是这样的,我做了一个类似于列表框的用户控件,当点击下拉箭头时,会出现一个"列表"这个列表是另一个窗体.现在的问题是: 当我把这个列表控件放到我的程序中,把下拉列表打开以后,如果此时不点击不用他,而是去点我程序中其他的控件,请问这个列表怎么把他关掉?---
另:我还做了一个类似按钮的控件,怎么才能让他支持焦点?就是出现那个小虚框框!
另:我还做了一个类似按钮的控件,怎么才能让他支持焦点?就是出现那个小虚框框!
解决方案 »
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Option ExplicitDeclare 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 Public Const GWL_WNDPROC = (-4)
Public Const WM_ACTIVATE = &H6
Public Const WA_ACTIVE = 1
Public Const WA_CLICKACTIVE = 2
Public Const WA_INACTIVE = 0
Public preWinProc As Long Public Function wndproc(ByVal hwnd As Long, ByVal Msg As Long, _
ByVal wParam As Long, ByVal lParam As Long) As Long
Dim fActive As Integer
If Msg = WM_ACTIVATE Then
'取得wParam的LowWord
fActive = CInt(wParam And &HFFFF)
If fActive = WA_INACTIVE Then
Debug.Print "InActive "
Else
Debug.Print "Active"
End If
End If
'将之送往原来的Window Procedure
wndproc = CallWindowProc(preWinProc, hwnd, Msg, wParam, lParam)
End Function'以下在form
Option Explicit
Private Sub Form_Activate()
Debug.Print "Event Activate"
End Sub Private Sub Form_Deactivate()
Debug.Print "Event DeActivate"
End Sub Private Sub Form_Load()
Dim ret As Long
'记录原本的Window Procedure的位址
preWinProc = GetWindowLong(Me.hwnd, GWL_WNDPROC)
'设定Combo1的window Procedure到wndproc
ret = SetWindowLong(Me.hwnd, GWL_WNDPROC, AddressOf wndproc)
End Sub Private Sub Form_Unload(Cancel As Integer)
Dim ret As Long
'取消Message的截取,而使之又只送往原来的Window Procedure
ret = SetWindowLong(Me.hwnd, GWL_WNDPROC, preWinProc)
End Sub
当点其他控件的时候,就触发你的控件的lostfocus,这样你怎么处理都行了