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  • 控件屏蔽鼠标滚动

    '模块中:
    Option Explicit
    Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
    Private 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
    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_MOUSEWHEEL As Long = &H20A
    Private Const GWL_WNDPROC = (-4)
    Private PrevWndProc As Long
    Public Function SubWndProc(ByVal hwnd As Long, ByVal msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
    Select Case msg '在这里进行过滤.如果知道其他的消息,也可以在这里过滤.
    Case WM_MOUSEWHEEL
    SubWndProc = 1 '屏蔽掉bai
    Exit Function
    End Select
    SubWndProc = CallWindowProc(PrevWndProc, hwnd, msg, wParam, lParam) '其它消息不管
    End Function
    Public Sub CallHook(ByVal hwnd As Long)
    PrevWndProc = SetWindowLong(hwnd, GWL_WNDPROC, AddressOf SubWndProc)
    End Sub
    Public Sub CallUnhook(ByVal hwnd As Long)
    Dim lngReturnValue As Long
    lngReturnValue = SetWindowLong(hwnd, GWL_WNDPROC, PrevWndProc)
    End Sub
    '窗体中:
    Private Sub Form_Load()
    Dim i As Integer
    CallHook Combo1.hwnd
    For i = 1 To 10
    Combo1.AddItem i
    Next

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  • 原文地址:https://www.cnblogs.com/rosesmall/p/14242519.html
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