use laptop trackpad to draw

[jeeswg]

Is it possible to use a laptop trackpad to draw?

It works with a finger but not with other physical objects. What's so special about a finger? Why doesn't it work with other physical objects.

Thanks for reading.

[LAPIII]

I used a stylus on my trackpad in paint. I just clicked the pencil and using AHK to simulate holding the left mouse button:

Code: Select all

^y::Send % "{Click " . ( GetKeyState("LButton") ? "Up}" : "Down}" )

I was able to draw with my stylus on the trackpad.

[relaxman]

A trackpad requires a change in capacitance to identify the coordinates. Physical objects don't create this and therefore it won't work.