Invokes either the WinHelp application or context related help.
virtual void WinHelp(
   DWORD dwData,
   UINT nCmd = HELP_CONTEXT
);
Parameters
- dwData 
 Data that depends on the nCmd parameter. For a list of possible values see WinHelp.
- nCmd 
 The help command. For a list of possible values see WinHelp.
Requirements
Header: