ZoomPreviewMode Property

ZoomPreviewMode

Declaration

public ZoomPreviewMode ZoomPreviewMode { get; set; }

Property Value

Examples

The following code example shows how to use this property.

This code example is part of a larger example provided for the C1Zoom class. Run the sample code, select the different value of ZoomPreviewMode ComboBox. Try to zoom and pan by touch to check the difference of different ZoomPreviewMode.

public class GcZoomDemo : Form
{
	private ComboBox _previewModeComboBox;
	private GcZoom _gcZoom1 = new GcZoom();

	public GcZoomDemo()
	{
		InitializeComponent();

		_gcZoom1.Target = this;

		_previewModeComboBox.SelectedIndexChanged += previewModeComboBox_SelectedIndexChanged;
	}

	void previewModeComboBox_SelectedIndexChanged(object sender, EventArgs e)
	{
		switch (_previewModeComboBox.Text)
		{
			case "Bitmap":
				_gcZoom1.ZoomPreviewMode = ZoomPreviewMode.Bitmap;
				break;

		 	case "AlternativeContent":
			 	_gcZoom1.ZoomPreviewMode = ZoomPreviewMode.AlternativeContent;
			 	_gcZoom1.AlternativeContentSettings.ForeColor = SystemColors.ControlDarkDark;
			 	_gcZoom1.AlternativeContentSettings.Format = "Zooming {Percentage}%";
			 	break;

		 	case "NoPreview":
				_gcZoom1.ZoomPreviewMode = ZoomPreviewMode.NoPreview;
			 	break;

		 	default:
				break;
		}
	}

	private void InitializeComponent()
	{
		_previewModeComboBox = new ComboBox();
		_previewModeComboBox.Items.AddRange(new object[] { "Bitmap", "AlternativeContent", "NoPreview" });
		_previewModeComboBox.Location = new Point(160, 20);
		this.Controls.Add(_previewModeComboBox);
	}
}

Public Class GcZoomDemo
	Inherits Form
	Private _previewModeComboBox As ComboBox
	Private _gcZoom1 As New GcZoom()

	Public Sub New()
		InitializeComponent()

		_gcZoom1.Target = Me

		AddHandler _previewModeComboBox.SelectedIndexChanged, AddressOf previewModeComboBox_SelectedIndexChanged
	End Sub

	Private Sub previewModeComboBox_SelectedIndexChanged(sender As Object, e As EventArgs)
		Select Case _previewModeComboBox.Text
	 		Case "Bitmap"
		 		_gcZoom1.ZoomPreviewMode = ZoomPreviewMode.Bitmap
		 		Exit Select

	 		Case "AlternativeContent"
				_gcZoom1.ZoomPreviewMode = ZoomPreviewMode.AlternativeContent
				_gcZoom1.AlternativeContentSettings.ForeColor = SystemColors.ControlDarkDark
		 		_gcZoom1.AlternativeContentSettings.Format = "Zooming {Percentage}%"
		 		Exit Select

	 		Case "NoPreview"
				_gcZoom1.ZoomPreviewMode = ZoomPreviewMode.NoPreview
		 		Exit Select

	 		Case Else
				Exit Select
 		End Select
	End Sub

	Private Sub InitializeComponent()
 		_previewModeComboBox = New ComboBox()
 		_previewModeComboBox.Items.AddRange(New Object() {"Bitmap", "AlternativeContent", "NoPreview"})
 		_previewModeComboBox.Location = New Point(160, 20)
 		Me.Controls.Add(_previewModeComboBox)
	End Sub
End Class