Jigging with SHIFT, CTRL and Mouse Wheel Functionality (AutoCAD .net API)

Any AutoCAD programmer knows that things which an algorithm may take a million years and infinite computational power to do can sometimes be easily done by a human being instantly. In the same way it is sometimes much easier to give a human being the ability to choose: then you can get an optimum result without complex algorithms.

This post is a code snipped of how you can utilise the CTRL + SHIFT + Mouse Wheel (up/down) mechanisms in order to produce different desired results when operating a custom jig.

Here is the code:

So when the appropriate user input happens, then the jig can respond accordingly. Yes it’s true – the OOP purists will say: “you’re passing a concrete type in there” – I can always change it later if I want.