Determines whether the document supports an aspect ratio. This is a parameter of the VAPIM_VIEW
message.
#include <kvvapi.h> SendMessage(hWndVAPI, VAPIM_VIEW, VAPIMWP_VIEW_CANASPECTRATIO, (LPARAM) (BOOL*) lpbCanAspectRatio );
Argument | Description |
---|---|
hWndVAPI
|
The handle of the VAPI window. |
lpbCanAspectRatio
|
A pointer to a flag that returns TRUE or FALSE , depending on whether the document supports an aspect ratio. |
SendMessage()
returns TRUE
if the call succeeds, in which case lpbCanAspectRatio
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 lpbCanAspectRatio
is undefined.Use this message to control the state of an Aspect Ratio menu item or toolbar button.
|