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Hex

Posted on 1998-12-04
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Last Modified: 2011-10-03
I am using Visual C++ 5.0 and am in Dialog mode.

I am trying to convert numbers to Hex. I am using this statement and would like to know how to display the number in hex.

SetDlgItemInt(IDC_STATIC,m_number);

I would also like to know how to recieve a hex number from and EDIT box.

Thanks
Randy
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Question by:randyg
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Answers2000 earned 50 total points
ID: 1179213
Say the number is an int

1. Steps are to convert it to a string, e.g.

(a) if want a CString

int nNumber ;
CString str ;
str.Format( "%x", nNumber )

or
(b) if want a char[] array

int nNumber
char str[256] ;
sprintf( str, "%x", nNumber ) ;

or

(c) another way to do (b) is to use itoa, this allows you to specify the base (e.g. you can use this to convert a integer into any reasonable base, e.g.

_itoa( nNumber, str /* char array */, 16 ) ; // 16 = base 16

2. Set the string into the dialog (works with CString or char array)

SetDlgItemText( IDC_STATIC, str ) ;


See my next comment for extracting from edit boxes.


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Expert Comment

by:Answers2000
ID: 1179214
Right you can can use SetDlgItemText to place text on a static or edit. (simply replace IDC_STATIC with the id of the control)

To get the current text from an edit use GetDlgItemText, then use sscanf to get convert a hex number to a integer

char szOutput[256] ;
GetDlgItemText( IDC_EDIT, szOutput, sizeof szOutput ) ;
int nNumber ;
sscanf( szOutput, "%x", &nNumber ) ;


incidentally %x means use lower case letters in hex numbers, %X means use upper case

I think that's everything you need ?
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Expert Comment

by:The_Brain
ID: 1179215
I agree with Answers2000,  itoa would be a good option, I have written a base x program, which converts any number to any base 2-36.  input a number in anybase and output. If you want it you can have it, just E-mail me.  g_dutoit@hotmail.com.  


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Author Comment

by:randyg
ID: 1179216
Great answers!!!!!

Thanks
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