c++ wchar_t

[meereck]

Hello,
I have been playing with utf32 characters and I cannot get the following working:

#include <iostream>

using namespace std;

int main(int argnum, char *argstr[])
{
	wprintf(L"test\n");
	setlocale(LC_CTYPE,"th_TH");
	
	wchar_t c=0xe5b;//L'ข';
	unsigned long test = (unsigned long)c;
	
	wcout<<L"value "<<test<<endl;
	wprintf(L"hex: %lc %x\n",c,test);
	return 0;
}

The problem is that

wprintf(L"hex: %lc %x\n",c,test);

always returns "hex: ? e5b" (the question mark is the issue).

Can anybody please tell me what is incorrect in my code?
thanks in advance,
Regards Meereck

[stealth86]

Hi,

Two things jump out at me.

1. The size of wchar_t is implementation dependent. On all of the platforms I've worked with, wchar_t is actually 16 bits, not 32bits.

2. Just because you can specify a unicode character by hex value, doesn't mean your OS actually has anything to map it to. Do you have that language installed on your machine? If not that may explain the question mark.

[meereck]

Hi,
I think it is 32bit on my Ubuntu 9.10 32bit:

wchar_t c=0xe5b;//L'ข';
wcout <<L"size:"<<sizeof(c)<<endl;

Returns 4

2) Hmm, you are right, I think that is the cause

Thank you
Regards Meereck