hmz007
README.md
xfa/fwl is a Widget Library for XFA Forms.
CFWL_Widget is the base class that widget classes extend. The derived widget classes are both controllers and renderers for each widget. The hierarchy is:
- CFWL_Widget
- CFWL_Form
- CFWL_Caret
- CFWL_CheckBox
- CFWL_ComboBox
- CFWL_DateTimePicker
- CFWL_Edit
- CFWL_Barcode
- CFWL_ComboEdit
- CFWL_DateTimeEdit
- CFWL_ListBox
- CFWL_ComboList
- CFWL_MonthCalendar
- CFWL_PictureBox
- CFWL_PushButton
- CFWL_ScrollBar
- CFWL_SpinButton
These CFWL widgets are instantiated by and closely related to the CXFA classes in the xfa/fxfa directory. See xfa/fxfa/README.md.
CFWL_Widget implements IFWL_WidgetDelegate through which it receives messages, events and draw calls.
Messages consist of user input for a widget to handle. Each type of message is identified by an enum value in Message::Type and has its own class derived from the base CFWL_Message.
- CFWL_Message
- CFWL_MessageKey
- CFWL_MessageKillFocus
- CFWL_MessageMouse
- CFWL_MessageMouseWheel
- CFWL_MessageSetFocus
Events are originated in the widgets and are then handled by other CFWL_Widget and CXFA classes.
- CFWL_Event
- CFWL_EventCheckWord
- CFWL_EventMouse
- CFWL_EventScroll
- CFWL_EventSelectChanged
- CFWL_EventTextWillChange
- CFWL_EventValidate
The widgets use IFWL_ThemeProvider for rendering everything, calling DrawBackground() and DrawText() and passing many options in their parameters, respectively of types CFWL_ThemeBackground and CFWL_ThemeText. See xfa/fwl/theme/README.md.