FileCodeModel2.CodeElementFromPoint 方法 (TextPoint, vsCMElement)

發行項
08/12/2011

傳回原始程式檔中特定位置上的程式碼項目。

命名空間： EnvDTE80
組件： EnvDTE80 (在 EnvDTE80.dll 中)

語法

'宣告
Function CodeElementFromPoint ( _
    Point As TextPoint, _
    Scope As vsCMElement _
) As CodeElement

CodeElement CodeElementFromPoint(
    TextPoint Point,
    vsCMElement Scope
)

CodeElement^ CodeElementFromPoint(
    TextPoint^ Point, 
    vsCMElement Scope
)

abstract CodeElementFromPoint : 
        Point:TextPoint * 
        Scope:vsCMElement -> CodeElement

function CodeElementFromPoint(
    Point : TextPoint, 
    Scope : vsCMElement
) : CodeElement

參數

Point
型別：EnvDTE.TextPoint
必要項。TextPoint 物件，表示您要放置程式碼項目的編輯器位置。

Scope
型別：EnvDTE.vsCMElement
必要項。vsCMElement 值，表示指定之型別的程式碼項目，項目中含有編輯器位置。

傳回值

型別：EnvDTE.CodeElement
CodeElement 物件。

實作

FileCodeModel.CodeElementFromPoint(TextPoint, vsCMElement)

備註

CodeElementFromPoint 會依據內含項目的指定範圍或更細微範圍，傳回與 TextPoint 關聯的程式碼項目。如果指定型別的程式碼項目沒有包含編輯器位置，那麼 CodeElementFromPoint 將會失敗。

範例

Sub CodeElementFromPointExample(ByVal dte As DTE2)

    ' Before running this example, open a code document from a project
    ' and place the insertion point anywhere inside the source code.
    Dim sel As TextSelection = _
        CType(dte.ActiveDocument.Selection, TextSelection)
    Dim pnt As TextPoint = CType(sel.ActivePoint, TextPoint)

    ' Discover every code element containing the insertion point.
    Dim fcm As FileCodeModel = _
        dte.ActiveDocument.ProjectItem.FileCodeModel
    Dim elems As String
    Dim elem As CodeElement
    Dim scope As vsCMElement
    For Each scope In [Enum].GetValues(scope.GetType())
        Try
            elem = fcm.CodeElementFromPoint(pnt, scope)
            elems &= elem.Name & " (" & scope.ToString() & ")" & vbCrLf
       Catch ex As Exception
            ‘don’t do anything -
            ‘this is expected when no code elements are in scope
       End Try
    Next
    MsgBox("The following elements contain the insertion point:" _
            & vbCrLf & vbCrLf & elems)
End Sub

public void CodeElementFromPointExample(DTE2 dte)
{
    // Before running this example, open a code document from a project
    // and place the insertion point anywhere inside the source code.
    TextSelection sel = 
        (TextSelection)dte.ActiveDocument.Selection;
    TextPoint pnt = (TextPoint)sel.ActivePoint;
    // Discover every code element containing the insertion point.
    FileCodeModel fcm = 
    dte.ActiveDocument.ProjectItem.FileCodeModel;
    string elems = "";
    vsCMElement scopes = 0;
    foreach (vsCMElement scope in Enum.GetValues(scopes.GetType()))
    {
        try
        {
            CodeElement elem = fcm.CodeElementFromPoint(pnt, scope);
            elems += elem.Name + " (" + scope.ToString() + ")\n";
        }
        catch (COMException ex)
        {
            //don’t do anything – this is expected if there is 
            //no code element in the scope
        }
    }
    MessageBox.Show(
        "The following elements contain the insertion point:\n\n" + 
        elems);
}