ZoomSelectionTool Class

In This Topic

Visual tool for zooming image region in image viewer.

Object Model

Syntax

'Declaration

Public Class ZoomSelectionTool
   Inherits RectangularSelectionTool

public class ZoomSelectionTool : RectangularSelectionTool

public __gc class ZoomSelectionTool : public RectangularSelectionTool*

public ref class ZoomSelectionTool : public RectangularSelectionTool^

Remarks

Rectangular region of image in image viewer can be zoomed as follows:

place the mouse to the desired position
press the action button (ActionButton) and select the "zoom" region by holding the action button
release the action button
press the action button (ActionButton) inside the "zoom" region for zooming of image; press any mouse button outside of the "zoom" region for canceling zooming of image

If ActionButton is set to right mouse button, context menu during action can be disabled with the DisableContextMenu property.

Example

This C#/VB.NET code shows how to programmatically zoom an image in image viewer.

VB.NET


Class ZoomSelectionToolExample
    ' Programmatically zoom an image in image viewer.
    Public Sub ProgrammaticallyZoomImageInViewer(viewer As Vintasoft.Imaging.UI.ImageViewer)
        ' create an instance of ZoomSelectionTool class
        Dim zoomSelectionTool As New Vintasoft.Imaging.UI.VisualTools.ZoomSelectionTool()
        ' set the tool as the current tool of the ImageViewer
        viewer.VisualTool = zoomSelectionTool
        ' set the region of interest on image
        zoomSelectionTool.Rectangle = New System.Drawing.Rectangle(50, 50, 250, 150)
        ' zoom the selected region of image
        zoomSelectionTool.Zoom()
    End Sub
End Class


class ZoomSelectionToolExample
{
    // Programmatically zoom an image in image viewer.
    public void ProgrammaticallyZoomImageInViewer(
        Vintasoft.Imaging.UI.ImageViewer viewer)
    {
        // create an instance of ZoomSelectionTool class
        Vintasoft.Imaging.UI.VisualTools.ZoomSelectionTool zoomSelectionTool = 
            new Vintasoft.Imaging.UI.VisualTools.ZoomSelectionTool();
        // set the tool as the current tool of the ImageViewer
        viewer.VisualTool = zoomSelectionTool;
        // set the region of interest on image
        zoomSelectionTool.Rectangle = new System.Drawing.Rectangle(50, 50, 250, 150);
        // zoom the selected region of image
        zoomSelectionTool.Zoom();
    }
}

Inheritance Hierarchy

System.Object
   Vintasoft.Imaging.UI.VisualTools.VisualTool
      Vintasoft.Imaging.UI.VisualTools.UserInteraction.UserInteractionVisualTool
         Vintasoft.Imaging.UI.VisualTools.RectangularSelectionTool
            Vintasoft.Imaging.UI.VisualTools.ZoomSelectionTool

Requirements

Target Platforms: .NET 10; .NET 9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

Reference

ZoomSelectionTool Members
Vintasoft.Imaging.UI.VisualTools Namespace

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