The ANNHITTESTINFO structure provides hit test information for the L_AnnHitTest function.
Size of this structure. Use sizeof(HITTESTINFO).
This is the zero-based index of the handle. This field is valid only if puResult of L_AnnHitTest is updated with either ANNHIT_HANDLE or ANNHIT_USER_HANDLE. The default handles and the user handles are maintained internally as separate arrays of handles. This means that there is both a default handle "0" and a user handle "0". This index can be used with other annotation handle functions.
Reserved for future use. Set this field to zero.
For an example showing the use of this structure, refer to L_AnnHitTest.
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