第四步：编写代码。
Dim m_MSG As New MessengerAPI.Messenger 'MSN的Com对象
Dim m_Groups As MessengerAPI.IMessengerGroups 'MSN中的分组
Dim m_Group As MessengerAPI.IMessengerGroup 'MSN中组的内容
Dim m_Contracts As MessengerAPI.IMessengerContacts 'MSN中的所有的好友的信息
Dim m_Contract As MessengerAPI.IMessengerContact 'MSN中每个好友对象的内容
Private Sub Command1_Click()
Dim i As Integer
'检测需要发送的信息是否合法
If Trim(Text1.Text) = "" Then
MsgBox "发送的信息不能为空!", vbInformation, "提示"
Text1.SetFocus
Exit Sub
End If
'判断消息的发送对象是全部好友还是某个组的成员
If Combo1.ListIndex = 0 Then
Set m_Contracts = m_MSG.MyContacts
Else
Set m_Groups = m_MSG.MyGroups
Set m_Group = m_Groups.Item(Combo1.ListIndex - 1)
Set m_Contracts = m_Group.Contacts
End If
'遍历要发送的对象,发送信息
For i = 0 To m_Contracts.Count - 1
Set m_Contract = m_Contracts.Item(i)
If Check1.Value = 1 Then
If m_Contract.Status = 2 Then
m_MSG.InstantMessage m_Contract '打开要发送的好友窗体
DoEvents
SendKeys Text1.Text '写入信息
DoEvents
SendKeys "{enter}" '发送出信息
DoEvents
SendKeys "%{F4}" '关闭好友窗口
End If
Else
m_MSG.InstantMessage m_Contract
DoEvents
SendKeys Text1.Text
DoEvents
SendKeys "{enter}"
DoEvents
SendKeys "%{F4}"
End If
Next i
'成功发送完毕信息
If MsgBox("发送完毕!是否清空消息?", vbInformation + vbYesNo, "提示") = vbYes Then
Text1.Text = ""
Text1.SetFocus
Else
Text1.SetFocus
End If
End Sub
Private Sub Command2_Click()
Unload Me
End
End Sub
'初始化控件
Private Sub Form_Load()
Dim i As Integer
'初始化发送对象的下拉框
Set m_Groups = m_MSG.MyGroups
With Combo1
.AddItem "全部的组"
For i = 0 To m_Groups.Count - 1
Set m_Group = m_Groups.Item(i)
.AddItem m_Group.Name
Next i
.ListIndex = 0
End With
End Sub
'释放变量
Private Sub Form_Unload(Cancel As Integer)
Set m_MSG = Nothing
Set m_Groups = Nothing
Set m_Group = Nothing
Set m_Contracts = Nothing
Set m_Contract = Nothing
End Sub
第五步：编译运行。选择“文件”菜单的生成“工程1.exe”菜单项，一个属于你的MSN信息群发软件就完成了。运行这个exe界面如下：
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