C1ZoomAttached Event

Occurs when the C1Zoom component has attached to a Form.

Namespace: C1.Win.TouchToolKit

Assembly: C1.Win.TouchToolKit.4.8.dll

Syntax

public event EventHandler<C1ZoomAttachedEventArgs> C1ZoomAttached

Public Event C1ZoomAttached As EventHandler(Of C1ZoomAttachedEventArgs)

Returns

Type	Description
EventHandler<C1ZoomAttachedEventArgs>	Occurs when the component has attached to a .

Remarks

You can change the initial settings of C1Zoom component in this event's event handler.

Examples

The following code example shows how to use this event.

This code example is part of a larger example provided for the C1ApplicationZoom class.

public class GcApplicationZoomDemo : Form
{
	private Button _showFormButton;
	private GcApplicationZoom _gcApplicationZoom;

	public GcApplicationZoomDemo()
	{
		InitializeComponent();

		_showFormButton.Click += _showFormButton_Click;
		_gcApplicationZoom.GcZoomAttached += _gcApplicationZoom_GcZoomAttached;
	}

	void _gcApplicationZoom_GcZoomAttached(object sender, GcZoomAttachedEventArgs e)
	{
		// If you want specific GcZoom's setting different from GcApplicationZoom, You can change it in
		// GcZoomAttaching or GcZoomAttached event.
		e.GcZoom.MaxZoomFactor = 4f;

		if (e.Form is ZoomForm)
		{
			e.GcZoom.ZoomFactorChanged += (e.Form as ZoomForm).ZoomFactorChangeProc;
		}
	}

	void _showFormButton_Click(object sender, EventArgs e)
	{
		Form form = new ZoomForm();
		form.Show();
	}

	private void InitializeComponent()
	{
		_gcApplicationZoom = new GcApplicationZoom();
		_showFormButton = new Button();
		_showFormButton.Text = "Click to open ZoomForm";
		_showFormButton.Location = new Point(20, 20);
		_showFormButton.Size = new Size(200, 40);
		this.Controls.Add(_showFormButton);
	}
}

internal class ZoomForm : Form
{
	private Button _showFormButton;

	public ZoomForm()
	{
		InitializeComponent();

		_showFormButton.Click += _showFormButton_Click;
	}

	public void ZoomFactorChangeProc(object sender, EventArgs e)
	{
		Console.WriteLine(GcApplicationZoom.GetGcZoom(this).ZoomFactor.ToString());
	}

	private void _showFormButton_Click(object sender, EventArgs e)
	{
		Form form = new ZoomForm();
		form.Show();
	}

	private void InitializeComponent()
	{
		_showFormButton = new Button();
		_showFormButton.Text = "Click to open a new form";
		_showFormButton.Location = new Point(20, 20);
		_showFormButton.Size = new Size(200, 40);
		this.Controls.Add(_showFormButton);
		this.Text = "ZoomForm";
	}
}

Public Class GcApplicationZoomDemo
	Inherits Form
	Private _showFormButton As Button
	Private _gcApplicationZoom As GcApplicationZoom

	Public Sub New()
		InitializeComponent()

		AddHandler _showFormButton.Click, AddressOf _showFormButton_Click
		AddHandler _gcApplicationZoom.GcZoomAttached, AddressOf _gcApplicationZoom_GcZoomAttached
	End Sub

	Private Sub _gcApplicationZoom_GcZoomAttached(sender As Object, e As GcZoomAttachedEventArgs)
		' If you want specific GcZoom's setting different from GcApplicationZoom, You can change it in
		' GcZoomAttaching or GcZoomAttached event.
		e.GcZoom.MaxZoomFactor = 4.0F

		If TypeOf e.Form Is ZoomForm Then
			AddHandler e.GcZoom.ZoomFactorChanged, AddressOf TryCast(e.Form, ZoomForm).ZoomFactorChangeProc
		End If
	End Sub

	Private Sub _showFormButton_Click(sender As Object, e As EventArgs)
		Dim form As Form = New ZoomForm()
		form.Show()
	End Sub

	Private Sub InitializeComponent()
		_gcApplicationZoom = New GcApplicationZoom()
		_showFormButton = New Button()
		_showFormButton.Text = "Click to open ZoomForm"
		_showFormButton.Location = New Point(20, 20)
		_showFormButton.Size = New Size(200, 40)
		Me.Controls.Add(_showFormButton)
	End Sub
End Class

Friend Class ZoomForm
	Inherits Form
	Private _showFormButton As Button

	Public Sub New()
		InitializeComponent()

		AddHandler _showFormButton.Click, AddressOf _showFormButton_Click
	End Sub

	Public Sub ZoomFactorChangeProc(sender As Object, e As EventArgs)
		Console.WriteLine(GcApplicationZoom.GetGcZoom(Me).ZoomFactor.ToString())
	End Sub

	Private Sub _showFormButton_Click(sender As Object, e As EventArgs)
		Dim form As Form = New ZoomForm()
		form.Show()
	End Sub

	Private Sub InitializeComponent()
		_showFormButton = New Button()
		_showFormButton.Text = "Click to open a new form"
		_showFormButton.Location = New Point(20, 20)
		_showFormButton.Size = New Size(200, 40)
		Me.Controls.Add(_showFormButton)
		Me.Text = "ZoomForm"
	End Sub
End Class