VAPIMWP_VIEW_CANGRIDLINES

Determines whether the document supports gridlines. This is a parameter of the VAPIM_VIEW message.

Syntax

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

Arguments

Argument Description
hWndVAPI The handle of the VAPI window.
lpbCanGridlines A pointer to a flag that returns TRUE or FALSE, depending on whether the document supports gridlines.

Returns

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

Discussion

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