The ANNMOVE structure contains information about an annotation object when moving the object in automated mode.
Size of the ANNMOVE structure. Use sizeof(ANNMOVE).
Value that indicates the state of the move. Possible values are:
Current move location (in client coordinates)
An annotation object can be moved in automated mode by dragging the object with the mouse. Doing so causes a WM_LTANNEVENT message to be sent where wParam is ANNCHANGE_MOVE and lParam points to a structure of type ANNCHANGEPARAM. In this case, the union of ANNCHANGEPARAM is type ANNMOVE. This message is sent when one of the following events occurs:
Starting the move (with a mouse click): Two messages are sent, one before and one after the initial mouse click. The
nState field is set to STATE_BEGIN. The
pt field contains the location of the mouse click, in client coordinates.
Moving the object (by dragging the mouse): Pairs of messages (one before and one after) are sent for each mouse move. The
nState field is set to STATE_UPDATE, and the
pt field contains the location of the mouse.
Ending the move (by releasing the mouse): One pair of messages is sent (one before and one after) for the mouse up. The
nState field is set to STATE_END, and the
pt field contains the location of the mouse when released.
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