;to：沈前卫
TApplication.HelpCommand
Provides quick access to any of the Help commands in the WinHelp API (application programming interface).
function HelpCommand(Command: Word; Data: Longint):
Boolean;
Description
Use HelpCommand to access WinHelp.
HelpCommand is a wrapper function that simply calls a method which calls the OnHelp event.
For information about these commands and the data passed to them, see the WinHelp topic in the Windows Help system.
