ControlAutoShowing Event

Namespace: C1.Win.TouchToolKit

Assembly: C1.Win.TouchToolKit.8.dll

Syntax

public event EventHandler<ControlAutoShowingEventArgs> ControlAutoShowing

Returns

Examples

The following code example shows how to use this event.

This code example is part of a larger example provided for the ZoomFactorChanged event.

public class GcZoomEventDemo : Form
{
	private GcZoom _gcZoom1 = new GcZoom();

	public GcZoomEventDemo()
	{
		_gcZoom1.Target = this;
		_gcZoom1.AutoShowControl = true;
		_gcZoom1.ControlAutoShowing += _gcZoom1_ControlAutoShowing;
	}

	void _gcZoom1_ControlAutoShowing(object sender, ControlAutoShowingEventArgs e)
	{
		Console.WriteLine(e.ShowingControl.ToString());
		Console.WriteLine(e.ShowingReason.ToString());

		// Do not auto scroll if a control's most part is shown
		if (_gcZoom1.GetDisplayRectangle(e.ShowingControl).Width > e.ShowingControl.Size.Width / 2)
		{
			e.Cancel = true;
		}
	}

}

Public Class GcZoomEventDemo
	Inherits Form
	Private _gcZoom1 As New GcZoom()

	Public Sub New()
		_gcZoom1.Target = Me
		_gcZoom1.AutoShowControl = True
		AddHandler _gcZoom1.ControlAutoShowing, AddressOf _gcZoom1_ControlAutoShowing
	End Sub

	Private Sub _gcZoom1_ControlAutoShowing(sender As Object, e As ControlAutoShowingEventArgs)
		Console.WriteLine(e.ShowingControl.ToString())
		Console.WriteLine(e.ShowingReason.ToString())

		' Do not auto scroll if a control's most part is shown
		If _gcZoom1.GetDisplayRectangle(e.ShowingControl).Width > e.ShowingControl.Size.Width / 2 Then
			e.Cancel = True
		End If
	End Sub
End Class