Compiler Directives
The HtmlHelp interface unit supports a number of options (through compiler directives) to control the HTML Help version and to choose between dynamic and static linking. The interface unit (HtmlHlp.pas) includes a file called HtmlHlp.inc (located in the Pas folder) which currently defines only HTMLHELP12. To change any of the options, explained below, modify this file and rebuild your application. For example, to switch the interface unit to dynamic linking remove the dot (.) in the {.$DEFINE HTMLHELP_DYNAMIC_LINK} statement. Use the links below for an explanation of the diffent directives.
DELPHI3
HTMLHELP11
HTMLHELP12
HTMLHELP_DYNAMIC_LINK
HTMLHELP_DYNAMIC_LINK_EXPLICIT
_WIN64