Zoomin

Zoomin magnifies a rectangle on the screen.

It's modeled after the old sample ZoomIn tool from an old Microsoft SDK.

Features

• Supports multiple monitors with different DPIs.
• Can show gridlines with up to two different intervals (minor and major).
• Can auto-refresh the magnified rectangle on a configurable timer.
• Can copy the magnified rectangle to clipboard.
• Can use arrow keys to move the magnified rectangle.
• Can use Shift + arrow keys to move the magnified rectangle faster.
• Can use Ctrl + arrow keys to jump the magnified rectangle to the corresponding edge of the current monitor.

Why was it created?

I've used the old ZoomIn tool for decades. But none of the spinoff versions were updated to support Dynamic DPI across multiple monitors, and that made them unable to zoom in on some regions of some monitors. I needed to zoomin in anywhere.

So I wrote my own version from scratch, and implemented full DDPI support so it works seamlessly across multiple monitors with different DPI scaling factors. It's released under the MIT license.

Building Zoomin

Zoomin uses Premake to generate Visual Studio solutions. Note that Premake >= 5.0.0-beta1 is required.

1. Cd to your clone of zoomin.
2. Run premake5.exe toolchain (where toolchain is one of Premake's actions - see premake5.exe --help).
3. Build scripts will be generated in .build\toolchain. For example .build\vs2019\zoomin.sln.
4. Call your toolchain of choice (Visual Studio, msbuild.exe, etc).