区分vb.net中的对象子类型 [英] Distinguishing between object subtypes in vb.net

问题描述

大家好，

我需要能够让我的应用程序区分对象子类型，以便我可以使用System.Speech.Synthesis来说出文本不同的属性取决于鼠标与哪种控件进行交互。  例如，我的应用程序
有一个MenuStrip，两个ToolStrips和一个StatusStrip控件。  我知道我可以使用这样的代码： 

 Public Sub SetToolbarStatus（ByVal senderComponent As Component，ByVal strMessage As String）
如果不是mControlLookup.Contains（senderComponent）那么
 mControlLookup.Add（senderComponent，strMessage）
 Dim pToolStripItem As ToolStripItem = CType（senderComponent，ToolStripItem）
如果pToolStripItem IsNot Nothing那么
 AddHandler pToolStripItem.MouseMove，AddressOf Handle_ToolSelect 
 AddHandler pToolStripItem.MouseLeave，AddressOf Handle_ToolLeave 
 AddHandler pToolStripItem.MouseEnter，AddressOf Handle_ToolEnter 
 Else 
 mControlLookup（senderComponent）= strMessage 
 End If 
 Else 
 mControlLookup（senderComponent）= strMessage 
 End if 
 End Sub 

将属性添加到所有三种类型控件，但如何使鼠标与ToolStripMenuItem或ToolStripStatusLabel交互时，扬声器的提示设置为Text属性，但如果是常规ToolStrip，则提示
到项目的而不是ToolTipText属性？我的工具条在按钮和DropDownButtons上有图像，没有显示文本，所以我看不需要在它们上设置Text属性。

谢谢，

Jason

解决方案

您好

你可以考虑使用各种控件的Tag属性。 ToolStrip的所有子类型都具有这样的属性，您的语音代码可以轻松地从任何控件获取Tag属性，并且可能省去必须区分控制位置
（Form，ToolStrip等）

Hi all,

I need to be able to get my application to distinguish between object subtypes so that I can use System.Speech.Synthesis to speak the text of a different property depending on what kind of control the mouse is interacting with.  For example, my application has a MenuStrip, two ToolStrips, and a StatusStrip control.  I know that I can use code like this: 

 Public Sub SetToolbarStatus(ByVal senderComponent As Component, ByVal strMessage As String)
        If Not mControlLookup.Contains(senderComponent) Then
            mControlLookup.Add(senderComponent, strMessage)
            Dim pToolStripItem As ToolStripItem = CType(senderComponent, ToolStripItem)
            If pToolStripItem IsNot Nothing Then
                AddHandler pToolStripItem.MouseMove, AddressOf Handle_ToolSelect
                AddHandler pToolStripItem.MouseLeave, AddressOf Handle_ToolLeave
                AddHandler pToolStripItem.MouseEnter, AddressOf Handle_ToolEnter
            Else
                mControlLookup(senderComponent) = strMessage
            End If
        Else
            mControlLookup(senderComponent) = strMessage
        End If
    End Sub

to add a property to all three types of controls, but how do I make it so that if the mouse interacts with a ToolStripMenuItem or a ToolStripStatusLabel the speaker's prompt is set to the Text property, but if it's a regular ToolStrip, the prompt is set to the item's ToolTipText property instead? My Toolstrips have images on the Buttons and DropDownButtons with no displayed text so I saw no need to set the Text property on them .

Thanks,

Jason

解决方案

Hi

You could consider using the Tag property of the various controls. All the subtypes of a ToolStrip have such a property, and your speech code could easily get the Tag property from any control and perhaps saving on having to differentiate the control location (Form, ToolStrip etc)

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