File Content Extraction 25.1
Viewing SDK Programming Guide

# VAPIMWP_MULTIOBJ_CANPREVOBJ

Determines whether the previous object can be selected in a multiple-object document. See Change the Current Object in a Document. This is a parameter of the `VAPIM_MULTIOBJ` message.

## Syntax

    #include <kvvapi.h>
    SendMessage(hWndVAPI, VAPIM_MULTIOBJ, VAPIMWP_MULTIOBJ_CANPREVOBJ,
               (LPARAM) (BOOL*) &lpbCanPrevObj );

## Arguments

Argument | Description
--- | ---
`hWndVAPI` | The handle of the VAPI window.
`lpbCanPrevObj` | A pointer to a flag that returns `TRUE` or `FALSE`, depending on whether the document can select the previous object.

## Returns

`SendMessage()` returns `TRUE` if the current object can be changed to the previous object; otherwise it returns `FALSE`.

## Discussion

Use this message to control the state of a Previous Object menu item or toolbar button.

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Version 25.1 | Last updated January 2025

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Product: File Content Extraction 25.1

Topic Title: VAPIMWP_MULTIOBJ_CANPREVOBJ