Child windows in QCanvas as a canvas item

[wysota]

Ok, let's see...

I know how to draw basic rects but I dont know how to draw a rect with a list of labels

Draw the rectangle and then the labels inside. QSimpleRichText may help you here.

in and how I can detect which one is under the mouse,

Label or rectangle?
If the label, then it'll be quite hard if you use QSimpleRichText, so you'd have to do the layout management yourself and store all coordinates of labels. If the rectangle then that's easy, use QCanvas::collisions().

or how to include checkboxes in a qcanvasitem.

Make a custom item and use QStyle::drawControl() with CE_CheckBox as a parameter to draw the checkbox. You'll have to do the clicking stuff yourself by checking the coordinates (that's how QCheckBox does that so you can probably take some ideas from its sources).

Also, I dont like to work with coordinates,

You won't get away from that here.

I was wondering if some sortof layoutmanagement can be used inside a qcanvas

Yes, but... you have to implement it yourself