I am wondering how to use wsprintf in asm... when I do

invoke wsprintf,bufOutput,concat,string1,string2

masm spits out some weird code...

bufOutput is a 400h byte buffer, concat is "%s%s" , and string1 and string2...

You need to use addresses. i.e.:

invoke wsprintf, addr bufOutput, addr concat, addr string1, addr string2

Or you could use :

invoke lstrcat, addr string1, addr string2

invoke lstrcpy, addr bufOutput, addr string 1

Hope that helps mate

also pay attention to the fact that its a c style api, NOT stdcall like 99.9% of the other windows api's, so YOU have to balance the stack after calling it... (add esp, (4* amount_of_parameters_passed)...

Actually by using the INVOKE directive, MASM should correctly handle the stack balancing (the wsprintf prototype in MASM32 uses the C calling convention).

But if you push the parameters manually and use CALL , then what evlncrn8 said applies.

Thanks guys, working nicely

After your last few questions I'm intrigued as to what you are coding

After your last few questions I'm intrigued as to what you are coding

you'll see soon