Re: stcpy
The squares probably indicate a problem with Unicode characters being
written out as chars. Is your project compiled as Unicode. If so you may
want to use TCHAR to declare your buffer and tcscpy() to do the copy,
although you don't really need to do a string copy to do what you want.
You may want to save yourself a lot of trouble and just use a CString to
hold your string. Since you are using CFile you already have MFC so using
CString is a lot more convenient and it already compiles ANSI or Unicode
depending on the compile defines.
Tom
"Dolf Mardan" wrote in message news:201022514127dolfakar@hotmail.com...
Dear All,
I need to use file read/write in VC++ MFC, I used the following code to
write to a txt file, but I got squares instead of text "Sample Text for
CFile Write function Example":
here is the code I used:
------
CFile cfile_object;
cfile_object.Open( "c:\\test\\ucancode_cfile_example.dat",
CFile::modeCreate|CFile::modeWrite);
char szSampleText[256];
strcpy(szSampleText, "Sample Text for CFile Write function Example");
cfile_object.Write (szSampleText, sizeof (szSampleText));
--------------
please advice.
Dolf
Guido Franzke wrote:
Re: strcpy problem
05-Feb-07
You must cast the std:string to const char*, the following way:
std::string source = "Hello world";
char sz[1000];
strcpy(sz, source.c_str());
Same with *Iter.
Regards, Guido
Previous Posts In This Thread:
On Monday, February 05, 2007 5:51 AM
lencastro wrote:
strcpy problem
typedef std::list<std::basic_string<TCHAR> > str_list;
.
.
.
str_list::iterator Iter
.
.
.
strcpy(temp,*Iter);
________________________________________________
When i tried to use the above code...
i got the following error...
error C2664: 'strcpy' : cannot convert parameter 2 from 'class
std::list<class std::basic_string<char,struct
std::char_traits<char>,class std::allocator<char> >,class
std::allocator<class std::basic_string<char,struct
std::char_traits<char>,class std::allocator<char> > > >::iterator' to
'const char *'
No user-defined-conversion operator available that can perform
this conversion, or the operator cannot be called
Plz explain the code also the error...in detail
Thank you
On Monday, February 05, 2007 6:38 AM
Guido Franzke wrote:
Re: strcpy problem
You must cast the std:string to const char*, the following way:
std::string source = "Hello world";
char sz[1000];
strcpy(sz, source.c_str());
Same with *Iter.
Regards, Guido
On Monday, February 05, 2007 9:48 AM
Ajay Kalra wrote:
Re: strcpy problem
Since you are using MFC, why not use CString/CStringArray?
---
Ajay
On Monday, February 05, 2007 12:28 PM
Joseph M. Newcomer wrote:
Re: strcpy problem
Several things:
First, why are you using strcpy when you have str_list defined in terms of
TCHAR?
Second, why do you think *Iter is the address of the string? It is the
address of a
std::basic_string<TCHAR>, but that is not the text of the string required
by strcpy.
Try
_tcscpy(temp, (*iter).c_str());
or something very similar to that (I don't use std:: so I'm not sure about
the (*iter),
but the c_str() *is* required as far as I know).
And, more seriously, why are you using strcpy and a character array
anyway? These should
be totally unnecessary when using CString or std::string.
The first thing to learn about C++ programming, whether you use CString or
std::string, is
that the notion of character arrays is largely dead, and is needed only in
rare and exotic
circumstances. And the char type is definitely obsolete except in rare
and exotic
circumstances. You have not explained your code well enough to justify
that you have a
rare and/or exotic circumstance.
joe
On 5 Feb 2007 02:51:41 -0800, "lencastro" <lencastro@gmail.com> wrote:
Joseph M. Newcomer [MVP]
email: newcomer@flounder.com
Web: http://www.flounder.com
MVP Tips: http://www.flounder.com/mvp_tips.htm
On Tuesday, February 06, 2007 3:51 AM
lencastro wrote:
Re: strcpy problem
Thanks Mr.Joseph
I have solved the problem.
your post helped me in many ways.
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