Bagikan melalui

Glyph Kelas

  • Referensi

Definisi

Ruang nama:
System.Windows.Forms.Design.Behavior
Rakitan:
System.Design.dll
Rakitan:
System.Windows.Forms.Design.dll

Mewakili entitas antarmuka pengguna tunggal (UI) yang Adornerdikelola oleh .

public ref class Glyph abstract
public abstract class Glyph
type Glyph = class
Public MustInherit Class Glyph
Warisan
Object
Glyph
Turunan

Contoh

Contoh berikut menunjukkan cara membuat kelas berbasis Anda sendiri Glyph dengan yang terkait dengannya Behavior . Contoh kode ini adalah bagian dari contoh yang lebih besar yang disediakan untuk BehaviorService kelas .


// By providing our own behavior we can do something
// interesting when the user clicks or manipulates our glyph.
public  ref class DemoBehavior : public Behavior
{
public:
    bool OnMouseUp(Glyph^ g, MouseButtons^ button)
    {
        MessageBox::Show("Hey, you clicked the mouse here");

        // indicating we processed this event.
        return true;
    }
};

public ref class DemoGlyph : public Glyph
{
    Control^ control;
    BehaviorService^ behavior;

public:
    DemoGlyph(BehaviorService^ behavior, Control^ control):
      Glyph(gcnew BehaviorServiceSample::DemoBehavior)
      {
          this->behavior = behavior;
          this->control = control;
      }

public:
    virtual property Rectangle Bounds
    {
        Rectangle get() override
        {
            // Create a glyph that is 10x10 and sitting
            // in the middle of the control.  Glyph coordinates
            // are in adorner window coordinates, so we must map
            // using the behavior service.
            Point edge = behavior->ControlToAdornerWindow(control);
            Size size = control->Size;
            Point center = Point(edge.X + (size.Width / 2),
                edge.Y + (size.Height / 2));

            Rectangle bounds = Rectangle(center.X - 5,
                center.Y - 5, 10, 10);

            return bounds;
        }
    }

public:
    virtual Cursor^ GetHitTest(Point p) override
    {
        // GetHitTest is called to see if the point is
        // within this glyph.  This gives us a chance to decide
        // what cursor to show.  Returning null from here means
        // the mouse pointer is not currently inside of the
        // glyph.  Returning a valid cursor here indicates the
        // pointer is inside the glyph, and also enables our
        // Behavior property as the active behavior.
        if (Bounds.Contains(p))
        {
            return Cursors::Hand;
        }
        return nullptr;
    }

public:
    virtual void Paint(PaintEventArgs^ pe) override
    {
        // Draw our glyph.  Our's is simple:  a blue ellipse.
        pe->Graphics->FillEllipse(Brushes::Blue, Bounds);
    }
};

class MyGlyph : Glyph
{
    Control control;
    BehaviorService behaviorSvc;

    public MyGlyph(BehaviorService behaviorSvc, Control control) : 
        base(new MyBehavior())
    {
        this.behaviorSvc = behaviorSvc;
        this.control = control;
    }

    public override Rectangle Bounds
    {
        get
        {
            // Create a glyph that is 10x10 and sitting
            // in the middle of the control.  Glyph coordinates
            // are in adorner window coordinates, so we must map
            // using the behavior service.
            Point edge = behaviorSvc.ControlToAdornerWindow(control);
            Size size = control.Size;
            Point center = new Point(edge.X + (size.Width / 2), 
                edge.Y + (size.Height / 2));

            Rectangle bounds = new Rectangle(
                center.X - 5,
                center.Y - 5,
                10,
                10);

            return bounds;
        }
    }

    public override Cursor GetHitTest(Point p)
    {
        // GetHitTest is called to see if the point is
        // within this glyph.  This gives us a chance to decide
        // what cursor to show.  Returning null from here means
        // the mouse pointer is not currently inside of the glyph.
        // Returning a valid cursor here indicates the pointer is
        // inside the glyph, and also enables our Behavior property
        // as the active behavior.
        if (Bounds.Contains(p))
        {
            return Cursors.Hand;
        }

        return null;
    }

    public override void Paint(PaintEventArgs pe)
    {
        // Draw our glyph. It is simply a blue ellipse.
        pe.Graphics.FillEllipse(Brushes.Blue, Bounds);
    }

    // By providing our own behavior we can do something interesting
    // when the user clicks or manipulates our glyph.
    class MyBehavior : Behavior
    {
        public override bool OnMouseUp(Glyph g, MouseButtons button)
        {
            MessageBox.Show("Hey, you clicked the mouse here");
            return true; // indicating we processed this event.
        }
    }
}

Class MyGlyph
    Inherits Glyph
    Private control As Control
    Private behaviorSvc As _
        System.Windows.Forms.Design.Behavior.BehaviorService

    Public Sub New(ByVal behaviorSvc As _
        System.Windows.Forms.Design.Behavior.BehaviorService, _
        ByVal control As Control)

        MyBase.New(New MyBehavior())
        Me.behaviorSvc = behaviorSvc
        Me.control = control
    End Sub

    Public Overrides ReadOnly Property Bounds() As Rectangle
        Get
            ' Create a glyph that is 10x10 and sitting
            ' in the middle of the control.  Glyph coordinates
            ' are in adorner window coordinates, so we must map
            ' using the behavior service.
            Dim edge As Point = behaviorSvc.ControlToAdornerWindow(control)
            Dim size As Size = control.Size
            Dim center As New Point(edge.X + size.Width / 2, edge.Y + _
                size.Height / 2)

            Dim bounds1 As New Rectangle(center.X - 5, center.Y - 5, 10, 10)

            Return bounds1
        End Get
    End Property

    Public Overrides Function GetHitTest(ByVal p As Point) As Cursor
        ' GetHitTest is called to see if the point is
        ' within this glyph.  This gives us a chance to decide
        ' what cursor to show.  Returning null from here means
        ' the mouse pointer is not currently inside of the glyph.
        ' Returning a valid cursor here indicates the pointer is
        ' inside the glyph,and also enables our Behavior property
        ' as the active behavior.
        If Bounds.Contains(p) Then
            Return Cursors.Hand
        End If

        Return Nothing

    End Function


    Public Overrides Sub Paint(ByVal pe As PaintEventArgs)
        ' Draw our glyph.  It is simply a blue ellipse.
        pe.Graphics.FillEllipse(Brushes.Blue, Bounds)

    End Sub

    ' By providing our own behavior we can do something interesting
    ' when the user clicks or manipulates our glyph.

    Class MyBehavior
        Inherits System.Windows.Forms.Design.Behavior.Behavior

        Public Overrides Function OnMouseUp(ByVal g As Glyph, _
            ByVal button As MouseButtons) As Boolean
            MessageBox.Show("Hey, you clicked the mouse here")
            Return True
            ' indicating we processed this event.
        End Function 'OnMouseUp
    End Class

End Class

Keterangan

Tujuan tunggal dari adalah Glyph untuk melukis dan memukul tes. Glyph tidak memiliki handel jendela (HWND), karena dirender pada kontrol jendela adorner dari BehaviorService. Masing-masing Glyph dapat memiliki yang Behavior terkait dengannya. Yang berhasil diuji Glyph temu memiliki kesempatan untuk mendorong yang baru atau berbeda Behavior ke tumpukan BehaviorServiceperilaku .

Untuk informasi selengkapnya, lihat Gambaran Umum Layanan Perilaku.

Konstruktor

Glyph(Behavior)

Menginisialisasi instans baru kelas Glyph.

Properti

Behavior

Mendapatkan yang Behavior terkait dengan Glyph.
Bounds

Mendapatkan batasan Glyph.

Metode

Equals(Object)

Menentukan apakah objek yang ditentukan sama dengan objek saat ini.

(Diperoleh dari Object)
GetHashCode()

Berfungsi sebagai fungsi hash default.

(Diperoleh dari Object)
GetHitTest(Point)

Menyediakan logika uji hit.
GetType()

Mendapatkan instans Type saat ini.

(Diperoleh dari Object)
MemberwiseClone()

Membuat salinan dangkal dari yang saat ini Object.

(Diperoleh dari Object)
Paint(PaintEventArgs)

Menyediakan logika cat.
SetBehavior(Behavior)

Mengubah yang Behavior terkait dengan Glyph.
ToString()

Mengembalikan string yang mewakili objek saat ini.

(Diperoleh dari Object)

Berlaku untuk

Lihat juga