I have tried different softwares for drawing using my touchscreen (e.g. Gimp or Krita). However, when I touch and drag (to draw a line) what happens is that only the mouse pointer moves from one place to the other, but as I was not "clicking" to draw.
I also cannot use some gestures such as zooming a picture.
I have installed Touchegg, but I'm not sure how to use it and if it can help me solve this problem.