ListView.DrawColumnHeader ListView.DrawColumnHeader ListView.DrawColumnHeader ListView.DrawColumnHeader Event

Definición

Se produce cuando se dibuja la vista de detalles de un control ListView y el valor de la propiedad OwnerDraw se ha establecido en true.Occurs when the details view of a ListView is drawn and the OwnerDraw property is set to true.

public:
 event System::Windows::Forms::DrawListViewColumnHeaderEventHandler ^ DrawColumnHeader;
public event System.Windows.Forms.DrawListViewColumnHeaderEventHandler DrawColumnHeader;
member this.DrawColumnHeader : System.Windows.Forms.DrawListViewColumnHeaderEventHandler 
Public Custom Event DrawColumnHeader As DrawListViewColumnHeaderEventHandler 

Ejemplos

En el ejemplo de código siguiente se proporciona una DrawColumnHeader implementación de un controlador de eventos.The following code example provides an implementation of a DrawColumnHeader event handler. Para obtener el ejemplo completo, incluida la implementación del DrawSubItem controlador de eventos, vea OwnerDraw el tema de referencia.For the complete example, including the implementation of the DrawSubItem event handler, see the OwnerDraw reference topic.

// Draws column headers.
private void listView1_DrawColumnHeader(object sender,
    DrawListViewColumnHeaderEventArgs e)
{
    using (StringFormat sf = new StringFormat())
    {
        // Store the column text alignment, letting it default
        // to Left if it has not been set to Center or Right.
        switch (e.Header.TextAlign)
        {
            case HorizontalAlignment.Center:
                sf.Alignment = StringAlignment.Center;
                break;
            case HorizontalAlignment.Right:
                sf.Alignment = StringAlignment.Far;
                break;
        }

        // Draw the standard header background.
        e.DrawBackground();

        // Draw the header text.
        using (Font headerFont =
                    new Font("Helvetica", 10, FontStyle.Bold))
        {
            e.Graphics.DrawString(e.Header.Text, headerFont,
                Brushes.Black, e.Bounds, sf);
        }
    }
    return;
}
' Draws column headers.
Private Sub listView1_DrawColumnHeader(ByVal sender As Object, _
    ByVal e As DrawListViewColumnHeaderEventArgs) _
    Handles listView1.DrawColumnHeader

    Dim sf As New StringFormat()
    Try

        ' Store the column text alignment, letting it default
        ' to Left if it has not been set to Center or Right.
        Select Case e.Header.TextAlign
            Case HorizontalAlignment.Center
                sf.Alignment = StringAlignment.Center
            Case HorizontalAlignment.Right
                sf.Alignment = StringAlignment.Far
        End Select

        ' Draw the standard header background.
        e.DrawBackground()

        ' Draw the header text.
        Dim headerFont As New Font("Helvetica", 10, FontStyle.Bold)
        Try
            e.Graphics.DrawString(e.Header.Text, headerFont, _
                Brushes.Black, e.Bounds, sf)
        Finally
            headerFont.Dispose()
        End Try

    Finally
        sf.Dispose()
    End Try

End Sub

Comentarios

Este evento permite personalizar la apariencia de un ListView control mediante el dibujo del propietario.This event lets you customize the appearance of a ListView control using owner drawing. Solo se genera cuando OwnerDraw la propiedad está establecida en true y la View propiedad se establece en View.Details.It is raised only when the OwnerDraw property is set to true and the View property is set to View.Details. Este evento puede producirse en cada encabezado de columna del control.This event can occur for each column header in the control. Para obtener más información sobre el dibujo del propietario OwnerDraw , vea el tema de referencia de la propiedad.For more information on owner drawing, see the OwnerDraw property reference topic.

Para obtener más información sobre el manejo de eventos, consulte controlar y provocar eventos.For more information about handling events, see Handling and Raising Events.

Se aplica a

Consulte también: