THelpEvent procedure type
Type used for an OnHelp event handler.
Declaration
THelpEvent = function(Command: Word; Data: PtrInt;
var CallHelp: Boolean): Boolean of objectArguments
Command | Help command type requested; either HELP_CONTEXT or HELP_COMMAND. |
Data | Context data for the help request. |
CallHelp | False suppresses help display. |
Function result
Indicates if the help request is satisfied by the event handler; False causes the default help handler for the application to be used.
Description
THelpEvent is an object function which specifies an event handler
signalled when Help is requested in an application or form.
THelpEvent is the type used to implement the
OnHelp
event handler in
TCustomForm and
TApplication.
Applications must implement a function using the signature for the event
handler, and assign it to the property.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.