ParentControlDesigner 클래스
중첩 컨트롤을 지원하는 Control의 디자인 모드 동작을 확장합니다.
네임스페이스: System.Windows.Forms.Design
어셈블리: System.Design(system.design.dll)
구문
‘선언
Public Class ParentControlDesigner
Inherits ControlDesigner
‘사용 방법
Dim instance As ParentControlDesigner
public class ParentControlDesigner : ControlDesigner
public ref class ParentControlDesigner : public ControlDesigner
public class ParentControlDesigner extends ControlDesigner
public class ParentControlDesigner extends ControlDesigner
설명
ParentControlDesigner에서는 자식 컨트롤을 포함할 수 있는 컨트롤의 디자이너에 대한 기본 클래스를 제공합니다. ParentControlDesigner는 ControlDesigner 및 ComponentDesigner 클래스에서 상속된 메서드와 기능 외에도 디자인 타임에 동작을 확장할 컨트롤 내에서 자식 컨트롤을 추가, 삭제, 선택 및 정렬하도록 만드는 기능을 수행합니다.
DesignerAttribute를 사용하여 형식에 디자이너를 연결할 수 있습니다. 디자인 타임 동작을 사용자 지정하는 방법에 대한 개요를 보려면 디자인 타임 지원 확장을 참조하십시오.
예제
다음 예제에서는 사용자 지정 ParentControlDesigner를 구현하는 방법을 보여 줍니다. 이 코드 예제는 IToolboxUser 인터페이스에 대해 제공되는 보다 큰 예제의 일부입니다.
Imports System
Imports System.Collections
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Diagnostics
Imports System.Drawing
Imports System.Drawing.Design
Imports System.Windows.Forms
Imports System.Windows.Forms.Design
' This example contains an IRootDesigner that implements the IToolboxUser interface.
' This example demonstrates how to enable the GetToolSupported method of an IToolboxUser
' designer in order to disable specific toolbox items, and how to respond to the
' invocation of a ToolboxItem in the ToolPicked method of an IToolboxUser implementation.
' This example component class demonstrates the associated IRootDesigner which
' implements the IToolboxUser interface. When designer view is invoked, Visual
' Studio .NET attempts to display a design mode view for the class at the top
' of a code file. This can sometimes fail when the class is one of multiple types
' in a code file, and has a DesignerAttribute associating it with an IRootDesigner.
' Placing a derived class at the top of the code file solves this problem. A
' derived class is not typically needed for this reason, except that placing the
' RootDesignedComponent class in another file is not a simple solution for a code
' example that is packaged in one segment of code.
Public Class RootViewSampleComponent
Inherits RootDesignedComponent
End Class
' The following attribute associates the SampleRootDesigner with this example component.
<DesignerAttribute(GetType(SampleRootDesigner), GetType(IRootDesigner))> _
Public Class RootDesignedComponent
Inherits System.Windows.Forms.Control
End Class
' This example IRootDesigner implements the IToolboxUser interface and provides a
' Windows Forms view technology view for its associated component using an internal
' Control type.
' The following ToolboxItemFilterAttribute enables the GetToolSupported method of this
' IToolboxUser designer to be queried to check for whether to enable or disable all
' ToolboxItems which create any components whose type name begins with "System.Windows.Forms".
<ToolboxItemFilterAttribute("System.Windows.Forms", ToolboxItemFilterType.Custom)> _
<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
Public Class SampleRootDesigner
Inherits ParentControlDesigner
Implements IRootDesigner, IToolboxUser
' Member field of custom type RootDesignerView, a control that is shown in the
' design mode document window. This member is cached to reduce processing needed
' to recreate the view control on each call to GetView().
Private m_view As RootDesignerView
' This string array contains type names of components that should not be added to
' the component managed by this designer from the Toolbox. Any ToolboxItems whose
' type name matches a type name in this array will be marked disabled according to
' the signal returned by the IToolboxUser.GetToolSupported method of this designer.
Private blockedTypeNames As String() = {"System.Windows.Forms.ListBox", "System.Windows.Forms.GroupBox"}
' IRootDesigner.SupportedTechnologies is a required override for an IRootDesigner.
' This designer provides a display using the Windows Forms view technology.
ReadOnly Property SupportedTechnologies() As ViewTechnology() Implements IRootDesigner.SupportedTechnologies
Get
Return New ViewTechnology() {ViewTechnology.Default}
End Get
End Property
' This method returns an object that provides the view for this root designer.
Function GetView(ByVal technology As ViewTechnology) As Object Implements IRootDesigner.GetView
' If the design environment requests a view technology other than Windows
' Forms, this method throws an Argument Exception.
If technology <> ViewTechnology.Default Then
Throw New ArgumentException("An unsupported view technology was requested", "Unsupported view technology.")
End If
' Creates the view object if it has not yet been initialized.
If m_view Is Nothing Then
m_view = New RootDesignerView(Me)
End If
Return m_view
End Function
' This method can signal whether to enable or disable the specified
' ToolboxItem when the component associated with this designer is selected.
Function GetToolSupported(ByVal tool As ToolboxItem) As Boolean Implements IToolboxUser.GetToolSupported
' Search the blocked type names array for the type name of the tool
' for which support for is being tested. Return false to indicate the
' tool should be disabled when the associated component is selected.
Dim i As Integer
For i = 0 To blockedTypeNames.Length - 1
If tool.TypeName = blockedTypeNames(i) Then
Return False
End If
Next i ' Return true to indicate support for the tool, if the type name of the
' tool is not located in the blockedTypeNames string array.
Return True
End Function
' This method can perform behavior when the specified tool has been invoked.
' Invocation of a ToolboxItem typically creates a component or components,
' and adds any created components to the associated component.
Sub ToolPicked(ByVal tool As ToolboxItem) Implements IToolboxUser.ToolPicked
End Sub
' This control provides a Windows Forms view technology view object that
' provides a display for the SampleRootDesigner.
<DesignerAttribute(GetType(ParentControlDesigner), GetType(IDesigner))> _
Friend Class RootDesignerView
Inherits Control
' This field stores a reference to a designer.
Private m_designer As IDesigner
Public Sub New(ByVal designer As IDesigner)
' Performs basic control initialization.
m_designer = designer
BackColor = Color.Blue
Font = New Font(Font.FontFamily.Name, 24.0F)
End Sub
' This method is called to draw the view for the SampleRootDesigner.
Protected Overrides Sub OnPaint(ByVal pe As PaintEventArgs)
MyBase.OnPaint(pe)
' Draws the name of the component in large letters.
pe.Graphics.DrawString(m_designer.Component.Site.Name, Font, Brushes.Yellow, New RectangleF(ClientRectangle.X, ClientRectangle.Y, ClientRectangle.Width, ClientRectangle.Height))
End Sub
End Class
End Class
using System;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Design;
using System.Windows.Forms;
using System.Windows.Forms.Design;
// This example contains an IRootDesigner that implements the IToolboxUser interface.
// This example demonstrates how to enable the GetToolSupported method of an IToolboxUser
// designer in order to disable specific toolbox items, and how to respond to the
// invocation of a ToolboxItem in the ToolPicked method of an IToolboxUser implementation.
namespace IToolboxUserExample
{
// This example component class demonstrates the associated IRootDesigner which
// implements the IToolboxUser interface. When designer view is invoked, Visual
// Studio .NET attempts to display a design mode view for the class at the top
// of a code file. This can sometimes fail when the class is one of multiple types
// in a code file, and has a DesignerAttribute associating it with an IRootDesigner.
// Placing a derived class at the top of the code file solves this problem. A
// derived class is not typically needed for this reason, except that placing the
// RootDesignedComponent class in another file is not a simple solution for a code
// example that is packaged in one segment of code.
public class RootViewSampleComponent : RootDesignedComponent
{
}
// The following attribute associates the SampleRootDesigner with this example component.
[DesignerAttribute(typeof(SampleRootDesigner), typeof(IRootDesigner))]
public class RootDesignedComponent : System.Windows.Forms.Control
{
}
// This example IRootDesigner implements the IToolboxUser interface and provides a
// Windows Forms view technology view for its associated component using an internal
// Control type.
// The following ToolboxItemFilterAttribute enables the GetToolSupported method of this
// IToolboxUser designer to be queried to check for whether to enable or disable all
// ToolboxItems which create any components whose type name begins with "System.Windows.Forms".
[ToolboxItemFilterAttribute("System.Windows.Forms", ToolboxItemFilterType.Custom)]
[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name = "FullTrust")]
public class SampleRootDesigner : ParentControlDesigner, IRootDesigner, IToolboxUser
{
// This field is a custom Control type named RootDesignerView. This field references
// a control that is shown in the design mode document window.
private RootDesignerView view;
// This string array contains type names of components that should not be added to
// the component managed by this designer from the Toolbox. Any ToolboxItems whose
// type name matches a type name in this array will be marked disabled according to
// the signal returned by the IToolboxUser.GetToolSupported method of this designer.
private string[] blockedTypeNames =
{
"System.Windows.Forms.ListBox",
"System.Windows.Forms.GroupBox"
};
// IRootDesigner.SupportedTechnologies is a required override for an IRootDesigner.
// This designer provides a display using the Windows Forms view technology.
ViewTechnology[] IRootDesigner.SupportedTechnologies
{
get { return new ViewTechnology[] {ViewTechnology.Default}; }
}
// This method returns an object that provides the view for this root designer.
object IRootDesigner.GetView(ViewTechnology technology)
{
// If the design environment requests a view technology other than Windows
// Forms, this method throws an Argument Exception.
if (technology != ViewTechnology.Default)
throw new ArgumentException("An unsupported view technology was requested",
"Unsupported view technology.");
// Creates the view object if it has not yet been initialized.
if (view == null)
view = new RootDesignerView(this);
return view;
}
// This method can signal whether to enable or disable the specified
// ToolboxItem when the component associated with this designer is selected.
bool IToolboxUser.GetToolSupported(ToolboxItem tool)
{
// Search the blocked type names array for the type name of the tool
// for which support for is being tested. Return false to indicate the
// tool should be disabled when the associated component is selected.
for( int i=0; i<blockedTypeNames.Length; i++ )
if( tool.TypeName == blockedTypeNames[i] )
return false;
// Return true to indicate support for the tool, if the type name of the
// tool is not located in the blockedTypeNames string array.
return true;
}
// This method can perform behavior when the specified tool has been invoked.
// Invocation of a ToolboxItem typically creates a component or components,
// and adds any created components to the associated component.
void IToolboxUser.ToolPicked(ToolboxItem tool)
{
}
// This control provides a Windows Forms view technology view object that
// provides a display for the SampleRootDesigner.
[DesignerAttribute(typeof(ParentControlDesigner), typeof(IDesigner))]
internal class RootDesignerView : Control
{
// This field stores a reference to a designer.
private IDesigner m_designer;
public RootDesignerView(IDesigner designer)
{
// Perform basic control initialization.
m_designer = designer;
BackColor = Color.Blue;
Font = new Font(Font.FontFamily.Name, 24.0f);
}
// This method is called to draw the view for the SampleRootDesigner.
protected override void OnPaint(PaintEventArgs pe)
{
base.OnPaint(pe);
// Draw the name of the component in large letters.
pe.Graphics.DrawString(m_designer.Component.Site.Name, Font, Brushes.Yellow, ClientRectangle);
}
}
}
}
상속 계층 구조
System.Object
System.ComponentModel.Design.ComponentDesigner
System.Windows.Forms.Design.ControlDesigner
System.Windows.Forms.Design.ParentControlDesigner
System.Windows.Forms.Design.ScrollableControlDesigner
스레드로부터의 안전성
이 형식의 모든 public static(Visual Basic의 경우 Shared) 멤버는 스레드로부터 안전합니다. 인터페이스 멤버는 스레드로부터 안전하지 않습니다.
플랫폼
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
.NET Framework에서 모든 플래폼의 모든 버전을 지원하지는 않습니다. 지원되는 버전의 목록은 시스템 요구 사항을 참조하십시오.
버전 정보
.NET Framework
2.0, 1.1, 1.0에서 지원
참고 항목
참조
ParentControlDesigner 멤버
System.Windows.Forms.Design 네임스페이스
ControlDesigner 클래스
ComponentDesigner
IDesigner
IDesignerFilter
DesignerAttribute