ControlBoundsZooming Event

Namespace: C1.Win.TouchToolKit

Assembly: C1.Win.TouchToolKit.8.dll

Syntax

public event EventHandler<ControlBoundsZoomingEventArgs> ControlBoundsZooming

Returns

Remarks

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.ControlBoundsZooming += _gcZoom1_ControlBoundsZooming;
	}

	void _gcZoom1_ControlBoundsZooming(object sender, ControlBoundsZoomingEventArgs e)
	{
		ZoomBoundsInfo info = e.ZoomBoundsInfo;

		Console.WriteLine(e.TargetControl.ToString());
		Console.WriteLine(info.CurrentFactor.ToString());
		Console.WriteLine(info.TargetFactor.ToString());

		// For complex control, user may want to change the control's inner element's size.
		// User can use ControlBoundsZooming to support complex control.
		if (e.TargetControl is TextBox)
		{
			// If set to true, default zoom logic for this control will be canceled.
			e.Handled = true;
		}

		// If target control has children controls and wan't to use default zoom logic for children 
		// controls, set e.ChildrenHandled property to true.
		// e.ChildrenHandled = true; 
	}
}

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

	Public Sub New()
		_gcZoom1.Target = Me
		_gcZoom1.AutoShowControl = True
		AddHandler _gcZoom1.ControlBoundsZooming, AddressOf _gcZoom1_ControlBoundsZooming
	End Sub

	Private Sub _gcZoom1_ControlBoundsZooming(sender As Object, e As ControlBoundsZoomingEventArgs)
		Dim info As ZoomBoundsInfo = e.ZoomBoundsInfo

		Console.WriteLine(e.TargetControl.ToString())
		Console.WriteLine(info.CurrentFactor.ToString())
		Console.WriteLine(info.TargetFactor.ToString())

		' For complex control, user may want to change the control's inner element's size.
		' User can use ControlBoundsZooming to support complex control.
		If TypeOf e.TargetControl Is TextBox Then
			' If set to true, default zoom logic for this control will be canceled.
			e.Handled = True
		End If

		' If target control has children controls and wan't to use default zoom logic for children 
		' controls, set e.ChildrenHandled property to true.
		' e.ChildrenHandled = true; 
	End Sub
End Class