C / C++ / MFC Discussion Boards

Re: CString Array

Jun Du13-Jun-06 5:38

Jun Du

13-Jun-06 5:38

Do you mean

arr[0]="37373";

and

arr[0]="37373,fred";

?

- It's easier to make than to correct a mistake.

Re: CString Array

si_6913-Jun-06 5:42

si_69

13-Jun-06 5:42

Jun Du wrote:
Do you mean

arr[0]="37373";
and

arr[0]="37373,fred";
?

no, only

arr[0]="37373,fred";

Re: CString Array

toxcct13-Jun-06 5:39

toxcct

13-Jun-06 5:39

use std::map<std::string, std::string>

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: CString Array

Rob Caldecott13-Jun-06 10:02

Rob Caldecott

13-Jun-06 10:02

Or std::vector<std::pair<std::string, std::string> > Smile | :)

Re: CString Array

Laxman Auti13-Jun-06 5:42

Laxman Auti

13-Jun-06 5:42

si_69 wrote:

what would be the best way to do this, and how would i go about it

You have to use some delimiter for adding extra data into each element of the array..like following.

arr[0]="43545" + "," + "mydata";
or use the Append method of the CString for each element.

Knock out 't' from can't,
You can if you think you can
Cool | :cool:

Linking files - inline, or Dev studio?

Mutty13-Jun-06 4:49

Mutty

13-Jun-06 4:49

Is it better to link .lib files using a line such as:

#pragma comment(lib,"XXXXXX.lib")

or, should they be linked via the project settings? What are the practical differences to these approaches?

Thanks, -mutty

Re: Linking files - inline, or Dev studio?

C^hris L^osinger13-Jun-06 5:01

C^hris L^osinger

13-Jun-06 5:01

they're easier to find, if you put them in the project settings.

Cleek | Image Toolkits | Thumbnail maker

Re: Linking files - inline, or Dev studio?

Viorel.13-Jun-06 5:03

Viorel.

13-Jun-06 5:03

I think there is no difference regarding the final executable, but I think putting of #pragma comment(lib,"XXXXXX.lib") in your files at least requires less configuration work when you re-use your code in other applications. You will not need to remember each time which external libraries must be used.

For instance, this practice can be seen in the header files supplied with MFC.

MFC Class Wizard has Stopped Working

Jethro6313-Jun-06 4:48

Jethro63

13-Jun-06 4:48

Hi:

Does anybody know about this problem?

I have been developing this application for several weeks now. I've created all sorts of dialog boxes and used Class Wizard to create a CDialog based class for each one.

Since late last week, Class Wizard has simply stopped working. I create a dialog resource, double click it to invoke Class Wizard, the window pops up, I fill it out and press "Finish". Nothing happens. It does NOT generate the class files. No error is reported, it just doesn't do anything.

I am at a dead stop here. Is anyone familiar with this problem? Somebody suggested last week that I delete the NCB file. This is Visual Studio 2003. I do not see an NCB file in my project directory. I have tried deleting the ASP file but this has had no effect.

Thanks in advance,
Mark

Re: MFC Class Wizard has Stopped Working

toxcct13-Jun-06 5:02

toxcct

13-Jun-06 5:02

Jethro63 wrote:
Somebody suggested last week that I delete the NCB file

not the .ncb but the .clw...

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: MFC Class Wizard has Stopped Working

Jethro6313-Jun-06 5:08

Jethro63

13-Jun-06 5:08

I don't see a CLW file either. Perhaps that is the problem...

Mark

Re: MFC Class Wizard has Stopped Working

bob1697213-Jun-06 5:37

bob16972

13-Jun-06 5:37

there is no .clw in VC++ 2003

how to convert string to unicode or LPWSTR

iLL eFFect13-Jun-06 4:20

iLL eFFect

13-Jun-06 4:20

I want to convert a string to LPWSTR to be used in RegOpenKeyEx.
i had been able to do it to the string directly i.e. L"xxx"
but unable to do it using string variable.
how can i do that please help.

Re: how to convert string to unicode or LPWSTR

Ganesh_T13-Jun-06 4:28

Ganesh_T

13-Jun-06 4:28

Have a look to this:
Here[^]

and

http://thomasnibu.tripod.com/tipsandtricks/
[^]

Cheers
"Peace of mind through Technology"

Re: how to convert string to unicode or LPWSTR

Viorel.13-Jun-06 4:42

Viorel.

13-Jun-06 4:42

If performance is not important, I think the easier alternative way is using of _bstr_t type. You can assign and you can get strings of both types:

_bstr_t s;
s = "abc";
s = L"abc";
char * a = s;
wchar_t * w = s;

So just try ::RegOpenKeyEx(..., _bstr_t(my_non_unicode_string), ...).

Note that you can explicitly stipulate the version of RegOpenKeyEx function when your strings do not correspond to the project configuration settings. Just use RegOpenKeyExA or RegOpenKeyExW according to your needs.

Re: how to convert string to unicode or LPWSTR

iLL eFFect13-Jun-06 4:46

iLL eFFect

13-Jun-06 4:46

So just try ::RegOpenKeyEx(..., _bstr_t(my_non_unicode_string), ...).

this does not work.. gives error at _bstr_t
please help

Re: how to convert string to unicode or LPWSTR

Viorel.13-Jun-06 4:52

Viorel.

13-Jun-06 4:52

The _bstr_t type is defined in comutil.h, so you have to add:

#include <comutil.h>

If this is not enough and you get linker errors, probably you will have to add comsuppw.lib library to project settings (Linker --> Input --> Additional Dependencies).

Re: how to convert string to unicode or LPWSTR

iLL eFFect13-Jun-06 5:00

iLL eFFect

13-Jun-06 5:00

i tried that and now it is giving me error: unable to convert from standard string to _bstr_t.

LONG retcode = RegOpenKeyEx(HKEY_CLASSES_ROOT,_bstr_t(ext.toStdString()), 0, KEY_ENUMERATE_SUB_KEYS, ®key);

tell me wat should I do. I am working on QT development env.(based on C++)

Re: how to convert string to unicode or LPWSTR

Viorel.13-Jun-06 5:07

Viorel.

13-Jun-06 5:07

I suppose ext.toStdString() returns a std::string. In this case, you should try ext.toStdString().c_str(). Otherwise investigate which kind of value returns toStdString().

Re: how to convert string to unicode or LPWSTR

Michael Dunn13-Jun-06 6:27

Michael Dunn

13-Jun-06 6:27

Check out this article on strings[^], specifically the section on converting between string encodings.

--Mike--
Visual C++ MVP Cool | :cool:

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VB > soccer

Misbehaving StrList.AddTail(pStr[i]); (vc++6) [modified]

Tara1413-Jun-06 4:18

Tara14

13-Jun-06 4:18

Hi,

I am having a problem with the collection class CStringList

In the part below, coded in vc++6, when the program is executen and StrList.AddTail(pStr[i]) is reached, the error 'this program has performed an illigal operation..." comes.
Although while compiling, no error is shown.

Please can you tell me what is going wrong?

 <br />
void Cop1::OnAdd() <br />
{<br />
	int	iCount = 0;<br />
	int i;<br />
	POSITION p;<br />
<br />
	// Get the number of selected items.<br />
    iCount = m_payeeList.GetSelCount();<br />
<br />
    if (iCount <= 0) return ;<br />
<br />
    // Get the list of selection IDs.<br />
    int* pItems = new int [iCount];<br />
    m_payeeList.GetSelItems(iCount, pItems);<br />
<br />
    // Create a string list.<br />
    CStringList StrList;<br />
<br />
	char *pStr[10];<br />
    // Add all the selected items to the list.<br />
   <br />
    for (i=0;i<iCount; i++)<br />
	{<br />
        <br />
		m_payeeList.GetText(pItems[i], pStr[i]);<br />
		// this is where the problem occures<br />
		StrList.AddTail(pStr[i]);<br />
			<br />
         }<br />
 }<br />

Thanks.
Tara

Fortitudine Vinsinues!

-- modified at 10:20 Tuesday 13th June, 2006

Re: Misbehaving StrList.AddTail(pStr[i]); (vc++6)

Viorel.13-Jun-06 4:26

Viorel.

13-Jun-06 4:26

I think instead of

m_payeeList.GetText(pItems[i], pStr[i]);
StrList.AddTail(pStr[i]);

you should try

CString text;
m_payeeList.GetText(pItems[i], text);
StrList.AddTail(text);

Now you do not need pStr, which actually was not initialized.

Hope it helps.

Re: Misbehaving StrList.AddTail(pStr[i]); (vc++6)

Tara1413-Jun-06 4:38

Tara14

13-Jun-06 4:38

Ah! That works. But I did initialised pStr:
char *pStr[10];

How do I get the string back form the StringList?
The code below is giving error. Is it correct?

POSITION p;<br />
	CString s;<br />
	s.Format("%s",StrList.GetNext(p));	<br />
	AfxMessageBox(s,MB_OK);

Tara

Fortitudine Vinsinues!

Re: Misbehaving StrList.AddTail(pStr[i]); (vc++6)

Viorel.13-Jun-06 4:46

Viorel.

13-Jun-06 4:46

I think you missed to initialize p. The following should work:

POSITION p = StrList.GetHeadPosition();
CString s = StrList.GetNext(p); 
AfxMessageBox(s,MB_OK);

Re: Misbehaving StrList.AddTail(pStr[i]); (vc++6)

Tara1413-Jun-06 4:51

Tara14

13-Jun-06 4:51

Yes! It works! Thanks a billion!

Tara

Fortitudine Vinsinues!

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