widechar is a generic name for character sets wider than ASCII
The term widechar is a generic name for character sets wider than 8 bits. Generally this means some (unspecified) 16 or 32 bit Unicode encoding.
Questions tagged [widechar]
180 questions
36
votes
4 answers
Windows API: ANSI and Wide-Character Strings -- Is it UTF8 or ASCII? UTF-16 or UCS-2 LE?
I'm not quite pro with encodings, but here's what I think I know (though it may be wrong):
ASCII is a 7-bit, fixed-length encoding, with the characters you can find in ASCII charts.
UTF8 is an 8-bit, variable-length encoding. All characters can be…
user541686
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36
votes
7 answers
Why does the Java char primitive take up 2 bytes of memory?
Is there any reason why Java char primitive data type is 2 bytes unlike C which is 1 byte?
Thanks
realnumber
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30
votes
2 answers
What is a "wide character string" in C language?
I came across this in the book:
wscanf(L"%lf", &variable);
where the first parameter is of type of wchar_t *.
This s different from scanf("%lf", &variable); where the first parameter is of type char *.
So what is the difference than. I have never…
quantum231
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19
votes
5 answers
WideCharToMultiByte() vs. wcstombs()
What is the difference between WideCharToMultiByte() and wcstombs()
When to use which one?
Greenhorn
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19
votes
3 answers
What's the difference between printf("%s"), printf("%ls"), wprintf("%s"), and wprintf("%ls")?
Consider this sample program:
#include
#include
#include
int main()
{
std::string narrowstr = "narrow";
std::wstring widestr = L"wide";
printf("1 %s \n", narrowstr.c_str());
printf("2 %ls \n",…
Display Name
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15
votes
1 answer
Understanding and writing wchar_t in C
I'm currently rewriting (a part of) the printf() function for a school project.
Overall, we were required to reproduce the behaviour of the function with several flags, conversions, length modifiers ...
The only thing I have left to do and that gets…
kRYOoX
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12
votes
3 answers
Displaying wide chars with printf
I'm trying to understand how does printf work with wide characters (wchar_t).
I've made the following code samples :
Sample 1 :
#include
#include
int main(void)
{
wchar_t *s;
s = (wchar_t…
vmonteco
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10
votes
2 answers
What is the difference between WideChar and AnsiChar?
I'm upgrading some ancient (from 2003) Delphi code to Delphi Architect XE and I'm running into a few problems. I am getting a number of errors where there are incompatible types. These errors don't happen in Delphi 6 so I must assume that this is…
Daisetsu
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10
votes
3 answers
Read wide char from a stream created with fmemopen
I'm trying to read a wide char from a stream that was created using fmemopen with a char *.
char *s = "foo bar foo";
FILE *f = fmemopen(s,strlen(s),"r");
wchar_t c = getwc(f);
getwc throws a segmentation fault, I checked using GDB.
I know this is…
MD XF
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8
votes
1 answer
C++: wide characters outputting incorrectly?
My code is basically this:
wstring japan = L"日本";
wstring message = L"Welcome! Japan is ";
message += japan;
wprintf(message.c_str());
I'm wishing to use wide strings but I do not know how they're outputted, so I used wprintf. When I run…
John D.
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7
votes
5 answers
Use string litterals in a "char type" templated class
I have a template class in C++ which takes as a char_type template parameter the character type, such as char, wchar_t, char32_t, etc... The class then use std::basic_string in the code.
Then somewhere in the class I fill a table of…
galinette
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7
votes
2 answers
wprintf: %p with NULL pointer
As I was writing a unit test, I stumbled upon some odd behavior from glibc, regarding "%p" and the NULL pointer.
If I have a line such as printf("NULL pointer is %p\n", NULL);, then I see NULL pointer is (nil) printed to the screen, as I…
Drew McGowen
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6
votes
2 answers
Macro Without Space
I have a macro I use for debugging.
#define diagnostic_arg(message,...) fprintf(stderr,message,__VA_ARGS__)
I've found that I need to use wide-chars in my program, so I would like to change just my macro and have everything work:
#define…
Richard
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6
votes
1 answer
Why is © (the copyright symbol) replaced with (C) when using wprintf?
When I try to print the copyright symbol © with printf or write, it works just fine:
#include
int main(void)
{
printf("©\n");
}
#include
int main(void)
{
write(1, "©\n", 3);
}
Output:
©
But when I try to print it…
S.S. Anne
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6
votes
2 answers
_T( ) macro changes for UNICODE character data
I have UNICODE application where in we use _T(x) which is defined as follows.
#if defined(_UNICODE)
#define _T(x) L ##x
#else
#define _T(x) x
#endif
I understand that L gets defined to wchar_t, which will be 4 bytes on any platform. Please correct…
Nagasai Sowmya
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