UChar in C++

Tou could add this at the top of your file:

typedef unsigned char UChar;

or (uglier):

#define UChar (unsigned char)

It's a matter of taste. I guess jkr's solution is better.

The problem is that UChar is not a type. The type you want is an unsigned char. You can either use unsigned char in your code

unsigned char FileName = "\\\\.\\NTDS0";

or you can use UCHAR as jkr mentioned, since it is defined in VC++ standard includes. Or if you want to be able to use UChar, you need to typedef it yourself, as nivel has already explained.

Oh, but wait, there's more.

I don't know what you want UChar to be ... We all assumed that you wanted an unsigned character, since that's generally what that means. But you cannot do:

unsigned char FileName = "\\\\.\\NTDS0";

OR UCHAR or a UChar if it is typedef'd to unsigned char.

"\\\\.\\NTDS0" is not a character. It's an ARRAY of characters.

What you need to do depends on what your going to do with FileName, but you will probably want to do:

unsigned char* FileName = "\\\\.\\NTDS0";


You say "I have a block of C code which runs fine" ... So that means you compiled it and it ran fine ... ?!?! What did you use to compile it, since it does not work in VC? What was UChar defined to in that project?

Sorry conchita.  I tried to post this yesterday but I think EE was having some problems.  I'm giving jkr the points because changing the case from UChar to UCHAR did the trick.  I didn't compile it with UChar.  The CD came with a demo program and source but the demo was already compiled when I got it so I have no way of knowing if the source file I got was slightly different from what they actually compiled for the exe.

I do have another problem though.  I'm trying to update and edit box's variable with a numeric value as I process a loop.  The counter is type long and with each pass through the loop I try to display the progress in an edit box with a line like:

m_display = loopCounter;
UpdateData(FALSE);

(m_display is the CString variable attached to the editbox)

On the next pass through the loop I want to continue the progress with something like:

m_display = m_display + loopCounter;
UpdateData(FALSE);

The goal is to have the edit box update with each pass like this:

1  2  3  4  5 ... 50

I keep getting errors.  Is there a function to convert the long type to a character type like there is in VB and Foxpro?

Thanks for your help guys.  jkr, I'm holding off assigning the points just for a day or two to see if I get any further response.  Thanks again to all.

rmillerSST> changing the case from UChar to UCHAR did the trick

UCHAR FileName = "\\\\.\\NTDS0";

will definitely NOT work. If what you have works, you have something else, other than what you typed in the question. Probably "UCHAR *FileName".

contrary to one of the comments, changing UChar to UCHAR did work and the app compiles and runs fine with that change.  Thanks.