KeyView 23.3

# VAPINM_EXTENT

Reports that the user changed the view extent.

## Syntax

    #include <kvvapi.h>
    VAPINM_EXTENT = uMsg;
    (wParam is not used)
    TPVAPIFirstLast lpFirstLast = (TPVAPIFirstLast*) lParam;

## Arguments

Argument | Description
--- | ---
`lpFirstLast` | A pointer to a TPVAPIFirstLast structure that defines the view extent.

## Returns

None

## Discussion

This message is received to report the first and last logical addresses that are currently displayed. This message is generated when the user scrolls the document or resizes the client area. This message is not generated until a `SB_ENDSCROLL` or `WM_KEYUP` message is received in the case of a scroll.

Copyright 2016-2023 Open Text
Version 23.3 | Last updated June 2023

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Product: IDOL KeyView 23.3

Topic Title: VAPINM_EXTENT