Questions tagged [widestring]
112 questions
5
votes
4 answers
Why doesn't wstring::c_str cause a memory leak if not properly deleted
Code Segment 1:
wchar_t *aString()
{
wchar_t *str = new wchar[5];
wcscpy(str, "asdf\0");
return str;
}
wchar_t *value1 = aString();
Code Segment 2
wstring wstr = L"a value";
wchar_t *value = wstr.c_str();
If value from code segment…
monksy
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5
votes
4 answers
2-byte (UCS-2) wide strings under GCC
when porting my Visual C++ project to GCC, I found out that the wchar_t datatype is 4-byte UTF-32 by default. I could override that with a compiler option, but then the whole wcs* (wcslen, wcscmp, etc.) part of RTL is rendered unusable, since it…
Seva Alekseyev
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- 281
5
votes
2 answers
Appending UnicodeString to WideString in Delphi
I'm curious about what happens with this piece of code in Delphi 2010:
function foo: WideString;
var
myUnicodeString: UnicodeString;
begin
for i:=1 to 1000 do
begin
myUnicodeString := ... something ...;
result := result +…
Roddy
- 66,617
- 42
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- 277
4
votes
3 answers
How do i construct a WideString with a diacratic in a non-unicode Delphi version?
i am trying to construct a (test) WideString of:
á (U+00E1 Small Letter Latin A with acute)
but using it's decomposed form:
LATIN SMALL LETTER A (U+0061) COMBINING ACUTE ACCENT (U+0301)
So i have the code fragment:
var
test:…
Ian Boyd
- 246,734
- 253
- 869
- 1,219
4
votes
2 answers
Combining wide string literal with string macro
I have a macro for a character string as follows:
#define APPNAME "MyApp"
Now I want to construct a wide string using this macro by doing something like:
const wchar_t *AppProgID = APPNAME L".Document";
However, this generates a "concatenating…
flashk
- 2,451
- 2
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- 31
4
votes
1 answer
c# : how to convert c# string to c++ wstring and vice-versa
c# code-
string s="おはよう";
I want to send s to c++ dll, as wstring..
how to convert string to wstring in c# ?
Amit
- 219
- 2
- 7
- 14
4
votes
3 answers
How to access characters of a WideString by index?
i have the following code snippit that won't compile:
procedure Frob(const Grob: WideString);
var
s: WideString;
begin
s :=
Grob[7]+Grob[8]+Grob[5]+Grob[6]+Grob[3]+Grob[4]+Grob[1]+Grob[2];
...
end;
Delphi5 complains Incompatible…
Ian Boyd
- 246,734
- 253
- 869
- 1,219
3
votes
3 answers
C++ how convert wide string to base64?
What is the best way to convert wide string to base64?
user694655
- 287
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- 11
3
votes
1 answer
How to call this Delphi function from C#?
i'm having problems calling a delphi function from C# (attempted to read or write protected memory), and was wondering what the correct way of calling the method should be. The Delphi function signature is as follows:
procedure methodToCall(
…
oɔɯǝɹ
- 7,219
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3
votes
1 answer
Does boost test have support for wide strings?
I'm just using BOOST_TEST_MESSAGE(L"blah") and the only thing that is printed out is an hex value such as 0x12345678. Am I missing some configuration? I'm using boost 1.44.
rturrado
- 7,699
- 6
- 42
- 62
3
votes
5 answers
ReadLn working with WideString (utf-8 files)
I use delphi 7.
I need to read a utf-8 file line by line, each line contain a word and its weight (a number)
So I need to read every next line, then divide a line by a separator (tab char) and save this in memory.
So,
1) is there a library to work…
EugeneP
- 11,783
- 32
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3
votes
5 answers
How to return WideString from COM server?
This Interface at _TLB.pas file
// *********************************************************************//
// Interface: ITMyCOM
// Flags: (256) OleAutomation
// GUID: {D94769D0-F4AF-41E9-9111-4D8BC2F42D69}
//…
unreturned
- 53
- 2
- 5
3
votes
2 answers
C++ convert between Byte vector and wstring
I need to process the data stored in wide strings at a low level. I am able to convert to a vector of Bytes with the following method:
typedef unsigned char Byte;
wstring mystring = L"my wide string";
Byte const *pointer = reinterpret_cast
Dia McThrees
- 261
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- 7
3
votes
0 answers
Convert std::string with a binary sequence of bytes into a std::wstring with character set from current locale
At the moment I read the same file twice, because I need two different representations: (a) a raw byte sequence without any conversion, (b) a text representation with bytes being converted into the current execution character set. Basically, the…
user2690527
- 1,729
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- 38
3
votes
2 answers
Boost library, using std::wstring as filename with boost::property_tree::read_xml
I recently started using std::wstring instead of std::string to avoid weird results with non-ASCII characters, and I didn't find a way to read an XML file where the path is of type std::wstring using the boost library.
I'm using the boost library…
Linus
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