How to open a scanner from Forms

HI,
Can any one tell me how can I open a scanner from the click of a button . I know u can use the HOST command to call an exe file . But its not working . Please let me know if any one has an Idea .
Thanks in advance.

hi
use OCX control if u are using Forms6i
then call some packages
1) AdminLib_CONSTANTS
2) ImgeditLib_CONSTANTS
3) Wang_Scan
4) Wang_Admin
5) Wang_Edit
6) Wang_Scan_Events
then call from button
declare
my_ole OLEOBJ;
dummy number;
begin
forms_ole.activate_server('scan');
my_ole := forms_ole.get_interface_pointer('SCAN');
if Wang_Scan.ScannerAvailable(my_ole) <> 0 then
dummy := Wang_Scan.StartScan(my_ole);
else
message('no scanner found !');
message('no scanner found !');
end if;
end;
Rizwzn

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