ASM Community

How can i put carriage return in a string using szCatStr or is it possible. In other words i want to seperate string info into different lines.

And most importantly will it work with the DrawText api.

Don't want to investigate consoles right now. Just using client area of standard window.

thanx in advance

Well if you're going to use szCatStr, can't you just use a string containing a crlf?


.data
string1 db "stuff",0
string2 db "more stuff",0
crlf db 13,10,0 ;or is that 10,13?
buffer db 64 dup(0)

.......
......
.....
invoke szCatStr,addr buffer,addr string1
invoke szCatStr,addr buffer,addr crlf
invoke szCatStr,addr buffer,addr string2
invoke szCatStr,addr buffer,addr crlf
invoke MessageBox,0,addr buffer,0,0
.....
....
....

That's odd because right after I posted that code I actually threw together a little test app and the messagebox text looked like this:
stuff
more stuff


I've already deleted it, and can't remember if 10 is the cr or 13 is, but other than that it worked fine. Whether that'll work with DrawText I don't know, but the messagebox looked exactly like intended.

-shrugs-

Titan,

The szCatStr proc works fine but if you need to concantenate a number of strings which include the CRLF pair, have a look at a procedure written by Alex (The Svin) called szMultiCat as it is very powerful and fast with this type of work.

Set up a buffer that is big enough to hold all of the string data you need and write a zero at the beginning so that it is read as a zero length string then use szMultiCat to appens as much as you like to it.

    LOCAL buffer{256]:BYTE    ; allocate a buffer

    LOCAL CRLF[4]:BYTE

Write ascii 13 and 10 and 2 zeros to the CRLF buffer and then set up the szMultiCat proc to take each string and CRLF to get the string you want.

If it is string data that is fixed you can just write it in the .DATA section.

MyString db "Line one",13,10

         db "Line two",13,10

         db "Last line",0

Regards,

hutch@movsd.com

Erm... you looked at the source code for the masm32.lib? :grin:

Titan,

Here is a macro for simplifying the use of szMultiCat.

  ; ------------------------------------------------------

  ; macro for concantenating strings using the szMultiCat

  ; procedure written by Alexander Yackubtchik.

  ;

  ; USAGE strcat buffer,str1,str2,str3 etc ...

  ; 

  ; buffer must be large enough to contain all of the

  ; strings to append. Limit is set by maximum line

  ; length in MASM.

  ; ------------------------------------------------------

    strcat MACRO arguments:VARARG

        txt equ <invoke szMultiCat,>        ;; lead string

        pcount = 0

          FOR arg, <arguments>

            pcount = pcount + 1             ;; count arguments

          ENDM

        % pcount = pcount - 1               ;; dec 1 for 1st arg

        txt CATSTR txt,%pcount              ;; append number to lead string

          FOR arg, <arguments>

            IF @InStr(1,<arg>,<ADDR>) ne 0

              txt CATSTR txt, <,arg>

            ELSE

              txt CATSTR txt, <,ADDR arg>   ;; append 'ADDR' + args

            ENDIF

          ENDM

        txt                                 ;; put result in code

    ENDM

Regards,

hutch@movsd.com

Attached :)

PROTOTYPE
szMultiCat PROTO C :DWORD,:DWORD,:VARARG

It is in the standard installation of MASM32 v 7 so you may be using an earlier version.

Regards,

hutch@movsd.com