Glyph.GetHitTest(Point) Método

  • Referência

Definição

Namespace:
System.Windows.Forms.Design.Behavior
Assembly:
System.Design.dll
Assembly:
System.Windows.Forms.Design.dll

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);
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 a ter o clique testado.

Retornos

Cursor

Um Cursor se o Glyph for associado ao p; caso contrário, null.

Exemplos

O exemplo a seguir demonstra como substituir o GetHitTest 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 clique. Dado qualquer ponto, se o Glyph tiver decidido estar envolvido com esse local, ele precisará retornar um válido Cursor. Caso contrário, retornar null fará com que o BehaviorService ignore o local.

Aplica-se a

Confira também