REG_BINARY structure...

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semiono

Joined: 31 Aug 2007
Posts: 198
Location: section '.code' executable

semiono 27 Aug 2010, 20:24

This is 4 bytes per blocks: [unknown][x][y][width][height]

I need very help to regwrite binary type value. Before I known reg_sz and dword only "

And I could have problem to conversion data like CXSCREEN... to valid datas

Task is here:

Code:

        HKCU = HKEY_CURRENT_USER
        REGN = REG_OPTION_NON_VOLATILE

        invoke GetSystemMetrics,SM_CXSCREEN
        invoke wsprintf,@x,'%d',eax

        invoke GetSystemMetrics,SM_CYSCREEN
        sub eax,52 ; ommit taskbar size
        invoke wsprintf,@y,'%d',eax

        invoke RegCreateKeyEx,HKCU,'Software\Steinberg\Cubase SX',\
               NULL,NULL,REGN,KEY_WRITE,NULL,phkResult,NULL
        invoke RegSetValueEx,[phkResult],'Framewindow',NULL,REG_BINARY,????,???
        invoke RegCloseKey,[phkResult]

I very need it Embarassed

_________________
Windows 9, FL Studio 19

Last edited by semiono on 27 Aug 2010, 20:41; edited 3 times in total

27 Aug 2010, 20:24

MHajduk

Joined: 30 Mar 2006
Posts: 6115
Location: Poland

MHajduk 27 Aug 2010, 20:34

Try something like this:

Code:

         invoke  RegSetValueEx, [phkResult], RegValName, 0, REG_BINARY, <Address of data buffer>, <Length of the data>
           test    eax, eax
            jnz     .failed
             
            (...)
               
            RegValName db 'Framewindow', 0

27 Aug 2010, 20:34

semiono

Joined: 31 Aug 2007
Posts: 198
Location: section '.code' executable

semiono 27 Aug 2010, 20:38

Is this valid the part of buffer format — invoke wsprintf,@x,'%d',eax ?
OK! I try it.

27 Aug 2010, 20:38

semiono

Joined: 31 Aug 2007
Posts: 198
Location: section '.code' executable

semiono 28 Aug 2010, 10:45

Code:

        invoke GetSystemMetrics,SM_CXSCREEN
        ;invoke wsprintf,zzzz,'%u',eax
        invoke wsprintf,zzzz,'%x',eax
...
        invoke RegSetValueEx,[phkResult],'Framewindow',NULL,REG_BINARY,zzzz,4

reg [34383000] 480h
reg [31313500] 1152
This should be little endian direction... Confused

http://msdn.microsoft.com/en-us/library/ms724884(v=VS.85).aspx
"REG_BINARY | Binary data in any form."
nothing about :\

How possible to format the buffer? Embarassed

--
invoke RegSetValueEx,[phkResult],'Framewindow',NULL,REG_BINARY,eax,4
Razz

28 Aug 2010, 10:45

MHajduk

Joined: 30 Mar 2006
Posts: 6115
Location: Poland

MHajduk 28 Aug 2010, 10:53

semiono wrote:

This should be little endian direction... (...)
How possible to format the buffer?

If you want to change endianness of your data you can use 'bswap' instruction. Try this code and observe (in a some debugger) how the eax content is changing:

Code:

mov     eax, 0x01020304
bswap        eax

28 Aug 2010, 10:53

semiono

Joined: 31 Aug 2007
Posts: 198
Location: section '.code' executable

semiono 28 Aug 2010, 20:41

I've do it! Yes!

Code:

section '.code' executable
start:
        xor eax,eax
        mov eax,18h
        mov [i],eax ; task bar size top
        invoke GetSystemMetrics,SM_CXSCREEN
        mov [x],eax
        invoke GetSystemMetrics,SM_CYSCREEN
        sub eax,52 ; ommit task bar size + bottom some size cosmetic
        mov [y],eax

        invoke RegCreateKeyEx,HKCU,'Software\Software\Steinberg\Cubase SX',NULL,NULL,REGN,KEY_WRITE,NULL,phkResult,NULL
        invoke RegSetValueEx,[phkResult],'Framewindow',NULL,REG_BINARY,!,20
        invoke RegCloseKey,[phkResult]
exit:
        invoke ExitProcess,NULL

section '.data' readable writable
        HKCU = HKEY_CURRENT_USER
        REGN = REG_OPTION_NON_VOLATILE
        ! dq NULL
        i dd ?
        x dd ?
        y dd ?
        phkResult dd ?

in registry 00 00 00 00 00 00 00 00 18 00 00 00 80 04 00 00 2c 03 00 00 (1152x812)

Please, examine me if code could has been hidden errors posible or code is not clean?

-------------------->8--
Big thanks, MHajduk! to following post >
"mov dword [i]" ))) i'm lame!

Last edited by semiono on 29 Aug 2010, 10:25; edited 8 times in total

28 Aug 2010, 20:41

MHajduk

Joined: 30 Mar 2006
Posts: 6115
Location: Poland

MHajduk 28 Aug 2010, 21:39

semiono, checking return code (stored in the eax register) of the WinAPI functions is a good programming practice. Wink

I've made some minor corrections of your code Wink

Code:

format PE console

include 'win32ax.inc'

section '.code' code executable
 
start: 
        mov     dword [i], 18h ; task bar size top
 
        invoke       GetSystemMetrics, SM_CXSCREEN 
        test  eax, eax
        jz  failed
        
        mov       [x], eax
 
        invoke GetSystemMetrics, SM_CYSCREEN
       test    eax, eax
        jz  failed
 
        sub      eax, 52 ; omit task bar size + some cosmetic of the bottom size 
        mov [y], eax 

        invoke RegCreateKeyEx, HKCU, 'Software\Software\Steinberg\Cubase SX', NULL, NULL, REGN, KEY_WRITE,NULL, phkResult, NULL
        test   eax, eax
        jnz failed
        
        invoke    RegSetValueEx, [phkResult], 'Framewindow', NULL, REG_BINARY, !, 20
        test    eax, eax
        jnz failed
      
        invoke      RegCloseKey, [phkResult]
        test        eax, eax
        jnz failed
      
    jmp     exit
        
failed:
     stdcall ShowLastError, HWND_DESKTOP
  
exit: 
        invoke       ExitProcess, NULL 

; This procedure shows error messages in a human-readable form. 
;
proc   ShowLastError, hwnd

     locals
              Buffer dd ?
 endl

    push    ebx

     invoke  GetLastError

    lea     ebx, [Buffer]
       invoke  FormatMessage, FORMAT_MESSAGE_ALLOCATE_BUFFER + FORMAT_MESSAGE_FROM_SYSTEM, 0, eax, LANG_NEUTRAL, ebx, 0, 0
 invoke  MessageBox, [hwnd], [Buffer], NULL, MB_ICONERROR + MB_OK
            
    invoke  LocalFree, [Buffer]

     pop     ebx

     ret
endp


section '.data' data readable writable
 
        HKCU = HKEY_CURRENT_USER 
        REGN = REG_OPTION_NON_VOLATILE
        
        ! dq NULL 
        i dd ? 
        x dd ? 
        y dd ?
        
        phkResult dd ? 

.end start

28 Aug 2010, 21:39

semiono

Joined: 31 Aug 2007
Posts: 198
Location: section '.code' executable

semiono 01 Sep 2010, 21:13

My first macro!

Code:

        macro rc r1,r2,r3,r4 {invoke RegSetValueEx,[phkResult],r1,NULL,r2,r3,r4}

        rc 'Code',REG_SZ,'59F0D04B31ADF0026C08E6041FD477284DA2910FDC11CDEB',48
        rc 'Current',REG_SZ,'Semiono',7
        rc 'Name',REG_DWORD,@00000001,4 ; @00000001 dd 0x00000001

)))

01 Sep 2010, 21:13

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