Delphi Get the handle of a EXE - delphi

Question

Heres an example of how I'm doing it right now :
var
Client : String;
Handle : Integer;
begin
Client := 'Window Name';
GetWindowThreadProcessId(FindWindow(nil, PAnsiChar(Client)), #ProcessId);
Handle := OpenProcess(PROCESS_ALL_ACCESS, False, ProcessId);
end;
I'd rather grab the Process's handle with its exe name...
Is this possible this?

Answer 1

Since the link provided by vcldeveloper is broken, here's the full function code that works without 3rd party components.
First we will find process id (PID), and then we'll get process handle by opening all access (since the OP mentioned in the comments he will need this for ReadProcessMemory functionality).
If the function for PID returns 0, it means that the process is most likely not running (or just not found in the running process list)
function GetPIDbyProcessName(processName:String):integer;
var
GotProcess: Boolean;
tempHandle: tHandle;
procE: tProcessEntry32;
begin
tempHandle:=CreateToolHelp32SnapShot(TH32CS_SNAPALL, 0);
procE.dwSize:=SizeOf(procE);
GotProcess:=Process32First(tempHandle, procE);
{$B-}
if GotProcess and not SameText(procE.szExeFile, processName) then
repeat GotProcess := Process32Next(tempHandle, procE);
until (not GotProcess) or SameText(procE.szExeFile,processName);
{$B+}
if GotProcess then
result := procE.th32ProcessID
else
result := 0; // process not found in running process list
CloseHandle(tempHandle);
end;
Next, we will get/open Process handle from the PID we got. The whole code/usage is as follows:
var myPID, myProcessHandle: integer;
begin
myPID:=GetPIDbyProcessName('someExeName.exe');
myProcessHandle:=OpenProcess(PROCESS_ALL_ACCESS,False,myPID);
end;
You should store the myProcessHandle in such way that it is accessable for ReadProcessMemory(myProcessHandle...) as first parameter.
Also, add these to your global uses clauses:
Winapi.Windows (for ReadProcessMemory and OpenProcess)
Winapi.tlHelp32(for getting PID tProcessEntry32 variable)

Answer 2

Application.Handle?
Looks like you're trying to program in Delphi by WinAPI. In the vast majority do not need it, VCL provides appropriate object-oriented wrappers.
May be You will find something in this component pack: GLibWMI

Answer 3

You can use ProcessInfo:
var
ProcessInfo : TProcessInfo;
Process : TProcessItem;
PID: Cardinal;
ProcessHandle : THandle;
begin
ProcessInfo := TProcessInfo.Create(nil);
try
Process := ProcessInfo.RunningProcesses.FindByName('Notepad.exe');
if Assigned(Process) then
begin
PID := Process.ProcessID;
ProcessHandle := OpenProcess(PROCESS_ALL_ACCESS,False,PID);
if ProcessHandle > 0 then
try
{Add your code here}
finally
CloseHandle(ProcessHandle);
end;
end;
finally
ProcessInfo.Free;
end;
end;
If you do not like using a third-party component, you can study source code of ProcessInfo to see how it retrieves list of running processes, and their properties. Basically it relays on Windows Tool Help API for most of its features.