| CUI_Button | Any sort of button in the UI |
| CUI_ComboBox | A combo box |
| CUI_Console | A console |
| CUI_ConsoleFun | Cfun - internal class - not exported to DLL |
| CUI_ConsoleVar | Cvar - internal class - not exported to DLL |
| CUI_Control | A higher-level frame |
| CUI_CoordSys | Coordinate system for frames |
| CUI_DraggableFrame | A frame that can be dragged around inside its parent's area |
| CUI_DraggableViewFrame | A frame that has a draggable window space |
| CUI_EditableTextBox | An editable text box |
| CUI_ErrorHandler | The GUI error handler |
| CUI_FixedBMFont | Implementation of IUI_FONT |
| CUI_Frame | The base class for UI elements |
| CUI_ListBox | A list box - high level control |
| CUI_ListItem | A simple class for keeping track of properties of items in a list |
| CUI_Menu | A menu or submenu |
| CUI_MenuItem | A simple class for keeping track of items in a menu |
| CUI_MessageBox | A Message Box |
| CUI_MultipleStateButton | A button with one or more states |
| CUI_PolyEdgeBorder | Simple implementation of IUI_Border |
| CUI_ProgressBar | A general purpose progress bar |
| CUI_RadioGroup | A radio button group |
| CUI_RadioItem | A simple class for keeping track of properties of items in a radio group |
| CUI_Registry | Resource registry |
| CUI_ResizeButton | A button that can be dragged to resize its parent frame |
| CUI_Resource | A base font interface |
| CUI_SAXElement | Information about An xml element stored in a stack in the SAXLoader |
| CUI_SAXLoader | SAX parser handler for loading xml gui files |
| CUI_ScrollableFrame | A Scrollable Frame control |
| CUI_ScrollableTextBox | A Scrollable Textbox control |
| CUI_SimpleShader | A general purpose surface shader |
| CUI_SliderBar | A general purpose slider bar |
| CUI_TextBox | A simple widget filled with text |
| CUI_TextField | A text field |
| CUI_UI | Interface to the entire UI |
| CUI_VarBMFont | Implementation of IUI_FONT |
| CUI_Widget | The basic element of the UI controls |
| IUI_Border | Interface for a frame border |
| IUI_Font | A base font interface |
| IUI_Renderer | Interface for rendering the UI |
| IUI_Shader | Interface for shaders |
1.3.4