VAPIMWP_FILE_CANUNZIP

Description

If a container file is open and there are subfiles selected in the file, this parameter determines whether the subfile or files can be extracted. This is a parameter of the VAPIM_FILE message.

Syntax

#include <kvvapi.h>
SendMessage(hWndVAPI, VAPIM_FILE, VAPIMWP_FILE_CANUNZIP,
           (LPARAM) (BOOL*) lpbCanUnZip );

Arguments

Argument

Description

hWndVAPI

The handle of the VAPI window.

lpbCanUnZip

A pointer to a flag that returns TRUE or FALSE depending on whether you can extract the subfiles.

Returns

SendMessage() returns TRUE if the call succeeds, in which case lpbCanUnZip 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 lpbCanUnZip is undefined.

Discussion

Use this message to control the state of an Extract menu item or toolbar button.


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