With todays variety of devices KDE runs on, it is getting harder to support them equally well in applications. With display resolutions getting higher, touchscreen interfaces demand bigger controls to keep them accessible. You can often get these by just increasing the font size. Some widgets, however, do not scale well (such as scroll bars), and this is where Qt’s “global strut” feature comes in.
To try this, run the “qtconfig” application, and change the minimum width/height values on the “Interface” page. Now applications should respect these sizes for clickable controls.
For Skulpture 0.2 the layouting code has been much improved. Not only does it support configuring the size of (and spacing between) elements, but also fully supports the global strut feature. As a special bonus, Skulpture makes sure even spin up/down controls stay accessible in spin boxes by placing them next to instead of above each other. You might also appreciate this feature, if you are just a mouse or pen user.