Problem using OCX

Question

Hi.
I'm using Oracle 10g , forms 6i, and I need capture picture through webcam.
If does anyone have one example , will be nice.
I found one exemple but doesn't work.
the code...
declare
numero number;
height number;
width number;
begin
-- COMMIT_FORM;
-- set_block_property('pessoas', default_where, 'id_pessoa ='||:pessoas.id_pessoa);
-- go_block('pessoas');
-- execute_query;
if get_item_property('controle.oc_img',visible) = 'FALSE' then
set_item_property('controle.oc_img',visible,property_true);
go_block('controle');
:parameter.p_camera :=:item('controle.oc_img').interface;
numero := videocap_dvideocap.ole_Start(:parameter.p_camera);
end if;
if get_item_property('pessoas.foto_camera',visible) = 'TRUE' then
set_item_property('pessoas.foto_camera',visible,property_false);
end if;
end;
but I have the error bad bind variable 'item('controle.oc_img').interface'
I´m using videocapdemosetup.exe..
thanks...

Answer 1

Hello,
An ActiveX control must be run in an STA apartment. Because the attribute [STAThread] is applied to the Main method of a WinForm class by default with a WinForms Project, the main thread of your app will run in STA mode. This is why your test no.1 works. However, if you want to use the ActiveX Controls in a programatically created thread, you need to set the thread to STA mode manually before you starting the thread: 
o = New Thread(othr)
o.ApartmentState = System.Threading.ApartmentState.STA
o.Start()
Hope it helps,
Guangwei