Menu.GetMainMenu Method

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets the MainMenu that contains this menu.

public:
 System::Windows::Forms::MainMenu ^ GetMainMenu();

public System.Windows.Forms.MainMenu GetMainMenu ();

member this.GetMainMenu : unit -> System.Windows.Forms.MainMenu

Public Function GetMainMenu () As MainMenu

Returns

MainMenu

The MainMenu that contains this menu.

Examples

This example declares a MainMenu, mainMenu1, and four menu items, menuItem1, menuItem2, menuItem3, and menuItem4. Only the first three menu items are added to mainMenu1 for display. The program then checks to see if menuItem3 is being used, which is true, and determines the form in which it is used. A label text is used to display the name of the form that hosts the MainMenu. If you change the menu item being tested to menuItem4, the condition evaluates to false because menuItem4 has never been used. This example requires that you have created a Form named MyForm that includes a Label named label1.

private:
   void InitializeMyMainMenu()
   {
      // Create the MainMenu and the menu items to add.
      MainMenu^ mainMenu1 = gcnew MainMenu;
      MenuItem^ menuItem1 = gcnew MenuItem;
      MenuItem^ menuItem2 = gcnew MenuItem;
      MenuItem^ menuItem3 = gcnew MenuItem;
      MenuItem^ menuItem4 = gcnew MenuItem;

      // Set the caption for the menu items.
      menuItem1->Text = "File";
      menuItem2->Text = "Edit";
      menuItem3->Text = "View";

      // Add 3 menu items to the MainMenu for displaying.
      mainMenu1->MenuItems->Add( menuItem1 );
      mainMenu1->MenuItems->Add( menuItem2 );
      mainMenu1->MenuItems->Add( menuItem3 );

      // Assign mainMenu1 to the form.
      Menu = mainMenu1;

      // Determine whether menuItem3 is currently being used.
      if ( menuItem3->GetMainMenu() != nullptr )

      // Display the name of the form in which it is located.
      label1->Text = menuItem3->GetMainMenu()->GetForm()->ToString();
   }

private void InitializeMyMainMenu()
{
    // Create the MainMenu and the menu items to add.
    MainMenu mainMenu1 = new MainMenu();

    MenuItem menuItem1 = new MenuItem();
    MenuItem menuItem2 = new MenuItem();
    MenuItem menuItem3 = new MenuItem();
    MenuItem menuItem4 = new MenuItem();

    // Set the caption for the menu items.
    menuItem1.Text = "File";
    menuItem2.Text = "Edit";
    menuItem3.Text = "View";

    // Add 3 menu items to the MainMenu for displaying.
    mainMenu1.MenuItems.Add(menuItem1);
    mainMenu1.MenuItems.Add(menuItem2);
    mainMenu1.MenuItems.Add(menuItem3);

    // Assign mainMenu1 to the form.
    Menu = mainMenu1;

    // Determine whether menuItem3 is currently being used.
    if(menuItem3.GetMainMenu() != null)
        // Display the name of the form in which it is located.
        label1.Text= menuItem3.GetMainMenu().GetForm().ToString();
}

Private Sub InitializeMyMainMenu()
    ' Create the MainMenu and the menu items to add.
    Dim mainMenu1 As New MainMenu()

    Dim menuItem1 As New MenuItem()
    Dim menuItem2 As New MenuItem()
    Dim menuItem3 As New MenuItem()
    Dim menuItem4 As New MenuItem()


    ' Set the caption for the menu items.
    menuItem1.Text = "File"
    menuItem2.Text = "Edit"
    menuItem3.Text = "View"

    ' Add 3 menu items to the MainMenu for displaying.
    mainMenu1.MenuItems.Add(menuItem1)
    mainMenu1.MenuItems.Add(menuItem2)
    mainMenu1.MenuItems.Add(menuItem3)

    ' Assign mainMenu1 to the form.
    Menu = mainMenu1

    ' Determine whether menuItem3 is currently being used.
    If (menuItem3.GetMainMenu() IsNot Nothing) Then
        ' Display the name of the form in which it is located.
        Label1.Text = menuItem3.GetMainMenu().GetForm().ToString()
    End If
End Sub

Remarks

This method allows you to obtain a reference to the MainMenu this menu is currently located in. This property returns null if the menu is not contained in a MainMenu. This can occur if the menu is contained in a MenuItem or ContextMenu, or if the menu is not contained in any menu. You can use this property to determine whether a menu is currently being used, and also to determine where.

Applies to

Jaa