WM QUERYTRACKINFO

The frame control generates this message on receiving a WM_TRACKFRAME (in Frame Controls) message.

Syntax

param1
    USHORT     ustflags;   /* Tracking flags. */

param2
    PTRACKINFO ptrackinfo; /* Track information structure. */

Parameters

ustflags (USHORT) - input

Tracking flags. Contains a combination of one or more TF_* flags as defined in the TRACKINFO structure.

ptrackinfo (PTRACKINFO) - input/output

This points to a TRACKINFO structure. The receiver of this message must modify this structure.

Returns

rc (BOOL) - returns

Continue indicator.

TRUE: Continue sizing or moving

FALSE: Terminate sizing or moving

Remarks

This message is sent to the window procedure of the owner of a frame control or title bar control respectively.

The TRACKINFO data structure specified by the ptrackinfo parameter is not initialized before the message is sent. It must be correctly completed before returning.

Default Processing

The default window procedure takes no action on this message, other than to set rc to FALSE.

Related Messages

• WM_TRACKFRAME (in Title Bar Controls)