🚀 go-pugleaf

In article <NEWTNews.16531.822443361.Postmaster@Jerusalem.netvision.net.il>
           iti@Jerusalem.netvision.net.il  writes:

> 
> 
> When I try to read the text from a Edit Control (IDC_EDIT1) with the
> following code:
> 
> --------------------------------------------------------------
> CString callBuf;
> int msgLen = GetDlgItemText(IDC_EDIT1, callBuf, sizeof(callBuf));
> --------------------------------------------------------------
> 
> I get the following error:
> 
> --------------------------------------------------------------
> error C2664: 'GetDlgItemText' : cannot convert parameter 2 from 'class 
> 
> ::CString ' to 'char __far *'
> --------------------------------------------------------------
> 
> 
> I am using Visual C++, how can I read the text directly into the CString?
> I know that I am doing something REAL STUPID so if you can be of any help-
> 
> Please send any advice you have for me to my EMail address:
>         iti@netvision.net.il
> 
> Thanks
> Yaakov
> 
> 

Unless I am much mistaken, this should do what you want
 
  CString strTest;
  ((CEdit *)GetDlgItem(IDC_EDIT1))->GetWindowText(strTest);

I am not emailing this because the point of newsgroups is
to share information and benefit the developer community,
not to answer 1 developer's question.

Good luck!

-- 
Richard Clarke

Your Right!!!

iti@Jerusalem.netvision.net.il wrote:
>
>When I try to read the text from a Edit Control (IDC_EDIT1) with the
>following code:
>
>--------------------------------------------------------------
>CString callBuf;
>int msgLen = GetDlgItemText(IDC_EDIT1, callBuf, sizeof(callBuf));
>--------------------------------------------------------------
>
>I get the following error:
>
>--------------------------------------------------------------
>error C2664: 'GetDlgItemText' : cannot convert parameter 2 from 'class >::CString ' to 'char __far *'
>--------------------------------------------------------------

try:
 #define MAXLEN 256 
 CString callBuf;
 LPTSTR p;
 int msgLen;

 p=callBuf.GetBuffer(MAXLEN);
 msgLen = GetDlgItemText(IDC_EDIT1, p, MAXLEN);
 callBuf.ReleaseBuffer();

Andreas Adler

Once upon a time (OK, it was Tue, 23 Jan 96 16:26:35 PDT),
iti@Jerusalem.netvision.net.il wrote:
>When I try to read the text from a Edit Control (IDC_EDIT1) with the
>following code:
>
>--------------------------------------------------------------
>CString callBuf;
>int msgLen = GetDlgItemText(IDC_EDIT1, callBuf, sizeof(callBuf));
>--------------------------------------------------------------
>
>I get the following error:
>
>--------------------------------------------------------------
>error C2664: 'GetDlgItemText' : cannot convert parameter 2 from 'class 

>::CString ' to 'char __far *'
>--------------------------------------------------------------
>
>
>I am using Visual C++, how can I read the text directly into the CString?
>I know that I am doing something REAL STUPID so if you can be of any help-
>
>Please send any advice you have for me to my EMail address:
cc:	iti@netvision.net.il

You can use a CString directly only if the function calls for a
constant char * (LPCSTR).  Otherwise, you can call
CString::GetBuffer(), which will return a pointer that you can modify;
but you must later call ReleaseBuffer() if you do indeed change it.
This is clearly explained in the documentation for CString.

_______________________________________________________
Marty Fried - mfried@linex.com     Press Enter to Exit
San Anselmo, CA                           -NT message
(MSVC4 + MFC) && (Win95 || NT);             

In article <NEWTNews.16531.822443361.Postmaster@Jerusalem.netvision.net.il>, 
iti@Jerusalem.netvision.net.il says...
>
>When I try to read the text from a Edit Control (IDC_EDIT1) with the
>following code:
>
>--------------------------------------------------------------
>CString callBuf;
>int msgLen = GetDlgItemText(IDC_EDIT1, callBuf, sizeof(callBuf));
>--------------------------------------------------------------
>
>I get the following error:
>
>--------------------------------------------------------------
>error C2664: 'GetDlgItemText' : cannot convert parameter 2 from 'class 
>::CString ' to 'char __far *'
>--------------------------------------------------------------
>
>
>I am using Visual C++, how can I read the text directly into the CString?
>I know that I am doing something REAL STUPID so if you can be of any help-

If you are using CWnd::GetDlgItemText(), then the code is quite simple:

int msgLen=GetDlgItemText( IDC_EDIT1, callBuf );

The compiler error is generated because Visual C++ is trying to match on
one of the two over-rides:

int GetDlgItemText( int nID, LPTSTR lpStr, int nMaxCount ) const;
int GetDlgItemText( int nID, CString& rString ) const;

(Taken directly from Visual C++ 4.0 help.) You are confusing the compiler
by providing a CString reference *AND* the integer.

'Course, all bets are off if you are _NOT_ using CWnd::GetDlgItemText().
If that's the case, you've got to either allocate a separate char* buffer,
or create a buffer inside the CString object with the GetBuffer() method,
which has the following prototype:

LPTSTR GetBuffer( int nMinBufLength );

Hope this helps.

-- 
____________________________________________________________
Huw Leonard
"To secure ourselves against defeat lies in our own hands, but the
opportunity of defeating the enemy is provided by the enemy himself.
Hence the saying: One may _know_ how to conquer without being able
to _do_ it." - Sun Tzu, The Art Of War

Adler <Andreas.Adler@zxa.x400.basf-ag.de> writes:

>iti@Jerusalem.netvision.net.il wrote:
>>
>>When I try to read the text from a Edit Control (IDC_EDIT1) with the
>>following code:
>>
>>--------------------------------------------------------------
>>CString callBuf;
>>int msgLen = GetDlgItemText(IDC_EDIT1, callBuf, sizeof(callBuf));
>>--------------------------------------------------------------
>>
>>I get the following error:
>>
>>--------------------------------------------------------------
>>error C2664: 'GetDlgItemText' : cannot convert parameter 2 from 'class >::CString ' to 'char __far *'
>>--------------------------------------------------------------

>try:
> #define MAXLEN 256 
> CString callBuf;
> LPTSTR p;
> int msgLen;

> p=callBuf.GetBuffer(MAXLEN);
> msgLen = GetDlgItemText(IDC_EDIT1, p, MAXLEN);
> callBuf.ReleaseBuffer();

Totally correct. Of course, you could just use the somewhat simpler

msgLen = GetDlgItemText(IDC_EDIT1, callBuf);





>Andreas Adler


-- 
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   Roenne Alle 3 st.th, 2860 Soeborg, Denmark, tel. +45 39 66 39 86