asked on

DestroyWindow and API calls

I am trying to create a small program that blocks the windows NT messages
that people can send(the net send command is used as a bombing tool at our
school as well). As a first step i intend to block all messages but further
implement the ability to block individual computers.
Here's the present catch... When a 'Messenger Service' window pops up it
isn't a process. hence, i can't use the TerminateProcess command...i have
used the closewindow call, but this only minimizes the window, not closes
it all together. I have tried the 'destroywindow' command but it doesn't
appear to work. I tried 'destroywindow' on a normal window as well that
does have a PID yet it still didn't work.
So, what command do i call to close a window completely that doesn't have a
PID?

Also, if possible, what command do i call to search inside this window for
a ceratin piece of text (ie. a computer name) so i can block the message?

Igor UL7AAjr

listening....

frangers99

ASKER

Adjusted points to 150

frangers99

ASKER

Do you know how i do it? it's just really tricky because windows NT messenger service is not a process so it's hard to close entirely (although, close window works)

frangers99

ASKER

Do you know how i do it? it's just really tricky because windows NT messenger service is not a process so it's hard to close entirely (although, close window works)

brunohe

Why don't you deny access do Windows/system32 directory? It shouldn't be a problem 'cause you're using NT.

This would be much easier.

frangers99

ASKER

Adjusted points to 170

frangers99

ASKER

It would make sense, but i am doing it more a a tool for students who are getting bombed or wish to choose who NOT to get messages from, the reason i need to get a function like DestroyWindow working is so then a user can type in a computer name to block and since that when a user sends a message their computer name appears on the message, it should be easily blockable.

At present when i use destroy window it doesn't work and i get error 216.

craig_capel

//destroywindow
//sendmessage(form1.handle,wm_destroy,0,0);
sendmessage(form1.handle,wm_close,0,0);

Intresting.... I invoked destroy window like this, and watch the icon in the top left corner as you
use wm_destroy....

You can use Sendmessage to close the window or you can do this....

var
wnd2 : hwnd;
ProcessID,cpid : Cardinal;
begin
wnd2:=findwindow('Shell_TrayWnd',nil); //handle of window

ProcessID := GetWindowThreadProcessID(wnd2,@cpid);
TerminateProcess(OpenProcess(PROCESS_TERMINATE,false,cpid),1);
end;

there ya go :)

craig_capel

right, ignore that..... :)

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craig_capel

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frangers99

ASKER

thanks once again, when i finish the program i'll send it to you if you want, just write back.

craig_capel