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Re: MFC Storage Classes

Scorpio14-May-06 23:47

14-May-06 23:47

OK thank you Alok.
If you have (VC Forum Q&A :- II/ III) link pl send it to me.

NiLeSh KoRpE

Re: MFC Storage Classes

ThatsAlok15-May-06 0:31

15-May-06 0:31

NiLeSh KoRpE wrote:
If you have (VC Forum Q&A :- II/ III) link pl send it to me.

The VC Forum Q&A II and III isn't published Yet, they are in pipeline!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

VinayCool14-May-06 20:27

14-May-06 20:27

Hai,

I am trying to add contents to list box but i am getting run time error (VC++ Debug Library)

Can anyone help me with this.

I used F10 and checked run time error was generated at this line
status.m_OUT.AddString(e->filename);

void Index :: readFiles (sortentry* e)
{
---
----
----
if ((s = (char*)strrchr(e->filename, '/')) == NULL)
{

CStatusDlg status;
status.m_OUT.AddString(e->filename);
}
}

Regards,
Vinay Charan CN.

Re: Adding Items

kakan14-May-06 20:48

14-May-06 20:48

Is the listbox created when you add items to it?
The usual place to intiate controls is in OnInitDialog.

Re: Adding Items

Hamid_RT14-May-06 20:53

14-May-06 20:53

you use
CStatusDlg status;
status.m_OUT.AddString(e->filename);
I guess m_OUT.m_hWnd is NULL

whitesky

Re: Adding Items

VinayCool14-May-06 20:55

14-May-06 20:55

Hai,

So what shd be done ??? Can u help me with this.

Re: Adding Items

Hamid_RT14-May-06 21:00

14-May-06 21:00

I tested like this

<br />
	CAnswer m_Answer;<br />
	m_Answer.m_List1.AddString("A");//runtime error<br />
hWnd=0x0000 and 	m_Answer.m_List1 is=0x0000<br />

--------------------
of course CTest2 is CDialog
you can use of course i suggest you created your dialog in one function like OnInitDialog
and you can use from it

<br />
	CAnswer m_Answer;<br />
	m_Answer.Create(IDD_TEST2);<br />
	m_Answer.m_List1.AddString("A");<br />

m_dlg and handle from List is valid

whitesky

Re: Adding Items

VinayCool14-May-06 21:11

14-May-06 21:11

Hai,

I made the changes as below as u said but still i am getting error.

void Index :: readFiles (sortentry* e)
{
FILE *fp;
char *s;
static int fnum = 0;
int wds = 0;

if (e != NULL) {
readFiles (e->left);
fp = fopen (e->filename, "r");
fnum++;

CStatusDlg status;
status.Create(IDD_INDEX_STATUS_DIALOG);

if ((s = (char*)strrchr(e->filename, '/')) == NULL)
{
status.m_OUT.AddString(e->filename);
}
else
{
status.m_OUT.AddString(e->filename);
}
---
=----
}

Re: Adding Items

Hamid_RT14-May-06 21:44

14-May-06 21:44

what is it sortentry* e?

whitesky

Re: Adding Items

VinayCool14-May-06 22:24

14-May-06 22:24

Hai,

it just Receives file names from other functions.

Re: Adding Items

Russell^'14-May-06 22:29

14-May-06 22:29

What error?
What line?

Re: Adding Items

VinayCool14-May-06 22:31

14-May-06 22:31

(VC++ Debug Library)

status.m_OUT.AddString(e->filename);

Re: Adding Items

Russell^'14-May-06 23:11

14-May-06 23:11

Check this:
status.GetSafeHwnd() ==NULL?
m_OUT is ==NULL?
m_OUT->GetSafeHwnd() ==NULL?
e->filename is CString? Empty?

Re: Adding Items

VinayCool15-May-06 0:24

15-May-06 0:24

hi,

how to check the values for status.GetSafeHwnd() ??

//m_OUT is ==NULL?

m_OUT will be empty when the dialog loads.

//e->filename is CString? Empty?
e value will alwys have a value its of CString type "C:\Dir\filename1"

Re: Adding Items

Russell^'15-May-06 0:39

15-May-06 0:39

You have to write code like this (according to your variable definitions)
and find out what is the object with the real problem.

CStatusDlg status;<br />
status.Create(IDD_INDEX_STATUS_DIALOG);<br />
<br />
ASSERT(status.GetSafeHwnd() != NULL);<br />
ASSERT(status.m_OUT.GetSafeHwnd() != NULL);<br />
ASSERT(e != NULL);<br />
ASSERT(e->filename != "");<br />
...<br />
<br />
status.m_OUT.AddString(e->filename);

You must add every test that could be a problem during execution, and, remember, use DEBUG mode, not RELEASE.

If there is a bug the program will stops at the line that point the problem.

Re: Adding Items

VinayCool15-May-06 1:04

15-May-06 1:04

Hi,

i have used f10 and check the exact line where the error generates

status.Create(IDD_INDEX_STATUS_DIALOG);

305: status.Create(IDD_INDEX_STATUS_DIALOG);
0040A83B push 0
0040A83D push 84h
0040A842 lea ecx,[status]
0040A848 call CDialog::Create (00409e36)

what will be cause ??
------------------------------

void Index :: readFiles (sortentry* e)
{
FILE *fp;
char *s;
static int fnum = 0;
int wds = 0;

if (e != NULL) {
readFiles (e->left);
fp = fopen (e->filename, "r");
fnum++;

CStatusDlg status;
status.Create(IDD_INDEX_STATUS_DIALOG);

if ((s = (char*)strrchr(e->filename, '/')) == NULL)
{
ASSERT(status.GetSafeHwnd() != NULL);
ASSERT(status.m_OUT.GetSafeHwnd() != NULL);
ASSERT(e != NULL);
ASSERT(e->filename != "");

status.m_OUT.AddString(e->filename);
}
else
{
ASSERT(status.GetSafeHwnd() != NULL);
ASSERT(status.m_OUT.GetSafeHwnd() != NULL);
ASSERT(e != NULL);
ASSERT(e->filename != "");
status.m_OUT.AddString(e->filename);
}

// cout <<" " << s+1;
insert (fnum, e->filename);
if (fp) {
wds = getWord (fp,fnum);
}
else {
cerr << "File: " << e->filename << " can't open" << endl;
return;
}
cout << " (" << wds << " words)" << endl;
fclose (fp);
free (e->filename);
readFiles(e->right);
delete e;
}
}

Re: Adding Items

Russell^'15-May-06 1:13

15-May-06 1:13

CStatusDlg is child of CDialog?
Check if IDD_INDEX_STATUS_DIALOG is the right id of a Dialog resource.

else follow the functions's call using F11, and, surely, you will find the point that give the error.

Re: Adding Items

Russell^'15-May-06 1:16

15-May-06 1:16

Possible error:

CStatusDlg status;<br />
status.Create(IDD_INDEX_STATUS_DIALOG);

->Use this:

CStatusDlg status(IDD_INDEX_STATUS_DIALOG);

Re: Adding Items

VinayCool15-May-06 1:24

15-May-06 1:24

Hi,

i did that i am getting compile time error

CStatusDlg status(IDD_INDEX_STATUS_DIALOG);

'CStatusDlg::CStatusDlg' : cannot convert parameter 1 from 'const int' to 'class CWnd *'
Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast

Re: Adding Items

Russell^'15-May-06 1:30

15-May-06 1:30

Then, follow the create function using F10 and F11.
Be sure that the ID (and resource object) IDD_INDEX_STATUS_DIALOG is correct.

Re: Adding Items

VinayCool15-May-06 1:51

15-May-06 1:51

Hai,

I have checked the Dialog ID its correct.

I am not able to trace with f11, how to do that ?? its keep on entering the loop its not breaking.

Re: Adding Items

Russell^'15-May-06 2:04

15-May-06 2:04

Simply press F11 in place of F10 when you want to show the code of a called function (in your case Create)

Re: Adding Items

Russell^'14-May-06 23:06

14-May-06 23:06

fp = fopen (e->filename, "r");<br />
...<br />
if ((s = (char*)strrchr(e->filename, '/')) == NULL)

mmm....

D'Oh! | :doh:

Confused | :confused:

Confused | :confused:

fp = fopen (e->filename, "r");<br />
...<br />
if ((s = (char*)strrchr(e->filename, '\\')) == NULL)

Is this a good correction?

Re: Adding Items

VinayCool14-May-06 23:26

14-May-06 23:26

Hi,

I have checked with out adding items it works corectly whn i add the additems to list box i am getting error.

Re: Adding Items

Eytukan15-May-06 0:03

15-May-06 0:03

can you please show the value of e->fileName ?

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