---
name: "MagnifyTool"
section: "3"
platform: "linux"
package: "ivtools-dev"
version: "1.1.3-4"
release: "Debian 3.1 (Sarge)"
platforms: ["linux"]
url: "https://new.carta.tech/MagnifyTool"
---

# MagnifyTool(3)

tool for magnifying a portion of the GraphicView displayed in a viewer

## NAME

MagnifyTool - tool for magnifying a portion of the GraphicView displayed in a viewer

## SYNOPSIS

**#include \<Unidraw/Tools/magnify.h\>**

## DESCRIPTION

MagnifyTool lets the user magnify a portion a viewer's contents.  The user sweeps out a rectangular area with the MagnifyTool, and the viewer will magnify the area to occupy the entire screen, if possible.

## PUBLIC OPERATIONS

- **MagnifyTool(ControlInfo\* = nil)**

  Instantiate a MagnifyTool.

- **virtual Manipulator\* CreateManipulator(**

  - **Viewer\*, Event&, Transformer\***

  - **)**

  - **virtual void InterpretManipulator(Manipulator\*)**

  CreateManipulator generates a DragManip with a RubberRect to provide visual feedback for specifying the rectangular area to be magnified. InterpretManipulator does not create a command; rather, it examines the DragManipulator's RubberRect and calls Magnify on the viewer with the RubberRect's final coordinates.

## SEE ALSO

Rubband(3I), Tool(3U), Viewer(3U), manips(3U)