如何正确地将unsigned char转换为CString，然后再次将CString的结果反向转换为unsigned char？ [英] How to correctly convert unsigned char to CString and once again, reversely convert to the result of CString to unsigned char?

问题描述

我在将未签名的char转换为CString并将其反向转换，将转换后的CString的结果转换为unsigned char时遇到问题。

I have problems with Converting unsigned char to CString and reversely, converting the result of converted CString to unsigned char.

首先，我尝试使用CString.append（ ）;

first, I try to using CString.append();.

//////////////////////////

///////////////////////////

CString result2;
CString result3;
unsigend char unchar_result[9];
unchar_result = {143, 116, 106, 224, 101, 104, 57, 157};
unchar_result[8] = NULL;

for(int i=0; i<8; i++){
     result2=(char)temp[i];
     result3.append(result2);
}

//////////////// //////////

//////////////////////////

因此，我认为result3被正确替换。

as a result, I think result3 was correctly substituted.

如果我通过ASCII代码看到 unchar_result，则unchar_result =？tj？eh9？结果为？tj？eh9？

if I saw 'unchar_result' by the ASCII code, then unchar_result = "?tj?eh9?" and result3 was "?tj?eh9?" too.

但是我想将（CString）result3反向转换为无符号字符矩阵。

But I want to reversely convert (CString)result3 to unsigned char matrix.

unsigned char a;
unsigned char testdecode[8];
for(int i=0; i<8 ; i++){
  a=result3.GetAt(i);
  testdecode[i]=a

}

，结果是？tj？eh9？但是值是{63，116，106，63，101，104，57，63} ...我希望结果是{143，116，106，224，101，104，57，157}。

after converting, the result was "?tj?eh9?" but, the value was { 63, 116, 106, 63, 101, 104, 57, 63}... i expect the result was { 143, 116, 106, 224, 101, 104, 57, 157 }.

下一步，我再次尝试使用CStringA。

next, I try again using CStringA.

CStringA result6;
result6(unchar_result);

我可以通过调试工具的局部变量窗口看到该值。然后，结果6是뢶j？h9앀儆？而且int len = result6.GetLength（）= 13。

and I can see the value through the local variable window of the debug tool. then, result6 was "뢶j?h9앀儆?" moreover int len = result6.GetLength() = 13.

如何正确将unsigned char转换为CString并进行逆运算？

How to correctly convert unsigned char to CString and to do inverse?

推荐答案

转换为CString非常容易，只需将 unsigned char * 传递给c'tor。从 CString 到 unsigned char * 的转换要花点功夫，请参见下文。

Conversion to CString is pretty easy, just pass the unsigned char* to the c'tor. Conversion from CString to unsigned char* is a little more work, see below.

unsigned char orig[] = "hello world";
std::cout << orig << " (unsigned char *)" << std::endl;

// Convert to a CString
CString cstring(orig);
std::cout << cstring << " (CString)" << std::endl;

// Convert to a unsigned char*
const size_t newsize = (cstring.GetLength() + 1);
unsigned char* nstring = new unsigned char[newsize];
strcpy_s((char*)nstring, newsize, cstring);
std::cout << nstring << " (unsigned char*)" << std::endl;

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