ToolStripDropDownButton 构造函数

参考

定义

命名空间:: System.Windows.Forms

程序集:: System.Windows.Forms.dll

重要

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重载

ToolStripDropDownButton()	初始化 ToolStripDropDownButton 类的新实例。
ToolStripDropDownButton(Image)	初始化 ToolStripDropDownButton 类的新实例，使之显示指定的图像。
ToolStripDropDownButton(String)	初始化 ToolStripDropDownButton 类的新实例，使之显示指定的文本。
ToolStripDropDownButton(String, Image)	初始化 ToolStripDropDownButton 类的新实例，使之显示指定的文本和图像。
ToolStripDropDownButton(String, Image, EventHandler)	初始化 ToolStripDropDownButton 类的新实例，使之显示指定的文本和图像并引发 `Click` 事件。
ToolStripDropDownButton(String, Image, ToolStripItem[])	初始化 ToolStripDropDownButton 类的新实例。
ToolStripDropDownButton(String, Image, EventHandler, String)	初始化 ToolStripDropDownButton 类的新实例，使之具有指定的名称，显示指定的文本和图像，并引发 `Click` 事件。

ToolStripDropDownButton()

初始化 ToolStripDropDownButton 类的新实例。

public:
 ToolStripDropDownButton();

public ToolStripDropDownButton ();

Public Sub New ()

示例

下面的代码示例创建并初始化控件 ToolStripDropDownButton 。

// Declare the drop-down button and the items it will contain.
ToolStripDropDownButton^ dropDownButton1;
ToolStripDropDown^ dropDown;
ToolStripButton^ buttonRed;
ToolStripButton^ buttonBlue;
ToolStripButton^ buttonYellow;

void InitializeDropDownButton()
{
    dropDownButton1 = gcnew ToolStripDropDownButton;
    dropDown = gcnew ToolStripDropDown;
    dropDownButton1->Text = "A";

    // Set the drop-down on the DropDownButton.
    dropDownButton1->DropDown = dropDown;

    // Declare three buttons, set their forecolor and text, 
    // and add the buttons to the drop-down.
    buttonRed = gcnew ToolStripButton;
    buttonRed->ForeColor = Color::Red;
    buttonRed->Text = "A";
    buttonBlue = gcnew ToolStripButton;
    buttonBlue->ForeColor = Color::Blue;
    buttonBlue->Text = "A";
    buttonYellow = gcnew ToolStripButton;
    buttonYellow->ForeColor = Color::Yellow;
    buttonYellow->Text = "A";
    buttonBlue->Click += gcnew EventHandler(this, 
        &Form1::colorButtonsClick);
    buttonRed->Click += gcnew EventHandler(this, 
        &Form1::colorButtonsClick);
    buttonYellow->Click += gcnew EventHandler(this, 
        &Form1::colorButtonsClick);
    array<ToolStripItem^>^ ToolStrips = 
        {buttonRed,buttonBlue,buttonYellow};
    dropDown->Items->AddRange(ToolStrips);
    toolStrip1->Items->Add(dropDownButton1);
}


// Handle the buttons' click event by setting the forecolor 
// of the form to the forecolor of the button that is clicked.
void colorButtonsClick(Object^ sender, EventArgs^ e)
{
    ToolStripButton^ senderButton = (ToolStripButton^) sender;
    this->ForeColor = senderButton->ForeColor;
}


//  internal:

// Declare the drop-down button and the items it will contain.
internal ToolStripDropDownButton dropDownButton1;
internal ToolStripDropDown dropDown;
internal ToolStripButton buttonRed;
internal ToolStripButton buttonBlue;
internal ToolStripButton buttonYellow;

private void InitializeDropDownButton()
{
    dropDownButton1 = new ToolStripDropDownButton();
    dropDown = new ToolStripDropDown();
    dropDownButton1.Text = "A";

    // Set the drop-down on the ToolStripDropDownButton.
    dropDownButton1.DropDown = dropDown;

    // Set the drop-down direction.
    dropDownButton1.DropDownDirection = ToolStripDropDownDirection.Left;

    // Do not show a drop-down arrow.
    dropDownButton1.ShowDropDownArrow = false;

    // Declare three buttons, set their foreground color and text, 
    // and add the buttons to the drop-down.
    buttonRed = new ToolStripButton();
    buttonRed.ForeColor = Color.Red;
    buttonRed.Text = "A";

    buttonBlue = new ToolStripButton();
    buttonBlue.ForeColor = Color.Blue;
    buttonBlue.Text = "A";

    buttonYellow = new ToolStripButton();
    buttonYellow.ForeColor = Color.Yellow;
    buttonYellow.Text = "A";
    
    buttonBlue.Click += new EventHandler(colorButtonsClick);
    buttonRed.Click += new EventHandler(colorButtonsClick);
    buttonYellow.Click += new EventHandler(colorButtonsClick);

    dropDown.Items.AddRange(new ToolStripItem[] 
        { buttonRed, buttonBlue, buttonYellow });
    toolStrip1.Items.Add(dropDownButton1);
}

// Handle the buttons' click event by setting the foreground color of the
// form to the foreground color of the button that is clicked.
private void colorButtonsClick(object sender, EventArgs e)
{
    ToolStripButton senderButton = (ToolStripButton)sender;
    this.ForeColor = senderButton.ForeColor;
}

' Declare the drop-down button and the items it will contain.
Friend WithEvents dropDownButton1 As ToolStripDropDownButton
Friend WithEvents dropDown As ToolStripDropDown
Friend WithEvents buttonRed As ToolStripButton
Friend WithEvents buttonBlue As ToolStripButton
Friend WithEvents buttonYellow As ToolStripButton

Private Sub InitializeDropDownButton() 
    dropDownButton1 = New ToolStripDropDownButton()
    dropDown = New ToolStripDropDown()
    dropDownButton1.Text = "A"
    
    ' Set the drop-down on the ToolStripDropDownButton.
    dropDownButton1.DropDown = dropDown

    ' Set the drop-down direction.
    dropDownButton1.DropDownDirection = ToolStripDropDownDirection.Left

    ' Do not show a drop-down arrow.
    dropDownButton1.ShowDropDownArrow = False

    ' Declare three buttons, set their foreground color and text, 
    ' and add the buttons to the drop-down.
    buttonRed = New ToolStripButton()
    buttonRed.ForeColor = Color.Red
    buttonRed.Text = "A"
    
    buttonBlue = New ToolStripButton()
    buttonBlue.ForeColor = Color.Blue
    buttonBlue.Text = "A"
    
    buttonYellow = New ToolStripButton()
    buttonYellow.ForeColor = Color.Yellow
    buttonYellow.Text = "A"
    
    dropDown.Items.AddRange(New ToolStripItem() {buttonRed, buttonBlue, buttonYellow})
    toolStrip1.Items.Add(dropDownButton1)
End Sub

' Handle the buttons' click event by setting the foreground color of the
' form to the foreground color of the button that is clicked.
Public Sub colorButtonsClick(ByVal sender As [Object], ByVal e As EventArgs) _
    Handles buttonRed.Click, buttonBlue.Click, buttonYellow.Click
    Dim senderButton As ToolStripButton = CType(sender, ToolStripButton)
    Me.ForeColor = senderButton.ForeColor

End Sub

适用于

ToolStripDropDownButton(Image)

初始化 ToolStripDropDownButton 类的新实例，使之显示指定的图像。

public:
 ToolStripDropDownButton(System::Drawing::Image ^ image);

public ToolStripDropDownButton (System.Drawing.Image image);

public ToolStripDropDownButton (System.Drawing.Image? image);

new System.Windows.Forms.ToolStripDropDownButton : System.Drawing.Image -> System.Windows.Forms.ToolStripDropDownButton

Public Sub New (image As Image)

参数

image: Image

要在 Image 上显示的 ToolStripDropDownButton。

适用于

ToolStripDropDownButton(String)

初始化 ToolStripDropDownButton 类的新实例，使之显示指定的文本。

public:
 ToolStripDropDownButton(System::String ^ text);

public ToolStripDropDownButton (string text);

public ToolStripDropDownButton (string? text);

new System.Windows.Forms.ToolStripDropDownButton : string -> System.Windows.Forms.ToolStripDropDownButton

Public Sub New (text As String)

参数

text: String

要在 ToolStripDropDownButton 上显示的文本。

适用于

ToolStripDropDownButton(String, Image)

初始化 ToolStripDropDownButton 类的新实例，使之显示指定的文本和图像。

public:
 ToolStripDropDownButton(System::String ^ text, System::Drawing::Image ^ image);

public ToolStripDropDownButton (string text, System.Drawing.Image image);

public ToolStripDropDownButton (string? text, System.Drawing.Image? image);

new System.Windows.Forms.ToolStripDropDownButton : string * System.Drawing.Image -> System.Windows.Forms.ToolStripDropDownButton

Public Sub New (text As String, image As Image)

参数

text: String

要在 ToolStripDropDownButton 上显示的文本。

image: Image

要在 Image 上显示的 ToolStripDropDownButton。

适用于

ToolStripDropDownButton(String, Image, EventHandler)

初始化 ToolStripDropDownButton 类的新实例，使之显示指定的文本和图像并引发 Click 事件。

public:
 ToolStripDropDownButton(System::String ^ text, System::Drawing::Image ^ image, EventHandler ^ onClick);

public ToolStripDropDownButton (string text, System.Drawing.Image image, EventHandler onClick);

public ToolStripDropDownButton (string? text, System.Drawing.Image? image, EventHandler? onClick);

new System.Windows.Forms.ToolStripDropDownButton : string * System.Drawing.Image * EventHandler -> System.Windows.Forms.ToolStripDropDownButton

Public Sub New (text As String, image As Image, onClick As EventHandler)

参数

text: String

要在 ToolStripDropDownButton 上显示的文本。

image: Image

要在 Image 上显示的 ToolStripDropDownButton。

onClick: EventHandler

Click 事件的事件处理程序。

适用于

ToolStripDropDownButton(String, Image, ToolStripItem[])

初始化 ToolStripDropDownButton 类的新实例。

public:
 ToolStripDropDownButton(System::String ^ text, System::Drawing::Image ^ image, ... cli::array <System::Windows::Forms::ToolStripItem ^> ^ dropDownItems);

public ToolStripDropDownButton (string text, System.Drawing.Image image, params System.Windows.Forms.ToolStripItem[] dropDownItems);

public ToolStripDropDownButton (string? text, System.Drawing.Image? image, params System.Windows.Forms.ToolStripItem[]? dropDownItems);

new System.Windows.Forms.ToolStripDropDownButton : string * System.Drawing.Image * System.Windows.Forms.ToolStripItem[] -> System.Windows.Forms.ToolStripDropDownButton

Public Sub New (text As String, image As Image, ParamArray dropDownItems As ToolStripItem())

参数

text: String

要在 ToolStripDropDownButton 上显示的文本。

image: Image

要在 Image 上显示的 ToolStripDropDownButton。

dropDownItems: ToolStripItem[]

ToolStripItem 类型的数组，其中包含 ToolStripDropDownButton 的项。

适用于

ToolStripDropDownButton(String, Image, EventHandler, String)

初始化 ToolStripDropDownButton 类的新实例，使之具有指定的名称，显示指定的文本和图像，并引发 Click 事件。

public:
 ToolStripDropDownButton(System::String ^ text, System::Drawing::Image ^ image, EventHandler ^ onClick, System::String ^ name);

public ToolStripDropDownButton (string text, System.Drawing.Image image, EventHandler onClick, string name);

public ToolStripDropDownButton (string? text, System.Drawing.Image? image, EventHandler? onClick, string? name);

new System.Windows.Forms.ToolStripDropDownButton : string * System.Drawing.Image * EventHandler * string -> System.Windows.Forms.ToolStripDropDownButton

Public Sub New (text As String, image As Image, onClick As EventHandler, name As String)

参数

text: String

要在 ToolStripDropDownButton 上显示的文本。

image: Image

要在 Image 上显示的 ToolStripDropDownButton。

onClick: EventHandler

Click 事件的事件处理程序。

name: String

ToolStripDropDownButton 的名称。

适用于

ToolStripDropDownButton 构造函数

定义

重载

ToolStripDropDownButton()

示例

适用于

ToolStripDropDownButton(Image)

参数

适用于

ToolStripDropDownButton(String)

参数

适用于

ToolStripDropDownButton(String, Image)

参数

适用于

ToolStripDropDownButton(String, Image, EventHandler)

参数

适用于

ToolStripDropDownButton(String, Image, ToolStripItem[])

参数

适用于

ToolStripDropDownButton(String, Image, EventHandler, String)

参数

适用于

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