_CONTROL Or HOTKEYF_SHIFT
bb.lByte = vbKeyT
LSet ii = bb
wParam = CLng(ii.aint)
I = SendMessage(Me.hwnd, WM_SETHOTKEY, wParam, 0)
If I = 1 Then
Debug.Print “Ctl-Shift-T为hotkey”
Else
If I = 2 Then
Debug.Print “有其他Window也用Ctl-Shift-T作Hotkey”
Else
Debug.Print “指定失败”
End If
End If
End Sub
注: SendMessage()的传回值有以下的意义:
-1 hotkey 设定不对
0 hWnd的指定有错
1 成功,并且没有其他window用相同的hotkey
2 成功,但是有其他window使用相同的hotkey
第二种:定义运行某个程序的热键
在DOS时代,我们常用拦截中断向量的方法来实现热键的功能。现在我们可以用RegisterHotKey这个API函数来定义热键。当热键注册过后,无论我们在哪个程序中按下这组热键,系统会把相关信息传递给等待接收这个信息的窗口,再由这个窗口来处理信息,完成指定功能。所以在接收信息的窗口中还要采用子分类的方法来处理,程序结束时用unRegisterHotKey来取消热键的定义。
RegisterHotKey的参数结构如下:
RegisterHotKey(ByVal hwnd As Long,//接收Hotkey的Window
ByVal idHotKey as Long, // 热键的ID,范围从 0x0000 到 0xBFFF
ByVal Modifiers As Long, // 定义alt shift control等的组合
ByVal uVirtKey As Long // 低端的键值 )
下面我们就来看看具体程序,这个程序的功能是无论在哪个程序中按下ALT-SHIFT-G就执行记事本程序:
'以下程序放在模块中
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
Debug.Print “HotKey Shift-Alt-G Pressed ”
Shell “notepad”, vbNormalFocus
End If
End If
End If
'如果不是热键信息则调用原来的程序
wndproc = CallWindowProc(preWinProc, hwnd, Msg, wParam, lParam)
End Function
'以下程序放在窗体中
Sub Form_Load()
Dim ret As Long
'记录原来的window程序地址
preWinProc = GetWindowLong(Me.hwnd, GWL_WNDPROC)
'用自定义程序代替原来的window程序
ret = SetWindowLong(Me.hwnd, GWL_WNDPROC, AddressOf wndproc)
idHotKey = 1 'in the range &h0000 through &hBFFF
Modifiers = MOD_ALT + MOD_SHIFT
uVirtKey = vbKeyG
'注册热键
ret =RegisterHotKey(Me.hwnd, idHotKey, Modifiers, uVirtKey)
End Sub
Private Sub Form_Unload(Cancel As Integer)
Dim ret As Long
'取消Message的截取,使之送往原来的window程序
ret = SetWindowLong(Me.hwnd, GWL_WNDPROC, preWinProc)
Call UnregisterHotKey(Me.hwnd, uVirtKey)
End Sub
If Shift = vbCtrlMask And KeyCode = 68 Then MsgBox "按Ctrl + D"
End SubPrivate Sub Form_Load()
Me.KeyPreview = True
End Sub
Private Sub Form_KeyDown(KeyCode As Integer, Shift As Integer)
' MsgBox KeyCode & "," & Shift
If KeyCode = 68 And Shift = 2 Then MsgBox "a"
End If
End Sub
Private Sub Form_Load()
Me.KeyPreview = True
End Sub
Dim ShiftDown, AltDown, CtrlDown, Txt
ShiftDown = (Shift And vbShiftMask) > 0
AltDown = (Shift And vbAltMask) > 0
CtrlDown = (Shift And vbCtrlMask) > 0
If KeyCode = vbKeyF2 Then ' 显示键组合.
If ShiftDown And CtrlDown And AltDown Then
Txt = "SHIFT+CTRL+ALT+F2."
ElseIf ShiftDown And AltDown Then
Txt = "SHIFT+ALT+F2."
ElseIf ShiftDown And CtrlDown Then
Txt = "SHIFT+CTRL+F2."
ElseIf CtrlDown And AltDown Then
Txt = "CTRL+ALT+F2."
ElseIf ShiftDown Then
Txt = "SHIFT+F2."
ElseIf CtrlDown Then
Txt = "CTRL+F2."
ElseIf AltDown Then
Txt = "ALT+F2."
ElseIf SHIFT = 0 Then
Txt = "F2."
End If
Text1.Text = "You pressed " & Txt
End If
End Sub
Private Sub Form_KeyDown(KeyCode As Integer, Shift As Integer)
Dim i As Long
'这是个设 Ctrl + A 的代码
If Shift = 2 Then
If KeyCode = Asc("a") Or KeyCode = Asc("A") Then
你的处理
End If
End If
End Sub
1.设窗体的 keypreview=true2.
Private Sub Form_KeyDown(KeyCode As Integer, Shift As Integer)
Dim i As Long
'这是个设 Ctrl + A 的代码
If Shift = 2 Then
If KeyCode = Asc("a") Or KeyCode = Asc("A") Then
你的处理
End If
End If
End Sub