Glyph.GetHitTest(Point) Méthode

Définition

Espace de noms:

System.Windows.Forms.Design.Behavior

Assembly:

System.Windows.Forms.Design.dll

Source:

Glyph.cs

Fournit une logique de test de positionnement.

public:
 abstract System::Windows::Forms::Cursor ^ GetHitTest(System::Drawing::Point p);

public abstract System.Windows.Forms.Cursor? GetHitTest(System.Drawing.Point p);

abstract member GetHitTest : System.Drawing.Point -> System.Windows.Forms.Cursor

Public MustOverride Function GetHitTest (p As Point) As Cursor

Paramètres

p

Point

Point de positionnement.

Retours

Cursor

A Cursor si l’objet Glyph est associé p; sinon, null.

Exemples

L’exemple suivant montre comment remplacer le GetHitTest point pour voir si le point se trouve dans ce glyphe. Cet exemple de code fait partie d’un exemple plus grand fourni pour la BehaviorService classe.

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 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 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

Remarques

La GetHitTest méthode est une abstract méthode qui force Glyph les implémentations à fournir une logique de test de positionnement. Compte tenu d’un point quelconque, si l’utilisateur Glyph a décidé d’être impliqué dans cet emplacement, il devra retourner une valeur valide Cursor. Sinon, le retour null entraîne l’ignorer BehaviorService .

Voir aussi

• Behavior
• Adorner
• BehaviorService
• Cursor