How to get to protected member m_nIDHelp

There is a protected member variable m_nIDHelp.  I am
not sure if it is a member of the CWnd class or the
CDialog class.  It shows up as a "protected" member
of my CDialog object in the debugger.

Anyway, the question is, is there an access function
available so that I can get to this from outside the
class?  Or am I going to have to subclass from CDialog
and provide my own access function?

By the way, what do I do when an expert answers a
question that is not sufficient?  My question is tagged
as answered and waiting for a grade so no one looks
at it.  The expert said to get back to him if it was
not sufficient, but the only way I have to do this is
by posting a comment and I have had no response for
quite a while.  The first response was virtually
immediate, but now it sits.
solomon021499Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

MarkusLoiblCommented:
In afxwin.h you find the definition of CDialog, included the member:
protected:
        UINT m_nIDHelp;
There you also find:
public:
      void SetHelpID(UINT nIDR);
You can call this member from outside the class.

By the way, if you do not agree with someone's answer, do the following: When you evaluate the proposed answer, use the radio button with the lowest agreement (I don't know the correct text, but when it says "excellent-good-ok-bad", use bad). The question then does not loose the status of a question; it will be put back to the unanswered questions.

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
solomon021499Author Commented:
Thank you for resonding.  I did see the definition of CDialog in afxwin.h and the void SetHelpID(UNIT nIDR) function.  However, I need to be able to retrieve the value, not set it.

I assume this means that I will have to provide this myself.

Also, thank you for your advice about question status.
0
MarkusLoiblCommented:
you also find in the MFC-sources:

ON_MESSAGE(WM_HELPHITTEST, OnHelpHitTest)
LRESULT CDialog::OnHelpHitTest(WPARAM, LPARAM)
{
 if (m_nIDHelp != 0)
  return HID_BASE_RESOURCE + m_nIDHelp;
 return 0;
}

I think you can use this member to retrieve your actual m_nIDHelp with:
  UINT helpId = myDialog->SendMessage(WM_HELPHITTEST);
  if( helpId ) helpId -= HID_BASE_RESOURCE;
This should work!
0
Cloud Class® Course: Microsoft Office 2010

This course will introduce you to the interfaces and features of Microsoft Office 2010 Word, Excel, PowerPoint, Outlook, and Access. You will learn about the features that are shared between all products in the Office suite, as well as the new features that are product specific.

solomon021499Author Commented:
I tried it and have not yet been able to get it to work.
It is necessary to include afxpriv.h, but I get many compilation errors in it when I do so.  I assume that it requires yet another header, but I have not yet found it.  Thank you.  I will let you know when I get it.
0
solomon021499Author Commented:
As I indicated in my last comment, I have not been able to get
UINT helpId = myDialog->SendMessage(WM_HELPHITTEST);
if( helpId ) helpId -= HID_BASE_RESOURCE;
to work when including afxpriv.h.  I do not know how to elimination the multitude of compilation errors that occur when including that file.  I tried defining WM_HELPHITTEST and HID_BASE_RESOURCE myself to the value in afxpriv.h
#define WM_HELPHITTEST      0x0366
#define HID_BASE_RESOURCE   0x00020000UL  
which did work.  However, this is a embarassing work around.  Do you have any ideas, what the problem is.  Do I need to include yet another file?


0
MarkusLoiblCommented:
I use VC++ 5.0 and do not have any problems with it.
I just built up a little example, and I can send you the files with e-mail, if you tell me your email-adress
(send it to:  MarkusLoibl@ThinkTools.com )

0
MarkusLoiblCommented:
I use VC++ 5.0 and do not have any problems with it.
I just built up a little example, and I can send you the files with e-mail, if you tell me your email-adress
(send it to:  MarkusLoibl@ThinkTools.com )

0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
System Programming

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.