VAPIMWP_VIEW_CANROTATE

Determines whether the document can be rotated. This is a parameter of the VAPIM_VIEW message.

Syntax

#include <kvvapi.h>
SendMessage(hWndVAPI, VAPIM_VIEW, VAPIMWP_VIEW_CANROTATE,
           (LPARAM) (BOOL*) lpbCanRotate );

Arguments

Argument Description
hWndVAPI The handle of the VAPI window.
lpbCanRotate A pointer to a flag that returns TRUE or FALSE, depending on whether the document can be rotated.

Returns

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

Discussion

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