OnJavaScriptAlert event

Fires when an embedded JavaScript or XFA script invokes app.alert, allowing the host to display the message instead of the default message box

• Set Handled to True in the handler to suppress the default Application.MessageBox call
• The Result parameter receives the user-selected button code (JSPLATFORM_ALERT_RETURN_*) when Handled is True
• When unassigned, a default OK/Yes/No message box with the closest matching icon is shown automatically

TPdf.OnJavaScriptResponse, TPdf.OnXfaGotoUrl, TPdf.FormFill