VAPIMWP_VIEW_CANINVERT
Determines whether the document colors can be inverted. This is a parameter of the VAPIM_VIEW
message.
Syntax
#include <kvvapi.h> SendMessage(hWndVAPI, VAPIM_VIEW, VAPIMWP_VIEW_CANINVERT, (LPARAM) (BOOL*) lpbCanInvert );
Arguments
Argument | Description |
---|---|
hWndVAPI
|
The handle of the VAPI window. |
lpbCanInvert
|
A pointer to a flag that returns TRUE or FALSE , depending on whether the document colors can be inverted (for example, from black to white and white to black). |
Returns
SendMessage()
returnsTRUE
if the call succeeds, in which caselpbCanInvert
returnsTRUE
orFALSE
.SendMessage()
returnsFALSE
if the call fails (for example, if there are invalid arguments or if no document is open), in which caselpbCanInvert
is undefined.
Discussion
Use this message to control the state of an Invert menu item or toolbar button.