KeyView 24.1

# VAPIMWP_VIEW_GETINVERT

Gets the invert state of the document. This is a parameter of the `VAPIM_VIEW` message.

## Syntax

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

## Arguments

Argument | Description
--- | ---
`hWndVAPI` | The handle of the VAPI window.
`lpbInverted` | A pointer to a flag that returns `TRUE` or `FALSE`, depending on whether the document colors are inverted (for example, from black to white and white to black).

## Returns

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

## Discussion

Use this message to set the state of an Invert menu item or toolbar button.

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Version 24.1 | Last updated December 2023

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Product: IDOL KeyView 24.1

Topic Title: VAPIMWP_VIEW_GETINVERT