| Fl | Fl |
| Fl_Align_Group | Fl_Align_Group |
| Fl_Bar | Fl_Bar |
| Fl_Base64 | Fl_Base64 class is responsible for base64 encoding/decoding it works with Fl_Buffer, Fl_String and/or Fl_String_List objects |
| Fl_Bitmap | Fl_Bitmap |
| Fl_Box | This widget is the same as an plain Fl_Widget except if the box is set to FL_NO_BOX it is completely invisible and attemps to draw it do absolutely nothing |
| Fl_Boxtype_ | Fl_Boxtype_ |
| Fl_Browser | Fl_Browser |
| Fl_Buffer | Fl_Buffer is core buffer class in eFLTK |
| Fl_Button | Buttons generate callbacks when they are clicked by the user |
| Fl_Button_Group | Fl_Button_Group |
| Fl_Calendar | Fl_Calendar |
| Fl_Callback_List | Fl_Callback_List |
| Fl_Check_Button | Buttons generate callbacks when they are clicked by the user |
| Fl_Check_Buttons | Fl_Check_Buttons |
| Fl_Choice | This is a button that when pushed pops up a menu (or hierarchy of menus) defined by an array of child items |
| Fl_Clock | Fl_Clock displays the current time always by using a timeout |
| Fl_Clock_Output | Fl_Clock_Output can be used to display a program-supplied time |
| Fl_Color_Chooser | Fl_Color_Chooser |
| Fl_Colormap | Fl_Colormap |
| Fl_Colormap_Color | Fl_Colormap_Color |
| Fl_Config | The configuration holder |
| Fl_Config_Dialog_DS | Fl_Config_Dialog_DS is designed to support a configuration dialogs which store the widgets' data into config files |
| Fl_Config_Section | The configuration section |
| Fl_Data_Dialog | Fl_Data_Dialog class designed to easy insert the new or edit the existing record in the database table |
| Fl_Data_Field | Fl_Data_Field |
| Fl_Data_Fields | Fl_Data_Fields |
| Fl_Data_Source | Fl_Data_Source |
| Fl_Date_Input | Fl_Date_Input |
| Fl_Date_Time | Fl_Date_Time |
| Fl_Device | Fl_Device |
| Fl_Dial | Fl_Dial |
| Fl_Dialog | The Fl_Dialog is standard dialog window for eFLTK |
| Fl_Dialog_DS | Fl_Dialog_DS - the special DataSource for Fl_Dialog |
| Fl_Directory_DS | Fl_Directory_DS |
| Fl_Divider | Fl_Divider |
| Fl_Double_Window | Fl_Double_Window |
| Fl_Drawable | Fl_Drawable |
| Fl_Exception | General exception class for EFltk |
| Fl_File_Browser | Fl_File_Browser |
| Fl_File_Chooser | Fl_File_Chooser |
| Fl_FileInput | Fl_FileInput |
| Fl_Flags | Fl_Flags |
| Fl_Float_Input | Fl_Float_Input |
| Fl_Font_ | The Fl_Font_ struct |
| Fl_Help_Dialog | Fl_Help_Dialog |
| Fl_Highlight_Button | Fl_Highlight_Button |
| Fl_Hor_Fill_Slider | Fl_Hor_Fill_Slider |
| Fl_Hor_Nice_Slider | Fl_Hor_Nice_Slider |
| Fl_Hor_Slider | Fl_Hor_Slider |
| Fl_Hor_Value_Slider | Fl_Hor_Value_Slider |
| Fl_Image | IMAGE |
| Fl_Image_Cache | Fl_Image_Cache |
| Fl_Image_Filter | Base Image_Filter class |
| Fl_Image_IO_Struct | Fl_Image IO struct |
| Fl_Image_List | Fl_Image_List |
| Fl_Input | Fl_Input |
| Fl_Input_Browser | Fl_Input_Browser |
| Fl_Int_Input | Fl_Int_Input |
| Fl_Int_List | Fl_Int_List |
| Fl_Int_Ptr_Map | Fl_Int_Ptr_Map |
| Fl_Int_String_Map | Fl_Int_String_Map |
| Fl_Item | Fl_Item |
| Fl_Item_Group | Fl_Item_Group |
| Fl_Labeltype_ | The abstract base class for labels |
| Fl_Light_Button | Fl_Light_Button |
| Fl_Line_Dial | Fl_Line_Dial |
| Fl_ListView | Fl_ListView. |
| Fl_ListView_Header | Fl_ListView_Header |
| Fl_Mail_Message | Main class for sending/receiving mails |
| Fl_Mail_Message_Part | This class is used for working with parts of Mail messages.. |
| Fl_Mail_Message_Part_List | This class is used by Fl_Mail_Message to hold all eventuall message parts |
| Fl_Main_Window | Easy interface for applications main windows |
| Fl_Map | Fl_Map |
| Fl_Masked_Input | Fl_Masked_Input |
| Fl_MDI_Bar | Fl_MDI_Bar |
| Fl_MDI_Titlebar | Fl_MDI_Titlebar |
| Fl_MDI_Viewport | Viewport is MDI window container |
| Fl_MDI_Window | Fl_MDI_Window |
| Fl_Memory_DS | Fl_Memory_DS |
| Fl_Menu_ | Fl_Menu_ |
| Fl_Menu_Bar | Fl_Menu_Bar |
| Fl_Menu_Button | Fl_Menu_Button |
| Fl_Menu_Divider | Fl_Menu_Divider |
| Fl_Menu_Window | Fl_Menu_Window |
| Fl_Multi_Browser | Fl_Multi_Browser |
| Fl_Multi_Image | Fl_Multi_Image |
| Fl_Multiline_Input | Fl_Multiline_Input |
| Fl_Multiline_Output | Fl_Multiline_Output |
| Fl_Mutex | Fl_Mutex |
| Fl_Named_Style | Fl_Named_Style |
| Fl_Nice_Slider | Fl_Nice_Slider |
| Fl_Numeric_Input | Fl_Numeric_Input |
| Fl_Output | Fl_Output |
| Fl_Overlay_Window | Fl_Overlay_Window |
| Fl_Pack | This grouping widget arranges and resizes all of it's children so they are all packed close together and completely fill the widget |
| Fl_Packed_Strings | Fl_Packed_Strings |
| Fl_Param | Fl_Param class used in database applications to define database query parameters |
| Fl_PixelFormat | Fl_PixelFormat, Everything in the pixel format structure is read-only |
| Fl_Pixmap | Fl_Pixmap is good for static XPM's e.g |
| Fl_Point | Fl_Point |
| Fl_Popup_Window | Fl_Popup_Window |
| Fl_PostScript | Fl_PostScript |
| Fl_Printer | Fl_Printer |
| Fl_ProgressBar | Fl_ProgressBar |
| Fl_Ptr_List | Fl_Ptr_List is implementation of EFLTK generic pointer-list.. |
| Fl_Ptr_Stack | Fl_Ptr_Stack |
| Fl_Radio_Button | Fl_Radio_Button |
| Fl_Radio_Buttons | Fl_Radio_Buttons |
| Fl_Radio_Item | Fl_Radio_Item |
| Fl_Radio_Light_Button | Fl_Radio_Light_Button |
| Fl_Rect | Fl_Rect |
| Fl_Renderer | Fl_Renderer |
| Fl_Repeat_Button | Fl_Repeat_Button |
| Fl_Return_Button | Fl_Return_Button |
| Fl_Roller | Fl_Roller |
| Fl_Round_Button | Fl_Round_Button |
| Fl_Round_Clock | Fl_Round_Clock |
| Fl_Screen_Info | Fl_Screen_Info |
| Fl_Scroll | Fl_Scroll |
| Fl_Scrollbar | Fl_Scrollbar |
| Fl_Secret_Input | Fl_Secret_Input |
| Fl_Shaped_Window | Fl_Shaped_Window |
| Fl_Simple_Html | Fl_Simple_Html class |
| Fl_Single_Window | Fl_Single_Window |
| Fl_Size | Fl_Size |
| Fl_Slider | Fl_Slider |
| Fl_Split | A simple splitter widget |
| Fl_Stock_Images | Fl_Stock_Images class allows to access to the set of predefined images by the image id |
| Fl_String | Fl_String |
| Fl_String_Buffer | Fl_String_Buffer is Fl_Buffer derived class used for all kind of string buffering.. |
| Fl_String_List | Fl_String based string list |
| Fl_String_Ptr_Map | Fl_String_Ptr_Map |
| Fl_String_Stack | Fl_String_Stack |
| Fl_String_String_Map | Fl_String_String_Map |
| Fl_Style | Fl_Style |
| Fl_Style_Set | Fl_Style_Set |
| Fl_Table_Base | Fl_Table_Base. |
| Fl_Tabs | Fl_Tabs |
| Fl_Text_Buffer | Fl_Text_Buffer |
| Fl_Text_Display | Fl_Text_Display |
| Fl_Text_Editor | Fl_Text_Editor |
| Fl_Text_Selection | Fl_Text_Selection |
| Fl_Thread | Fl_Thread |
| Fl_Tile | Fl_Tile |
| Fl_Toggle_Button | Fl_Toggle_Button |
| Fl_Toggle_Item | Fl_Toggle_Item |
| Fl_Tool_Bar | Tool bar for eFLTK applications |
| Fl_Tooltip | Fl_Tooltip |
| Fl_Translator | Fl_Translator |
| Fl_Valuator | Fl_Valuator |
| Fl_Value_Input | Fl_Value_Input |
| Fl_Value_Output | Fl_Value_Output |
| Fl_Value_Slider | Fl_Value_Slider |
| Fl_Variant | Fl_Variant |
| Fl_VertDivider | Fl_VertDivider |
| Fl_Widget | Fl_Widget is the base class for all widgets in FLTK |
| Fl_Widget_List | Fl_Widget_List |
| Fl_Window | Fl_Window |
| Fl_WM | The window manager module for eFLTK |
| Fl_Wordwrap_Input | Fl_Wordwrap_Input |
| Fl_Wordwrap_Output | Fl_Wordwrap_Output |
| Fl_Workspace | |
| Fl_XmlAttributes | Map for node attributes |
| Fl_XmlDefaultTokenizer | DefaultTokenizer class |
| Fl_XmlDoc | Entire XML document |
| Fl_XmlDocType | The Fl_XmlDocType represents tag <DOCTYPE ...> in XML document |
| Fl_XmlEntities | Maps an entity string to a presentation string |
| Fl_XmlException | EFLTK xml extension throws Fl_XmlException type exceptions |
| Fl_XmlHandler | XML parser event handler (SAX) |
| Fl_XmlLocator | Fl_XmlLocator class provides the XML handler with information about the position in a file |
| Fl_XmlNode | Node |
| Fl_XmlNode_List | The Fl_XmlNode_List interface provides the an ordered collection of nodes, The items in the NodeList are accessible via an integral index, starting from 0 |
| Fl_XmlParser | The XML parser class |
| Fl_XmlTokenizer | Base class for tokenizing through XML stream |
1.2.15