FocusPreviousFormField - TPdfView

Componente: TPdfView · Unidade: PDFium

Funciona com o cursor lógico de foco do AcroForm da página atual para fluxos de trabalho de teclado, fala e acessibilidade

Syntax

function FocusPreviousFormField: Integer;

Return Value

Integer. O índice do novo campo focado, ou -1 quando nenhum campo pode ser focado

Description

The form-focus members maintain a logical cursor over AcroForm widget annotations on the current page. The cursor follows FormFieldTabOrder and returns -1 when no current-page field is focused

Use these members when an application needs to walk fields from code, drive voice-assisted form filling, or expose the active field to an accessibility layer without relying on mouse hit testing

Remarks

API names, type names, and PDF terms keep their original spelling so code search remains reliable
Call the member only after the owning document or viewer is active unless the syntax describes an event or design-time property

Example

if Pdf1.FormFieldCount > 0 then
Pdf1.FocusFormField(0);
ShowMessage(Pdf1.FocusedFormFieldText);

FocusPreviousFormField method