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Index > Windows > [solved] sprintf did exist variant pointer to array ?

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Roman



Joined: 21 Apr 2012
Posts: 983
Roman
I know this.
cinvoke sprintf,str, "%s %d %s", "one", 2, "3"

But i need dynamic changed parameters !
And i search somthing like this:
Code:
pParams dd pTxt1,pInt1,pInt2
pTxt1 db 'one',0
pInt1 dd 2
pInt2 dd 3

cinvoke sprintf,str, "%s %d %d", pParams
    

I don`t want do loop:
for (i = 0; i<3; i++)
sprintf("%d ", pParams[i]);
Post 10 Jan 2021, 13:34
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17857
Location: In your JS exploiting you and your system
revolution
Read about vsprintf

BTW: This isn't Windows related, it is about the C runtime library.
Post 10 Jan 2021, 13:51
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Roman



Joined: 21 Apr 2012
Posts: 983
Roman
Thanks.
This is what i wanted.
Post 10 Jan 2021, 14:24
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ProMiNick



Joined: 24 Mar 2012
Posts: 613
Location: Russian Federation, Sochi
ProMiNick
by the way why so exotic as sprintf?
why not user32.dll.wsprintfA? user32.dll.wsprintfW?
or with varargs user32.dll.wvsprintfA? user32.dll.wvsprintfW?
in user32.dll more faster variant
Post 10 Jan 2021, 14:48
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Roman



Joined: 21 Apr 2012
Posts: 983
Roman
wvsprintfA
https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-wvsprintfa
The buffer that is to receive the formatted output. The maximum size of the buffer is 1,024 bytes.

Hm. Strange why only 1 024 bytes ?
Post 10 Jan 2021, 18:50
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17857
Location: In your JS exploiting you and your system
revolution
Roman wrote:
Hm. Strange why only 1 024 bytes ?
Ask MS, they decided it.
Post 10 Jan 2021, 23:49
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AsmGuru62



Joined: 28 Jan 2004
Posts: 1422
Location: Toronto, Canada
AsmGuru62
Also, wsprintf() does not format floating point values, but sprintf() does.
Post 11 Jan 2021, 04:32
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