How to correctly convert unsigned char to CString and once again, reversely convert to the result of CString to unsigned char?

Question

I have problems with Converting unsigned char to CString and reversely, converting the result of converted CString to unsigned char. 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); } ``` ////////////////////////// as a result, I think result3 was correctly substituted. if I saw 'unchar_result' by the ASCII code, then unchar_result = "?tj?eh9?" and result3 was "?tj?eh9?" too. 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 } ``` 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 }. next, I try ag…

Accepted Answer

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;
```

How to correctly convert unsigned char to CString and once again, reversely convert to the result of CString to unsigned char?

Solution

Problem