| SEL_KEYPRESS | Key pressed. | 
| SEL_KEYRELEASE | Key released. | 
| SEL_LEFTBUTTONPRESS | Left mouse button pressed. | 
| SEL_LEFTBUTTONRELEASE | Left mouse button released. | 
| SEL_MIDDLEBUTTONPRESS | Middle mouse button pressed. | 
| SEL_MIDDLEBUTTONRELEASE | Middle mouse button released. | 
| SEL_RIGHTBUTTONPRESS | Right mouse button pressed. | 
| SEL_RIGHTBUTTONRELEASE | Right mouse button released. | 
| SEL_MOTION | Mouse motion. | 
| SEL_ENTER | Mouse entered window. | 
| SEL_LEAVE | Mouse left window. | 
| SEL_FOCUSIN | Focus into window. | 
| SEL_FOCUSOUT | Focus out of window. | 
| SEL_UNGRABBED | Lost the grab (Windows). | 
| SEL_PAINT | Must repaint window. | 
| SEL_CONFIGURE | Resize. | 
| SEL_SELECTION_LOST | Widget lost selection. | 
| SEL_SELECTION_GAINED | Widget gained selection. | 
| SEL_SELECTION_REQUEST | Inquire selection data. | 
| SEL_RAISED | Window to top of stack. | 
| SEL_LOWERED | Window to bottom of stack. | 
| SEL_CLOSE | Close window. | 
| SEL_DELETE | Delete window. | 
| SEL_MINIMIZE | Iconified. | 
| SEL_RESTORE | No longer iconified or maximized. | 
| SEL_MAXIMIZE | Maximized. | 
| SEL_UPDATE | GUI update. | 
| SEL_COMMAND | GUI command. | 
| SEL_CLICKED | Clicked. | 
| SEL_DOUBLECLICKED | Double-clicked. | 
| SEL_TRIPLECLICKED | Triple-clicked. | 
| SEL_MOUSEWHEEL | Mouse wheel. | 
| SEL_CHANGED | GUI has changed. | 
| SEL_VERIFY | Verify change. | 
| SEL_DESELECTED | Deselected. | 
| SEL_SELECTED | Selected. | 
| SEL_INSERTED | Inserted. | 
| SEL_REPLACED | Replaced. | 
| SEL_DELETED | Deleted. | 
| SEL_OPENED | Opened. | 
| SEL_CLOSED | Closed. | 
| SEL_EXPANDED | Expanded. | 
| SEL_COLLAPSED | Collapsed. | 
| SEL_BEGINDRAG | Start a drag. | 
| SEL_ENDDRAG | End a drag. | 
| SEL_DRAGGED | Dragged. | 
| SEL_LASSOED | Lassoed. | 
| SEL_TIMEOUT | Timeout occurred. | 
| SEL_SIGNAL | Signal received. | 
| SEL_CLIPBOARD_LOST | Widget lost clipboard. | 
| SEL_CLIPBOARD_GAINED | Widget gained clipboard. | 
| SEL_CLIPBOARD_REQUEST | Inquire clipboard data. | 
| SEL_CHORE | Background chore. | 
| SEL_FOCUS_SELF | Focus on widget itself. | 
| SEL_FOCUS_RIGHT | Focus movements. | 
| SEL_DND_ENTER | Drag action entering potential drop target. | 
| SEL_DND_LEAVE | Drag action leaving potential drop target. | 
| SEL_DND_DROP | Drop on drop target. | 
| SEL_DND_MOTION | Drag position changed over potential drop target. | 
| SEL_DND_REQUEST | Inquire drag and drop data. | 
| SEL_IO_READ | Read activity on a pipe. | 
| SEL_IO_WRITE | Write activity on a pipe. | 
| SEL_IO_EXCEPT | Except activity on a pipe. | 
| SEL_PICKED | Picked some location. | 
| SEL_LAST | Last message. |