function FindFormFieldAt(Pt: TDPoint): Integer; overload; function FindFormFieldAt(Pt: TPoint): Integer; overload;
Description
Returns the index of any form field found on the page at the specified position (in terms of PDF points).
Result will be -1 if no form fields are found.
PDF Page Points
Objects on a PDF page are specified in points that originate at the bottom-left, i.e. when X,Y = (0,0). The top-left of the page is specified by (PageWidth, PageHeight).
To convert PDF points to screen values, use PageToScr.