Container controls

Two controls in Koda realization are container controls - Tab and Group. This meaning that any other control placed onto them will have it as parent. This result into some features:

• subcontrols will move together with container control;
• position of subcontrols is relative to container control;
• if you want to place controls that was created outside container control onto container control, you have to copy/cut those controls and paste them onto container control, drag'n'drop will not work in this case;