Viewing NULL chars in Text Box???

[sirbeatsalot]

How do i view a buffer full of binary data, which may contain char(0), in an edit box????

The edit box seems to look for the first NULL char in the buffer i am tring to display. Then it just thinks that's the end of the string i want to display. VB 6.0 allows text boxes to show NULL chars. How to do it in VC++ 6.0.

example... if my buffer contains the char(0) i wont be able to view the rest of the buffer in an edit box

char *buf="chri\0s";
SetDlgItemText(IDC_TXTOUT, buf);

displays... 'chri'

plz.. help.

 

[Leibnitz]

I dont know if it is what you are searching for:
but i think that you can simply do it like this:

char *buf="chri0s";
SetDlgItemText(hwnd,IDC_TXTOUT, buf);
displays...chri0s.

or if you want do display binary numbers:
char *buf="1101100";
SetDlgItemText(hwnd,IDC_TXTOUT, buf);
displays...1101100.

 

[tchouch]

You must replace 0-chars with another sumbols, for example with " " (You can then not see any difference between 0 ant " " in the Box ), or You must show each char in 3 bytes (as numbers 0 - 255), or You must use "\0" - there are no another ways (with RichEdit Box too).

An example:
char buf[256] ="chri\0sbadBoysaredoof\01256";
int len = 25; //25 chars
for(int i = 0; i < 25; i++) {
if( buf == 0) {
buf = ' '; //Or another char
}
}
SetDlgItemText(IDC_TXTOUT, buf);

displays... 'chri sbadBoysaredoof 1256'
Good lake

 

[sirbeatsalot]

Thanks!! I see what you're saying. I still wonder how VB does it.

ex.

text1.text = chr(0);
msgbox(asc(text1.text)) 'Prompts &quot;0&quot;

text1.text = chr(1);
msgbox(asc(text1.text)) 'Prompts &quot;1&quot;

so some how it still stores what character it really is. Oh well, I'll use your method in c++ . thanks.