winapiassemblyx86masm32

Assembly - put in buffer register value

My eax register has the following value

EAX DDCCBEE6

I want to put the value of eax to buffer so I can use it as it, I mean if I used SetDlgItemText it must set the text value of edit control to eax value which is DDCCBEE6

The value of eax is a result of math instructions

Solution

  • You can use wsprintf for that purpose:

    .data
format  db "%X",0

.data?
buffer  db 256 dup (?)

.code
invoke wsprintfA,ADDR buffer,ADDR format,eax

    Note that there are safer alternatives to wsprintf, but I don't know if they can be found in the masm32 include files and import libraries.