VB COM, VB Com and Threading issues

VB Com and Threading issues

Author	Message
Bill #1 / 3	VB Com and Threading issues I have been writing VB Com objects for almost a year now and came across an interesting problem. It has come to my attention that even though my VB Com object spins off mutliple threads that in fact it is really not true multithreading and that all requests still come through a single channel. Is this true? Is this based upon a class? In otherwords if I have multiple functions within a single class are all the finstions within this class limited by this single channel? If so is it smarter to create smaller classes? I am looking for a solution to extend this alleged single channel affect. In C++ I am told you need to implmement special coding to atually achieve true independent channels of threading. I hope I do not so more confused than I actual am. I am trying to gain more insight to VB threading and its limiting factors. Thanks
Wed, 03 Jul 2002 03:00:00 GMT

Josef Vette #2 / 3	VB Com and Threading issues Hello, VB uses only one Mainthread. Within this Apartment there are running all items. You can't ( and you should not using API) create a second thread with vb. Best Regards Josef Vetter Quote: > I have been writing VB Com objects for almost a year now and came across an > interesting problem. It has come to my attention that even though my VB Com > object spins off mutliple threads that in fact it is really not true > multithreading and that all requests still come through a single channel. Is > this true? Is this based upon a class? In otherwords if I have multiple > functions within a single class are all the finstions within this class > limited by this single channel? If so is it smarter to create smaller > classes? I am looking for a solution to extend this alleged single channel > affect. In C++ I am told you need to implmement special coding to atually > achieve true independent channels of threading. I hope I do not so more > confused than I actual am. I am trying to gain more insight to VB threading > and its limiting factors. > Thanks
Fri, 05 Jul 2002 03:00:00 GMT

Russell Davi #3 / 3	VB Com and Threading issues Quote: > VB uses only one Mainthread. Within this Apartment there are running all > items. > You can't ( and you should not using API) create a second thread with vb. Actually, you can, but it's a tricky process and you have to be very careful lest you crash VB. See the June '99 issue of VBPJ (www.vbpj.com) for a great article that describes exactly what you need to do. Regards, Russell Davis MS VB MVP
Fri, 05 Jul 2002 03:00:00 GMT

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