Here is a list of all functions, variables, defines, enums, and typedefs with links to the files they belong to:

- w -

• wait() : usart_rs485_example_pdc.c
• wait_for_switches() : clock_example3_sam.c
• WAIT_RX_COMPLETE : freertos_peripheral_control.h
• WAIT_TIME : twi_eeprom_pdc_example.c , twi_eeprom_example.c
• WAIT_TX_COMPLETE : freertos_peripheral_control.h
• WAV_CHUNKID : wm8731_example.c
• wav_data : sam/components/audio/codec/wm8731/unit_tests/unit_tests.c
• WAV_FORMAT : wm8731_example.c
• WAV_LENGTH : sam/components/audio/codec/wm8731/unit_tests/unit_tests.c
• WAV_SUBCHUNKID : wm8731_example.c
• wave_to_dacc : sinewave_example.c
• WCHAR : fatfs/fatfs-r0.09/src/integer.h
• wdt_disable() : wdt.c , wdt.h
• wdt_get_status() : wdt.c , wdt.h
• wdt_get_timeout_value() : wdt.c , wdt.h
• wdt_get_us_timeout_period() : wdt.c , wdt.h
• WDT_Handler() : sam/drivers/wdt/unit_tests/unit_tests.c , wdt_example.c
• wdt_init() : wdt.c , wdt.h
• WDT_INVALID_ARGUMENT : wdt.h
• WDT_KEY_PASSWORD : wdt.c
• WDT_MAX_VALUE : wdt.c
• WDT_PERIOD : wdt_example.c
• WDT_RESET : sam/drivers/rstc/unit_tests/unit_tests.c
• wdt_restart() : wdt.h , wdt.c
• WDT_RESTART_PERIOD : wdt_example.c
• WDT_SLCK_DIV : wdt.c
• WEAK : compiler.h
• win_add_top_child() : win.c
• win_are_events_pending() : win.c
• WIN_ATTR_BACKGROUND : win.h
• WIN_ATTR_BEHAVIOR : win.h
• WIN_ATTR_CUSTOM : win.h
• WIN_ATTR_EVENTHANDLER : win.h
• WIN_ATTR_POSITION : win.h
• WIN_ATTR_SIZE : win.h
• win_attribute_mask_t : win.h
• WIN_BEHAVIOR_RAISE_ON_PRESS : win.h
• WIN_BEHAVIOR_REDRAW_PARENT : win.h
• win_behavior_t : win.h
• win_compute_clipping() : win.c
• win_compute_intersection() : win.c
• win_compute_union() : win.c
• win_create() : win.c
• win_destroy() : win.c
• win_destroy_children() : win.c
• win_draw() : win.c
• win_draw_child() : win.c
• win_draw_contents() : win.c
• win_draw_parent() : win.c
• WIN_EVENT_ATTRIBUTES : win.h
• WIN_EVENT_COMMAND : win.h
• WIN_EVENT_DESTROY : win.h
• WIN_EVENT_DRAW : win.h
• WIN_EVENT_GETFOCUS : win.h
• win_event_handler_t : win.h
• WIN_EVENT_KEYBOARD : win.h
• WIN_EVENT_LOSEFOCUS : win.h
• WIN_EVENT_POINTER : win.h
• win_event_queue : win.c
• win_event_queue_buffer : win.c
• WIN_EVENT_RAISE : win.h
• win_event_type : win.h
• WIN_EVENT_UNRAISE : win.h
• win_get_area() : win.c
• win_get_attributes() : win.c
• win_get_custom_data() : win.c
• win_get_parent() : win.c
• win_get_root() : win.c
• win_grab_pointer() : win.c
• win_handle_event() : win.c
• win_handle_pointer_event() : win.c
• win_hide() : win.c
• win_inflate_area() : win.c
• win_init() : win.c
• win_is_inside_area() : win.c
• win_is_inside_clip() : win.c
• win_is_inside_window() : win.c
• win_is_visible() : win.c
• win_keyboard_event_type : win.h
• win_keyboard_focus : win.c
• WIN_KEYBOARD_PRESS : win.h
• WIN_KEYBOARD_RELEASE : win.h
• win_last_pointer_pos : win.c
• win_lower() : win.c
• win_num_dropped_events : win.c
• win_pointer_event_type : win.h
• win_pointer_grabber : win.c
• WIN_POINTER_MOVE : win.h
• WIN_POINTER_PRESS : win.h
• WIN_POINTER_RELEASE : win.h
• win_pop_front_event() : win.c
• win_process_command_event() : win.c
• win_process_events() : win.c
• win_process_keyboard_event() : win.c
• win_process_pointer_event() : win.c
• win_queue_command_event() : win.c
• win_queue_event() : win.c
• win_queue_keyboard_event() : win.c
• win_queue_pointer_event() : win.c
• win_raise() : win.c
• win_redraw() : win.c
• win_reparent() : win.c
• win_reset_root_geometry() : win.c
• win_root : win.c
• win_root_background : win.c
• win_set_area() : win.c
• win_set_attributes() : win.c
• win_set_keyboard_focus() : win.c
• win_show() : win.c
• win_translate_area_to_parent() : win.c
• win_translate_win_to_root() : win.c
• win_unlink() : win.c
• WLR089 : parts.h
• WLR089_XPLAINED_PRO : board.h
• WLR089U : parts.h
• WLR089U0 : parts.h
• wm8731_adc_input_select() : wm8731.c , wm8731.h
• wm8731_dac_select() : wm8731.h , wm8731.c
• wm8731_enable_adc_high_pass_filter() : wm8731.c , wm8731.h
• wm8731_left_headphone_volume_set() : wm8731.c , wm8731.h
• wm8731_left_line_in_volume_set() : wm8731.c , wm8731.h
• wm8731_power_mode_adc_line_in() : wm8731.c , wm8731.h
• wm8731_power_mode_adc_mic() : wm8731.c , wm8731.h
• wm8731_power_mode_all_active() : wm8731.c , wm8731.h
• wm8731_power_mode_dac() : wm8731.c , wm8731.h
• wm8731_power_mode_standby() : wm8731.c , wm8731.h
• WM8731_REG_ACTIVE_CONTROL : wm8731.h
• WM8731_REG_ACTIVE_CONTROL_ACTIVE : wm8731.h
• WM8731_REG_ANALOGUE_AUDIO_PATH_CONTROL : wm8731.h
• WM8731_REG_ANALOGUE_AUDIO_PATH_CONTROL_BYPASS : wm8731.h
• WM8731_REG_ANALOGUE_AUDIO_PATH_CONTROL_DACSEL : wm8731.h
• WM8731_REG_ANALOGUE_AUDIO_PATH_CONTROL_INSEL_MIC : wm8731.h
• WM8731_REG_ANALOGUE_AUDIO_PATH_CONTROL_MICBOOST : wm8731.h
• WM8731_REG_ANALOGUE_AUDIO_PATH_CONTROL_MUTEMIC : wm8731.h
• WM8731_REG_ANALOGUE_AUDIO_PATH_CONTROL_SIDETONE : wm8731.h
• WM8731_REG_ANALOGUE_AUDIO_PATH_CONTROL_SIDETONE_ATTENUATION : wm8731.h
• WM8731_REG_ANALOGUE_AUDIO_PATH_CONTROL_SIDETONE_ATTENUATION_MSK : wm8731.h
• WM8731_REG_ANALOGUE_AUDIO_PATH_CONTROL_SIDETONE_ATTENUATION_POS : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_INTERFACE_FORMAT : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_INTERFACE_FORMAT_BCLKINV : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_INTERFACE_FORMAT_DSP : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_INTERFACE_FORMAT_I2S : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_INTERFACE_FORMAT_IWL_16_BIT : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_INTERFACE_FORMAT_IWL_20_BIT : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_INTERFACE_FORMAT_IWL_24_BIT : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_INTERFACE_FORMAT_IWL_32_BIT : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_INTERFACE_FORMAT_LRP : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_INTERFACE_FORMAT_LRSWAP : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_INTERFACE_FORMAT_MS : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_INTERFACE_FORMAT_MSB_LEFT_JUSTIFIED : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_INTERFACE_FORMAT_MSB_RIGHT_JUSTIFIED : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_PATH_CONTROL : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_PATH_CONTROL_ADCHPD : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_PATH_CONTROL_DACMU : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_PATH_CONTROL_DEEMP_32K : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_PATH_CONTROL_DEEMP_44_1K : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_PATH_CONTROL_DEEMP_48K : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_PATH_CONTROL_DEEMP_DISABLE : wm8731.h
• WM8731_REG_DIGITAL_AUDIO_PATH_CONTROL_HPOR : wm8731.h
• WM8731_REG_LEFT_HEADPHONE_OUT : wm8731.h
• WM8731_REG_LEFT_HEADPHONE_OUT_LHPVOL : wm8731.h
• WM8731_REG_LEFT_HEADPHONE_OUT_LHPVOL_MSK : wm8731.h
• WM8731_REG_LEFT_HEADPHONE_OUT_LHPVOL_POS : wm8731.h
• WM8731_REG_LEFT_HEADPHONE_OUT_LRHPBOTH : wm8731.h
• WM8731_REG_LEFT_HEADPHONE_OUT_LZCEN : wm8731.h
• WM8731_REG_LEFT_LINE_IN : wm8731.h
• WM8731_REG_LEFT_LINE_IN_LINMUTE : wm8731.h
• WM8731_REG_LEFT_LINE_IN_LINVOL : wm8731.h
• WM8731_REG_LEFT_LINE_IN_LINVOL_MSK : wm8731.h
• WM8731_REG_LEFT_LINE_IN_LINVOL_POS : wm8731.h
• WM8731_REG_LEFT_LINE_IN_LRINBOTH : wm8731.h
• WM8731_REG_POWER_DOWN_CONTROL : wm8731.h
• WM8731_REG_POWER_DOWN_CONTROL_ADCPD : wm8731.h
• WM8731_REG_POWER_DOWN_CONTROL_CLKOUTPD : wm8731.h
• WM8731_REG_POWER_DOWN_CONTROL_DACPD : wm8731.h
• WM8731_REG_POWER_DOWN_CONTROL_LINEINPD : wm8731.h
• WM8731_REG_POWER_DOWN_CONTROL_MICPD : wm8731.h
• WM8731_REG_POWER_DOWN_CONTROL_OSCPD : wm8731.h
• WM8731_REG_POWER_DOWN_CONTROL_OUTPD : wm8731.h
• WM8731_REG_POWER_DOWN_CONTROL_POWEROFF : wm8731.h
• WM8731_REG_RESET : wm8731.h
• WM8731_REG_RESET_VALUE : wm8731.h
• WM8731_REG_RESET_VALUE_MSK : wm8731.h
• WM8731_REG_RESET_VALUE_POS : wm8731.h
• WM8731_REG_RIGHT_HEADPHONE_OUT : wm8731.h
• WM8731_REG_RIGHT_HEADPHONE_OUT_RHPVOL : wm8731.h
• WM8731_REG_RIGHT_HEADPHONE_OUT_RHPVOL_MSK : wm8731.h
• WM8731_REG_RIGHT_HEADPHONE_OUT_RHPVOL_POS : wm8731.h
• WM8731_REG_RIGHT_HEADPHONE_OUT_RLHPBOTH : wm8731.h
• WM8731_REG_RIGHT_HEADPHONE_OUT_RZCEN : wm8731.h
• WM8731_REG_RIGHT_LINE_IN : wm8731.h
• WM8731_REG_RIGHT_LINE_IN_RINMUTE : wm8731.h
• WM8731_REG_RIGHT_LINE_IN_RINVOL : wm8731.h
• WM8731_REG_RIGHT_LINE_IN_RINVOL_MSK : wm8731.h
• WM8731_REG_RIGHT_LINE_IN_RINVOL_POS : wm8731.h
• WM8731_REG_RIGHT_LINE_IN_RLINBOTH : wm8731.h
• WM8731_REG_SAMPLING_CONTROL : wm8731.h
• WM8731_REG_SAMPLING_CONTROL_BOSR : wm8731.h
• WM8731_REG_SAMPLING_CONTROL_CLKIDIV2 : wm8731.h
• WM8731_REG_SAMPLING_CONTROL_CLKODIV2 : wm8731.h
• WM8731_REG_SAMPLING_CONTROL_SR : wm8731.h
• WM8731_REG_SAMPLING_CONTROL_SR_MSK : wm8731.h
• WM8731_REG_SAMPLING_CONTROL_SR_POS : wm8731.h
• WM8731_REG_SAMPLING_CONTROL_USB_MODE : wm8731.h
• wm8731_reset() : wm8731.c , wm8731.h
• wm8731_right_headphone_volume_set() : wm8731.c , wm8731.h
• wm8731_right_line_in_volume_set() : wm8731.c , wm8731.h
• wm8731_set_active() : wm8731.c , wm8731.h
• wm8731_set_bypass_enable() : wm8731.c , wm8731.h
• wm8731_set_core_clock_divider() : wm8731.c , wm8731.h
• wm8731_set_dac_phase() : wm8731.c , wm8731.h
• wm8731_set_dac_soft_mute() : wm8731.c , wm8731.h
• wm8731_set_deemphasis() : wm8731.c , wm8731.h
• wm8731_set_digital_audio_data_bit_length() : wm8731.c , wm8731.h
• wm8731_set_digital_audio_interface_format() : wm8731.c , wm8731.h
• wm8731_set_left_line_in_mute() : wm8731.c , wm8731.h
• wm8731_set_master_or_slave_mode() : wm8731.c , wm8731.h
• wm8731_set_mic_boost() : wm8731.c , wm8731.h
• wm8731_set_mic_mute() : wm8731.c , wm8731.h
• wm8731_set_output_clock_divider() : wm8731.c , wm8731.h
• wm8731_set_power_down_adc() : wm8731.h , wm8731.c
• wm8731_set_power_down_clkout() : wm8731.c , wm8731.h
• wm8731_set_power_down_dac() : wm8731.c , wm8731.h
• wm8731_set_power_down_line_in() : wm8731.c , wm8731.h
• wm8731_set_power_down_mic() : wm8731.h , wm8731.c
• wm8731_set_power_down_osc() : wm8731.c , wm8731.h
• wm8731_set_power_down_output() : wm8731.h , wm8731.c
• wm8731_set_power_off() : wm8731.c , wm8731.h
• wm8731_set_right_line_in_mute() : wm8731.h , wm8731.c
• wm8731_set_sampling_control() : wm8731.c , wm8731.h
• WM8731_SLAVE_ADDRESS : wm8731.h
• wm8731_write_register() : wm8731.c
• WORD : fatfs/fatfs-r0.09/src/integer.h
• Wr_bitfield : compiler.h
• Wr_bits : compiler.h
• write_buffer : nand_flash_raw_example.c , nand_flash_ecc_sw_example.c , common/components/memory/nand_flash/nand_flash_ebi/unit_tests/unit_tests.c
• Write_Interrupt_Flag : twi_eeprom_pdc_example.c
• write_page() : nand_flash_raw_nfc.c
• write_page_to_eeprom() : twi_unit_tests.c
• WRQ : BasicTFTP.h
• wtk_basic_frame_as_child() : wtk_basic_frame.h , wtk_basic_frame.c
• wtk_basic_frame_command_handler_t : wtk_basic_frame.h
• wtk_basic_frame_create() : wtk_basic_frame.c , wtk_basic_frame.h
• wtk_basic_frame_draw_handler_t : wtk_basic_frame.h
• wtk_basic_frame_get_custom_data() : wtk_basic_frame.c , wtk_basic_frame.h
• wtk_basic_frame_handler() : wtk_basic_frame.c
• wtk_button_as_child() : wtk_button.c , wtk_button.h
• wtk_button_create() : wtk_button.c , wtk_button.h
• wtk_button_get_command() : wtk_button.c , wtk_button.h
• wtk_button_handler() : wtk_button.c
• WTK_BUTTON_NORMAL : wtk_button.c
• WTK_BUTTON_PRESSED : wtk_button.c
• wtk_button_size_hint() : wtk_button.c , wtk_button.h
• wtk_button_state : wtk_button.c
• wtk_check_box_as_child() : wtk_check_box.c , wtk_check_box.h
• wtk_check_box_create() : wtk_check_box.h , wtk_check_box.c
• wtk_check_box_get_command() : wtk_check_box.c , wtk_check_box.h
• wtk_check_box_handler() : wtk_check_box.c
• wtk_check_box_is_selected() : wtk_check_box.c , wtk_check_box.h
• wtk_check_box_set() : wtk_check_box.c , wtk_check_box.h
• wtk_check_box_size_hint() : wtk_check_box.c , wtk_check_box.h
• wtk_check_box_state : wtk_check_box.c
• wtk_check_box_toggle() : wtk_check_box.c , wtk_check_box.h
• WTK_CHECKBOX_NORMAL : wtk_check_box.c
• WTK_CHECKBOX_PRESSED : wtk_check_box.c
• wtk_continue_drag() : wtk_frame.c
• wtk_copy_string() : wtk.c
• wtk_drag_origin : wtk_frame.c
• wtk_drag_origin_pixmap : wtk_frame.c
• wtk_drag_target_pixmap : wtk_frame.c
• wtk_frame_as_child() : wtk_frame.h , wtk_frame.c
• wtk_frame_as_parent() : wtk_frame.h , wtk_frame.c
• WTK_FRAME_AWAITING_MOVE : wtk_frame.c
• WTK_FRAME_AWAITING_RESIZE : wtk_frame.c
• wtk_frame_background : wtk_frame.c
• wtk_frame_create() : wtk_frame.c , wtk_frame.h
• wtk_frame_get_custom_data() : wtk_frame.h , wtk_frame.c
• wtk_frame_handler() : wtk_frame.c
• wtk_frame_handler_t : wtk_frame.h
• WTK_FRAME_MOVING : wtk_frame.c
• WTK_FRAME_NORMAL : wtk_frame.c
• WTK_FRAME_RESIZING : wtk_frame.c
• wtk_frame_state : wtk_frame.c
• wtk_handle_frame_move() : wtk_frame.c
• wtk_handle_frame_press() : wtk_frame.c
• wtk_handle_frame_release() : wtk_frame.c
• wtk_handle_resize_move() : wtk_frame.c
• wtk_handle_resize_press() : wtk_frame.c
• wtk_handle_resize_release() : wtk_frame.c
• wtk_icon_button_as_child() : wtk_icon.c , wtk_icon.h
• wtk_icon_button_create() : wtk_icon.c , wtk_icon.h
• wtk_icon_button_get_command() : wtk_icon.c , wtk_icon.h
• wtk_icon_button_handler() : wtk_icon.c
• wtk_icon_button_is_selected() : wtk_icon.h , wtk_icon.c
• wtk_icon_button_select() : wtk_icon.h , wtk_icon.c
• wtk_icon_button_size_hint() : wtk_icon.c , wtk_icon.h
• wtk_icon_button_state : wtk_icon.c
• wtk_icon_group_create() : wtk_icon.c , wtk_icon.h
• wtk_icon_group_get_selected() : wtk_icon.c , wtk_icon.h
• WTK_ICONBUTTON_NORMAL : wtk_icon.c
• WTK_ICONBUTTON_PRESSED : wtk_icon.c
• wtk_is_drag_threshold_exceeded() : wtk_frame.c
• wtk_label_as_child() : wtk_label.h , wtk_label.c
• wtk_label_change() : wtk_label.c , wtk_label.h
• wtk_label_create() : wtk_label.c , wtk_label.h
• wtk_label_handler() : wtk_label.c
• wtk_label_size_hint() : wtk_label.h , wtk_label.c
• wtk_plot_add_value() : wtk_plot.c , wtk_plot.h
• wtk_plot_as_child() : wtk_plot.c , wtk_plot.h
• wtk_plot_create() : wtk_plot.h , wtk_plot.c
• WTK_PLOT_DONT_REDRAW_PARENT : wtk_plot.h
• wtk_plot_draw() : wtk_plot.c
• wtk_plot_grid_draw() : wtk_plot.c
• WTK_PLOT_GRID_HORIZONTAL : wtk_plot.h
• WTK_PLOT_GRID_VERTICAL : wtk_plot.h
• wtk_plot_handler() : wtk_plot.c
• WTK_PLOT_INVERT : wtk_plot.h
• WTK_PLOT_LEFT_TO_RIGHT : wtk_plot.h
• WTK_PLOT_RIGHT_TO_LEFT : wtk_plot.h
• wtk_plot_set_colors() : wtk_plot.c , wtk_plot.h
• wtk_plot_set_grid() : wtk_plot.c , wtk_plot.h
• WTK_PLOT_TICKS_HORIZONTAL : wtk_plot.h
• WTK_PLOT_TICKS_VERTICAL : wtk_plot.h
• WTK_PLOT_ZERO : wtk_plot.h
• wtk_prepare_drag() : wtk_frame.c
• wtk_progress_bar_as_child() : wtk_progress_bar.h , wtk_progress_bar.c
• wtk_progress_bar_create() : wtk_progress_bar.c , wtk_progress_bar.h
• wtk_progress_bar_get_value() : wtk_progress_bar.c , wtk_progress_bar.h
• wtk_progress_bar_handler() : wtk_progress_bar.c
• WTK_PROGRESS_BAR_HORIZONTAL : wtk_progress_bar.h
• WTK_PROGRESS_BAR_INVERT : wtk_progress_bar.h
• wtk_progress_bar_set_colors() : wtk_progress_bar.c , wtk_progress_bar.h
• wtk_progress_bar_set_value() : wtk_progress_bar.c , wtk_progress_bar.h
• WTK_PROGRESS_BAR_VERTICAL : wtk_progress_bar.h
• wtk_radio_button_as_child() : wtk_radio_button.h , wtk_radio_button.c
• wtk_radio_button_create() : wtk_radio_button.h , wtk_radio_button.c
• wtk_radio_button_get_command() : wtk_radio_button.c , wtk_radio_button.h
• wtk_radio_button_handler() : wtk_radio_button.c
• wtk_radio_button_is_selected() : wtk_radio_button.c , wtk_radio_button.h
• wtk_radio_button_select() : wtk_radio_button.h , wtk_radio_button.c
• wtk_radio_button_size_hint() : wtk_radio_button.h , wtk_radio_button.c
• wtk_radio_button_state : wtk_radio_button.c
• wtk_radio_group_create() : wtk_radio_button.c , wtk_radio_button.h
• wtk_radio_group_get_selected() : wtk_radio_button.c , wtk_radio_button.h
• WTK_RADIOBUTTON_NORMAL : wtk_radio_button.c
• WTK_RADIOBUTTON_PRESSED : wtk_radio_button.c
• wtk_rescale_value() : wtk.c
• wtk_resize_frame() : wtk_frame.c
• wtk_slider_as_child() : wtk_slider.c , wtk_slider.h
• WTK_SLIDER_CMD_MOVE : wtk_slider.h
• WTK_SLIDER_CMD_NONE : wtk_slider.h
• WTK_SLIDER_CMD_RELEASE : wtk_slider.h
• wtk_slider_create() : wtk_slider.h , wtk_slider.c
• wtk_slider_get_command() : wtk_slider.h , wtk_slider.c
• wtk_slider_get_value() : wtk_slider.c , wtk_slider.h
• wtk_slider_handler() : wtk_slider.c
• WTK_SLIDER_HORIZONTAL : wtk_slider.h
• WTK_SLIDER_INVERT : wtk_slider.h
• wtk_slider_is_moving() : wtk_slider.h , wtk_slider.c
• WTK_SLIDER_MOVING : wtk_slider.c
• WTK_SLIDER_NORMAL : wtk_slider.c
• wtk_slider_set_value() : wtk_slider.h , wtk_slider.c
• wtk_slider_state : wtk_slider.c
• WTK_SLIDER_VERTICAL : wtk_slider.h
• wtk_start_drag() : wtk_frame.c
• wtk_stop_drag() : wtk_frame.c