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ToolBar.ButtonDropDown Event

Occurs when a drop-down style ToolBarButton or its down arrow is clicked.

[Visual Basic]
Public Event ButtonDropDown As ToolBarButtonClickEventHandler
[C#]
public event ToolBarButtonClickEventHandler ButtonDropDown;
[C++]
public: __event ToolBarButtonClickEventHandler* ButtonDropDown;

[JScript] In JScript, you can handle the events defined by a class, but you cannot define your own.

Event Data

The event handler receives an argument of type ToolBarButtonClickEventArgs containing data related to this event. The following ToolBarButtonClickEventArgs property provides information specific to this event.

Property Description
Button Gets or sets the ToolBarButton that was clicked.

Remarks

For more information about handling events, see Consuming Events.

Example

[Visual Basic, C#, C++] The following example creates a ToolBar control, sets some of its common properties, and adds it to a Form. Delegates are also added to the ButtonClick and ButtonDropDown events. This example assumes a ToolBar named toolBar1 and an ImageList named imageList1 have been declared.

[Visual Basic] 
Private Sub AddToolBar()
   ' Add a toolbar and set some of its properties.
   toolBar1 = New ToolBar()
   toolBar1.Appearance = System.Windows.Forms.ToolBarAppearance.Flat
   toolBar1.BorderStyle = System.Windows.Forms.BorderStyle.None
   toolBar1.Buttons.Add(Me.toolBarButton1)
   toolBar1.ButtonSize = New System.Drawing.Size(24, 24)
   toolBar1.Divider = True
   toolBar1.DropDownArrows = True
   toolBar1.ImageList = Me.imageList1
   toolBar1.ShowToolTips = True
   toolBar1.Size = New System.Drawing.Size(292, 25)
   toolBar1.TabIndex = 0
   toolBar1.TextAlign = System.Windows.Forms.ToolBarTextAlign.Right
   toolBar1.Wrappable = False

   ' Add handlers for the ButtonClick and ButtonDropDown events.
   AddHandler toolBar1.ButtonDropDown, AddressOf toolBar1_ButtonDropDown
   AddHandler toolBar1.ButtonClick, AddressOf toolBar1_ButtonClicked

   ' Add the toolbar to the form.
   Me.Controls.Add(toolBar1)
End Sub

[C#] 
private void AddToolBar()
{
   // Add a toolbar and set some of its properties.
   toolBar1 = new ToolBar();
   toolBar1.Appearance = System.Windows.Forms.ToolBarAppearance.Flat;
   toolBar1.BorderStyle = System.Windows.Forms.BorderStyle.None;
   toolBar1.Buttons.Add(this.toolBarButton1);
   toolBar1.ButtonSize = new System.Drawing.Size(24, 24);
   toolBar1.Divider = true;
   toolBar1.DropDownArrows = true;
   toolBar1.ImageList = this.imageList1;
   toolBar1.ShowToolTips = true;
   toolBar1.Size = new System.Drawing.Size(292, 25);
   toolBar1.TabIndex = 0;
   toolBar1.TextAlign = System.Windows.Forms.ToolBarTextAlign.Right;
   toolBar1.Wrappable = false;
   
   // Add handlers for the ButtonClick and ButtonDropDown events.
   toolBar1.ButtonDropDown += 
     new ToolBarButtonClickEventHandler(toolBar1_ButtonDropDown);
   toolBar1.ButtonClick += 
     new ToolBarButtonClickEventHandler(toolBar1_ButtonClicked);

   // Add the toolbar to the form.
   this.Controls.Add(toolBar1);
}

[C++] 
private:
    void AddToolBar() {
        // Add a toolbar and set some of its properties.
        toolBar1 = new ToolBar();
        toolBar1->Appearance = System::Windows::Forms::ToolBarAppearance::Flat;
        toolBar1->BorderStyle = System::Windows::Forms::BorderStyle::None;
        toolBar1->Buttons->Add(this->toolBarButton1);
        toolBar1->ButtonSize = System::Drawing::Size(24, 24);
        toolBar1->Divider = true;
        toolBar1->DropDownArrows = true;
        toolBar1->ImageList = this->imageList1;
        toolBar1->ShowToolTips = true;
        toolBar1->Size = System::Drawing::Size(292, 25);
        toolBar1->TabIndex = 0;
        toolBar1->TextAlign = System::Windows::Forms::ToolBarTextAlign::Right;
        toolBar1->Wrappable = false;

        // Add handlers for the ButtonClick and ButtonDropDown events.
        toolBar1->ButtonDropDown += new ToolBarButtonClickEventHandler(this, &MyToolBar::toolBar1_ButtonDropDown);
        toolBar1->ButtonClick += new ToolBarButtonClickEventHandler(this, &MyToolBar::toolBar1_ButtonClicked);

        // Add the toolbar to the form.
        this->Controls->Add(toolBar1);
    }

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

ToolBar Class | ToolBar Members | System.Windows.Forms Namespace | ToolBarButton | ToolBarAppearance

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