DrawToolTipEventHandler 대리자

정의

네임스페이스:

System.Windows.Forms

어셈블리:

System.Windows.Forms.dll

Draw의 ToolTip 이벤트를 처리할 메서드를 나타냅니다.

public delegate void DrawToolTipEventHandler(System::Object ^ sender, DrawToolTipEventArgs ^ e);

public delegate void DrawToolTipEventHandler(object? sender, DrawToolTipEventArgs e);

type DrawToolTipEventHandler = delegate of obj * DrawToolTipEventArgs -> unit

Public Delegate Sub DrawToolTipEventHandler(sender As Object, e As DrawToolTipEventArgs)

매개 변수

sender

Object

이벤트 소스입니다.

e

DrawToolTipEventArgs

이벤트 데이터를 포함하는 DrawToolTipEventArgs입니다.

예제

다음 코드 예제에서는 사용자 지정 그리기 방법은 ToolTip합니다. 이 예에서는 만듭니다는 ToolTip 3 연결 Button 컨트롤에 있는 Form. 예제에서는 합니다 OwnerDraw 속성을 true로 처리 합니다 Draw 이벤트입니다. 에 Draw 이벤트 처리기는 ToolTip 는 사용자 지정 단추에 따라 다르게 그려집니다를 ToolTip 나타난 것 처럼 표시 되는 DrawToolTipEventArgs.AssociatedControl 속성.

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

using namespace System;
using namespace System::Drawing;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::VisualStyles;

// Form for the ToolTip example.
public ref class ToolTipExampleForm: public System::Windows::Forms::Form
{
private:
   System::Windows::Forms::ToolTip^ toolTip1;
   System::Windows::Forms::Button^ button1;
   System::Windows::Forms::Button^ button2;
   System::Windows::Forms::Button^ button3;

public:
   ToolTipExampleForm()
   {
      // Create the ToolTip and set initial values.
      this->toolTip1 = gcnew System::Windows::Forms::ToolTip;
      this->toolTip1->AutoPopDelay = 5000;
      this->toolTip1->InitialDelay = 500;
      this->toolTip1->OwnerDraw = true;
      this->toolTip1->ReshowDelay = 10;
      this->toolTip1->Draw += gcnew DrawToolTipEventHandler( this, &ToolTipExampleForm::toolTip1_Draw );
      
      // Create button1 and set initial values.
      this->button1 = gcnew System::Windows::Forms::Button;
      this->button1->Location = System::Drawing::Point( 8, 8 );
      this->button1->Text = "Button 1";
      this->toolTip1->SetToolTip( this->button1, "Button1 tip text" );
      
      // Create button2 and set initial values.
      this->button2 = gcnew System::Windows::Forms::Button;
      this->button2->Location = System::Drawing::Point( 8, 32 );
      this->button2->Text = "Button 2";
      this->toolTip1->SetToolTip( this->button2, "Button2 tip text" );
      
      // Create button3 and set initial values.
      this->button3 = gcnew System::Windows::Forms::Button;
      this->button3->Location = System::Drawing::Point( 8, 56 );
      this->button3->Text = "Button 3";
      this->toolTip1->SetToolTip( this->button3, "Button3 tip text" );
      
      // Set up the Form.
      array<Control^>^temp0 = {this->button1,this->button2,this->button3};
      this->Controls->AddRange( temp0 );
      this->Text = "owner drawn ToolTip example";
   }

protected:

   ~ToolTipExampleForm()
   {
      if ( toolTip1 != nullptr )
      {
         delete toolTip1;
      }
   }

   // Handles drawing the ToolTip.
private:
   void toolTip1_Draw( System::Object^ /*sender*/, System::Windows::Forms::DrawToolTipEventArgs^ e )
   {
      // Draw the ToolTip differently depending on which 
      // control this ToolTip is for.
      // Draw a custom 3D border if the ToolTip is for button1.
      if ( e->AssociatedControl == button1 )
      {
         // Draw the standard background.
         e->DrawBackground();
         
         // Draw the custom border to appear 3-dimensional.
         array<Point>^ temp1 = {Point(0,e->Bounds.Height - 1),Point(0,0),Point(e->Bounds.Width - 1,0)};
         e->Graphics->DrawLines( SystemPens::ControlLightLight, temp1 );
         array<Point>^ temp2 = {Point(0,e->Bounds.Height - 1),Point(e->Bounds.Width - 1,e->Bounds.Height - 1),Point(e->Bounds.Width - 1,0)};
         e->Graphics->DrawLines( SystemPens::ControlDarkDark, temp2 );
         
         // Specify custom text formatting flags.
         TextFormatFlags sf = static_cast<TextFormatFlags>(TextFormatFlags::VerticalCenter | TextFormatFlags::HorizontalCenter | TextFormatFlags::NoFullWidthCharacterBreak);
         
         // Draw the standard text with customized formatting options.
         e->DrawText( sf );
      }
      // Draw a custom background and text if the ToolTip is for button2.
      else
      
      // Draw a custom background and text if the ToolTip is for button2.
      if ( e->AssociatedControl == button2 )
      {
         // Draw the custom background.
         e->Graphics->FillRectangle( SystemBrushes::ActiveCaption, e->Bounds );
         
         // Draw the standard border.
         e->DrawBorder();
         
         // Draw the custom text.
         // The using block will dispose the StringFormat automatically.
         StringFormat^ sf = gcnew StringFormat;
         try
         {
            sf->Alignment = StringAlignment::Center;
            sf->LineAlignment = StringAlignment::Center;
            sf->HotkeyPrefix = System::Drawing::Text::HotkeyPrefix::None;
            sf->FormatFlags = StringFormatFlags::NoWrap;
            System::Drawing::Font^ f = gcnew System::Drawing::Font( "Tahoma",9 );
            try
            {
               e->Graphics->DrawString( e->ToolTipText, f, SystemBrushes::ActiveCaptionText, e->Bounds, sf );
            }
            finally
            {
               if ( f )
                  delete safe_cast<IDisposable^>(f);
            }

         }
         finally
         {
            if ( sf )
               delete safe_cast<IDisposable^>(sf);
         }
      }
      // Draw the ToolTip using default values if the ToolTip is for button3.
      else if ( e->AssociatedControl == button3 )
      {
         e->DrawBackground();
         e->DrawBorder();
         e->DrawText();
      }
   }
};

// The main entry point for the application.

[STAThread]
int main()
{
   Application::Run( gcnew ToolTipExampleForm );
}

using System;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Forms.VisualStyles;

namespace ToolTipExample
{
    // Form for the ToolTip example.
    public class ToolTipExampleForm : System.Windows.Forms.Form
    {
        private System.Windows.Forms.ToolTip toolTip1;
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.Button button3;

        public ToolTipExampleForm()
        {
            // Create the ToolTip and set initial values.
            this.toolTip1 = new System.Windows.Forms.ToolTip();
            this.toolTip1.AutoPopDelay = 5000;
            this.toolTip1.InitialDelay = 500;
            this.toolTip1.OwnerDraw = true;
            this.toolTip1.ReshowDelay = 10;
            this.toolTip1.Draw += new DrawToolTipEventHandler(this.toolTip1_Draw);
            this.toolTip1.Popup += new PopupEventHandler(toolTip1_Popup);

            // Create button1 and set initial values.
            this.button1 = new System.Windows.Forms.Button();
            this.button1.Location = new System.Drawing.Point(8, 8);
            this.button1.Text = "Button 1";
            this.toolTip1.SetToolTip(this.button1, "Button1 tip text");

            // Create button2 and set initial values.
            this.button2 = new System.Windows.Forms.Button();
            this.button2.Location = new System.Drawing.Point(8, 32);
            this.button2.Text = "Button 2";
            this.toolTip1.SetToolTip(this.button2, "Button2 tip text");

            // Create button3 and set initial values.
            this.button3 = new System.Windows.Forms.Button();
            this.button3.Location = new System.Drawing.Point(8, 56);
            this.button3.Text = "Button 3";
            this.toolTip1.SetToolTip(this.button3, "Button3 tip text");

            // Set up the Form.
            this.Controls.AddRange(new Control[] {
                this.button1, this.button2, this.button3
            });
            this.Text = "owner drawn ToolTip example";
        }

        // Clean up any resources being used.        
        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                toolTip1.Dispose();
            }

            base.Dispose(disposing);
        }

        // The main entry point for the application.
        [STAThread]
        static void Main()
        {
            Application.Run(new ToolTipExampleForm());
        }

        // Determines the correct size for the button2 ToolTip.
        private void toolTip1_Popup(object sender, PopupEventArgs e)
        {
            if (e.AssociatedControl == button2)
            {
                using (Font f = new Font("Tahoma", 9))
                {
                    e.ToolTipSize = TextRenderer.MeasureText(
                        toolTip1.GetToolTip(e.AssociatedControl), f);
                }
            }
        }

        // Handles drawing the ToolTip.
        private void toolTip1_Draw(System.Object sender, 
            System.Windows.Forms.DrawToolTipEventArgs e)
        {
            // Draw the ToolTip differently depending on which 
            // control this ToolTip is for.
            // Draw a custom 3D border if the ToolTip is for button1.
            if (e.AssociatedControl == button1)
            {
                // Draw the standard background.
                e.DrawBackground();

                // Draw the custom border to appear 3-dimensional.
                e.Graphics.DrawLines(SystemPens.ControlLightLight, new Point[] {
                    new Point (0, e.Bounds.Height - 1), 
                    new Point (0, 0), 
                    new Point (e.Bounds.Width - 1, 0)
                });
                e.Graphics.DrawLines(SystemPens.ControlDarkDark, new Point[] {
                    new Point (0, e.Bounds.Height - 1), 
                    new Point (e.Bounds.Width - 1, e.Bounds.Height - 1), 
                    new Point (e.Bounds.Width - 1, 0)
                });

                // Specify custom text formatting flags.
                TextFormatFlags sf = TextFormatFlags.VerticalCenter |
                                     TextFormatFlags.HorizontalCenter |
                                     TextFormatFlags.NoFullWidthCharacterBreak;

                // Draw the standard text with customized formatting options.
                e.DrawText(sf);
            }
            // Draw a custom background and text if the ToolTip is for button2.
            else if (e.AssociatedControl == button2)
            {
                // Draw the custom background.
                e.Graphics.FillRectangle(SystemBrushes.ActiveCaption, e.Bounds);

                // Draw the standard border.
                e.DrawBorder();

                // Draw the custom text.
                // The using block will dispose the StringFormat automatically.
                using (StringFormat sf = new StringFormat())
                {
                    sf.Alignment = StringAlignment.Center;
                    sf.LineAlignment = StringAlignment.Center;
                    sf.HotkeyPrefix = System.Drawing.Text.HotkeyPrefix.None;
                    sf.FormatFlags = StringFormatFlags.NoWrap;
                    using (Font f = new Font("Tahoma", 9))
                    {
                        e.Graphics.DrawString(e.ToolTipText, f, 
                            SystemBrushes.ActiveCaptionText, e.Bounds, sf);
                    }
                }
            }
            // Draw the ToolTip using default values if the ToolTip is for button3.
            else if (e.AssociatedControl == button3)
            {
                e.DrawBackground();
                e.DrawBorder();
                e.DrawText();
            }
        }
    }
}

Imports System.Drawing
Imports System.Windows.Forms
Imports System.Windows.Forms.VisualStyles

Public Module ToolTipExampleApp
    ' The main entry point for the application.
    <STAThread()> _
    Sub Main()
        Application.Run(New ToolTipExampleForm)
    End Sub
End Module

' Form for the ToolTip example.
Public Class ToolTipExampleForm
    Inherits System.Windows.Forms.Form

    Private WithEvents toolTip1 As System.Windows.Forms.ToolTip
    Private WithEvents button1 As System.Windows.Forms.Button
    Private WithEvents button2 As System.Windows.Forms.Button
    Private WithEvents button3 As System.Windows.Forms.Button

    Public Sub New()
        ' Create the ToolTip and set initial values.
        Me.toolTip1 = New System.Windows.Forms.ToolTip
        Me.toolTip1.AutoPopDelay = 5000
        Me.toolTip1.InitialDelay = 500
        Me.toolTip1.OwnerDraw = True
        Me.toolTip1.ReshowDelay = 10

        ' Create button1 and set initial values.
        Me.button1 = New System.Windows.Forms.Button
        Me.button1.Location = New System.Drawing.Point(8, 8)
        Me.button1.Text = "Button 1"
        Me.toolTip1.SetToolTip(Me.button1, "Button1 tip text")

        ' Create button2 and set initial values.
        Me.button2 = New System.Windows.Forms.Button
        Me.button2.Location = New System.Drawing.Point(8, 32)
        Me.button2.Text = "Button 2"
        Me.toolTip1.SetToolTip(Me.button2, "Button2 tip text")

        ' Create button3 and set initial values.
        Me.button3 = New System.Windows.Forms.Button
        Me.button3.Location = New System.Drawing.Point(8, 56)
        Me.button3.Text = "Button 3"
        Me.toolTip1.SetToolTip(Me.button3, "Button3 tip text")

        ' Set up the Form.
        Me.Controls.AddRange(New Control() {Me.button1, _
                                            Me.button2, _
                                            Me.button3})
        Me.Text = "owner drawn ToolTip example"
    End Sub

    ' Clean up any resources being used.        
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If (disposing) Then
            toolTip1.Dispose()
        End If

        MyBase.Dispose(disposing)
    End Sub

    ' Determines the correct size for the button2 ToolTip.
    Private Sub toolTip1_Popup(ByVal sender As System.Object, _
        ByVal e As PopupEventArgs) Handles toolTip1.Popup

        If e.AssociatedControl Is button2 Then

            Dim f As New Font("Tahoma", 9)
            Try
                e.ToolTipSize = TextRenderer.MeasureText( _
                    toolTip1.GetToolTip(e.AssociatedControl), f)
            Finally
                f.Dispose()
            End Try

        End If
    End Sub

    ' Handles drawing the ToolTip.
    Private Sub toolTip1_Draw(ByVal sender As System.Object, _
        ByVal e As DrawToolTipEventArgs) Handles toolTip1.Draw
        ' Draw the ToolTip differently depending on which 
        ' control this ToolTip is for.

        ' Draw a custom 3D border if the ToolTip is for button1.
        If (e.AssociatedControl Is button1) Then
            ' Draw the standard background.
            e.DrawBackground()

            ' Draw the custom border to appear 3-dimensional.
            e.Graphics.DrawLines( _
                SystemPens.ControlLightLight, New Point() { _
                New Point(0, e.Bounds.Height - 1), _
                New Point(0, 0), _
                New Point(e.Bounds.Width - 1, 0)})
            e.Graphics.DrawLines( _
                SystemPens.ControlDarkDark, New Point() { _
                New Point(0, e.Bounds.Height - 1), _
                New Point(e.Bounds.Width - 1, e.Bounds.Height - 1), _
                New Point(e.Bounds.Width - 1, 0)})

            ' Specify custom text formatting flags.
            Dim sf As TextFormatFlags = TextFormatFlags.VerticalCenter Or _
                                 TextFormatFlags.HorizontalCenter Or _
                                 TextFormatFlags.NoFullWidthCharacterBreak

            ' Draw standard text with customized formatting options.
            e.DrawText(sf)
        ElseIf (e.AssociatedControl Is button2) Then
            ' Draw a custom background and text if the ToolTip is for button2.

            ' Draw the custom background.
            e.Graphics.FillRectangle(SystemBrushes.ActiveCaption, e.Bounds)

            ' Draw the standard border.
            e.DrawBorder()

            ' Draw the custom text.
            Dim sf As StringFormat = New StringFormat
            Try
                sf.Alignment = StringAlignment.Center
                sf.LineAlignment = StringAlignment.Center
                sf.HotkeyPrefix = System.Drawing.Text.HotkeyPrefix.None
                sf.FormatFlags = StringFormatFlags.NoWrap

                Dim f As Font = New Font("Tahoma", 9)
                Try
                    e.Graphics.DrawString(e.ToolTipText, f, _
                        SystemBrushes.ActiveCaptionText, _
                        RectangleF.op_Implicit(e.Bounds), sf)
                Finally
                    f.Dispose()
                End Try
            Finally
                sf.Dispose()
            End Try
        ElseIf (e.AssociatedControl Is button3) Then
            ' Draw the ToolTip using default values if the ToolTip is for button3.
            e.DrawBackground()
            e.DrawBorder()
            e.DrawText()
        End If
    End Sub
End Class

설명

ToolTip.Draw 이벤트를 발생 합니다 ToolTip 때 클래스는 ToolTip 그려집니다 및 ToolTip.OwnerDraw 속성 값이 true합니다. DrawToolTipEventArgs 그리는 데 필요한 모든 정보를 포함 하는 클래스를 ToolTip, 도구 설명 텍스트를 포함 하 여를 Rectangle, 및 Graphics 개체를 그리기 수행 해야 합니다. 도구 설명의 모양을 사용자 지정을 사용 하 여는 Rectangle 도구 설명의 범위를 확인 하 고 Graphics 에 사용자 지정된 그리기를 수행 하는 개체입니다. 범위를 확장할 수는 ToolTip 처리 하 여 표시 되기 전에 Popup 이벤트입니다.

DrawToolTipEventHandler 대리자를 만들 때, 이벤트를 처리할 메서드를 식별합니다. 이벤트를 이벤트 처리기와 연결하려면 대리자의 인스턴스를 해당 이벤트에 추가합니다. 대리자를 제거하지 않는 경우 이벤트가 발생할 때마다 이벤트 처리기가 호출됩니다. 이벤트 처리기 대리자에 대 한 자세한 내용은 참조 하세요. 이벤트 처리 및 발생합니다.

확장 메서드