Par2: How to detect if an exe is running 2011-08-26 -- Jens Matschke MODULE('Windows.DLL')
CreateToolhelp32Snapshot(ULONG,ULONG),UNSIGNED,PASCAL,RAW
Process32First(UNSIGNED,UNSIGNED),BOOL,PASCAL,RAW
Process32Next(UNSIGNED,UNSIGNED),BOOL,PASCAL,RAW
CloseHandle(UNSIGNED),BOOL,PASCAL,RAW
END
I've created a small source procedure to check if a process is running.
Simply call: isrunning#=IsProcessRunning('someprocess.exe')
This is the code for it:
IsProcessRunning PROCEDURE (PProcess) !PProcess parameter of type STRING
RVal BYTE
locProcessName &CSTRING
hProcessSnap UNSIGNED
pe32 GROUP,PRE()
dwSize ULONG
cntUsage ULONG
th32ProcessID ULONG
th32DefaultHeapID ULONG
th32ModuleID ULONG
cntThreads ULONG
th32ParentProcessID ULONG
pcPriClassBase LONG
dwFlags ULONG
szExeFile CSTRING(260)
END
TH32CS_SNAPPROCESS EQUATE(02H)
CODE
RVal=False
locProcessName &= NEW(CSTRING(LEN(CLIP(PProcess))+1))
locProcessName=UPPER(CLIP(PProcess))
hProcessSnap=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0)
IF hProcessSnap=-1 !INVALID_HANDLE_VALUE
!MESSAGE('Failed to create process snapshot','Error!')
ELSE
pe32.dwsize=SIZE(pe32)
!Count the number of running processes
IF Process32First(hProcessSnap,ADDRESS(pe32))
IF UPPER(pe32.szExeFile)=locProcessName
RVal+=1
.
LOOP
pe32.dwsize=SIZE(pe32)
IF Process32Next(hProcessSnap,ADDRESS(pe32))
IF UPPER(pe32.szExeFile)=locProcessName
RVal+=1
.
ELSE
BREAK
.
.
.
!IF RVal=1 !process is running (1 instance)
!
!ELSIF RVal>=2 !process is running (more than 1 instance -> "RVal" instances)
!
!ELSIF RVal=0 !process is not running
!
!.
IF CloseHandle(hProcessSnap)=0
!MESSAGE('Error ' & shd_GetLastError() & ' closing process snapshot
handle','Error!')
.
.
DISPOSE(locProcessName)
RETURN RVal
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