list box problem - C / C++ / MFC Discussion Boards

Regards

Nisha

You have the source code - use it! Smile | :)

I guarantee the info you find there will be more (or at least as) accurate than any response here.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

When I use TryEnterCriticalSection() I am getting an error as TryEnterCriticalSection' : undeclared identifier. I have included #define _WIN32_WINNT 0x0500 and windows.h in my header file. How can solve this problem?
Thanks in advance.

Possibly you need an updated Platform SDK.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

I tried this on Windows XP and Vista as well.

My point wasn't about the OS it was about the installed SDK. As the name implies, the SDK is a development tool, it doesn't come together with the OS, you need to download it from the Microsoft website.

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Thanks. I am able to compile it without any error now. I have incuded the definition _WIN32_WINNT=0x0502 in project settings instead of in the header file.

i need my list box to show the strings i add to it at runtime onebyone but the strings get listed finally after all operations are completed(all together)
what should be done for it??should any method be called after addstring method is called

You may call UpdateWindow on your listbox.

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

sanjayvenkat wrote:
what should be done for it??

You should employ a worker thread so that the primary thread can keep the UI updated.

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

how many times a word is used in a sentence,or its frequency
eg:
“this is a dog and that is a pig”
result:
“is”:2
“and”:1
th:2
is:3
i:4
thank you!

How much money are you ready to invest in?
Big Grin | :-D

i.e. 'Please provide code' is not the best way to go on. Read posting guidelines.

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

flowingsun wrote:
how many times a word is used in a sentence,or its frequency
eg:
“this is a dog and that is a pig”

Your question

flowingsun wrote:
result:
“is”:2
“and”:1
th:2
is:3
i:4

You already know the answer. Very Smart!!!

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

flowingsun wrote:
thank you!

You're welcome!

In Evc++4, I want to convert CString to int/float. I use the following code :

// CONVERT STRING TO INT
CString csValue;
GetDlgItem(IDC_OpNo_EDIT)->GetWindowText( csValue );
m_opNo = atoi((char*)(LPCTSTR)csValue);

The above code works, but only with the first digit, so If I enter 34, I only get 3 in m_opNo int. same happens with float atof.

Can anyone tell what changes ae required to get full digit from CString to int. Is I enter 34 I want 34 as int.

Thanks

Terry

int i = _ttoi(csValue);

double f = _tstof(csValue);

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Thanks CPallini & everybody else.
This solved my problem for int's but not for float as _ttof or _tstof id not defined in tchar also. I am using eVc++4.0 with WinCE 5. I can't find the functions in eVC help or tchar.h file also & it throws compilation error :

error C2065: '_tstof' : undeclared identifier

Any other alternative to do the above task would be great.

Thanks

Terry

Well you can rool your own version:

#ifdef _UNICODE
#define _tstof wtof
#else
#define _tstof atof
#endif

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Thanks CPallini for your quick response.

I entered your code on top of my file (after #includes) & used _tstof(csValue), but it gives me the same error for wtof. I also can't find wtof or _wtof in Help of Evc++4. wtoi is available but not wtof. TChar.h is included.

error C2065: 'wtof' : undeclared identifier

Any further help, please.

Thanks

Terry

If ypur system really doesn't provide wtof, you may consider to convert your wide character string into standard (i.e. ANSI) one, via WideCharToMultiByte), and then use atof.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Hello,

Thanks. I tried the following way :

   CString csValue;
   GetDlgItem(IDC_PRICE_EDIT)->GetWindowText(csValue);
.....
       char* dest;
       WideCharToMultiByte(CP_ACP, 0, csValue, -1, dest, 10, NULL, NULL);
       float flt = (float)atof(dest);
       CString d(_T("Converted Float:"));
       d.Format(_T("%s %.2f"), d, flt);
       AfxMessageBox(d);

Using WideCharToMultiByte method, I put all values accordingly & converted to float using atof. I get the converted value. BUT as soon as the Converted .. msg box is displayed I also get "Assertion Failed!" :File thrdcore.cpp, Line 867 Abort/Ret/Ig. Retry or ignore doesn't respond so I have to select Abort. It points to
if (m_nDisablePumpCount != 0)
{
TRACE0("Error: CWinThread::PumpMessage called when not permitted.\n");
--------> ASSERT(FALSE);
}
of PumpMessage().

Where am aI going wrong can you point out? Do I need to change anything in Wide...(). AS dest is not initialized, I get warning message for that also.

I have also noted that in eVC++4 I get exceptions at Assert many times, any special reason?

Thanks

Terry

Trupti Mehta wrote:
Where am aI going wrong

You didn't allocate memory for the dest buffer.
The buffer should large enough to get the converted string. Hence you may write

int iLen = csValue.GetLenght(); 
char * dest = new char[iLen+1];
WideCharToMultiByte(CP_ACP, 0, csValue, -1, dest, iLen, NULL, NULL);
// Perform conversion to float
delete [] dest;

or, using a reasonably large array:

char dest[MAX_PATH+1];
WideCharToMultiByte(CP_ACP, 0, csValue, -1, dest, MAX_PATH, NULL, NULL);

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Thanks CPallini, its working perfectly as expected. Got rid from all type casts.

Thanks a lot to all of you trying to solve my problem.

Thanks

Terry

i think your running into trouble with the double cast

((char*)(LPCTSTR)csValue

i think LPCTSTR boils down to wchar_t

so the double cast (char*)(wchar_t*) would be doing horrid things

the wise Pallini has stated the appropreaite funcs

killabyte wrote:
the wise Pallini

like Alfonso of my sign.
Laugh | :laugh:

Thank you.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]