标准中的奇怪字符::vector<TCHAR*>

Weird characters in a std::vector<TCHAR*>

本文关键字:TCHAR gt lt 字符 标准 vector      更新时间:2023-10-16

试图获取所有子目录,最终在子目录中的所有文件,我将传递一个std :: vector作为对实际获取所有目录的函数的引用。我可以在函数内部表达cfilename,但是一旦返回主,向量具有奇怪的字符。

当前有我的角色设置用于使用Unicode。当我使用多键时,它实际上会打印出奇怪的字符,现在它没有打印。向量确实有东西(Directories.size()返回值> 0)

什么也没想到。希望这是一个很好的问题。谢谢

#include <iostream>
#include <vector>
#include <Windows.h>
#include <tchar.h>
#include <stdio.h>
// Declare function prototypes
DWORD listDirectories(std::vector<TCHAR*>&);
// Global variable that holds the current working path of the program
TCHAR buffer[MAX_PATH];
void main()
{
    // Declare variables, dwCount for return value from listDirectories, directories stores all sub directories, cDirectory stores current directory
    DWORD dwCount;
    //std::vector<TCHAR*> directories;
    std::vector<TCHAR*> directories;
    TCHAR cDirectory[MAX_PATH];
    // Get current directory
    GetCurrentDirectory(MAX_PATH, buffer);
    // Set cDirectory (current directory) to buffer (ATM is current directory) + add \ to the end and make it the working directory
    _tcscpy_s(cDirectory, buffer);
    _tcscat_s(cDirectory, L"\*");
    // dwCount is count of how many directories found, to be used later
    dwCount = listDirectories(directories);
    // Range for loop to print each value in the std::vector<TCHAR*> directories
    for (auto tStr : directories) {
        // Doing wcout here prints weird characters.
        std::wcout << tStr << std::endl;
    }
    std::cin.get();
}   // end void main()
DWORD listDirectories(std::vector<TCHAR*> &directories)
{
    // Declare variables, count used for number of directories, hFind for FindFirstFile, data used to store file data
    DWORD count = 0;
    HANDLE hFind = INVALID_HANDLE_VALUE;
    WIN32_FIND_DATA data;
    TCHAR currentDir[MAX_PATH];
    // Copy the current working directory into currentDir, will be used for subDir
    _tcscpy_s(currentDir, buffer);
    // Append "\*" to buffer to make it a working directory
    _tcscat_s(buffer, L"\*");
    // Find first file in the current working directory, storying data in data as a reference
    hFind = FindFirstFile(buffer, &data);
    // If hFind is not an invalid handle
    if (hFind != INVALID_HANDLE_VALUE) {
        // Go through each file in the directory
        do
        {
            // If the file attributes is a directory
            if (data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
            {
                // Create a sub directory
                TCHAR subDir[MAX_PATH];
                // Fill subDir with current directory + "\" + dir name
                _tcscpy_s(subDir, currentDir);
                _tcscat_s(subDir, L"\");
                _tcscat_s(subDir, data.cFileName);
                // Fill subDir with current directory + "\" + dir name
                //sprintf_s(subDir, "%s%s%s", currentDir, "\", data.cFileName);
                // Add directory to my directories (std::vector<TCHAR*>) if count > 1, because I don't want the "." and ".." directories
                if (count > 1){
                    directories.push_back(subDir);
                    // Doing wcout here prints the subDir just fine and works properly
                    std::wcout << subDir << std::endl;
                }
                // Add 1 to count, used as the return for how many directories found in the current directory
                count++;
            }
        } while (FindNextFile(hFind, &data) != 0);
    }
    // Return count of directories found. -2 to get rid of the "." and ".." directories
    return (count - 2);
}   // end DWORD listDirectories(std::vector<TCHAR*>&)

在您的listDirectories()功能

TCHAR subDir[MAX_PATH];
...
directories.push_back(subDir);

subDir是函数内do ... while循环的局部数组,其寿命以循环的每一个迭代结束。

std::vector<TCHAR*> directories;更改为std::vector<std::basic_string<TCHAR>> directories;,您的代码应正常工作。现在,您将复制目录名称,然后将其添加到vector


另一种选择是忘记所有TCHAR东西,而在处理Windows API时只使用所有内容。

std::vector<std::wstring> directories;
wchar_t cDirectory[MAX_PATH];
...
hFind = FindFirstFileW(buffer, &data);

等等