Hola a todos, Process32Next siempre me retorna 0, ¿A qué se debe?:
.386
option casemap:none
.model flat,stdcall
include c:\masm32\include\windows.inc
include c:\masm32\include\kernel32.inc
include c:\masm32\include\user32.inc
includelib c:\masm32\lib\kernel32.lib
includelib c:\masm32\lib\user32.lib
DlgProc PROTO,
hWnd:HWND,
uMsg:UINT,
wParam:WPARAM,
lParam:LPARAM
.const
.data
DlgName byte "IDD_DLG1",0
processName byte "calc.exe",0
.data?
hInstance HINSTANCE ?
CommandLine LPSTR ?
hThread HANDLE ?
processInf PROCESSENTRY32 <>
.code
FindProcess PROC
LOCAL hSnapshot:HANDLE
invoke CreateToolhelp32Snapshot,TH32CS_SNAPPROCESS,0
mov hSnapshot,eax
invoke Process32First,hSnapshot,addr processInf
invoke Process32Next,hSnapshot,addr processInf
invoke GetLastError
ret
FindProcess ENDP
start:
invoke GetModuleHandle,NULL
mov hInstance,eax
invoke GetCommandLine
mov CommandLine,eax
invoke DialogBoxParam,hInstance,ADDR DlgName,NULL,ADDR DlgProc,NULL
invoke ExitProcess,eax
DlgProc PROC hWnd:HWND,uMsg:UINT,wParam:WPARAM,lParam:LPARAM
.IF uMsg == WM_INITDIALOG
mov processInf.dwSize,sizeof PROCESSENTRY32
invoke CreateThread,NULL,0,ADDR FindProcess,NULL,0,0
mov hThread,eax
push eax
.ELSEIF uMsg == WM_CLOSE
invoke EndDialog,hWnd,NULL
.ELSE
mov eax,FALSE
ret
.ENDIF
mov eax,TRUE
ret
DlgProc ENDP
END start
Process32First function (http://msdn.microsoft.com/en-us/library/windows/desktop/ms684834(v=vs.85).aspx) retorna el mismo error:
Remarks
The calling application must set the dwSize member of PROCESSENTRY32 to the size, in bytes, of the structure.
En la línea 50 lo he puesto:
mov processInf.dwSize,sizeof PROCESSENTRY32
¿Será esta línea la causante?, saludos.
Al contrario, como no tengo el dialogo llamaba directamente a FindProcess, ahora poniendola antes de Process32* funciona. Depura el codigo con WinDbg.