[]
Gets or sets a value indicating whether allow double tap to zoom. ZoomFactor will change to 2f or MaxZoomFactor if it is less than 2f before double tap; otherwise, it will change to 1f.
public bool AllowDoubleTapZoom { get; set; }
Type | Description |
---|---|
bool | true if allow double tap to zoom; otherwise, false. The default is false. |
The following code example shows how to use this property.
This code example is part of a larger example provided for the AllowPinchZoom property.
public class GcZoomMiscDemo : Form
{
private CheckBox _allowDoubleTapZoomCheckBox;
private GcZoom _gcZoom1 = new GcZoom();
public GcZoomMiscDemo()
{
InitializeComponent();
_gcZoom1.Target = this;
_allowDoubleTapZoomCheckBox.CheckedChanged += _allowDoubleTapZoomCheckBox_CheckedChanged;
}
void _allowDoubleTapZoomCheckBox_CheckedChanged(object sender, EventArgs e)
{
_gcZoom1.AllowDoubleTapZoom = _allowDoubleTapZoomCheckBox.Checked;
}
private void InitializeComponent()
{
_allowDoubleTapZoomCheckBox = new CheckBox();
_allowDoubleTapZoomCheckBox.Text = "AllowDoubleTapZoom";
_allowDoubleTapZoomCheckBox.Location = new Point(20, 80);
_allowDoubleTapZoomCheckBox.Size = new Size(200, 20);
this.Controls.Add(_allowDoubleTapZoomCheckBox);
}
}
Public Class GcZoomMiscDemo
Inherits Form
Private _allowDoubleTapZoomCheckBox As CheckBox
Private _gcZoom1 As New GcZoom()
Public Sub New()
InitializeComponent()
_gcZoom1.Target = Me
AddHandler _allowDoubleTapZoomCheckBox.CheckedChanged, AddressOf _allowDoubleTapZoomCheckBox_CheckedChanged
End Sub
Private Sub _allowDoubleTapZoomCheckBox_CheckedChanged(sender As Object, e As EventArgs)
_gcZoom1.AllowDoubleTapZoom = _allowDoubleTapZoomCheckBox.Checked
End Sub
Private Sub InitializeComponent()
_allowDoubleTapZoomCheckBox = New CheckBox()
_allowDoubleTapZoomCheckBox.Text = "AllowDoubleTapZoom"
_allowDoubleTapZoomCheckBox.Location = New Point(20, 80)
_allowDoubleTapZoomCheckBox.Size = New Size(200, 20)
Me.Controls.Add(_allowDoubleTapZoomCheckBox)
End Sub
End Class