Quote Originally Posted by tuli View Post
Note how the column in the textbox are nicely aligned <address><hex numbers><instruction text>. How can i have formatted text columns like that?
Fixed width font and tabulations or HTML.

a control graph. We are using graphs in our toool, too, using QgraphicsScene + graphvic, etc. However, the connections are not as .... elegant as here. Does anyone know what the author used?
Hard to say, it can be anything ranging from a custom widget, QGraphicsView to a custom graphing library.

here you can see advanced hover-over, where another portion of the textbox content is shown when hovering over a link of some sort in the tooltip:
-how to create such a link and how to show the hover-over like that?
It's probably a regular tooltip containing HTML shown using QToolTip::showText() from within tooltip event handler.

And the most important question: see the cross-reference lines on the left side of the textbox? Pretty amazing, how can i visualize connection between single rows like that!?
It's probably a custom widget placed on the left of the viewport of the text edit.