wchar-t

问题 I'm trying to read Unicode characters from a text file into a wchar_t pointer array, using wifstream . Here is a code snippet: locale::global(std::locale("en_US.UTF-8")); std::wifstream inputFile("gsmCharacterSet.txt", std::ifstream::binary | std::ifstream::ate); int length = inputFile.tellg(); inputFile.seekg(0,inputFile.beg); wchar_t *charArray = new wchar_t[length]; inputFile.read(charArray,length); It's not working. The length returned is 252 which is the correct file size in bytes.

问题 In my code I have an array of wchar_t: wchar_t paths [6] = {L"C:\\Program Files\\SomeAppsSuiteFolder1", L"C:\\Program Files\\SomeAppsSuiteFolder2", L"C:\\Program Files (x86)\\SomeAppsSuiteFolder1", L"C:\\Program Files (x86)\\SomeAppsSuiteFolder2", L"C:\\SomeAppsSuiteFolder1", L"C:\\SomeAppsSuiteFolder2"}; Later on I use the array in for loop. The problem is, that for this line I get following errors: error: too many initializers for 'wchar_t [6]' error: initializer-string for array of chars

问题 In my code I have an array of wchar_t: wchar_t paths [6] = {L"C:\\Program Files\\SomeAppsSuiteFolder1", L"C:\\Program Files\\SomeAppsSuiteFolder2", L"C:\\Program Files (x86)\\SomeAppsSuiteFolder1", L"C:\\Program Files (x86)\\SomeAppsSuiteFolder2", L"C:\\SomeAppsSuiteFolder1", L"C:\\SomeAppsSuiteFolder2"}; Later on I use the array in for loop. The problem is, that for this line I get following errors: error: too many initializers for 'wchar_t [6]' error: initializer-string for array of chars

问题 I have the following code on Linux:- rc = iconv_open("WCHAR_T", SourceCode); prior to using iconv to convert the data into a wide character string ( wchar_t ). I am trying to understand what it achieves in order to port it to a platform where the option on parameter 1, "WCHAR_T" , does not exist. This leads to sub-questions such as: Is there a single representation of wchar_t on Linux? What codepage does this use? I imagine maybe UTF-32 Does it rely on any locale settings to achieve this? I'm

问题 Currently, the logic in glibc source of perror is such: If stderr is oriented, use it as is, else dup() it and use perror() on dup() 'ed fd . If stderr is wide-oriented, the following logic from stdio-common/fxprintf.c is used: size_t len = strlen (fmt) + 1; wchar_t wfmt[len]; for (size_t i = 0; i < len; ++i) { assert (isascii (fmt[i])); wfmt[i] = fmt[i]; } res = __vfwprintf (fp, wfmt, ap); The format string is converted to wide-character form by the following code, which I do not understand:

问题 I want to output a text to a file via two pointers that I have declared: wchar_t *Col1="dsffsd", *Col2="sdfsf"; Here is what I have tried: std::ofstream fout; fout.open(NativeDatabasePathHist); fout<<"testing"; fout<<" "<<Col1<<" "<<Col2; fout.close(); And here is what I am getting: testing 113 113 Why is it that when I print Col1 and Col2 , I am getting numbers instead of strings? 回答1: First, use std::wofstream instead of std::ofstream . Also, use the L prefix on your text string to indicate

问题 I want to output a text to a file via two pointers that I have declared: wchar_t *Col1="dsffsd", *Col2="sdfsf"; Here is what I have tried: std::ofstream fout; fout.open(NativeDatabasePathHist); fout<<"testing"; fout<<" "<<Col1<<" "<<Col2; fout.close(); And here is what I am getting: testing 113 113 Why is it that when I print Col1 and Col2 , I am getting numbers instead of strings? 回答1: First, use std::wofstream instead of std::ofstream . Also, use the L prefix on your text string to indicate

问题 what is the equivalent function for isalpha or isalnum using wchar_t? wctype ? an example would be nice also thanks 回答1: iswalpha , iswalnum . Same usage. Docs - Windows (msdn) iswalpha iswalnum Docs - Linux (opengroup.org) iswalpha iswalnum 回答2: You include tag "localization" in your question. In case of writing of international application you should clear define what do you mean under alphabetical or numerical characters . If you write programs for Windows I'll recommend you to use

问题 The following code works as expected. The source code, file "file.txt" and "out.txt" are all encoded with utf8. But it does not work when I change wchar_t to char16_t at the first line in main() . I've tried both gcc5.4 and clang8.0 with -std=c++11 . My goal is to replace wchar_t with char16_t , as wchar_t takes twice space in RAM. I thought these 2 types are equally well supported in c++11 and later standards. What do I miss here? #include<iostream> #include<fstream> #include<locale>

问题 Copying to clipboard in HTML format works when I use char , but if I use wchar_t it doesn't work When I paste it it's just EMPTY here is my code Plase Help me Or is there a better way to use unicode(not using wchar_t)? If you do help me void copyStringEnd(wchar_t *string, wchar_t *buffer) { int i = 0; int string_StartIndex = 0; while (string[string_StartIndex] != NULL) { string_StartIndex++; } while (buffer[i] != NULL) { string[string_StartIndex + i] = buffer[i]; i++; } string[string