C / C++ / MFC

14-Aug-08 21:51

I want to learn visual C++ and I read some chapters of Visual C++ In 21 Days by I didn't enjoy it .
please give me a hand with this !!
tnx

David Crow15-Aug-08 3:08

15-Aug-08 3:08

razi_Seyyedi wrote:
...I read some chapters of Visual C++ In 21 Days by I didn't enjoy it .
please give me a hand with this !!

You need a hand reading? Confused | :confused:

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

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

razi_Seyyedi15-Aug-08 3:40

15-Aug-08 3:40

no, I mean give me some advices for learning Visual C++.

David Crow15-Aug-08 4:01

15-Aug-08 4:01

Start small, and work your way into larger problems. There are so many fundamental things you can do with a simple dialog. Reading books and Web sites are fine, but it sounds as though you just need to jump in and get your hands dirty using the IDE and compiler.

How about something easy like:

/---------------------------\
| My Temperature Program    |
+---------------------------+
|  Fahrenheit:  _____       |
|  Celsius:     _____       |
|                           |
|  /---------\  /--------\  |
|  | Compute |  | Cancel |  |
|  \---------/  \--------/  |
\---------------------------/

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

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

razi_Seyyedi15-Aug-08 4:27

15-Aug-08 4:27

I really enjoyed your answer . could you please give me some problems or some thing that you recommend for beginning . I know C++ but I'm not good at Visual C++.
tnx

David Crow15-Aug-08 4:48

15-Aug-08 4:48

razi_Seyyedi wrote:
could you please give me some problems...

Other than the one I already provided? Confused | :confused:

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

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

razi_Seyyedi15-Aug-08 5:22

15-Aug-08 5:22

yes man !! Rose | [Rose]

David Crow15-Aug-08 5:33

15-Aug-08 5:33

See here, and here.

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

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

Roger Stoltz15-Aug-08 4:06

Roger Stoltz

15-Aug-08 4:06

Is it just programming for windows using Visual C++ you want to learn, or do you need to learn C++ as well?

You know it's hard to recommend something since you've read one of the most basic books out there and you "didn't enjoy it" (whatever that means).

"It's supposed to be hard, otherwise anybody could do it!" - selfquote
"High speed never compensates for wrong direction!" - unknown

TCHAR to char problem

fantasy121514-Aug-08 17:44

14-Aug-08 17:44

I have an TCHAR array,

my buf:
TCHAR szBuf[MAX_PATH] = _T("buf");

a function;
void DealFunc(char *pStr);

I wanna use DealFunc, help me how to use it!
Hope I make the question clear!

Sadusaga14-Aug-08 18:12

Sadusaga

14-Aug-08 18:12

like this;

DealFunc( szBuf );

Love

fantasy121514-Aug-08 19:27

14-Aug-08 19:27

But if compiled with _UNICODE, it would not pass.

Is it the only way to do like this?

char szBuf1[MAX_PATH * 2];
#if defined(_UNICODE) || defined(UNICODE)
  WideCharToMultiByte(CP_ACP, 0, szBuf, -1, szBuf1, MAX_PATH * 2);
#else
  sprintf(szBuf1, szBuf);
#endif
DealFunc( szBuf1 );

Sadusaga14-Aug-08 19:33

Sadusaga

14-Aug-08 19:33

yes, I think this is the only way.

char szBuf1[MAX_PATH * 2];
#if defined(_UNICODE) || defined(UNICODE)
WideCharToMultiByte(CP_ACP, 0, szBuf, -1, szBuf1, MAX_PATH * 2);
#else
strcpy(szBuf1, szBuf);
#endif

DealFunc( szBuf1 );

Olympic Beijing 2008

fantasy121514-Aug-08 19:48

14-Aug-08 19:48

some else suggestion?

Jijo.Raj14-Aug-08 19:38

Jijo.Raj

14-Aug-08 19:38

First of all, I recommend you to read this article - http://www.codeproject.com/KB/string/cppstringguide1.aspx[^]

fantasy1215 wrote:

I wanna use DealFunc, help me how to use it!
Hope I make the question clear!

1) If UNICODE is not defined in your project, the TCHAR will expand to char and you can directly call DealFunc() since it expects char*.
2) Well, If your project have UNICODE defined, then your TCHAR will expand to wchar_t and in that case you cannot call DealFunc() because it signature is to accept char*.

Solutions
1) Change your function signature to TCHAR.

void DealFunc(char *pStr);

2) Change your buffer to char

char szBuf[MAX_PATH] = "buf";

3) If you don't want to change either of these, convert your unicode string to ansi and call your DealFunc(). Check this link - http://weseetips.com/2008/05/07/how-to-convert-unicode-to-ascii-and-vice-versa-more-easily/[^]

Did i explained too much details? Roll eyes | :rolleyes:

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

fantasy121514-Aug-08 20:12

14-Aug-08 20:12

Thanks for your all enthusiastic. I really appreciate.
people like you all make the world warm!

Jijo.Raj14-Aug-08 20:23

Jijo.Raj

14-Aug-08 20:23

Thanks a lot for your kind words. Smile | :)

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Nibu babu thomas14-Aug-08 20:15

Nibu babu thomas

14-Aug-08 20:15

#include <atlconv.h> // Necessary include for T2A and USES_CONVERSION

TCHAR szBuf[MAX_PATH] = _T("buf");

USES_CONVERSION; // Necessary macro to work with T2A
DealFunc( T2A( szBuf ));

T2A/W2A converts from unicode to ansi and T2W/A2W converts from ansi to unicode.

Nibu babu thomas
Microsoft MVP for VC++

Code must be written to be read, not by the compiler, but by another human being.

Programming Blog: http://nibuthomas.wordpress.com

modified on Friday, August 15, 2008 2:25 AM

Rajesh R Subramanian15-Aug-08 1:10

Rajesh R Subramanian

15-Aug-08 1:10

You would really recommend him to do something like that? I thought one must either stick to generic text mappings, or NOT. But that's my opinion. Smile | :)

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

Nibu babu thomas15-Aug-08 1:30

Nibu babu thomas

15-Aug-08 1:30

Rajesh R Subramanian wrote:
You would really recommend him to do something like that?

Reason being that it might be a external library API which he cannot modify and just in case if he can modify the prototype of this function then the parameter should be changed to TCHAR form. Smile | :)

Nibu babu thomas
Microsoft MVP for VC++

Code must be written to be read, not by the compiler, but by another human being.

Programming Blog: http://nibuthomas.wordpress.com

Rajesh R Subramanian15-Aug-08 1:50

Rajesh R Subramanian

15-Aug-08 1:50

Nibu babu thomas wrote:
just in case if he can modify the prototype of this function then the parameter should be changed to TCHAR form.

Exactly!

But I agree, it has happened to me more than once that I have to write sub standard code, only because then it would work with some existing component or framework, whose source is closed to me. I hate it. Dead | X|

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

KarstenK14-Aug-08 21:41

KarstenK

14-Aug-08 21:41

The right way is to make your DealFunc(TCHAR *pStr);

so you are independent to what TCHAR expands. Everything else is a bad barter.
Believe me: I am actually changing a lot of my code because I need it to be Unicode compatible. Dead | X|

Greetings from Germany

Rajesh R Subramanian15-Aug-08 1:03

Rajesh R Subramanian

15-Aug-08 1:03

If you are using Generic-Text Mappings, learn all the conventions and stick to the rules. Don't mix and match TCHAR with char.

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

fantasy121515-Aug-08 15:24