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# VAPIMWP_VIEW_SETMAGNIFY

## Description

Sets the magnification of the document. This is a parameter of the `VAPIM_VIEW` message.

## Syntax

    #include <kvvapi.h>
    SendMessage(hWndVAPI, VAPIM_VIEW, VAPIMWP_VIEW_SETMAGNIFY,
               (LPARAM) (int) nMagnify );

## Arguments

Argument | Description
--- | ---
`hWndVAPI` | The handle of the VAPI window.
`nMagnify` | An integer that is the document magnification: `n` – Custom Percentage Value `-1` – Page width `-2` – Page size `-3` – Fit selection to window

## Returns

`SendMessage()` returns `TRUE` if the call succeeds; otherwise it returns `FALSE`.

## Discussion

Use this message to implement a Magnify menu item or toolbar button.

The range of acceptable values is 10 to 400 percent.

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