Widgets and their implemented calls
| | focus | attach | set_text | get_text | set_value | get_value | bg_color | fg_color | enable | disable | show | hide |
| Windows | X | | X | X | | | X | | X | X | X | X |
| Normal buttons | X | X | X | X | | | X | X | X | X | X | X |
| Check buttons | X | X | X | X | X | X | X | X | X | X | X | X |
| Radio buttons | X | X | X | X | X | X | X | X | X | X | X | X |
| Text entries | X | X | X | X | | | X | X | X | X | X | X |
| Password entries | X | X | X | X | | | X | X | X | X | X | X |
| Labels | X | X | X | X | | | | X | X | X | X | X |
| Drop lists | X | X | X | X | X | X | X | X | X | X | X | X |
| Text | X | X | X | X | X | X | X | X | X | X | X | X |
| Separator | X | X | | | | | X | | X | X | X | X |
| Frames | X | X | X | X | | | X | X | X | X | X | X |
| Lists | X | X | X | X | X | X | X | X | X | X | X | X |
Generic calls
GTK::event() - get event from GTK
GTK::async() - get asynchronous event from GTK
GTK::version() - retrieve current version of GTK-server module
GTK::logging(x) - enable logging (x=1) or disable logging (x=0)