ContextMenuStrip.SourceControl 속성

정의

네임스페이스:

System.Windows.Forms

어셈블리:

System.Windows.Forms.dll

Source:

ContextMenuStrip.cs

이를 ContextMenuStrip 표시한 마지막 컨트롤을 가져옵니다.

public:
 property System::Windows::Forms::Control ^ SourceControl { System::Windows::Forms::Control ^ get(); };

[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.Control? SourceControl { get; }

[<System.ComponentModel.Browsable(false)>]
member this.SourceControl : System.Windows.Forms.Control

Public ReadOnly Property SourceControl As Control

속성 값

Control

이를 ContextMenuStrip 표시한 컨트롤입니다.

특성

BrowsableAttribute

예제

다음 코드 예제에서는 이벤트를 다시 사용하고 처리하는 Opening 동적 SourceControl 결정을 보여 줍니다. 이 예제는 클래스에 제공된 더 큰 예제의 ContextMenuStrip 일부입니다.

// This event handler is invoked when the ContextMenuStrip
// control's Opening event is raised. It demonstrates
// dynamic item addition and dynamic SourceControl 
// determination with reuse.
void cms_Opening(object sender, System.ComponentModel.CancelEventArgs e)
{
    // Acquire references to the owning control and item.
    Control c = fruitContextMenuStrip.SourceControl as Control;
    ToolStripDropDownItem tsi = fruitContextMenuStrip.OwnerItem as ToolStripDropDownItem;

    // Clear the ContextMenuStrip control's Items collection.
    fruitContextMenuStrip.Items.Clear();

    // Check the source control first.
    if (c != null)
    {
        // Add custom item (Form)
        fruitContextMenuStrip.Items.Add("Source: " + c.GetType().ToString());
    }
    else if (tsi != null)
    {
        // Add custom item (ToolStripDropDownButton or ToolStripMenuItem)
        fruitContextMenuStrip.Items.Add("Source: " + tsi.GetType().ToString());
    }

    // Populate the ContextMenuStrip control with its default items.
    fruitContextMenuStrip.Items.Add("-");
    fruitContextMenuStrip.Items.Add("Apples");
    fruitContextMenuStrip.Items.Add("Oranges");
    fruitContextMenuStrip.Items.Add("Pears");

    // Set Cancel to false. 
    // It is optimized to true based on empty entry.
    e.Cancel = false;
}

' This event handler is invoked when the ContextMenuStrip
' control's Opening event is raised. It demonstrates
' dynamic item addition and dynamic SourceControl 
' determination with reuse.
 Sub cms_Opening(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs)

     ' Acquire references to the owning control and item.
     Dim c As Control = fruitContextMenuStrip.SourceControl
     Dim tsi As ToolStripDropDownItem = fruitContextMenuStrip.OwnerItem 

     ' Clear the ContextMenuStrip control's 
     ' Items collection.
     fruitContextMenuStrip.Items.Clear()

     ' Check the source control first.
     If (c IsNot Nothing) Then
         ' Add custom item (Form)
         fruitContextMenuStrip.Items.Add(("Source: " + c.GetType().ToString()))
     ElseIf (tsi IsNot Nothing) Then
         ' Add custom item (ToolStripDropDownButton or ToolStripMenuItem)
         fruitContextMenuStrip.Items.Add(("Source: " + tsi.GetType().ToString()))
     End If

     ' Populate the ContextMenuStrip control with its default items.
     fruitContextMenuStrip.Items.Add("-")
     fruitContextMenuStrip.Items.Add("Apples")
     fruitContextMenuStrip.Items.Add("Oranges")
     fruitContextMenuStrip.Items.Add("Pears")

     ' Set Cancel to false. 
     ' It is optimized to true based on empty entry.
     e.Cancel = False
 End Sub

설명

속성의 일반적인 용도는 SourceControl 다음과 같습니다.

• 이벤트 중에 Opening 메뉴 항목을 추가, 제거, 사용 또는 사용하지 않도록 설정합니다.

• 마지막으로 표시한 컨트롤에 따라 선택한 명령의 수정을 결정합니다 ContextMenuStrip.