C++ 与“LPCWSTR”类型的参数不兼容
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Incompatible with parameter of type "LPCWSTR"
提问by Bogdan Tkachenko
#include "stdafx.h"
#include <windows.h>
#include <stdio.h>
#include <iostream>
#include <dos.h>
using namespace std;
class Dir
{
public:
char* cat;
Dir()
{
cout << "(C:/*)\n";
cat = new char[50];
cin >> cat;
}
void virtual ShowFiles()
{
}
};
class Inside : public Dir
{
public:
void virtual ShowFiles()
{
HANDLE hSearch;
WIN32_FIND_DATA pFileData;
hSearch = FindFirstFile(cat, &pFileData);
if (hSearch != INVALID_HANDLE_VALUE)
do
{
// if ((pFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
cout << pFileData.cFileName << "\n";
} while (FindNextFile(hSearch, &pFileData));
FindClose(hSearch);
}
};
int main()
{
Dir *obj1[2];
obj1[1] = new Inside;
obj1[1]->ShowFiles();
return 0;
}
So I have a program, I need to show with dynamic char cat all file in directory, but it is compilable in Borland C++ but in Visual Studio 15 + Resharper it doesn't work. Severity Code Description Project File Line Error (active) argument of type "char *" is incompatible with parameter of type "LPCWSTR"
所以我有一个程序，我需要用动态字符 cat 显示目录中的所有文件，但它可以在 Borland C++ 中编译，但在 Visual Studio 15 + Resharper 中它不起作用。严重性代码说明“char *”类型的项目文件行错误（活动）参数与“LPCWSTR”类型的参数不兼容
回答by Anton Malyshev
To compile your code in Visual C++ you need to use Multi-Byte char WinAPI functions instead of Wide char ones.
要在 Visual C++ 中编译代码，您需要使用多字节字符 WinAPI 函数而不是宽字符函数。
Set Project -> Properties -> General -> Character Setoption to Use Multi-Byte Character Set
设置项目 -> 属性 -> 常规 -> 字符集选项以使用多字节字符集
回答by M Shajeeh Mustafa
I actually found another way to resolve this error since above method did not work for me.
我实际上找到了另一种解决此错误的方法，因为上述方法对我不起作用。
I casted all my constant character strings with (LPCWSTR). The solution looks like this
Earlier
我用(LPCWSTR). 该解决方案看起来像这样
早些时候
MessageBox(NULL,"Dialog creation failed! Aborting..", "Error", MB_OK);
After casting to LPCWSTR
转换为 LPCWSTR 后
MessageBox(NULL, (LPCWSTR) "Dialog creation failed! Aborting..", (LPCWSTR) "Error", MB_OK);
So just copying the (LPCWSTR)and pasting wherever this error was generated resolved all my errors.
因此，只需(LPCWSTR)在生成此错误的任何位置复制并粘贴即可解决我的所有错误。
回答by Stefan
Another way to come by this issue, is to use the Lmacro in front of your string.
解决此问题的另一种方法是L在字符串前面使用宏。
MessageBox(NULL, L"Dialog creation failed! Aborting..", L"Error", MB_OK);
See: What does the 'L' in front a string mean in C++?
or
或者
回答by Li Kui
you can use wchar_t
你可以使用wchar_t
class Dir
{
public:
wchar_t* cat;
Dir()
{
wcout << "(C:/*)\n";
cat = new wchar_t[50];
wcin >> cat;
}
void virtual ShowFiles()
{
}
};
In Visual Studio 2013 and later, the MFC libraries for multi-byle character encoding (MBCS) will be provided as an add-on to Visual Studio
在Visual Studio 2013 及更高版本中，用于多字节字符编码 ( MBCS)的 MFC 库将作为 Visual Studio 的附加组件提供
回答by 8Observer8
It will work for any settings:
它适用于任何设置：
#include <tchar.h>
MessageBox(NULL, _T("Dialog creation failed! Aborting.."), _T("Error"), MB_OK);
