Spent three hours for getting the mouse hook of Stile work as it should. Removed hacky goto to mouse moving event and replaced with initial call to drawing routine, now separate from mouse hook. Damn it was hard. It's all mess of different types of mouse coordinates, but even here the data-driven shit helped a lot. The routine still has couple of annoying bugs, like jumpy mouse cursor when limiting to an area. In HSV selector I solved that by using a shadow mouse cursor, maybe I'll use that in hook also. I could possibly now merge the HSV selector to the mouse hook.