THotPDF Form Field Action Convenience Methods
Yöntem özeti: THotPDF Form Field Action Convenience Methods
Declarations
procedure ClearFormFieldAdditionalAction(const FieldName: AnsiString; Trigger: THPDFFormFieldActionTrigger);
procedure SetFormFieldKeyStrokeAction(const FieldName: AnsiString; Action: THPDFActionBuilder);
procedure ClearFormFieldKeyStrokeAction(const FieldName: AnsiString);
procedure SetFormFieldFormatAction(const FieldName: AnsiString; Action: THPDFActionBuilder);
procedure ClearFormFieldFormatAction(const FieldName: AnsiString);
procedure SetFormFieldValidateAction(const FieldName: AnsiString; Action: THPDFActionBuilder);
procedure ClearFormFieldValidateAction(const FieldName: AnsiString);
procedure SetFormFieldCalculateAction(const FieldName: AnsiString; Action: THPDFActionBuilder);
procedure ClearFormFieldCalculateAction(const FieldName: AnsiString);
procedure SetFormFieldAnnotationAction(const FieldName: AnsiString; Trigger: THPDFAnnotationActionTrigger; Action: THPDFActionBuilder);
procedure ClearFormFieldAnnotationAction(const FieldName: AnsiString; Trigger: THPDFAnnotationActionTrigger);
procedure SetFormFieldMouseEnterAction(const FieldName: AnsiString; Action: THPDFActionBuilder);
procedure ClearFormFieldMouseEnterAction(const FieldName: AnsiString);
procedure SetFormFieldMouseExitAction(const FieldName: AnsiString; Action: THPDFActionBuilder);
procedure ClearFormFieldMouseExitAction(const FieldName: AnsiString);
procedure SetFormFieldMouseDownAction(const FieldName: AnsiString; Action: THPDFActionBuilder);
procedure ClearFormFieldMouseDownAction(const FieldName: AnsiString);
procedure SetFormFieldMouseUpAction(const FieldName: AnsiString; Action: THPDFActionBuilder);
procedure ClearFormFieldMouseUpAction(const FieldName: AnsiString);
procedure SetFormFieldSetFocusAction(const FieldName: AnsiString; Action: THPDFActionBuilder);
procedure ClearFormFieldSetFocusAction(const FieldName: AnsiString);
procedure SetFormFieldLostFocusAction(const FieldName: AnsiString; Action: THPDFActionBuilder);
procedure ClearFormFieldLostFocusAction(const FieldName: AnsiString);Birim
HPDFDoc
Trigger map
| Method family | PDF trigger | Purpose |
|---|---|---|
SetFormFieldKeyStrokeAction / ClearFormFieldKeyStrokeAction | /AA /KKeystroke processing before a text value changes | |
SetFormFieldFormatAction / ClearFormFieldFormatAction | /AA /FFormatting after a field value changes | |
SetFormFieldValidateAction / ClearFormFieldValidateAction | /AA /VValidation before a value is committed | |
SetFormFieldCalculateAction / ClearFormFieldCalculateAction | /AA /CCalculation after dependent field changes | |
SetFormFieldMouseEnterAction / ClearFormFieldMouseEnterAction | /AA /EWidget pointer enters the annotation area | |
SetFormFieldMouseExitAction / ClearFormFieldMouseExitAction | /AA /XWidget pointer exits the annotation area | |
SetFormFieldMouseDownAction / ClearFormFieldMouseDownAction | /AA /DMouse button is pressed inside the widget | |
SetFormFieldMouseUpAction / ClearFormFieldMouseUpAction | /AA /UMouse button is released inside the widget | |
SetFormFieldSetFocusAction / ClearFormFieldSetFocusAction | /AA /FoWidget receives input focus | |
SetFormFieldLostFocusAction / ClearFormFieldLostFocusAction | /AA /BlWidget loses input focus |
Kullanım notları
- Call the set helpers after creating the target field and before EndDoc
- Each set helper replaces only the matching trigger entry and keeps the rest of the field or widget /AA dictionary intact
- Each clear helper removes only the matching trigger entry and deletes the empty /AA dictionary when no entries remain
- Use SetFormFieldAdditionalAction and ClearFormFieldAdditionalAction when code already works with THPDFFormFieldActionTrigger
- Use SetFormFieldAnnotationAction and ClearFormFieldAnnotationAction when code already works with THPDFAnnotationActionTrigger
- Builder validation still enforces PDF/A and PDF/X action restrictions before action dictionaries are written
Related API
- THotPDFSetFormFieldAdditionalActionMethod
- THPDFPageSetAnnotationAdditionalActionMethod
- THPDFPageClearAnnotationAdditionalActionMethod
- THPDFActionBuilderClass
- AcroFormSupport