Ok, i'm writing a DLL that gets loaded by a process. Before the process is loaded, the DLL checks a particular register value, and performs a subsequent action.
Im having zero troubles writing to this value, but as soon as I attempt to read it, I get an error "This program has failed to initialize properley (0xc0000005). Press END to terminate this process".
The code... any ideas, cheers.
DllEntry proc hInstDll:HINSTANCE, reason:DWORD, reserved1:DWORD
.IF reason == DLL_PROCESS_ATTACH
invoke ForceFullScreen
.ENDIF
mov eax, 1
ret
DllEntry endp
ForceFullscreen PROC
.data
szInit db "Initializing...", 0
szForceFullscreen db "Forcing FullScreen Mode", 0
szTrue db "TRUE", 0
szFalse db "FALSE", 0
szKeyName db "Software\Red Storm Entertainment\Rogue Spear", 0
szFullScreen db "FullScreen", 0
szFullScreenBuf db 10 dup(0)
dwSize dd 0
.code
Invoke GetRegKeySZ, ADDR szKeyName, ADDR szFullScreen, ADDR szFullScreenBuf
Invoke MessageBox, 0, ADDR szFullScreenBuf, ADDR szFullScreenBuf, MB_OK
; Invoke lstrcmp, ADDR szTemp, ADDR szTrue
; cmp eax, 0
; jne @F
; ret
@@:
Invoke MsgBoxTimeout, 0, ADDR szForceFullscreen, ADDR szInit, MB_OK, 2000
Invoke SetRegKeySZ, ADDR szTrue, ADDR szKeyName, ADDR szFullScreen, SIZEOF szFullScreen
ret
ForceFullscreen EndP
GetRegKeySZ proc lpszKey:DWORD,lpszValueName:DWORD,lpszBuffer:DWORD
LOCAL dwStrLength:DWORD
LOCAL phkResult :DWORD
LOCAL RType:DWORD
LOCAL lpcbData :DWORD
mov eax,REG_SZ
mov RType,eax
invoke RegCreateKeyEx,HKEY_LOCAL_MACHINE,
lpszKey,NULL,NULL,
REG_OPTION_NON_VOLATILE,
KEY_ALL_ACCESS,
NULL,ADDR phkResult,ADDR RType
.if eax==ERROR_SUCCESS
mov eax,REG_DWORD
mov RType,eax
invoke RegQueryValueEx,phkResult,lpszValueName,
NULL,ADDR RType, lpszBuffer,
lpcbData
invoke RegCloseKey,phkResult
.endif
ret
GetRegKeySZ endp
invoke RegQueryValueEx,phkResult,lpszValueName,
NULL,ADDR RType, lpszBuffer,
ADDR lpcbData