IDesignerOptionService Interfaccia

Definizione

public interface class IDesignerOptionService

public interface IDesignerOptionService

type IDesignerOptionService = interface

Public Interface IDesignerOptionService

Derivato

System.ComponentModel.Design.DesignerOptionService

Esempio

Nell'esempio di codice seguente viene illustrato l'accesso all'oggetto IDesignerOptionService per visualizzare i valori correnti delle opzioni standard.

#using <System.Windows.Forms.dll>
#using <System.Data.dll>
#using <System.Drawing.dll>
#using <System.dll>

using namespace System;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Drawing;
using namespace System::Data;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::Design;

namespace IDesignerOptionServiceExample
{
   // This control demonstrates retrieving the standard 
   // designer option service values in design mode.
   public ref class IDesignerOptionServiceControl: public System::Windows::Forms::UserControl
   {
   private:
      IDesignerOptionService^ designerOptionService;

   public:
      IDesignerOptionServiceControl()
      {
         this->BackColor = Color::Beige;
         this->Size = System::Drawing::Size( 404, 135 );
      }

      property System::ComponentModel::ISite^ Site 
      {
         virtual System::ComponentModel::ISite^ get() override
         {
            return __super::Site;
         }

         virtual void set( System::ComponentModel::ISite^ value ) override
         {
            __super::Site = value;
            
            // If siting component, attempt to obtain an IDesignerOptionService.
            if ( __super::Site != nullptr )
                        designerOptionService = dynamic_cast<IDesignerOptionService^>(this->GetService( IDesignerOptionService::typeid ));
         }
      }

   protected:

      // Displays control information and current IDesignerOptionService 
      // values, if available.

      virtual void OnPaint( System::Windows::Forms::PaintEventArgs^ e ) override
      {
         e->Graphics->DrawString( "IDesignerOptionServiceControl", gcnew System::Drawing::Font( "Arial",9 ), gcnew SolidBrush( Color::Blue ), 4, 4 );
         if ( this->DesignMode )
                  e->Graphics->DrawString( "Currently in design mode", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 4, 18 );
         else
                  e->Graphics->DrawString( "Not in design mode. Cannot access IDesignerOptionService.", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Red ), 4, 18 );

         if ( __super::Site != nullptr && designerOptionService != nullptr )
         {
            e->Graphics->DrawString( "IDesignerOptionService provides access to the table of option values listed when", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 4, 38 );
            e->Graphics->DrawString( "the Windows Forms Designer\\General tab of the Tools\\Options menu is selected.", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 4, 50 );
            e->Graphics->DrawString( "Table of standard value names and current values", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Red ), 4, 76 );
            
            // Displays a table of the standard value names and current values.
            int ypos = 90;
            
            // Obtains and shows the size of the standard design-mode grid square.
            System::Drawing::Size size =  *dynamic_cast<System::Drawing::Size^>(designerOptionService->GetOptionValue( "WindowsFormsDesigner\\General", "GridSize" ));
            e->Graphics->DrawString( "GridSize", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 4, (float)ypos );
            e->Graphics->DrawString( size.ToString(), gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 100, (float)ypos );
            ypos += 12;

            // Obtains and shows whether the design mode surface grid is enabled.
            bool showGrid =  *dynamic_cast<bool^>(designerOptionService->GetOptionValue( "WindowsFormsDesigner\\General", "ShowGrid" ));
            e->Graphics->DrawString( "ShowGrid", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 4, (float)ypos );
            e->Graphics->DrawString( showGrid.ToString(), gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 100, (float)ypos );
            ypos += 12;

            // Obtains and shows whether components should be aligned with the surface grid.
            bool snapToGrid =  *dynamic_cast<bool^>(designerOptionService->GetOptionValue( "WindowsFormsDesigner\\General", "SnapToGrid" ));
            e->Graphics->DrawString( "SnapToGrid", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 4, (float)ypos );
            e->Graphics->DrawString( snapToGrid.ToString(), gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 100, (float)ypos );
         }
      }
   };
}

using System;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
using System.Windows.Forms.Design;

namespace IDesignerOptionServiceExample
{
    // This control demonstrates retrieving the standard 
    // designer option service values in design mode.
    public class IDesignerOptionServiceControl : System.Windows.Forms.UserControl
    {		
        private IDesignerOptionService designerOptionService;

        public IDesignerOptionServiceControl()
        {
            this.BackColor = Color.Beige;
                    this.Size = new Size(404, 135);
        }
        
        public override System.ComponentModel.ISite Site
        {
            get
            {
                return base.Site;
            }
            set
            {
                base.Site = value;

                // If siting component, attempt to obtain an IDesignerOptionService.
                if( base.Site != null )                            
                    designerOptionService = (IDesignerOptionService)this.GetService(typeof(IDesignerOptionService));                                   
            }
        }

        // Displays control information and current IDesignerOptionService 
        // values, if available.
        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
        {
            e.Graphics.DrawString("IDesignerOptionServiceControl", new Font("Arial", 9), new SolidBrush(Color.Blue), 4, 4);
            if( this.DesignMode )
                e.Graphics.DrawString("Currently in design mode", new Font("Arial", 8), new SolidBrush(Color.Black), 4, 18);
            else
                e.Graphics.DrawString("Not in design mode. Cannot access IDesignerOptionService.", new Font("Arial", 8), new SolidBrush(Color.Red), 4, 18);
            
            if( base.Site != null && designerOptionService != null )
            {
                e.Graphics.DrawString("IDesignerOptionService provides access to the table of option values listed when", new Font("Arial", 8), new SolidBrush(Color.Black), 4, 38);
                e.Graphics.DrawString("the Windows Forms Designer\\General tab of the Tools\\Options menu is selected.", new Font("Arial", 8), new SolidBrush(Color.Black), 4, 50);                
                
                e.Graphics.DrawString("Table of standard value names and current values", new Font("Arial", 8), new SolidBrush(Color.Red), 4, 76);
                
                // Displays a table of the standard value names and current values.
                int ypos = 90;

                // Obtains and shows the size of the standard design-mode grid square.
                Size size = (Size)designerOptionService.GetOptionValue("WindowsFormsDesigner\\General", "GridSize");
                e.Graphics.DrawString("GridSize", new Font("Arial", 8), new SolidBrush(Color.Black), 4, ypos);
                e.Graphics.DrawString(size.ToString(), new Font("Arial", 8), new SolidBrush(Color.Black), 100, ypos);
                ypos+=12;
                
                // Obtains and shows whether the design mode surface grid is enabled.
                bool showGrid = (bool)designerOptionService.GetOptionValue("WindowsFormsDesigner\\General", "ShowGrid");
                e.Graphics.DrawString("ShowGrid", new Font("Arial", 8), new SolidBrush(Color.Black), 4, ypos);
                e.Graphics.DrawString(showGrid.ToString(), new Font("Arial", 8), new SolidBrush(Color.Black), 100, ypos);
                ypos+=12;
                
                // Obtains and shows whether components should be aligned with the surface grid.
                bool snapToGrid = (bool)designerOptionService.GetOptionValue("WindowsFormsDesigner\\General", "SnapToGrid");
                e.Graphics.DrawString("SnapToGrid", new Font("Arial", 8), new SolidBrush(Color.Black), 4, ypos);
                e.Graphics.DrawString(snapToGrid.ToString(), new Font("Arial", 8), new SolidBrush(Color.Black), 100, ypos);                
            }
        }
    }
}

Imports System.Collections
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Drawing
Imports System.Data
Imports System.Windows.Forms
Imports System.Windows.Forms.Design

' This control demonstrates retrieving the standard 
' designer option service values in design mode.
Public Class IDesignerOptionServiceControl
    Inherits System.Windows.Forms.UserControl
    Private designerOptionService As IDesignerOptionService

    Public Sub New()
        Me.BackColor = Color.Beige
        Me.Size = New Size(404, 135)
    End Sub

    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 siting component, attempt to obtain an IDesignerOptionService.
            If (MyBase.Site IsNot Nothing) Then
                designerOptionService = CType(Me.GetService(GetType(IDesignerOptionService)), IDesignerOptionService)
            End If
        End Set
    End Property

    ' Displays control information and current IDesignerOptionService 
    ' values, if available.
    Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
        e.Graphics.DrawString("IDesignerOptionServiceControl", New Font("Arial", 9), New SolidBrush(Color.Blue), 4, 4)
        If Me.DesignMode Then
            e.Graphics.DrawString("Currently in design mode", New Font("Arial", 8), New SolidBrush(Color.Black), 4, 18)
        Else
            e.Graphics.DrawString("Not in design mode. Cannot access IDesignerOptionService.", New Font("Arial", 8), New SolidBrush(Color.Red), 4, 18)
        End If
        If (MyBase.Site IsNot Nothing) AndAlso (designerOptionService IsNot Nothing) Then
            e.Graphics.DrawString("IDesignerOptionService provides access to the table of option values listed when", New Font("Arial", 8), New SolidBrush(Color.Black), 4, 38)
            e.Graphics.DrawString("the Windows Forms Designer\General tab of the Tools\Options menu is selected.", New Font("Arial", 8), New SolidBrush(Color.Black), 4, 50)

            e.Graphics.DrawString("Table of standard value names and current values", New Font("Arial", 8), New SolidBrush(Color.Red), 4, 76)

            ' Displays a table of the standard value names and current values.
            Dim ypos As Integer = 90

            ' Obtains and shows the size of the standard design-mode grid square.
            Dim size As Size = CType(designerOptionService.GetOptionValue("WindowsFormsDesigner\General", "GridSize"), Size)
            e.Graphics.DrawString("GridSize", New Font("Arial", 8), New SolidBrush(Color.Black), 4, ypos)
            e.Graphics.DrawString(size.ToString(), New Font("Arial", 8), New SolidBrush(Color.Black), 100, ypos)
            ypos += 12

            ' Obtaisn and shows whether the design mode surface grid is enabled.
            Dim showGrid As Boolean = CBool(designerOptionService.GetOptionValue("WindowsFormsDesigner\General", "ShowGrid"))
            e.Graphics.DrawString("ShowGrid", New Font("Arial", 8), New SolidBrush(Color.Black), 4, ypos)
            e.Graphics.DrawString(showGrid.ToString(), New Font("Arial", 8), New SolidBrush(Color.Black), 100, ypos)
            ypos += 12

            ' Obtains and shows whether components should be aligned with the surface grid.
            Dim snapToGrid As Boolean = CBool(designerOptionService.GetOptionValue("WindowsFormsDesigner\General", "SnapToGrid"))
            e.Graphics.DrawString("SnapToGrid", New Font("Arial", 8), New SolidBrush(Color.Black), 4, ypos)
            e.Graphics.DrawString(snapToGrid.ToString(), New Font("Arial", 8), New SolidBrush(Color.Black), 100, ypos)
        End If
    End Sub

End Class

Commenti

IDesignerOptionServicefornisce un'interfaccia che può essere usata per recuperare e aggiornare i valori delle opzioni di Windows Forms Designer elencate nella finestra di dialogo visualizzata dal comando Opzioni del menu Strumenti dell'ambiente di sviluppo di Visual Studio. Il GetOptionValue metodo recupera il valore di un'opzione specificata. Il SetOptionValue metodo imposta un valore specificato per un'opzione specificata.

Metodi

Si applica a

Vedi anche

• IDesigner
• DesignerOptionService