The following example uses the WinHelp function to start the Windows Help application and open the Windows NT Help file to its Contents topic.
HWND hwnd; // main window handle
BOOL bResult // for checking boolean function result
bResult = WinHelp(hWnd, "WINNT.HLP", HELP_CONTENTS, 0L);
This next example opens the Windows NT user Help file, searches the file for the topic associated with a keyword string, and then displays the topic.
HWND hwnd; // main window handle
BOOL bResult // for checking boolean function result
bResult = WinHelp(hWnd, "WINNT.HLP", HELP_KEY,
(DWORD) "finding topics");