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'从存储器中加载属性值
Private Sub UserControl_ReadProperties(PropBag As PropertyBag)
m_ButtonText = PropBag.ReadProperty (“ButtonText", m_def_ButtonText)
m_Exec = PropBag.ReadProperty(“Exec",
m_def_Exec)
m_HotIcon = PropBag.ReadProperty(“HotIcon",
m_def_HotIcon)
m_Icon = PropBag.ReadProperty(“Icon",
m_def_Icon)
m_MenuText = PropBag.ReadProperty (“MenuText",m_def_MenuText)
m_MenuStatusBar =PropBag.ReadProperty (“MenuStatusBar", m_def_MenuStatusBar)
m_GUID =PropBag.ReadProperty(“GUID",
m_def_GUID)
End Sub
Private Sub UserControl_Resize()
UserControl.Width = 540
UserControl.Height = 540
Image1.Move 0, 0, ScaleWidth, ScaleHeight
End Sub
'将属性值写到存储器
Private Sub UserControl_WriteProperties(PropBag As PropertyBag)
Call PropBag.WriteProperty(“ButtonText", m_ButtonText, m_def_ButtonText)
Call PropBag.WriteProperty(“Exec", m_Exec, m_def_Exec)
Call PropBag.WriteProperty(“HotIcon", m_HotIcon, m_def_HotIcon)
Call PropBag.WriteProperty(“Icon", m_Icon, m_def_Icon)
Call PropBag.WriteProperty(“MenuText", m_MenuText, m_def_MenuText)
Call PropBag.WriteProperty(“MenuStatusBar", m_MenuStatusBar, m_def_MenuStatusBar)
Call PropBag.WriteProperty(“GUID"，m_GUID, m_def_GUID)
End Sub
’获取按钮文本
Public Property Get ButtonText() As String
ButtonText = m_ButtonText
End Property
’设置按钮文本
Public Property Let ButtonText(ByVal New_ButtonText As String)
m_ButtonText = New_ButtonText
PropertyChanged “ButtonText"
End Property
’获取当前按钮执行目标
Public Property Get Exec() As String
Exec = m_Exec
End Property
’设置当前按钮执行目标
Public Property Let Exec(ByVal New_Exec As String)
m_Exec = New_Exec
PropertyChanged “Exec"
End Property
’获取鼠标移上按钮时显示的图标
Public Property Get HotIcon() As String
HotIcon = m_HotIcon
End Property
’设置鼠标移上按钮时显示的图标
Public Property Let HotIcon(ByVal New_HotIcon As String)
m_HotIcon = New_HotIcon
PropertyChanged “HotIcon"
End Property
’获取按钮正常显示的图标
Public Property Get Icon() As String
Icon = m_Icon
End Property
’设置按钮正常显示的图标
Public Property Let Icon(ByVal New_Icon As String)
m_Icon = New_Icon
PropertyChanged “Icon"
End Property
’获取菜单项显示文本
Public Property Get MenuText() As String
MenuText = m_MenuText
End Property
’设置菜单项显示文本
Public Property Let MenuText(ByVal New_MenuText As String)
m_MenuText = New_MenuText
PropertyChanged “MenuText"
End Property
’获取菜单项注释文本
Public Property Get MenuStatusBar() As String
MenuStatusBar = m_MenuStatusBar
End Property
’设置菜单项注释文本
Public Property Let MenuStatusBar(ByValNew_Menu StatusBar As String)
m_MenuStatusBar = New_MenuStatusBar
PropertyChanged “MenuStatusBar"
End Property
Public Property Get GUID() As String
GUID = m_GUID
End Property
Public Property Let GUID(ByVal New_GUID As String)
m_GUID = New_GUID
PropertyChanged “GUID"
End Property
’显示“关于”对话框
Public Sub ShowAboutBox()
frmAbout.Show vbModal
Unload frmAbout
Set frmAbout = Nothing
End Sub
该控件提供了 7 个属性和2 个方法。
控件的属性：
GUID：一个在注册表唯一标识应用软件的数字序列，共36位；
ButtonText：按钮上显示的文本；
Exec：按钮执行的目标，为可执行文件或超文本链接等；
HotIcon：鼠标移上按钮时显示的图标，取自 EXE 文件或 DLL 文件；
Icon：按钮正常显示的图标，取自 EXE 文件或 DLL 文件；
MenuText：在 IE “工具”菜单中显示的菜单项；
MenuStatusBar：IE“工具”菜单项的解释，显示在底部的状态条上。
控件的方法：
AddBtn2IEtoolbar：添加自定义按钮；
DelBtnFromIEtoolbar：删除自定义按钮。
使用方法(以VB为例)
在 VB 中，首先将该用户控件加入“部件”列表中，然后把该控件从“工具箱”拖放到 EXE 工程窗体上，再在窗体上放两个命令按钮，命名为 cmdADD 和 cmdDel，键入以下代码：
Option Explicit
'该 GUID 号码用特殊工具产生
Const theGUID = “{3FA4FB86－E43A－11D4－B3DD－00E006E25C0B}"
Private Sub cmdAdd_Click() '添加按钮
AddButton1.Guid = theGUID
AddButton1.ButtonText = “控件"
AddButton1.Exec = “http://why100000.at. china.com"
AddButton1.HotIcon = “C:\Add2IE Toolbar\Add2IEToolbar.exe,101"
AddButton1.Icon = “C:\Add2IE Toolbar\Add2IEToolbar.exe,102"
AddButton1.MenuText = “测试控件"
AddButton1.MenuStatusBar = “测试我制作的 ActiveX 控件"
AddButton1.AddBtn2IEtoolbar '执行
End Sub
Private Sub cmdDel_Click() '删除按钮
AddButton1.Guid = theGUID
AddButton1.DelBtnFromIEtoolbar
End Sub
以上代码中，GUID 号可以用 VC＋＋ 6.0 提供的 GUID 生成器工具产生。方法是：运行 VC＋＋ 6.0，打开一个工程，在“Project\Add to Project\Components and Controls\Visual C＋＋ Components\GUID Generator”中，按“Insert”按钮，确定后，先选第 4 项“Registry Format”，再按“Copy”按钮，GUID 生成器就将一个新产生的 GUID 号拷贝到了剪贴板上。
按钮的图标包含在 C:\Add2IE Toolbar\Add2IEToolbar.exe 文件中，101 和 102 是它们的顺序号。按 cmdAdd 按钮，然后打开 IE 浏览器，就会看到 IE 工具条上添加的自定义按钮了。
作者：张庆
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