捕获鼠标在标题栏的消息.bas

个人VB学习源码精选,自己学习时的一些编程小程序,希望对大家有帮助

Attribute VB_Name = "Module1"
Option Explicit

Public Const GWL_WNDPROC = (-4)

Public Const WM_NCHITTEST = &H84
Public Const WM_NCMOUSEMOVE = &HA0
Public Const WM_NCLBUTTONDBLCLK = &HA3
Public Const WM_NCLBUTTONDOWN = &HA1
Public Const WM_NCLBUTTONUP = &HA2
Public Const WM_NCMBUTTONDBLCLK = &HA9
Public Const WM_NCMBUTTONDOWN = &HA7
Public Const WM_NCMBUTTONUP = &HA8
Public Const WM_NCRBUTTONDBLCLK = &HA6
Public Const WM_NCRBUTTONDOWN = &HA4
Public Const WM_NCRBUTTONUP = &HA5

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 GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long) As Long
Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long

Public prevWndProc As Long

Function WndProc(ByVal hWnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
    Dim MsgList
    Dim sMsg As String
    
    MsgList = Array(WM_NCMOUSEMOVE, WM_NCLBUTTONDOWN, WM_NCLBUTTONUP, WM_NCLBUTTONDBLCLK, _
                    WM_NCMBUTTONDOWN, WM_NCMBUTTONUP, WM_NCMBUTTONDBLCLK, WM_NCRBUTTONDOWN, WM_NCRBUTTONUP, WM_NCRBUTTONDBLCLK)
    
    If IsInMsgList(MsgList, Msg) Then
        sMsg = LoadResString(Msg)
        Form1.List1.AddItem sMsg
        Form1.List1.TopIndex = Form1.List1.NewIndex
    End If
    
    WndProc = CallWindowProc(prevWndProc, hWnd, Msg, wParam, lParam)
End Function

Function IsInMsgList(MsgList, ByVal Msg As Long)
    Dim i As Integer
    
    IsInMsgList = False
    For i = 0 To UBound(MsgList)
        If Msg = MsgList(i) Then
            IsInMsgList = True
            Exit For
        End If
    Next
End Function