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.
#include <kvvapi.h> SendMessage(hWndVAPI, VAPIM_FILE, VAPIMWP_FILE_CANUNZIP, (LPARAM) (BOOL*) lpbCanUnZip );
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. |
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.
Use this message to control the state of an Extract menu item or toolbar button.
|