Re: TCHAR* and LPTSTR - C / C++ / MFC Discussion Boards

Owner drawn19-Jan-06 1:30

19-Jan-06 1:30

kelprinc wrote:

TCHAR * shi502_netname = _T("test");
LPTSTR h = shi502_netname ;
TCHAR* var = h;

cout<<var<<endl;
< blockquote="">

Here this is printing fine.

What is this p->shi502_netname. Is this a pointer to a char or a single char.

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Re: TCHAR* and LPTSTR

kelprinc19-Jan-06 1:38

kelprinc

19-Jan-06 1:38

We are on totally different wave lengths.

Forget about the first part. Assume you have a struct p that has shi502_netname as its member. shi502_netname is of type LPTSTR.

now i want to print the LPTSTR string in the p struct.

I tried doing this p->shi502_netname, but all i get is the first letter of the string

Kelvin Chikomo

Re: TCHAR* and LPTSTR

Owner drawn19-Jan-06 1:43

Owner drawn

19-Jan-06 1:43

I also declared a struct and put a member inside with the same name and it's still working.

struct 
{
	LPTSTR  shi502_netname;
}p;

p.shi502_netname = _T("test");
LPTSTR h = p.shi502_netname ;	
TCHAR* var = h;
cout<<var<<endl;

Here is the code. It's working. Sniff | :^)

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Re: TCHAR* and LPTSTR

kelprinc19-Jan-06 1:46

kelprinc

19-Jan-06 1:46

I have edited the struct, its not a normal struct (typedef)

typedef struct
{
LPTSTR shi502_netname;
}p;

p.shi502_netname = _T("test");
LPTSTR h = p.shi502_netname ;
TCHAR* var = h;cout<

Re: TCHAR* and LPTSTR

Owner drawn19-Jan-06 1:50

Owner drawn

19-Jan-06 1:50

typedef struct 
{
	LPTSTR  shi502_netname;
}p;

Did you declare a variable of type p.

p p1; //don't forget this
p1.shi502_netname = _T("test");
LPTSTR h = p1.shi502_netname ;
TCHAR* var = h;
cout<<var<<endl;

It still works fine.

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Re: TCHAR* and LPTSTR

kelprinc19-Jan-06 1:55

kelprinc

19-Jan-06 1:55

Yes i do. you did not declare yours as *p look at my definition of my struct below

typedef struct
{
LPTSTR shi502_netname;
}*p;

p p1; //don't forget thisp1.shi502_netname = _T("test");LPTSTR h = p1.shi502_netname ;TCHAR* var = h;cout<

Re: TCHAR* and LPTSTR

Owner drawn19-Jan-06 2:01

Owner drawn

19-Jan-06 2:01

Aha here is the problem...

typedef struct 
{
	LPTSTR  shi502_netname;
} ap,*p;

ap a;
p p1 = &a;
p1->shi502_netname = _T("test");
LPTSTR h = p1->shi502_netname ;
TCHAR* var = h;
cout<<var<<endl;

It works with the modifications that I made. You have to make another typedef along with *p i.e ap. If you don't what are you going to assign to a variable of type p. p needs an address of a struct of it's own type.

An advice: Please provide some meaningful names for variables and specially typedefs.

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--Never say quits
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Re: TCHAR* and LPTSTR

kelprinc19-Jan-06 2:11

kelprinc

19-Jan-06 2:11

I tried it it did not work

the struct that iam using is part of the C++ libraries

here it is
typedef struct _SHARE_INFO_502 {
LPTSTR shi502_netname;
DWORD shi502_type;
LPTSTR shi502_remark;
DWORD shi502_permissions;
DWORD shi502_max_uses;
DWORD shi502_current_uses;
LPTSTR shi502_path;
LPTSTR shi502_passwd;
DWORD shi502_reserved;
PSECURITY_DESCRIPTOR shi502_security_descriptor;
} SHARE_INFO_502, *PSHARE_INFO_502, *LPSHARE_INFO_502;

And i have to use *PSHARE_INFO_502 as the name of the struct

Kelvin Chikomo

Re: TCHAR* and LPTSTR

Owner drawn19-Jan-06 2:18

Owner drawn

19-Jan-06 2:18

Go ahead it will work.

PSHARE_INFO_502 should take the address of a valid structure of the same type. Then it has to work.

Probably like this:

SHARE_INFO_502 shInfo;
PSHARE_INFO_502 pShInfo = &shInfo;

Now use pShInfo as you should.

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Re: TCHAR* and LPTSTR

kelprinc19-Jan-06 2:27

kelprinc

19-Jan-06 2:27

I get wrong out puts if i try this.

let me just give you part of my code

 PSHARE_INFO_502 BufPtr,p;<br />
   //SHARE_INFO_502 shInfo;<br />
   //PSHARE_INFO_502 pShInfo = &shInfo;<br />
   NET_API_STATUS res;<br />
   LPTSTR   lpszServer = NULL;<br />
   DWORD er=0,tr=0,resume=0, i;<br />
<br />
   //declare server variable<br />
   lpszServer = lpszArgv[1];<br />
   cout<<lpszServer<<endl;<br />
<br />
   /*----------------------------------------------------<br />
      Call the NetShareEnum function; specify level 502.<br />
     ----------------------------------------------------*/<br />
<br />
   do // begin do<br />
   {<br />
      res = NetShareEnum (lpszServer, 502, (LPBYTE *) &BufPtr, -1, &er, &tr, &resume);<br />
     <br />
      // If the call succeeds,<br />
     <br />
      if(res == ERROR_SUCCESS || res == ERROR_MORE_DATA)<br />
      {<br />
         p=BufPtr;<br />
         <br />
         // Loop through the entries;<br />
         //  print retrieved data.<br />
        <br />
         for(i=1;i<=er;i++)<br />
         {<br />
			   TCHAR* strPath =p->shi502_netname;<br />
<br />
			   cout<<strPath<<endl;<br />
			   // Declare new CACLInfo object<br />
			   // and initialize it with supplied path<br />
			   CACLInfo objAclInfo(strPath);<br />
   <br />
			   // query ACL info from NTFS<br />
			   objAclInfo.Query();<br />
<br />
               p++;<br />
         }<br />
         //<br />
         // Free the allocated buffer.<br />
         //<br />
         NetApiBufferFree(BufPtr);<br />
<br />
      }<br />
      else <br />
         printf("Error: %ld\n",res);<br />
   }<br />
   // Continue to call NetShareEnum while <br />
   //  there are more entries. <br />
   // <br />
   while (res==ERROR_MORE_DATA); // end do

Re: TCHAR* and LPTSTR

Prakash Nadar19-Jan-06 5:00

Prakash Nadar

19-Jan-06 5:00

as i can see from here, your real problem is probably not cout<<strPath<<endl;. I guess that cout statement is a debug output statement.

if you want to fix that part, you have to use wcout and it will print properly.

Is there any other problem in your code beside printing?

-Prakash

Re: TCHAR* and LPTSTR

kakan19-Jan-06 2:21

kakan

19-Jan-06 2:21

This maybe is a stupid question but I have to ask:
Are your program using UNICODE?
In that case, it's perfectly understandable:
The console doesn't want UNICODE, so when your 't' is written to the consol, the console sees a 't', followed by a \0.
And since \0 is a string terminator, the output is terminated.
Could this be the case here?

Re: TCHAR* and LPTSTR

kelprinc19-Jan-06 2:24

kelprinc

19-Jan-06 2:24

Yes i am programing in unicode.
So what shld i do

Kelvin Chikomo

Re: TCHAR* and LPTSTR

kakan19-Jan-06 2:28

kakan

19-Jan-06 2:28

Make sure your console output is in plain ANSI

Re: TCHAR* and LPTSTR

kelprinc19-Jan-06 2:30

kelprinc

19-Jan-06 2:30

I am not printing any thing to the console as yet.

You can look at the above threads to see my code.

Kelvin Chikomo

Re: TCHAR* and LPTSTR

David Crow19-Jan-06 2:56

David Crow

19-Jan-06 2:56

kelprinc wrote:

I am not printing any thing to the console as yet.

Sure you are. What do you think cout is for?

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Re: TCHAR* and LPTSTR

kelprinc19-Jan-06 3:20

kelprinc

19-Jan-06 3:20

I am now trying to use the W2A conversion but im realy doubting it

Kelvin Chikomo

Re: TCHAR* and LPTSTR

David Crow19-Jan-06 3:23

David Crow

19-Jan-06 3:23

You need to use wcout instead of cout.

"The words of God are not like the oak leaf which dies and falls to the earth, but like the pine tree which stays green forever." - Native American Proverb

Re: TCHAR* and LPTSTR

Prakash Nadar19-Jan-06 4:56

Prakash Nadar

19-Jan-06 4:56

if you are using unicode build then you should use unicode set of apis to work on them.

If you really need to work on multibyte string then you may have to use WideCharToMultiByte api to do the convertion.

-Prakash

change the base class after finishing project

Anu_Bala19-Jan-06 0:53

Anu_Bala

19-Jan-06 0:53

I have done one coding in doc/view,i have started the coding in base class as CView...can i change it to CEditView after finished my coding??

Re: change the base class after finishing project

toxcct19-Jan-06 1:00

toxcct

19-Jan-06 1:00

Anu_Bala wrote:
can i change it to CEditView after finished my coding??

i think so, because looking at the classes hierarchy[^], CEditView[^] inherits from CView...

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Re: change the base class after finishing project

Owner drawn19-Jan-06 1:00

Owner drawn

19-Jan-06 1:00

You've got to replace every instance of CView with CEditView. Rest will be fine.

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Re: change the base class after finishing project

Anu_Bala19-Jan-06 1:03

Anu_Bala

19-Jan-06 1:03

I did that..But error is occured.

Re: change the base class after finishing project

Owner drawn19-Jan-06 1:04

Owner drawn

19-Jan-06 1:04

What is the error? Please mention it clearly.

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--Never say quits
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Re: change the base class after finishing project

Anu_Bala19-Jan-06 1:22

Anu_Bala

19-Jan-06 1:22

Ya...I got solution...Thanx..

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