Glyph.GetHitTest(Point) Método

Definição

Namespace:

System.Windows.Forms.Design.Behavior

Assembly:

System.Windows.Forms.Design.dll

Origem:

Glyph.cs

Fornece lógica de teste de clique.

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

Parâmetros

p

Point

Um ponto para o teste de ocorrência.

Retornos

Cursor

A Cursor se estiver Glyph associado pa; caso contrário, null.

Exemplos

O exemplo a seguir demonstra como substituir o GetHitTest ponto para ver se o ponto está dentro desse glifo. Este exemplo de código faz parte de um exemplo maior fornecido para a 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

Comentários

O GetHitTest método é um abstract método que força as Glyph implementações a fornecer lógica de teste de ocorrência. Dado qualquer ponto, se ele Glyph decidiu estar envolvido com esse local, ele precisará retornar um valor válido Cursor. Caso contrário, retornar null fará com que o BehaviorService local seja ignorado.

Confira também

• Behavior
• Adorner
• BehaviorService
• Cursor