帮我封装WeChat_control 以便实现上述代码

好的，以下是一个可能的`WeChat_control`类的封装实现。该类封装了微信PC客户端API的常用功能，可以方便地实现打开微信、打开聊天窗口、发送消息等操作。请将以下代码保存为一个名为`WeChat_control`的类模块。

Option Explicit

Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWndParent As Long, ByVal hWndChildAfter As Long, ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function SendMessageTimeout Lib "user32" Alias "SendMessageTimeoutA" (ByVal hWnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Any, ByVal fuFlags As Long, ByVal uTimeout As Long, lpdwResult As Long) As Long
Private Declare Function WaitForInputIdle Lib "user32" (ByVal hProcess As Long, ByVal dwMilliseconds As Long) As Long
Private Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long)

Private Const GW_HWNDNEXT = 2
Private Const WM_SETTEXT = &HC
Private Const WM_GETTEXT = &HD
Private Const WM_GETTEXTLENGTH = &HE
Private Const WM_KEYDOWN = &H100
Private Const WM_KEYUP = &H101
Private Const VK_RETURN = &HD

Private m_WeChatPath As String
Private m_WeChatHWnd As Long
Private m_WeChatEditHWnd As Long
Private m_ChatHWnd As Long
Private m_ChatTitle As String

Public Property Let WeChatPath(ByVal value As String)
    m_WeChatPath = value
End Property

Public Sub StartWeChat()
    '启动微信PC客户端
    Dim pid As Long
    pid = Shell(m_WeChatPath, vbNormalFocus)
    
    '等待微信窗口加载完成
    Do While m_WeChatHWnd = 0
        m_WeChatHWnd = FindWindowEx(0&, m_WeChatHWnd, "WeChatMainWndForPC", vbNullString)
        Sleep 100
    Loop
    
    '等待微信进程空闲
    WaitForInputIdle pid, 5000
    
    '获取微信编辑框句柄
    m_WeChatEditHWnd = FindWindowEx(m_WeChatHWnd, 0&, "Edit", vbNullString)
End Sub

Public Sub OpenChatWindow(ByVal title As String)
    '打开聊天窗口
    Dim hwnd As Long
    hwnd = FindWindowEx(m_WeChatHWnd, 0&, "WeChatChatWndForPC", vbNullString)
    Do While hwnd > 0
        If WindowText(hwnd) = title Then
            m_ChatHWnd = hwnd
            m_ChatTitle = title
            Exit Sub
        End If
        hwnd = FindWindowEx(m_WeChatHWnd, hwnd, "WeChatChatWndForPC", vbNullString)
    Loop
    SendMessageTimeout m_WeChatHWnd, &H10, 0&, 0&, 2, 5000, ByVal 0&
    SendMessageTimeout m_WeChatHWnd, &H10, 0&, 0&, 2, 5000, ByVal 0&
    SendMessageTimeout m_WeChatHWnd, &H10, 0&, 0&, 2, 5000, ByVal 0&
    hwnd = FindWindowEx(m_WeChatHWnd, 0&, "WeChatChatWndForPC", vbNullString)
    Do While hwnd > 0
        If WindowText(hwnd) = title Then
            m_ChatHWnd = hwnd
            m_ChatTitle = title
            Exit Sub
        End If
        hwnd = FindWindowEx(m_WeChatHWnd, hwnd, "WeChatChatWndForPC", vbNullString)
    Loop
End Sub

Public Sub SendMessage(ByVal text As String)
    '发送消息
    If m_ChatHWnd = 0 Then Exit Sub
    SendMessageTimeout m_ChatHWnd, WM_SETTEXT, 0&, ByVal text, 2, 5000, ByVal 0&
    SendMessageTimeout m_WeChatEditHWnd, WM_KEYDOWN, VK_RETURN, 0&, 2, 5000, ByVal 0&
    SendMessageTimeout m_WeChatEditHWnd, WM_KEYUP, VK_RETURN, 0&, 2, 5000, ByVal 0&
End Sub

Public Function WindowText(ByVal hwnd As Long) As String
    '获取窗口标题
    Dim len As Long
    len = SendMessageTimeout(hwnd, WM_GETTEXTLENGTH, 0&, ByVal 0&, 2, 5000, ByVal 0&)
    If len > 0 Then
        Dim buf As String
        buf = Space(len + 1)
        SendMessageTimeout hwnd, WM_GETTEXT, len + 1, ByVal buf, 2, 5000, ByVal 0&
        WindowText = Left$(buf, len)
    End If
End Function

使用示例：

Sub main()
    '创建WeChat_control对象
    Dim WeChat As New WeChat_control
    
    '设置微信PC客户端路径
    WeChat.WeChatPath = "E:\WeChat\WeChat.exe"
    
    '启动微信PC客户端
    WeChat.StartWeChat
    
    '等待微信窗口加载完成（可根据需要设置等待时间）
    Sleep 5000
    
    '打开目标窗口
    WeChat.OpenChatWindow "文件传输助手"
    
    '向目标窗口发送消息
    WeChat.SendMessage "负胜已分"
End Sub