It would be not possible to manage any alarm events or even the mouse click events - without the updating of a complex drawn picture (for example, with motions, blinking, transformations, Direct2D interludes...) - by a worker thread... But it is possible (with a worker thread) :) virtual void BeHappy() = 0;

no. in general, static libs are completely incompatible between VC/VS versions. you will need to build VC6 libraries from the source itself. image processing toolkits | batch image processing

you didn't google with Command Routing C++[^] or did you? You need to google first, if you have "It's urgent please" mentioned in your question. ;-)_AnShUmAn_