function NextFormFieldIndexForPage(FormHandle: FPDF_FORMHANDLE; Page: FPDF_PAGE; CurrentIndex: Integer; GoForward: Boolean): Integer;
| FormHandle | FPDF_FORMHANDLE |
| Page | FPDF_PAGE |
| CurrentIndex | Integer |
| GoForward | Boolean |
IntegerNextFormFieldIndexForPage walks the widget annotation order for one page and returns the next candidate index relative to CurrentIndex
Set GoForward to True for forward Tab navigation or False for reverse navigation
NextIndex := NextFormFieldIndexForPage(Pdf1.FormHandle, Pdf1.Page, Pdf1.FocusedFormFieldIndex, True);