IToolboxService 介面
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
提供方法和屬性來管理並查詢開發環境中的工具箱。
public interface class IToolboxService[System.Runtime.InteropServices.Guid("4BACD258-DE64-4048-BC4E-FEDBEF9ACB76")]
[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]
public interface IToolboxService[<System.Runtime.InteropServices.Guid("4BACD258-DE64-4048-BC4E-FEDBEF9ACB76")>]
[<System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)>]
type IToolboxService = interfacePublic Interface IToolboxService- 衍生
- 屬性
範例
下列程式代碼範例示範在 IToolboxService 設計模式中使用 來列出和選取工具箱類別和專案，以及從工具箱專案建立元件或控件，並將其新增至 Form。 若要使用範例，請將程式代碼編譯為元件，並在 Windows Forms 應用程式中新增元件的參考。 如果您使用 Visual Studio，會自動 IToolboxServiceControl 將 新增至 [工具箱]。 Create 表單上的 實例IToolboxServiceControl來測試其行為。
#using <System.dll>
#using <System.Design.dll>
#using <System.Windows.Forms.dll>
#using <System.Data.dll>
#using <System.Drawing.dll>
using namespace System;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Drawing;
using namespace System::Drawing::Design;
using namespace System::Data;
using namespace System::Diagnostics;
using namespace System::Windows::Forms;
using namespace System::Security::Permissions;
namespace IToolboxServiceExample
{
// This designer passes window messages to the controls at design time.
public ref class WindowMessageDesigner: public System::Windows::Forms::Design::ControlDesigner
{
public:
WindowMessageDesigner(){}
protected:
// Window procedure passes events to control.
[SecurityPermission(SecurityAction::Demand, Flags=SecurityPermissionFlag::UnmanagedCode)]
virtual void WndProc( System::Windows::Forms::Message% m ) override
{
if ( m.HWnd == this->Control->Handle )
ControlDesigner::WndProc( m );
else
ControlDesigner::DefWndProc( m );
}
};
// Provides an example control that functions in design mode to
// demonstrate use of the IToolboxService to list and select toolbox
// categories and items, and to add components or controls
// to the parent form using code.
[DesignerAttribute(IToolboxServiceExample::WindowMessageDesigner::typeid,IDesigner::typeid)]
public ref class IToolboxServiceControl: public System::Windows::Forms::UserControl
{
private:
System::Windows::Forms::ListBox^ listBox1;
System::Windows::Forms::ListBox^ listBox2;
IToolboxService^ toolboxService;
ToolboxItemCollection^ tools;
int controlSpacingMultiplier;
public:
IToolboxServiceControl()
{
InitializeComponent();
listBox2->DoubleClick += gcnew EventHandler( this, &IToolboxServiceControl::CreateComponent );
controlSpacingMultiplier = 0;
}
property System::ComponentModel::ISite^ Site
{
// Obtain or reset IToolboxService reference on each siting of control.
virtual System::ComponentModel::ISite^ get() override
{
return __super::Site;
}
virtual void set( System::ComponentModel::ISite^ value ) override
{
__super::Site = value;
// If the component was sited, attempt to obtain
// an IToolboxService instance.
if ( __super::Site != nullptr )
{
toolboxService = dynamic_cast<IToolboxService^>(this->GetService( IToolboxService::typeid ));
// If an IToolboxService was located, update the
// category list.
if ( toolboxService != nullptr )
UpdateLists();
}
else
toolboxService = nullptr;
}
}
private:
// Updates the list of categories and the list of items in the
// selected category.
[SecurityPermission(SecurityAction::Demand, Flags=SecurityPermissionFlag::UnmanagedCode)]
void UpdateLists()
{
if ( toolboxService != nullptr )
{
this->listBox1->SelectedIndexChanged -= gcnew System::EventHandler( this, &IToolboxServiceControl::UpdateSelectedCategory );
this->listBox2->SelectedIndexChanged -= gcnew System::EventHandler( this, &IToolboxServiceControl::UpdateSelectedItem );
listBox1->Items->Clear();
for ( int i = 0; i < toolboxService->CategoryNames->Count; i++ )
{
listBox1->Items->Add( toolboxService->CategoryNames[ i ] );
if ( toolboxService->CategoryNames[ i ] == toolboxService->SelectedCategory )
{
listBox1->SelectedIndex = i;
tools = toolboxService->GetToolboxItems( toolboxService->SelectedCategory );
listBox2->Items->Clear();
for ( int j = 0; j < tools->Count; j++ )
listBox2->Items->Add( tools[ j ]->DisplayName );
}
}
this->listBox1->SelectedIndexChanged += gcnew System::EventHandler( this, &IToolboxServiceControl::UpdateSelectedCategory );
this->listBox2->SelectedIndexChanged += gcnew System::EventHandler( this, &IToolboxServiceControl::UpdateSelectedItem );
}
}
// Sets the selected category when a category is clicked in the
// category list.
void UpdateSelectedCategory( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
if ( toolboxService != nullptr )
{
toolboxService->SelectedCategory = dynamic_cast<String^>(listBox1->SelectedItem);
UpdateLists();
}
}
// Sets the selected item when an item is clicked in the item list.
void UpdateSelectedItem( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
if ( toolboxService != nullptr )
{
if ( listBox1->SelectedIndex != -1 )
{
if ( dynamic_cast<String^>(listBox1->SelectedItem) == toolboxService->SelectedCategory )
toolboxService->SetSelectedToolboxItem( tools[ listBox2->SelectedIndex ] );
else
UpdateLists();
}
}
}
// Creates a control from a double-clicked toolbox item and adds
// it to the parent form.
void CreateComponent( Object^ /*sender*/, EventArgs^ /*e*/ )
{
// Obtains an IDesignerHost service from design environment.
IDesignerHost^ host = dynamic_cast<IDesignerHost^>(this->GetService( IDesignerHost::typeid ));
// Get the project components container (Windows Forms control
// containment depends on controls collections).
IContainer^ container = host->Container;
// Identifies the parent Form.
System::Windows::Forms::Form^ parentForm = this->FindForm();
// Retrieves the parent Form's designer host.
IDesignerHost^ parentHost = dynamic_cast<IDesignerHost^>(parentForm->Site->GetService( IDesignerHost::typeid ));
// Create the components.
array<IComponent^>^comps = nullptr;
try
{
comps = toolboxService->GetSelectedToolboxItem()->CreateComponents( parentHost );
}
catch ( Exception^ ex )
{
// Catch and show any exceptions to prevent disabling
// the control's UI.
MessageBox::Show( ex->ToString(), "Exception message" );
}
if ( comps == nullptr )
return;
// Add any created controls to the parent form's controls
// collection. Note: components are added from the
// ToolboxItem::CreateComponents(IDesignerHost*) method.
for ( int i = 0; i < comps->Length; i++ )
{
if ( parentForm != nullptr && comps[ i ]->GetType()->IsSubclassOf( System::Windows::Forms::Control::typeid ) )
{
(dynamic_cast<System::Windows::Forms::Control^>(comps[ i ]))->Location = Point(20 * controlSpacingMultiplier,20 * controlSpacingMultiplier);
if ( controlSpacingMultiplier > 10 )
controlSpacingMultiplier = 0;
else
controlSpacingMultiplier++;
parentForm->Controls->Add( dynamic_cast<System::Windows::Forms::Control^>(comps[ i ]) );
}
}
}
protected:
// Displays labels.
virtual void OnPaint( System::Windows::Forms::PaintEventArgs^ e ) override
{
e->Graphics->DrawString( "IToolboxService Control", gcnew System::Drawing::Font( "Arial",14 ), gcnew SolidBrush( Color::Black ), 6, 4 );
e->Graphics->DrawString( "Category List", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 8, 26 );
e->Graphics->DrawString( "Items in Category", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 208, 26 );
e->Graphics->DrawString( "(Double-click item to add to parent form)", gcnew System::Drawing::Font( "Arial",7 ), gcnew SolidBrush( Color::Black ), 232, 12 );
}
private:
void InitializeComponent()
{
this->listBox1 = gcnew System::Windows::Forms::ListBox;
this->listBox2 = gcnew System::Windows::Forms::ListBox;
this->SuspendLayout();
this->listBox1->Anchor = static_cast<AnchorStyles>(System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Left);
this->listBox1->Location = System::Drawing::Point( 8, 41 );
this->listBox1->Name = "listBox1";
this->listBox1->Size = System::Drawing::Size( 192, 368 );
this->listBox1->TabIndex = 0;
this->listBox1->SelectedIndexChanged += gcnew System::EventHandler( this, &IToolboxServiceControl::UpdateSelectedCategory );
this->listBox2->Anchor = static_cast<AnchorStyles>(System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Left | System::Windows::Forms::AnchorStyles::Right);
this->listBox2->Location = System::Drawing::Point( 208, 41 );
this->listBox2->Name = "listBox2";
this->listBox2->Size = System::Drawing::Size( 228, 368 );
this->listBox2->TabIndex = 3;
this->BackColor = System::Drawing::Color::Beige;
array<System::Windows::Forms::Control^>^temp0 = {this->listBox2,this->listBox1};
this->Controls->AddRange( temp0 );
this->Location = System::Drawing::Point( 500, 400 );
this->Name = "IToolboxServiceControl*";
this->Size = System::Drawing::Size( 442, 422 );
this->ResumeLayout( false );
}
};
}
using System;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Drawing;
using System.Drawing.Design;
using System.Data;
using System.Diagnostics;
using System.Windows.Forms;
namespace IToolboxServiceExample
{
// Provides an example control that functions in design mode to
// demonstrate use of the IToolboxService to list and select toolbox
// categories and items, and to add components or controls
// to the parent form using code.
[DesignerAttribute(typeof(WindowMessageDesigner), typeof(IDesigner))]
public class IToolboxServiceControl : System.Windows.Forms.UserControl
{
private System.Windows.Forms.ListBox listBox1;
private System.Windows.Forms.ListBox listBox2;
private IToolboxService toolboxService = null;
private ToolboxItemCollection tools;
private int controlSpacingMultiplier;
public IToolboxServiceControl()
{
InitializeComponent();
listBox2.DoubleClick += new EventHandler(this.CreateComponent);
controlSpacingMultiplier = 0;
}
// Obtain or reset IToolboxService reference on each siting of control.
public override System.ComponentModel.ISite Site
{
get
{
return base.Site;
}
set
{
base.Site = value;
// If the component was sited, attempt to obtain
// an IToolboxService instance.
if( base.Site != null )
{
toolboxService = (IToolboxService)this.GetService(typeof(IToolboxService));
// If an IToolboxService was located, update the
// category list.
if( toolboxService != null )
UpdateLists();
}
else
{
toolboxService = null;
}
}
}
// Updates the list of categories and the list of items in the
// selected category.
private void UpdateLists()
{
if( toolboxService != null )
{
this.listBox1.SelectedIndexChanged -= new System.EventHandler(this.UpdateSelectedCategory);
this.listBox2.SelectedIndexChanged -= new System.EventHandler(this.UpdateSelectedItem);
listBox1.Items.Clear();
for( int i=0; i<toolboxService.CategoryNames.Count; i++ )
{
listBox1.Items.Add( toolboxService.CategoryNames[i] );
if( toolboxService.CategoryNames[i] == toolboxService.SelectedCategory )
{
listBox1.SelectedIndex = i;
tools = toolboxService.GetToolboxItems( toolboxService.SelectedCategory );
listBox2.Items.Clear();
for( int j=0; j<tools.Count; j++ )
listBox2.Items.Add( tools[j].DisplayName );
}
}
this.listBox1.SelectedIndexChanged += new System.EventHandler(this.UpdateSelectedCategory);
this.listBox2.SelectedIndexChanged += new System.EventHandler(this.UpdateSelectedItem);
}
}
// Sets the selected category when a category is clicked in the
// category list.
private void UpdateSelectedCategory(object sender, System.EventArgs e)
{
if( toolboxService != null )
{
toolboxService.SelectedCategory = (string)listBox1.SelectedItem;
UpdateLists();
}
}
// Sets the selected item when an item is clicked in the item list.
private void UpdateSelectedItem(object sender, System.EventArgs e)
{
if( toolboxService != null )
{
if( listBox1.SelectedIndex != -1 )
{
if( (string)listBox1.SelectedItem == toolboxService.SelectedCategory )
toolboxService.SetSelectedToolboxItem(tools[listBox2.SelectedIndex]);
else
UpdateLists();
}
}
}
// Creates a control from a double-clicked toolbox item and adds
// it to the parent form.
private void CreateComponent(object sender, EventArgs e)
{
// Obtains an IDesignerHost service from design environment.
IDesignerHost host = (IDesignerHost)this.GetService(typeof(IDesignerHost));
// Get the project components container (Windows Forms control
// containment depends on controls collections).
IContainer container = host.Container;
// Identifies the parent Form.
System.Windows.Forms.Form parentForm = this.FindForm();
// Retrieves the parent Form's designer host.
IDesignerHost parentHost = (IDesignerHost)parentForm.Site.GetService(typeof(IDesignerHost));
// Create the components.
IComponent[] comps = null;
try
{
comps = toolboxService.GetSelectedToolboxItem().CreateComponents(parentHost);
}
catch(Exception ex)
{
// Catch and show any exceptions to prevent disabling
// the control's UI.
MessageBox.Show(ex.ToString(), "Exception message");
}
if( comps == null )
return;
// Add any created controls to the parent form's controls
// collection. Note: components are added from the
// ToolboxItem.CreateComponents(IDesignerHost) method.
for( int i=0; i<comps.Length; i++ )
{
if( parentForm!= null && comps[i].GetType().IsSubclassOf(typeof(System.Windows.Forms.Control)) )
{
((System.Windows.Forms.Control)comps[i]).Location = new Point(20*controlSpacingMultiplier, 20*controlSpacingMultiplier);
if( controlSpacingMultiplier > 10 )
controlSpacingMultiplier = 0;
else
controlSpacingMultiplier++;
parentForm.Controls.Add( (System.Windows.Forms.Control)comps[i] );
}
}
}
// Displays labels.
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
e.Graphics.DrawString("IToolboxService Control", new Font("Arial", 14), new SolidBrush(Color.Black), 6, 4);
e.Graphics.DrawString("Category List", new Font("Arial", 8), new SolidBrush(Color.Black), 8, 26);
e.Graphics.DrawString("Items in Category", new Font("Arial", 8), new SolidBrush(Color.Black), 208, 26);
e.Graphics.DrawString("(Double-click item to add to parent form)", new Font("Arial", 7), new SolidBrush(Color.Black), 232, 12);
}
private void InitializeComponent()
{
this.listBox1 = new System.Windows.Forms.ListBox();
this.listBox2 = new System.Windows.Forms.ListBox();
this.SuspendLayout();
this.listBox1.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left);
this.listBox1.Location = new System.Drawing.Point(8, 41);
this.listBox1.Name = "listBox1";
this.listBox1.Size = new System.Drawing.Size(192, 368);
this.listBox1.TabIndex = 0;
this.listBox1.SelectedIndexChanged += new System.EventHandler(this.UpdateSelectedCategory);
this.listBox2.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this.listBox2.Location = new System.Drawing.Point(208, 41);
this.listBox2.Name = "listBox2";
this.listBox2.Size = new System.Drawing.Size(228, 368);
this.listBox2.TabIndex = 3;
this.BackColor = System.Drawing.Color.Beige;
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.listBox2,
this.listBox1});
this.Location = new System.Drawing.Point(500, 400);
this.Name = "IToolboxServiceControl";
this.Size = new System.Drawing.Size(442, 422);
this.ResumeLayout(false);
}
}
// This designer passes window messages to the controls at design time.
public class WindowMessageDesigner : System.Windows.Forms.Design.ControlDesigner
{
public WindowMessageDesigner()
{
}
// Window procedure override passes events to control.
protected override void WndProc(ref System.Windows.Forms.Message m)
{
if( m.HWnd == this.Control.Handle )
base.WndProc(ref m);
else
this.DefWndProc(ref m);
}
}
}
Imports System.Collections
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Drawing
Imports System.Drawing.Design
Imports System.Data
Imports System.Diagnostics
Imports System.Reflection
Imports System.Windows.Forms
' Provides an example control that functions in design mode to
' demonstrate use of the IToolboxService to list and select toolbox
' categories and items, and to add components or controls
' to the parent form using code.
<DesignerAttribute(GetType(WindowMessageDesigner), GetType(IDesigner))> _
<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
Public Class IToolboxServiceControl
Inherits System.Windows.Forms.UserControl
Private WithEvents listBox1 As System.Windows.Forms.ListBox
Private listBox2 As System.Windows.Forms.ListBox
Private toolboxService As IToolboxService = Nothing
Private tools As ToolboxItemCollection
Private controlSpacingMultiplier As Integer
Public Sub New()
InitializeComponent()
AddHandler listBox2.DoubleClick, AddressOf Me.CreateComponent
controlSpacingMultiplier = 0
End Sub
' Obtain or reset IToolboxService reference on each siting of control.
Public Overrides Property Site() As System.ComponentModel.ISite
Get
Return MyBase.Site
End Get
Set(ByVal Value As System.ComponentModel.ISite)
MyBase.Site = Value
' If the component was sited, attempt to obtain
' an IToolboxService instance.
If (MyBase.Site IsNot Nothing) Then
toolboxService = CType(Me.GetService(GetType(IToolboxService)), IToolboxService)
' If an IToolboxService instance was located, update the
' category list.
If (toolboxService IsNot Nothing) Then
UpdateLists()
End If
Else
toolboxService = Nothing
End If
End Set
End Property
' Updates the list of categories and the list of items in the
' selected category.
Private Sub UpdateLists()
If (toolboxService IsNot Nothing) Then
RemoveHandler listBox1.SelectedIndexChanged, AddressOf Me.UpdateSelectedCategory
RemoveHandler listBox2.SelectedIndexChanged, AddressOf Me.UpdateSelectedItem
listBox1.Items.Clear()
Dim i As Integer
For i = 0 To toolboxService.CategoryNames.Count - 1
listBox1.Items.Add(toolboxService.CategoryNames(i))
If toolboxService.CategoryNames(i) = toolboxService.SelectedCategory Then
listBox1.SelectedIndex = i
tools = toolboxService.GetToolboxItems(toolboxService.SelectedCategory)
listBox2.Items.Clear()
Dim j As Integer
For j = 0 To tools.Count - 1
listBox2.Items.Add(tools(j).DisplayName)
Next j
End If
Next i
AddHandler Me.listBox1.SelectedIndexChanged, AddressOf Me.UpdateSelectedCategory
AddHandler Me.listBox2.SelectedIndexChanged, AddressOf Me.UpdateSelectedItem
End If
End Sub
' Sets the selected category when a category is clicked in the
' category list.
Private Sub UpdateSelectedCategory(ByVal sender As Object, ByVal e As System.EventArgs) Handles listBox1.SelectedIndexChanged
If (toolboxService IsNot Nothing) Then
toolboxService.SelectedCategory = CStr(listBox1.SelectedItem)
UpdateLists()
End If
End Sub
' Sets the selected item when an item is clicked in the item list.
Private Sub UpdateSelectedItem(ByVal sender As Object, ByVal e As System.EventArgs)
If (toolboxService IsNot Nothing) Then
If listBox1.SelectedIndex <> -1 Then
If CStr(listBox1.SelectedItem) = toolboxService.SelectedCategory Then
toolboxService.SetSelectedToolboxItem(tools(listBox2.SelectedIndex))
Else
UpdateLists()
End If
End If
End If
End Sub
' Creates a control from a double-clicked toolbox item and adds
' it to the parent form.
Private Sub CreateComponent(ByVal sender As Object, ByVal e As EventArgs)
' Obtains an IDesignerHost service from design environment.
Dim host As IDesignerHost = CType(Me.GetService(GetType(IDesignerHost)), IDesignerHost)
' Gets the project components container. (Windows Forms control
' containment depends on controls collections).
Dim container As IContainer = host.Container
' Identifies the parent Form.
Dim parentForm As System.Windows.Forms.Form = Me.FindForm()
' Retrieves the parent Form's designer host.
Dim parentHost As IDesignerHost = CType(parentForm.Site.GetService(GetType(IDesignerHost)), IDesignerHost)
' Create the components.
Dim comps As IComponent() = Nothing
Try
comps = toolboxService.GetSelectedToolboxItem().CreateComponents(parentHost)
Catch ex As Exception
' Catch and show any exceptions to prevent
' disabling the control's UI.
MessageBox.Show(ex.ToString(), "Exception message")
End Try
If comps Is Nothing Then
Return
End If
' Add any created controls to the parent form's controls
' collection. Note: components are added from the
' ToolboxItem.CreateComponents(IDesignerHost) method.
Dim i As Integer
For i = 0 To comps.Length - 1
If (parentForm IsNot Nothing) AndAlso CType(comps(i), Object).GetType().IsSubclassOf(GetType(System.Windows.Forms.Control)) Then
CType(comps(i), System.Windows.Forms.Control).Location = New Point(20 * controlSpacingMultiplier, 20 * controlSpacingMultiplier)
If controlSpacingMultiplier > 10 Then
controlSpacingMultiplier = 0
Else
controlSpacingMultiplier += 1
End If
parentForm.Controls.Add(CType(comps(i), System.Windows.Forms.Control))
End If
Next i
End Sub
' Displays labels.
Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
e.Graphics.DrawString("IToolboxService Control", New Font("Arial", 14), New SolidBrush(Color.Black), 6, 4)
e.Graphics.DrawString("Category List", New Font("Arial", 8), New SolidBrush(Color.Black), 8, 26)
e.Graphics.DrawString("Items in Category", New Font("Arial", 8), New SolidBrush(Color.Black), 208, 26)
e.Graphics.DrawString("(Double-click item to add to parent form)", New Font("Arial", 7), New SolidBrush(Color.Black), 232, 12)
End Sub
Private Sub InitializeComponent()
Me.listBox1 = New System.Windows.Forms.ListBox()
Me.listBox2 = New System.Windows.Forms.ListBox()
Me.SuspendLayout()
Me.listBox1.Anchor = System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left
Me.listBox1.Location = New System.Drawing.Point(8, 41)
Me.listBox1.Name = "listBox1"
Me.listBox1.Size = New System.Drawing.Size(192, 368)
Me.listBox1.TabIndex = 0
Me.listBox2.Anchor = System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right
Me.listBox2.Location = New System.Drawing.Point(208, 41)
Me.listBox2.Name = "listBox2"
Me.listBox2.Size = New System.Drawing.Size(228, 368)
Me.listBox2.TabIndex = 3
Me.BackColor = System.Drawing.Color.Beige
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.listBox2, Me.listBox1})
Me.Location = New System.Drawing.Point(500, 400)
Me.Name = "IToolboxServiceControl"
Me.Size = New System.Drawing.Size(442, 422)
Me.ResumeLayout(False)
End Sub
End Class
' This designer passes window messages to the controls at design time.
Public Class WindowMessageDesigner
Inherits System.Windows.Forms.Design.ControlDesigner
Public Sub New()
End Sub
' Window procedure override passes events to control.
<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
If m.HWnd.Equals(Me.Control.Handle) Then
MyBase.WndProc(m)
Else
Me.DefWndProc(m)
End If
End Sub
End Class
下列程式代碼範例提供元件，該元件會使用 IToolboxService 將 「Text」 資料格式處理程式或 新增 ToolboxItemCreatorCallback至工具箱。 數據建立者回呼委派會將貼到工具箱的任何文字數據，並拖曳到窗體上，以建立TextBox包含文字的 自定義ToolboxItem。
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>
#using <System.dll>
using namespace System;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Drawing;
using namespace System::Drawing::Design;
using namespace System::Windows::Forms;
using namespace System::Security::Permissions;
namespace TextDataTextBoxComponent
{
// Custom toolbox item creates a TextBox and sets its Text property
// to the constructor-specified text.
[PermissionSetAttribute(SecurityAction::Demand, Name="FullTrust")]
public ref class TextToolboxItem: public ToolboxItem
{
private:
String^ text;
delegate void SetTextMethodHandler( Control^ c, String^ text );
public:
TextToolboxItem( String^ text )
: ToolboxItem()
{
this->text = text;
}
protected:
// ToolboxItem::CreateComponentsCore to create the TextBox
// and link a method to set its Text property.
virtual array<IComponent^>^ CreateComponentsCore( IDesignerHost^ host ) override
{
TextBox^ textbox = dynamic_cast<TextBox^>(host->CreateComponent( TextBox::typeid ));
// Because the designer resets the text of the textbox, use
// a SetTextMethodHandler to set the text to the value of
// the text data.
Control^ c = dynamic_cast<Control^>(host->RootComponent);
array<Object^>^temp0 = {textbox,text};
c->BeginInvoke( gcnew SetTextMethodHandler( this, &TextToolboxItem::OnSetText ), temp0 );
array<IComponent^>^temp1 = {textbox};
return temp1;
}
private:
// Method to set the text property of a TextBox after it is initialized.
void OnSetText( Control^ c, String^ text )
{
c->Text = text;
}
};
// Component that adds a "Text" data format ToolboxItemCreatorCallback
// to the Toolbox. This component uses a custom ToolboxItem that
// creates a TextBox containing the text data.
public ref class TextDataTextBoxComponent: public Component
{
private:
bool creatorAdded;
IToolboxService^ ts;
public:
TextDataTextBoxComponent()
{
creatorAdded = false;
}
property System::ComponentModel::ISite^ Site
{
// ISite to register TextBox creator
virtual System::ComponentModel::ISite^ get() override
{
return __super::Site;
}
virtual void set( System::ComponentModel::ISite^ value ) override
{
if ( value != nullptr )
{
__super::Site = value;
if ( !creatorAdded )
AddTextTextBoxCreator();
}
else
{
if ( creatorAdded )
RemoveTextTextBoxCreator();
__super::Site = value;
}
}
}
private:
// Adds a "Text" data format creator to the toolbox that creates
// a textbox from a text fragment pasted to the toolbox.
void AddTextTextBoxCreator()
{
ts = dynamic_cast<IToolboxService^>(GetService( IToolboxService::typeid ));
if ( ts != nullptr )
{
ToolboxItemCreatorCallback^ textCreator =
gcnew ToolboxItemCreatorCallback(
this,
&TextDataTextBoxComponent::CreateTextBoxForText );
try
{
ts->AddCreator(
textCreator,
"Text",
dynamic_cast<IDesignerHost^>(GetService( IDesignerHost::typeid )) );
creatorAdded = true;
}
catch ( Exception^ ex )
{
MessageBox::Show( ex->ToString(), "Exception Information" );
}
}
}
// Removes any "Text" data format creator from the toolbox.
void RemoveTextTextBoxCreator()
{
if ( ts != nullptr )
{
ts->RemoveCreator(
"Text",
dynamic_cast<IDesignerHost^>(GetService( IDesignerHost::typeid )) );
creatorAdded = false;
}
}
// ToolboxItemCreatorCallback delegate format method to create
// the toolbox item.
ToolboxItem^ CreateTextBoxForText( Object^ serializedObject, String^ format )
{
IDataObject^ o = gcnew DataObject(dynamic_cast<IDataObject^>(serializedObject));
if( o->GetDataPresent("System::String", true) )
{
String^ toolboxText = dynamic_cast<String^>(o->GetData( "System::String", true ));
return( gcnew TextToolboxItem( toolboxText ));
}
return nullptr;
}
public:
~TextDataTextBoxComponent()
{
if ( creatorAdded )
RemoveTextTextBoxCreator();
}
};
}
using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Drawing;
using System.Drawing.Design;
using System.Security.Permissions;
using System.Windows.Forms;
namespace TextDataTextBoxComponent
{
// Component that adds a "Text" data format ToolboxItemCreatorCallback
// to the Toolbox. This component uses a custom ToolboxItem that
// creates a TextBox containing the text data.
public class TextDataTextBoxComponent : Component
{
private bool creatorAdded = false;
private IToolboxService ts;
public TextDataTextBoxComponent()
{
}
// ISite override to register TextBox creator
public override System.ComponentModel.ISite Site
{
get
{
return base.Site;
}
set
{
if( value != null )
{
base.Site = value;
if (!creatorAdded)
{
AddTextTextBoxCreator();
}
}
else
{
if (creatorAdded)
{
RemoveTextTextBoxCreator();
}
base.Site = value;
}
}
}
// Adds a "Text" data format creator to the toolbox that creates
// a textbox from a text fragment pasted to the toolbox.
private void AddTextTextBoxCreator()
{
ts = (IToolboxService)GetService(typeof(IToolboxService));
if (ts != null)
{
ToolboxItemCreatorCallback textCreator =
new ToolboxItemCreatorCallback(this.CreateTextBoxForText);
try
{
ts.AddCreator(
textCreator,
"Text",
(IDesignerHost)GetService(typeof(IDesignerHost)));
creatorAdded = true;
}
catch(Exception ex)
{
MessageBox.Show(
ex.ToString(),
"Exception Information");
}
}
}
// Removes any "Text" data format creator from the toolbox.
private void RemoveTextTextBoxCreator()
{
if (ts != null)
{
ts.RemoveCreator(
"Text",
(IDesignerHost)GetService(typeof(IDesignerHost)));
creatorAdded = false;
}
}
// ToolboxItemCreatorCallback delegate format method to create
// the toolbox item.
private ToolboxItem CreateTextBoxForText(
object serializedObject,
string format)
{
DataObject o = new DataObject((IDataObject)serializedObject);
string[] formats = o.GetFormats();
if (o.GetDataPresent("System.String", true))
{
string toolboxText = (string)(o.GetData("System.String", true));
return (new TextToolboxItem(toolboxText));
}
return null;
}
protected override void Dispose(bool disposing)
{
if (creatorAdded)
{
RemoveTextTextBoxCreator();
}
}
}
// Custom toolbox item creates a TextBox and sets its Text property
// to the constructor-specified text.
public class TextToolboxItem : ToolboxItem
{
private string text;
private delegate void SetTextMethodHandler(Control c, string text);
public TextToolboxItem(string text) : base()
{
this.text = text;
}
// ToolboxItem.CreateComponentsCore override to create the TextBox
// and link a method to set its Text property.
protected override IComponent[] CreateComponentsCore(IDesignerHost host)
{
System.Windows.Forms.TextBox textbox =
(TextBox)host.CreateComponent(typeof(TextBox));
// Because the designer resets the text of the textbox, use
// a SetTextMethodHandler to set the text to the value of
// the text data.
Control c = host.RootComponent as Control;
c.BeginInvoke(
new SetTextMethodHandler(OnSetText),
new object[] {textbox, text});
return new System.ComponentModel.IComponent[] { textbox };
}
// Method to set the text property of a TextBox after it is initialized.
private void OnSetText(Control c, string text)
{
c.Text = text;
}
}
}
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Drawing
Imports System.Drawing.Design
Imports System.Security.Permissions
Imports System.Windows.Forms
' Component that adds a "Text" data format ToolboxItemCreatorCallback
' to the Toolbox. This component uses a custom ToolboxItem that
' creates a TextBox containing the text data.
<PermissionSetAttribute(SecurityAction.Demand, Name:="FullTrust")> _
Public Class TextDataTextBoxComponent
Inherits System.ComponentModel.Component
Private creatorAdded As Boolean = False
Private ts As IToolboxService
Public Sub New()
End Sub
' ISite override to register TextBox creator
Public Overrides Property Site() As System.ComponentModel.ISite
Get
Return MyBase.Site
End Get
Set(ByVal Value As System.ComponentModel.ISite)
If (Value IsNot Nothing) Then
MyBase.Site = Value
If Not creatorAdded Then
AddTextTextBoxCreator()
End If
Else
If creatorAdded Then
RemoveTextTextBoxCreator()
End If
MyBase.Site = Value
End If
End Set
End Property
' Adds a "Text" data format creator to the toolbox that creates
' a textbox from a text fragment pasted to the toolbox.
Private Sub AddTextTextBoxCreator()
ts = CType(GetService(GetType(IToolboxService)), IToolboxService)
If (ts IsNot Nothing) Then
Dim textCreator As _
New ToolboxItemCreatorCallback(AddressOf Me.CreateTextBoxForText)
Try
ts.AddCreator( _
textCreator, _
"Text", _
CType(GetService(GetType(IDesignerHost)), IDesignerHost))
creatorAdded = True
Catch ex As Exception
MessageBox.Show(ex.ToString(), "Exception Information")
End Try
End If
End Sub
' Removes any "Text" data format creator from the toolbox.
Private Sub RemoveTextTextBoxCreator()
If (ts IsNot Nothing) Then
ts.RemoveCreator( _
"Text", _
CType(GetService(GetType(IDesignerHost)), IDesignerHost))
creatorAdded = False
End If
End Sub
' ToolboxItemCreatorCallback delegate format method to create
' the toolbox item.
Private Function CreateTextBoxForText( _
ByVal serializedObject As Object, _
ByVal format As String) As ToolboxItem
Dim o As New DataObject(CType(serializedObject, IDataObject))
Dim formats As String() = o.GetFormats()
If o.GetDataPresent("System.String", True) Then
Return New TextToolboxItem(CStr(o.GetData("System.String", True)))
End If
Return Nothing
End Function
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If creatorAdded Then
RemoveTextTextBoxCreator()
End If
End Sub
End Class
' Custom toolbox item creates a TextBox and sets its Text property
' to the constructor-specified text.
<PermissionSetAttribute(SecurityAction.Demand, Name:="FullTrust")> _
Public Class TextToolboxItem
Inherits System.Drawing.Design.ToolboxItem
Private [text] As String
Delegate Sub SetTextMethodHandler( _
ByVal c As Control, _
ByVal [text] As String)
Public Sub New(ByVal [text] As String)
Me.text = [text]
End Sub
' ToolboxItem.CreateComponentsCore override to create the TextBox
' and link a method to set its Text property.
<PermissionSetAttribute(SecurityAction.Demand, Name:="FullTrust")> _
Protected Overrides Function CreateComponentsCore(ByVal host As IDesignerHost) As IComponent()
Dim textbox As TextBox = CType(host.CreateComponent(GetType(TextBox)), TextBox)
' Because the designer resets the text of the textbox, use
' a SetTextMethodHandler to set the text to the value of
' the text data.
Dim c As Control = host.RootComponent
c.BeginInvoke( _
New SetTextMethodHandler(AddressOf OnSetText), _
New Object() {textbox, [text]})
Return New System.ComponentModel.IComponent() {textbox}
End Function
' Method to set the text property of a TextBox after it is initialized.
Private Sub OnSetText(ByVal c As Control, ByVal [text] As String)
c.Text = [text]
End Sub
End Class
備註
介面 IToolboxService 提供新增和移除工具箱專案和工具箱建立者回呼委派的屬性和方法、串行化和還原串行化工具箱專案，以及擷取工具箱狀態資訊和管理工具箱狀態。
您可以使用下列方法來擷取工具箱內容的相關信息：
屬性 CategoryNames 指出工具箱上目前可用的類別。
屬性 SelectedCategory 表示目前選取的工具箱類別。
方法會 GetToolboxItems 擷取工具箱上的專案，並選擇性地依指定的工具箱類別進行篩選。
方法會 GetSelectedToolboxItem 擷取目前選取 ToolboxItem的 。
方法 SetSelectedToolboxItem 會選擇指定 ToolboxItem 為目前工具箱項目的 。
方法 IsSupported 會指出指定的串行化物件，如果是 ToolboxItem，則由指定的設計工具主機支援，還是符合指定的屬性。
方法 IsToolboxItem 會指出指定的串行化物件是否為 ToolboxItem。
您可以使用下列方法來新增和移除工具箱專案：
方法 AddToolboxItem 會將 新增 ToolboxItem 至工具箱，如果不存在，請建立選擇性指定的類別。
方法會將 AddLinkedToolboxItem 只針對目前項目啟用的 新增 ToolboxItem 至工具箱。
方法 RemoveToolboxItem 會移除指定的 ToolboxItem。
方法 AddCreator 會將 ToolboxItemCreatorCallback 可將工具箱上 ToolboxItem儲存的某些數據類型轉換成 的委派。
方法 RemoveCreator 會移除指定數據類型的任何 ToolboxItemCreatorCallback 委派。
您可以使用下列方法來重新整理工具箱、標示工具箱專案，或將滑鼠游標設定為代表目前工具箱項目的游標：
方法會 Refresh 重新整理工具箱顯示，以反映工具箱專案的目前狀態。
方法 SelectedToolboxItemUsed 會發出工具箱的訊號，指出已使用選取的工具箱專案。
方法會將 SetCursor 滑鼠游標設定為代表目前工具箱專案的游標。
您可以使用工具箱，使用下列方法來串行化或還原串行化工具箱專案：
方法 DeserializeToolboxItem 會嘗試從指定的串行化工具箱項目物件傳回 ToolboxItem 。
方法 SerializeToolboxItem 會傳回表示指定 ToolboxItem之的串行化物件。
屬性
| CategoryNames |
取得目前在工具箱上所有工具分類的名稱。 |
| SelectedCategory |
從工具箱取得或設定目前選取的工具分類名稱。 |
