Control.BackgroundImage Property

Definition

获取或设置在控件中显示的背景图像。Gets or sets the background image displayed in the control.

public:
 virtual property System::Drawing::Image ^ BackgroundImage { System::Drawing::Image ^ get(); void set(System::Drawing::Image ^ value); };
public virtual System.Drawing.Image BackgroundImage { get; set; }
member this.BackgroundImage : System.Drawing.Image with get, set
Public Overridable Property BackgroundImage As Image

Property Value

Image

一个 Image,表示在控件背景中显示的图像。An Image that represents the image to display in the background of the control.

Examples

下面的代码示例将 Button 添加到窗体中,并设置其一些公共属性。The following code example adds a Button to a form and sets some of its common properties. 该示例将按钮锚定在窗体右下角,以便在调整窗体大小时保持其相对位置。The example anchors the button to the bottom-right corner of the form so it keeps its relative position as the form is resized. 接下来,它设置 BackgroundImage,并将按钮的大小调整为与 Image相同。Next it sets the BackgroundImage and resizes the button to the same size as the Image. 然后,该示例将 TabStop 设置为 true 并设置 TabIndex 属性。The example then sets the TabStop to true and sets the TabIndex property. 最后,添加一个事件处理程序来处理按钮的 Click 事件。Lastly, it adds an event handler to handle the Click event of the button. 此示例要求你有一个名为 imageList1ImageListThis example requires that you have an ImageList named imageList1.

   // Add a button to a form and set some of its common properties.
private:
   void AddMyButton()
   {
      // Create a button and add it to the form.
      Button^ button1 = gcnew Button;

      // Anchor the button to the bottom right corner of the form
      button1->Anchor = static_cast<AnchorStyles>(AnchorStyles::Bottom | AnchorStyles::Right);

      // Assign a background image.
      button1->BackgroundImage = imageList1->Images[ 0 ];

      // Specify the layout style of the background image. Tile is the default.
      button1->BackgroundImageLayout = ImageLayout::Center;

      // Make the button the same size as the image.
      button1->Size = button1->BackgroundImage->Size;

      // Set the button's TabIndex and TabStop properties.
      button1->TabIndex = 1;
      button1->TabStop = true;

      // Add a delegate to handle the Click event.
      button1->Click += gcnew System::EventHandler( this, &Form1::button1_Click );

      // Add the button to the form.
      this->Controls->Add( button1 );
   }
// Add a button to a form and set some of its common properties.
private void AddMyButton()
{
   // Create a button and add it to the form.
   Button button1 = new Button();

   // Anchor the button to the bottom right corner of the form
   button1.Anchor = (AnchorStyles.Bottom | AnchorStyles.Right);

   // Assign a background image.
   button1.BackgroundImage = imageList1.Images[0];

   // Specify the layout style of the background image. Tile is the default.
   button1.BackgroundImageLayout = ImageLayout.Center;
   
   // Make the button the same size as the image.
   button1.Size = button1.BackgroundImage.Size;

   // Set the button's TabIndex and TabStop properties.
   button1.TabIndex = 1;
   button1.TabStop = true;

   // Add a delegate to handle the Click event.
   button1.Click += new System.EventHandler(this.button1_Click);

   // Add the button to the form.
   this.Controls.Add(button1);
}
' Add a button to a form and set some of its common properties.
Private Sub AddMyButton()
   ' Create a button and add it to the form.
   Dim button1 As New Button()
   
   ' Anchor the button to the bottom right corner of the form
   button1.Anchor = AnchorStyles.Bottom Or AnchorStyles.Right
   
   ' Assign a background image.
   button1.BackgroundImage = imageList1.Images(0)

   ' Specify the layout style of the background image. Tile is the default.
   button1.BackgroundImageLayout = ImageLayout.Center
   
   ' Make the button the same size as the image.
   button1.Size = button1.BackgroundImage.Size
   
   ' Set the button's TabIndex and TabStop properties.
   button1.TabIndex = 1
   button1.TabStop = True

   ' Add a delegate to handle the Click event.
   AddHandler button1.Click, AddressOf Me.button1_Click
   
   ' Add the button to the form.
   Me.Controls.Add(button1)
End Sub

Remarks

Note

Windows 窗体控件作为背景图像不支持透明或透明颜色的图像。Images with translucent or transparent colors are not supported by Windows Forms controls as background images.

trueRightToLeftLayout 属性的子控件不支持此属性。This property is not supported on child controls whose RightToLeftLayout property is true.

Notes to Inheritors

在派生类中重写 BackgroundImage 属性时,请使用基类的 BackgroundImage 属性来扩展基实现。When overriding the BackgroundImage property in a derived class, use the base class's BackgroundImage property to extend the base implementation. 否则,必须提供所有实现。Otherwise, you must provide all the implementation. 不需要重写 BackgroundImage 属性的 getset 访问器;如果需要,只能重写一个。You are not required to override both the get and set accessors of the BackgroundImage property; you can override only one if needed.

Applies to

See also