Regarding Converting of an application to Unicode.

Hi,
I am concerting an aaplication to UNicode.It is using STL and CAN NOT USE MFC.

what I did is , i declare

_UNICODE,UNICODE in projects->Settings->C/C++ tab->preprocessor settings

I declare
typedef basic_string<TCHAR> tstring in the file

and replace all the occurance with tstring.

Now the problem is:

for the statement

string strTemp[3]={"A","B","C"};

I replaced it with

tstring strTemp[3]={"A","B","C"};

it is giving me error at the compilation time.
error C2440: 'initializing' : cannot convert from 'char [4]' to 'class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> >'

can u suggest some solution for this.

other than this,what function I can use in place of compare.
say for example, I am having 2 strings, and comparing like this
say
string str1;string str2;
str1.compare(str2).

when I replace this, with tstring like this

tstring str1;tstring str2;
str1.compare(str2).//now here it is giving error.

Pl. suggest some solution for these problems..

Once again I CAN NOT USE MFC.

Regs

use _T("A") instead of "A"

just check this link

convert an application to UNICODE


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Hi,
I am converting an application to UNICODE.This application is a dll.

I have defined the _UNICODE,UNICODE in to preprocessor definition.

Here I am MOT USING MFC.

It is using only STL functions.

Do I need to mention the "wWinMainCRTStartup" in to
Project->Settings->Link->Entry Point Symbol ???

If I am not defing this, it is compiling properly.

If I define this, it gives me the following

DebugU/RtfHtmlConverter.dll : warning LNK4086: entrypoint "_wWinMainCRTStartup" is not __stdcall with 12 bytes of arguments; image may not run
LIBCMTD.lib(wwincrt0.obj) : error LNK2001: unresolved external symbol _wWinMain@16

Cab u suggest some solution for this

Regs

Its better to do in Console Application to avoid this error.

Quote:

---

Originally Posted by developerid

Hi,
I am converting an application to UNICODE.This application is a dll.

I have defined the _UNICODE,UNICODE in to preprocessor definition.

---

This is not the correct way to do it. What you need to do is go to
Project Properties->Configuration Properties->General->Character Set
and change it to "Use Unicode Character Set".

Quote:

---

Do I need to mention the "wWinMainCRTStartup" in to
Project->Settings->Link->Entry Point Symbol ???

---

Not if you do it the way I mentioned above. That setting takes care of everything for you.

For a console app your main should be

Code:

---

int __cdecl _tmain(int argc, _TCHAR* argv[]);

---

For a Windows app your main should be

Code:

---

int APIENTRY _tWinMain(HINSTANCE hInstance,
    HINSTANCE hPrevInstance,
    LPTSTR    lpCmdLine,
    int      nCmdShow);

---

I think you didn't change the subsystem setting. In link tab in the bottom edit you will see a subsystem there you need to replace the windows with console.

I have entry point as
BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID /*lpReserved*/)
{
if (dwReason == DLL_PROCESS_ATTACH)
{
_Module.Init(ObjectMap, hInstance, &LIBID_RTFHTMLCONVERTERLib);
DisableThreadLibraryCalls(hInstance);
}
else if (dwReason == DLL_PROCESS_DETACH)
_Module.Term();
return TRUE;
}

what to change for this entry point??

Regs

Quote:

---

Originally Posted by developerid

I have entry point as
BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID /*lpReserved*/)

---

Sorry, forgot this was a DLL. Your main is fine. It doesn't take any string parameters so there is no _t version. However, change to Unicode like I said by using the General Settings. This will define the *UNICODE symbols for you and change to the correct entry point.

what I did is
I define the symbol _UNICODE and UNICODE in
Project->Settings->c/c++tab->General->Preprocessor definition

is this much is sufficient or some other else needs to be done...

Secondly I am not getting the path
Project Properties->Configuration Properties->General->Character Set.

where I will get this??

Regs

Check this one dude..
happen to come across this site

_WinMain@16 Unresolved External

see the messages that is there in the bottom.

hope this helps.

Quote:

---

Originally Posted by developerid

I changed subsystem to console, but the same error is there.

Secondly I ma not getting the path
Project Properties->Configuration Properties->General->Character Set.

where I will get this??

Regs

Vineet

---

My example is for VC++ 7.0 and above, while you appear to be using VC++ 6.0. I checked MSDN and it looks like VC++ 6.0 didn't have this option. So I guess you're stuck with defining the UNICODE, _UNICODE symbols manually. For the entry point, I suggest you leave it empty. For a DLL it should be using DllMainCRTStartup, and since there's no difference between MCBS & UNICODE DllMain, the entry point should be left the same.

Quote:

---

If you are using Unicode and MFC, you will get an unresolved external on _WinMain@16 if you don't create an entrypoint to wWinMainCRTStartup; use the /ENTRY.

---

Check this:

Linker Tools Error LNK2001

Hi Guys,

Thanks for your reply.I am using VC6.0.
SO I have done this a s per ur suggestion..

Once again Thanks for ur help and time devoted by u.

Regs

Hi,
There is a doubt regarding UNICODE conversion.
when I am converting an application to Unicode, do I need to replace BOOL, bool,int with something specific.. ??? or can they be as it is...

if yes, than what r they...

Hi,
Pl. clarify this doubt..
If I am converting an application, than is it necessary to replace
int with DWORD,
char[] to char*, and other similiar one.

Regs

You need not worry about int, bool, BOOL and DWORD. Only character types:

char[] to TCHAR[]

and

char* to TCHAR*

Thanks for clarification.................

Regs