Glyph Class
Represents a single user interface (UI) entity managed by an Adorner.
System.Windows.Forms.Design.Behavior::Glyph
System.Windows.Forms.Design.Behavior::ComponentGlyph
Assembly: System.Design (in System.Design.dll)
The Glyph type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetHitTest | Provides hit test logic. |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | Paint | Provides paint logic. |
![]() | SetBehavior | Changes the Behavior associated with the Glyph. |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
The sole purpose of a Glyph is to paint and hit test. A Glyph does not have a window handle (HWND), as it is rendered on the adorner window control of the BehaviorService. Each Glyph can have a Behavior associated with it. A successfully hit-tested Glyph has the opportunity to push a new or different Behavior onto the behavior stack of the BehaviorService.
For more information, see Behavior Service Overview.
The following example demonstrates how to create your own Glyph based class with Behavior associated with it. This code example is part of a larger example provided for the BehaviorService class.
// 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);
}
};
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
