how can I get Hwnd FROM PID?

[yesterdayze]

I need to be able to retrieve the Handle of a window, not the handle of the thread (IE not what OpenProcess(PROCESS_QUERY_INFORMATION Or PROCESS_VM_READ, 0, ProcessID) would return) in a Visual Basic 6 program.


Any ideas on doing this? I am not adverse to a loop, but would prefer a better way. If not though could you help with a loop, I tried but cannot seem to retrieve any of the windows below the desktop. Thanks

 

[palbano]

In the User Interface section of the Windows Platform SDK you will find the function GetWindowThreadProcessId

hope that helps
-pete

 

[sandiro]

Maybe first you start by identify your target process, then
Enumerate the windows from the system and check one by one using GetWindowThreadProcessId(current_hwnd, ) if is the one you need (i.e. has same process id )

or use EnumThreadWindows and obtain all windows on target process....

e.g a sample pseudocode (sorry 'cause it looks like C ):

for each current_hwnd in sistem //here use EnumWindows
{
DWORD dwCrt_id;
GetWindowThreadProcessId(current_hwnd, &dwCrt_id);
if(dwCrt_id == my_targetid)
{
...
dosomething (current_hwnd);
...
}

}