ImageList 构造函数

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

初始化 ImageList 类的新实例。

重载

ImageList()	用 ImageList、ColorDepth 和 ImageSize 的默认值初始化 TransparentColor 类的新实例。
ImageList(IContainer)	初始化 ImageList 类的新实例，将它与一个容器关联起来。

ImageList()

用 ImageList、ColorDepth 和 ImageSize 的默认值初始化 TransparentColor 类的新实例。

public:
 ImageList();

public ImageList ();

Public Sub New ()

示例

下面的代码示例演示如何构造 ImageList、将图像添加到 Images 属性、设置 ImageSize 属性以及使用 Draw 方法。 若要运行此示例，请将其置于包含名为 的按钮的 Button1窗体中。 该示例假定 c：\Windows\ 处存在 FeatherTexture.bmp 和 Gone Fishing.bmp 。 如果系统中不存在位图，或者位于其他位置，请相应地更改示例。

internal:
   System::Windows::Forms::ImageList^ ImageList1;

private:

   // Create an ImageList Object, populate it, and display
   // the images it contains.
   void Button1_Click( System::Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      
      // Construct the ImageList.
      ImageList1 = gcnew ImageList;
      
      // Set the ImageSize property to a larger size 
      // (the default is 16 x 16).
      ImageList1->ImageSize = System::Drawing::Size( 112, 112 );
      
      // Add two images to the list.
      ImageList1->Images->Add( Image::FromFile( "c:\\windows\\FeatherTexture.bmp" ) );
      ImageList1->Images->Add( Image::FromFile( "C:\\windows\\Gone Fishing.bmp" ) );
      
      // Get a Graphics object from the form's handle.
      Graphics^ theGraphics = Graphics::FromHwnd( this->Handle );
      
      // Loop through the images in the list, drawing each image.
      for ( int count = 0; count < ImageList1->Images->Count; count++ )
      {
         ImageList1->Draw( theGraphics, Point(85,85), count );
         
         // Call Application.DoEvents to force a repaint of the form.
         Application::DoEvents();
         
         // Call the Sleep method to allow the user to see the image.
         System::Threading::Thread::Sleep( 1000 );

      }
   }

internal System.Windows.Forms.ImageList ImageList1;

// Create an ImageList Object, populate it, and display
// the images it contains.
private void Button1_Click(System.Object sender, 
    System.EventArgs e)
{

    // Construct the ImageList.
    ImageList1 = new ImageList();

    // Set the ImageSize property to a larger size 
    // (the default is 16 x 16).
    ImageList1.ImageSize = new Size(112, 112);

    // Add two images to the list.
    ImageList1.Images.Add(
        Image.FromFile("c:\\windows\\FeatherTexture.bmp"));
    ImageList1.Images.Add(
        Image.FromFile("C:\\windows\\Gone Fishing.bmp"));

    // Get a Graphics object from the form's handle.
    Graphics theGraphics = Graphics.FromHwnd(this.Handle);

    // Loop through the images in the list, drawing each image.
    for(int count = 0; count < ImageList1.Images.Count; count++)
    {
        ImageList1.Draw(theGraphics, new Point(85, 85), count);

        // Call Application.DoEvents to force a repaint of the form.
        Application.DoEvents();

        // Call the Sleep method to allow the user to see the image.
        System.Threading.Thread.Sleep(1000);
    }
}

Friend WithEvents ImageList1 As System.Windows.Forms.ImageList

' Create an ImageList Object, populate it, and display
' the images it contains.
Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click

    ' Construct the ImageList.
    ImageList1 = New ImageList

    ' Set the ImageSize property to a larger size 
    ' (the default is 16 x 16).
    ImageList1.ImageSize = New Size(112, 112)

    ' Add two images to the list.
    ImageList1.Images.Add(Image.FromFile _
        ("c:\windows\FeatherTexture.bmp"))
    ImageList1.Images.Add _
        (Image.FromFile("C:\windows\Gone Fishing.bmp"))

    Dim count As System.Int32

    ' Get a Graphics object from the form's handle.
    Dim theGraphics As Graphics = Graphics.FromHwnd(Me.Handle)

    ' Loop through the images in the list, drawing each image.
    For count = 0 To ImageList1.Images.Count - 1
        ImageList1.Draw(theGraphics, New Point(85, 85), count)

        ' Call Application.DoEvents to force a repaint of the form.
        Application.DoEvents()

        ' Call the Sleep method to allow the user to see the image.
        System.Threading.Thread.Sleep(1000)
    Next
End Sub

注解

下表显示了 实例 ImageList的初始属性值。

项	说明
ColorDepth	在通过 .NET 7 的 .NET Framework 和 .NET (Core) 版本中，默认值为 Depth8Bit。 在 .NET 8 及更高版本中，默认值为 Depth32Bit。
ImageSize	默认值是 Size 高度和宽度为 16 乘 16 的对象。
TransparentColor	默认值是 Transparent。

ImageList(IContainer)

初始化 ImageList 类的新实例，将它与一个容器关联起来。

public:
 ImageList(System::ComponentModel::IContainer ^ container);

public ImageList (System.ComponentModel.IContainer container);

new System.Windows.Forms.ImageList : System.ComponentModel.IContainer -> System.Windows.Forms.ImageList

Public Sub New (container As IContainer)

参数

container

IContainer

实现 IContainer 的对象，以便与 ImageList 的此实例关联。

注解

构造ImageList函数使你能够将 与任何 Container 对象相关联ImageList。 通过像这样关联 ImageList ，可以将 的生存期 ImageList 控制权移交给 Container。 如果在应用程序中使用多个组件，并且想要同时释放所有这些组件，则这非常有用。 例如，如果将 、 和 与 相关联ToolTip，则对容器调用 Dispose 也会强制释放所有这些Container组件。TimerImageList