用MASM32编程获取并显示WinRAR的路径

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; 文件名: rar_path.asm

; 功　能: 获取并显示WinRAR的路径

; 作　者: Purple Endurer

; 环　境: win 2K pro + masm32 V8


; log

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

; 2006.03.24 创建

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.386

.model 
flat, 
stdcall

option 
casemap:
none

include /masm32/
include/windows.inc


include /masm32/
include/Advapi32.inc

include /masm32/
include/kernel32.inc

include /masm32/
include/user32.inc


includelib /masm32/
lib/Advapi32.lib

includelib /masm32/
lib/kernel32.lib

includelib /masm32/
lib/user32.lib



GetRarPath 
PROTO :LPSTR, :
DWORD


m_m2m 
MACRO d1, d2

    
push d2

    
pop d1

ENDM



.data

g_szTitle       
db 
"WinRAR路径", 0

g_szRegPath 
db  
"SOFTWARE/Microsoft/Windows/CurrentVersion/App Paths/WinRAR.exe", 0

g_szFailRegOpenKeyEx  
db 
"RegOpenKeyEx失败!", 0

g_szFailRegQueryValueEx 
db 
"RegQueryValueEx失败!", 0

g_szPath 
db 
"Path", 0


.data?

g_szRarPath  
db 256 dup(?)

g_hRegKey4RAR   HKEY    ?


.code

start:

        
invoke GetRarPath, 
ADDR g_szRarPath, SIZEOF g_szRarPath

        
.if 
eax==1

            
mov 
eax, 
OFFSET g_szFailRegOpenKeyEx

        
.elseif 
eax==2

            
mov 
eax, 
OFFSET g_szFailRegQueryValueEx

        
.else

            
mov 
eax, 
OFFSET g_szRarPath

        
.endif

        
invoke MessageBox, NULL, 
eax, 
OFFSET g_szTitle, MB_OK


        
invoke ExitProcess,NULL


GetRarPath 
PROC lpszRarPath: LPSTR,dwBufLen: 
DWORD

    
LOCAL dwcbData: 
dword

 
;         LONG RegOpenKey(

 
;             HKEY hKey,    // handle of open key 

 
;             LPCTSTR lpSubKey,    // address of name of subkey to open 

 
;             PHKEY phkResult     // address of handle of open key 

 
;         );


    
invoke  RegOpenKey, HKEY_LOCAL_MACHINE, 
ADDR g_szRegPath, 
ADDR g_hRegKey4RAR

    
.if 
eax!=ERROR_SUCCESS

        m_m2m 
eax, 1

        
ret

    
.endif


 
;     LONG RegQueryValueEx(

 
;         HKEY hKey,          // 1.handle of key to query 

 
;         LPTSTR lpValueName, // 2.address of name of value to query 

 
;         LPDWORD lpReserved, // 3.reserved 

 
;         LPDWORD lpType,     // 4.address of buffer for value type 

 
;         LPBYTE lpData,      // 5.address of data buffer 

 
;         LPDWORD lpcbData    // 6.address of data buffer size 

 
;     );


    m_m2m dwcbData, dwBufLen

    
invoke RegQueryValueEx, g_hRegKey4RAR, 
ADDR g_szPath, NULL, NULL, lpszRarPath, 
ADDR dwcbData


    
.if 
eax!=ERROR_SUCCESS

        m_m2m 
eax, 2

    
.else

        
xor 
eax, 
eax

    
.endif


 
; LONG RegCloseKey(

 
;     HKEY hKey     // handle of key to close  

 
; );

    
invoke RegCloseKey, g_hRegKey4RAR


    
ret

GetRarPath 
ENDP


end