KeyView 24.4
KeyView Viewing SDK Programming Guide

# VAPINM_USERCLICK

Reports that the user clicked the mouse on the document.

## Syntax

    #include <kvvapi.h>
    VAPINM_USERCLICK = uMsg;
    BOOL bDoubleClick = (BOOL) wParam;
    long lLogicalAddress = (long) lParam;

## Arguments

Argument | Description
--- | ---
`bDoubleClick` | A flag that is `TRUE` if the user double-clicked; `FALSE` if the user single-clicked.
`lLogicalAddress` | A long integer that is the logical address of the mouse click.

## Returns

None

## Discussion

You can use the positional information to insert an annotation. This message is generated by a `WM_LBUTTONDOWN` or `WM_LBUTTONDBLCLK`.

NOTE: This message is not sent when the user has the Shift key depressed, because this indicates the selection is to be extended. In fact, this causes a `VAPINM_SELECTION` message to be sent.

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Version 24.4 | Last updated September 2024

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Product: IDOL KeyView 24.4

Topic Title: VAPINM_USERCLICK