App_widget_group

Data Structures
struct	widget_context
	Widget application context. More...

Enumerations
enum	command_id {   DUMMY_ID,   SLIDER_ID,   BUTTON_ID }
	Command event IDs. More...

Functions
bool	app_widget_launch (void)
	Setup widget demo. More...
static bool	widget_frame_command_handler (struct wtk_basic_frame *frame, win_command_t command_data)
	Frame handler for the application. More...

Variables
static struct widget_context *	widget_ctx
	Statically allocated context pointer. More...

enum command_id

Command event IDs.

Note

The first entry in this enum is zero-valued, and therefore reserved for widgets that should not issue command events.

See Also

Widget toolkit

Enumerator
DUMMY_ID	Unused command event ID.
SLIDER_ID
BUTTON_ID

bool app_widget_launch

(

void

)

Setup widget demo.

Allocates memory for the application context, and creates all widgets that make up its interface. If memory allocation or widget creation fails, the application exits immediately.

Returns

Boolean true if the application was launched successfully, false if a memory allocation occurred.

References win_attributes::area, BUTTON_ID, gfx_bitmap::color, gfx_bitmap::data, widget_context::frame, widget_context::frame_bg, GFX_BITMAP_SOLID, GFX_COLOR, GFX_COLOR_BLUE, GFX_COLOR_GREEN, GFX_COLOR_RED, GFX_COLOR_WHITE, membag_alloc(), membag_free(), win_window::parent, widget_context::plot, widget_context::plot_bg, win_area::pos, win_area::size, widget_context::slider, SLIDER_ID, gfx_bitmap::type, widget_frame_command_handler(), win_destroy(), win_get_attributes(), win_get_root(), win_inflate_area(), win_show(), wtk_basic_frame_as_child(), wtk_basic_frame_create(), wtk_button_as_child(), wtk_button_create(), wtk_plot_as_child(), wtk_plot_create(), WTK_PLOT_LEFT_TO_RIGHT, wtk_plot_set_grid(), WTK_PLOT_TICKS_VERTICAL, wtk_slider_as_child(), wtk_slider_create(), WTK_SLIDER_HORIZONTAL, win_point::x, and win_point::y.

Referenced by main().

static bool widget_frame_command_handler ( struct wtk_basic_frame *  frame, win_command_t  command_data  )

static

Frame handler for the application.

Handles all command events from the widgets in the application frame.

See Also

wtk_basic_frame_command_handler_t

Parameters

frame	Pointer to the application frame
command_data	Command event ID

Returns

True if exiting, to destroy the window

References BUTTON_ID, widget_context::plot, widget_context::slider, win_redraw(), wtk_basic_frame_get_custom_data(), wtk_plot_add_value(), wtk_plot_as_child(), and wtk_slider_get_value().

Referenced by app_widget_launch().

struct widget_context* widget_ctx

static

Statically allocated context pointer.