cdk_screen(3) Library Functions Manual cdk_screen(3)
cdk_screen - Cdk Screen and Widget Manipulation Functions
cc [ flag ... ] file ... -lcdk [ library ... ] #include <cdk.h> void destroyCDKScreen( CDKSCREEN *screen); void endCDK(void) ; void eraseCDKScreen( CDKSCREEN *screen); void initCDKColor (void) ; CDKSCREEN *initCDKScreen ( WINDOW *cursesWindow); void lowerCDKObject( EObjectType widgetType, void *object); void raiseCDKObject( EObjectType widgetType, void *object); void refreshCDKScreen( CDKSCREEN *screen); void registerCDKObject ( CDKSCREEN *screen, EObjectType widgetType, void *object); void unregisterCDKObject( EObjectType widgetType, void *object);
Cdk manages all of the widgets for you. These functions perform some of the management of the widgets in a screen.
destroyCDKScreen frees any memory allocated by the Cdk screen pointer. endCDK cleans up any memory created by starting Cdk and shuts down curses. eraseCDKScreen erases all of the widgets which are currently associated to the given screen. This does NOT destroy the widgets. initCDKColor starts the Cdk color capabilities. It defines 64 color pairs each of which is accessible using the COLOR_PAIR macro. If you do not have color support, this function call makes no differ- ence. initCDKScreen takes a WINDOW* parameter cursesWindow and returns a pointer to a CDKSCREEN. Since all of the widgets take a CDKSCREEN pointer as a first argument, this is one of the first calls made. If the cursesWindow parameter is a null pointer, initCDKScreen initializes curses and replaces the parameter with stdscr. Oth- erwise, it assumes that your application has already initialized the locale and then called initscr In either case, the (possibly updated) cursesWindow parameter is used as the window for the CDKSCREEN result. lowerCDKObject has the opposite effect of the raiseCDKObject function call. raiseCDKObject raises the widget to the top of the screen. If there are any widgets which overlap the given object when a refresh is done, calling this function has the effect of raiding the object so no other widgets obstruct it. o The widgetType parameter states what Cdk widget type this object is. o The object parameter is a void pointer to the object. refreshCDKScreen redraws all of the widgets which are currently associated to the given screen. registerCDKObject is called automatically when a widget is created. If for some reason an object does get unregistered, by calling unregisterCD- KObject, the widget can be registered again by calling this function. o The widgetType parameter states what Cdk widget type this object is. o The object parameter is a void pointer to the object. unregisterCDKObject removes the widget from the screen. This does NOT destroy the object, it removes the widget from any further refreshes by the function refreshCDKScreen. o The widgetType parameter states what Cdk widget type this object is. o The object parameter is a void pointer to the object.
cdk(3), cdk_binding(3), cdk_display(3) cdk_screen(3)