# VAPIMWP_EDIT_CANSELECTALL

## Description

Determines whether you can select all items in the document. If `lpbCanSelectAll` is `TRUE`, you can select all items in the document by using the VAPIMWP_EDIT_SELECTALL message. This is a parameter of the `VAPIM_EDIT` message.

## Syntax

    #include <kvvapi.h>
    SendMessage(hWndVAPI, VAPIM_EDIT, VAPIMWP_EDIT_CANSELECTALL,
               (LPARAM) (BOOL*) lpbCanSelectAll );

## Arguments

Argument | Description
--- | ---
`hWndVAPI` | The handle of the VAPI window.
`lpbCanSelectAll` | A pointer to a flag that returns `TRUE` or `FALSE`, depending on whether you can select all items in the document.

## Returns

`SendMessage()` returns `TRUE` if the call succeeds, in which case `lpbCanSelectAll` returns `TRUE` or `FALSE`.

`SendMessage()` returns `FALSE` if the call fails (for example, if there are invalid arguments or if no document is open), in which case `lpbCanSelectAll` is undefined.

## Discussion

Use this message to control the state of a Select All menu item or toolbar button.

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