C++: Convert unsigned char to CString and char *

[codercoder]

It is a C++ questions:
How to Convert unsigned char to CString and char *; and backward as well?

[Banfa]

unsigned char to char * is fairly simple

unsigned char uc = 'A';
 
char *p = (char *)&uc;
 
/* and back */
 
uc = *p;  /* this may produce a warning that can be removed with a cast */
 

The cast is needed because you are loosing the unsigned qualifier. Of course this does not give you a pointer to a c string because a c string requires zero termination there for a single character requires an array of at least 2 characters so that the zero terminator can be included.


unsigned char to CString is a little more problematic, I can't remember if you can just assign a char to a CString, if so no problem. If not the easiest way is probably to clear the CString and add (+) the unsigned char probably casting it first.

unsigned char uc ='A';
 
CString str;
 
str = (char)uc;  /* Not sure if this works */
 
str = "";          /* fairly sure this will work */
str += (char)uc;
 
/* and back */
 
uc = str[0];  /* Extract the first character of str */
 

[Banfa]

I just checked you can construct a CString from an unsigned char like this

unsigned char uc = 'A';
 
CString str((char)uc);
 

[codercoder]

Thank you all very much!