This function is used to identify or change the help table.

#define INCL_WINHELP /* Or use INCL_WIN, INCL_PM, */
#include <os2.h>

HWND          hwndHelpInstance;  /*  Handle of an instance of the Help Manager. */
PHELPTABLE    phtHelpTable;      /*  Help table allocated by the application. */
BOOL          rc;                /*  Success indicator. */

rc = WinCreateHelpTable(hwndHelpInstance,
       phtHelpTable);