C / C++ / MFC

9-May-06 21:50

I am converting a project fom VC++6 to compile under Visual Studio 2005. I have sorted out everything except this line:-

HtmlHelp(this->m_hWnd, strRef, HH_DISPLAY_TOPIC, NULL);

This gives me the error:-

error C2660: 'CWnd::HtmlHelpA' : function does not take 4 arguments

I have Googled it and seen a solution suggesting replacing HtmlHelp with ::HtmlHelp, but this did not work, I then got a Linker error:-

error LNK2019: unresolved external symbol _HtmlHelpA@16 referenced in function ....

Any ideas?

Many Thanks,

Ali

Nibu babu thomas9-May-06 22:02

9-May-06 22:02

Alison Pentland wrote:
HtmlHelp(this->m_hWnd, strRef, HH_DISPLAY_TOPIC, NULL);

this->m_hWnd can be left out.

HtmlHelp(strRef, HH_DISPLAY_TOPIC, NULL);

Nibu thomas
Software Developer

Faqs by Michael dunn

LittleYellowBird9-May-06 22:15

9-May-06 22:15

Thanks for the suggestion, I tried:-

HtmlHelp(strRef, HH_DISPLAY_TOPIC, NULL);

But now the error is:-

error C2660: 'CWnd::HtmlHelpA' : function does not take 3 arguments

In fact it seems that HtmlHelp now takes 2 parameters, but I can not figure out what they should be!

The irony of it is that when I press F1 for context sensitive help on HtmlHelp, it says "Information Not Found".

So I can not get context sensitive help on my problem with context sensitive help! Laugh | :laugh:

Thanks again, any other suggestions? Smile | :)

Ali

Hamid_RT9-May-06 22:22

Hamid_RT

9-May-06 22:22

Now CWnd::HtmlHelp(HH_DISPLAY_TOPIC, NULL);

-- modified at 4:23 Wednesday 10th May, 2006
exapmle from MSDN

HWND hwnd =
   HtmlHelp(
            GetDesktopWindow(),
            "c:\\Help.chm::/Intro.htm>Mainwin",
            HH_DISPLAY_TOPIC,
            NULL) ;

::HtmlHelp(hwndhandle,file,HH_DISPLAY_TOPIC,15);

LittleYellowBird9-May-06 22:42

9-May-06 22:42

Hi, and thanks for the help.

I am sorry but I don't follow what you mean.

I have changed my line of code to:-

HtmlHelp(HH_DISPLAY_TOPIC, NULL);

And now it compiles and runs, but when I click the 'Help' button it does not work, it says 'Failed to Launch help".

I suppose it doesn't know what the name of the help file is? I guess I've got to do something else, but what?

Thanks for your help, Smile | :)

Ali

Hamid_RT9-May-06 23:52

Hamid_RT

9-May-06 23:52

#include htmlhelp.h

you get error LNK2019 because you need to
import

htmlhelp.lib

i use this way and its work without error Failed

HWND hwnd = ::HtmlHelp(::GetDesktopWindow(),
	"c:\\2.chm",HH_DISPLAY_TOPIC,NULL) ;

LittleYellowBird10-May-06 1:10

Can I serialize COleDateTime object?

10-May-06 1:10

Thank You

I copied htmlhelp.lib into the project & then added it to the linker dependencies and it compiles & links now with errors.

Cheers, Big Grin | :-D

Ali

delegate client

Girish6019-May-06 21:45

Girish601

9-May-06 21:45

Hi,

We are trying to establish connection between Delegate client and server.
we able to set Delegate server. we are having problem to set Delegate client.
If we try to establish connection, following error occur

1) unknown parameter: -P8021 FCL
2) NIS not available
3) ## cannot load z

pls provide soln for above problem. so we are able to establish connection.

regards

Girish
Software Developer

NoName II9-May-06 21:31

9-May-06 21:31

the subject...

Nibu babu thomas9-May-06 21:58

9-May-06 21:58

Yeah you can.

Nibu thomas
Software Developer

Faqs by Michael dunn

NoName II9-May-06 22:14

9-May-06 22:14

write smth like it

class MyClass : public CObject{
public:
MyClass();
virtual ~MyClass();
virtual void Serialize(CArchive& ar);

COleDateTime m_tmDate;
};

ar<<m_tmdate.m_dt;
ar<<(int)m_tmdate.m_status;

ar>>m_tmDate.m_dt;
ar>>(int)m_tmDate.m_status;

as result: error C2679: binary '>>' : no operator found which takes a right-hand operand of type 'int' (or there is no acceptable conversion)

Nibu babu thomas9-May-06 22:16

9-May-06 22:16

NoName II wrote:
ar<<m_tmdate.m_dt;
ar<<(int)m_tmdate.m_status;

ar>>m_tmDate.m_dt;
ar>>(int)m_tmDate.m_status;

ar<<m_tmDate;

ar>>m_tmDate;

Tell the class to do the stuff. You are trying to help too much! Smile | :)

Nibu thomas
Software Developer

Faqs by Michael dunn

NoName II9-May-06 22:50

9-May-06 22:50

what's mean
"An attempt was made to access an unnamed file past its end

CFile file;
if(!file.Open(_T("persons.dat"),CFile::modeRead)){
AfxMessageBox(_T("Unable to open the file"));
exit(-1);
}
CArchive arr(&file,CArchive::load);
m_obDebtors.Serialize(arr);
arr.Close();
file.Close();

NoName II9-May-06 22:51

9-May-06 22:51

NoName II9-May-06 22:52

9-May-06 22:52

create a batch of button in code, and the BN_CLICKED messages map to one function onButtonClick()?

Cedric Moonen9-May-06 23:14

Cedric Moonen

9-May-06 23:14

NoName II wrote:
"An attempt was made to access an unnamed file past its end

I never heard about this error. It's perhaps because you try to load more objects than the file contains. So, you try to read after the end of the file. Can you confirm that your load and save parts serialize exactly the same objects in the same order ?

zeus_master9-May-06 21:10

Re: create a batch of button in code, and the BN_CLICKED messages map to one function onButtonClick()?

9-May-06 21:10

Hi,
would you please give a hand?
how to create a batch of button(more than 200) in the code?
use the array?
And then mapping the messages to one function onButtonClick()?

void onButtonClick(){
....// differentiate the buttons?
....//

}

..

-- modified at 3:12 Wednesday 10th May, 2006

Nibu babu thomas9-May-06 21:17

Re: create a batch of button in code, and the BN_CLICKED messages map to one function onButtonClick()?

9-May-06 21:17

Store these buttons inside a CTypedPtrMap or CTypedPtrList based on your requirements. Map requires key value pairs. For key you can use the Id of the button.

Override OnCommand to dynamically handle messages from these buttons instead of providing message map entries.

Nibu thomas
Software Developer

Faqs by Michael dunn

zeus_master9-May-06 22:39

Re: create a batch of button in code, and the BN_CLICKED messages map to one function onButtonClick()?

9-May-06 22:39

thank you for your kindness.

I'm afraid I don't know the way of "Store these buttons inside a CTypedPtrMap or CTypedPtrList based on your requirements. Map requires key value pairs. For key you can use the Id of the button."
would you show me the simple code?

and another base-question is dynamically creating button:
I wrote the (a) and (b) in function OnInitDialog()
(a)
CButton btn;
btn.Create("Hi,World",WS_CHILD|WS_VISIBLE|BS_PUSHBUTTON,CRect(10,20,80,40),this,104);
(b)
CButton *btn = new CButton;
btn->Create("Hi,World",WS_CHILD|WS_VISIBLE|BS_PUSHBUTTON,CRect(10,20,80,40),this,104);

it seems that the (a) can't work, but (b) is ok.
is there any different using pointer or not?

Cedric Moonen9-May-06 22:46

Cedric Moonen

9-May-06 22:46

zeus_master wrote:
it seems that the (a) can't work, but (b) is ok.
is there any different using pointer or not?

Yes, in your case: you are probably declaring the CButton inside the OnInitDialog function, so its scope is limited to the function. Once the function is finished, the CButton destructor will be called, thus removing the button from the dialog. You won't have the problem if it's a member variable of the class.

To store the buttons, you can also simply store them in a vector or list. Don't forget to change the ID of each button also (and be sure the range of ID's you are using is 'reserved' in the resource.h file, otherwise, some other controls could take the same id and you will be in troubles).

Re: create a batch of button in code, and the BN_CLICKED messages map to one function onButtonClick()?

zeus_master9-May-06 23:17

Re: create a batch of button in code, and the BN_CLICKED messages map to one function onButtonClick()?

9-May-06 23:17

thank you again for your timely teaching.

I wrote it like this, but it was faild:

CButton * btn[5];// = new 5 CButton
int i =1;
CString str;

for (i=0;i<5;i++) {
str.Format("%0x",i); // for set button caption
btn[i]->Create(str,WS_CHILD|WS_VISIBLE|BS_PUSHBUTTON,CRect(10,20+30*i,80,40+30*i),this,104+i);
}

Confused | :confused:

Cedric Moonen9-May-06 23:44

Cedric Moonen

9-May-06 23:44

Try to use vector or list from the STL instead. In your class, delcare a member variable (don't forget to include vector):

#include <vector>

CMyClass
{
private:
   std::vector<CButton> m_MyButtons;
};

Then in OnInitDialog (or where you create the buttons):

std::vector<CButton>:iterator iter = m_MyButtons.begin()
for(iter; iter!=m_MyButtons.end();iter++)
{
    (*iter).Create(str,WS_CHILD|WS_VISIBLE|BS_PUSHBUTTON,CRect(10,20+30*i,80,40+30*i),this,104+i);
}

I didn't test the code so there are perhaps some errors.

I strongly suggest you read some tutorials on the use of containers of the STL (list, vectors, ...). They are VERY usefull and much more safer than dynamic arrays. There is some tutorials on this website.

Re: create a batch of button in code, and the BN_CLICKED messages map to one function onButtonClick()?

zeus_master10-May-06 20:38