Web Demos

BARCODE READER SDK DEMO

Explore the flexibe barcode reading settings to optimize for your specific usage scenario.

WEB TWAIN SDK DEMO

Try the most popular web scanner features: scan images, import local images and PDF files, edit, save to local, upload to database, and etc.

BARCODE READER JAVASCRIPT DEMO

Transform any camera-equipped devices into real-time, browser-based barcode and QR code scanners.

MRZ SCANNER WEB DEMO

Detects the machine-readable zone of a passport, scans the text, and parses into human-readable data.

APP STORE DEMOS

BARCODE READER SDK FOR IOS

BARCODE READER SDK FOR ANDROID

VIEW MORE DEMOS >
Dev Center
Table of contents

How to zoom images using mouse wheel

Dynamic .NET TWAIN allows you to zoom images using hotkeys. Below is a simple sample in C# to use the Ctrl key + mouse wheel to zoom images in Dynamic .NET TWAIN.

private void btnScan_Click(object sender, EventArgs e)
        {
            //show current image only
            dsViewer1.SetViewMode(-1, -1);
            //enable zooming image using hot key
            dsViewer1.EnableInteractiveZoom = true;
        }

This page is compatible for:

Version 7.5

Is this page helpful?

YesYes NoNo

In this article:

latest version

    • Latest Version
    © 2003–2022 Dynamsoft. All rights reserved.
    Privacy Statement / Site Map / Home / Purchase / Support