Hide navigation sidebar

Hide table of contents sidebar

Skip to content

Toggle site navigation sidebar

LVGL 9.3 documentation

Toggle table of contents sidebar

Select LVGL version

Introduction
Getting Started

Examples
Integration and Drivers
Toggle navigation of Integration and Drivers
- Adding LVGL to Your Project
  Toggle navigation of Adding LVGL to Your Project
- Bindings
  Toggle navigation of Bindings
- Build Systems
  Toggle navigation of Build Systems
  - make
  - CMake
- Chip vendors
  Toggle navigation of Chip vendors
  - Alif
  - Arm
  - Espressif (ESP32 Chip Series)
  - NXP
  - Renesas
    Toggle navigation of Renesas
  - STM32
- Drivers
  Toggle navigation of Drivers
  - Display
    Toggle navigation of Display
  - Libinput Driver
  - OpenGL ES Display/Inputs Driver
  - Touchpad
    Toggle navigation of Touchpad
    - Linux Evdev Driver
    - FT6X36
  - Wayland Display/Inputs driver
  - Windows Display/Inputs driver
  - X11 Display/Inputs driver
  - UEFI Display/Inputs driver
  - SDL Driver
- Renderers and GPUs
  Toggle navigation of Renderers and GPUs
- Frameworks
  Toggle navigation of Frameworks
- IDEs
  Toggle navigation of IDEs
  - MDK
  - Simulator on PC
- (RT)OS
  Toggle navigation of (RT)OS
  - FreeRTOS
  - MQX RTOS
  - NuttX RTOS
  - PX5 RTOS
  - QNX
  - RT-Thread RTOS
  - Yocto
    Toggle navigation of Yocto
  - Buildroot
    Toggle navigation of Buildroot
  - Zephyr
  - Torizon OS
- Boards
  Toggle navigation of Boards
  - Toradex
  - Riverdi
  - Viewe
Common Widget Features
Toggle navigation of Common Widget Features
- Widget Basics
- Positions, Sizes and Layouts
- Layers
- Styles
  Toggle navigation of Styles
  - Styles Overview
  - Style Properties
- Events
- Layouts
  Toggle navigation of Layouts
  - Flex
  - Grid
- Scrolling
All Widgets
Toggle navigation of All Widgets
Main Modules
Toggle navigation of Main Modules
- Display (lv_display)
  Toggle navigation of Display (lv_display)
- Input Device (lv_indev)
- Color (lv_color)
- Font (lv_font)
- Images (lv_image)
- Timer (lv_timer)
- Animation (lv_anim)
- File System (lv_fs_drv)
- Drawing
  Toggle navigation of Drawing
Auxiliary Modules
Toggle navigation of Auxiliary Modules
- File Explorer
- Font Manager
- Fragment
- Grid navigation
- Pinyin IME
- Image font
- Monkey
- Widget ID
- Widget Properties
- Observer
  Toggle navigation of Observer
  - How to Use
  - Examples
- Snapshot
- UI Testing
- XML - Declarative UI
  Toggle navigation of XML - Declarative UI
  - Introduction
  - Component Library
  - Project
  - Syntax
  - Components
  - Screens
  - Widgets
  - Preview
  - API
  - Styles
  - Constants
  - View
  - Fonts
  - Images
  - Events
  - Subjects
  - Animations
  - Translations
3rd-Party Libraries
Toggle navigation of 3rd-Party Libraries
Debugging
Toggle navigation of Debugging

Contributing
Toggle navigation of Contributing
Change Log
API
Toggle navigation of API
- lv_conf_kconfig.h
- lv_conf_internal.h
- lv_api_map_v9_1.h
- lvgl_private.h
- lvgl.h
- lv_api_map_v9_0.h
- lv_api_map_v8.h
- lv_init.h
- stdlib
  Toggle navigation of stdlib
  - lv_string.h
  - lv_mem.h
  - lv_sprintf.h
  - lv_mem_private.h
  - builtin
    Toggle navigation of builtin
    - lv_tlsf_private.h
    - lv_tlsf.h
- core
  Toggle navigation of core
- osal
  Toggle navigation of osal
- themes
  Toggle navigation of themes
  - lv_theme_private.h
  - lv_theme.h
  - simple
    Toggle navigation of simple
    - lv_theme_simple.h
  - mono
    Toggle navigation of mono
    - lv_theme_mono.h
  - default
    Toggle navigation of default
    - lv_theme_default.h
- others
  Toggle navigation of others
  - file_explorer
    Toggle navigation of file_explorer
    - lv_file_explorer.h
    - lv_file_explorer_private.h
  - xml
    Toggle navigation of xml
  - ime
    Toggle navigation of ime
    - lv_ime_pinyin.h
    - lv_ime_pinyin_private.h
  - fragment
    Toggle navigation of fragment
    - lv_fragment.h
    - lv_fragment_private.h
  - gridnav
    Toggle navigation of gridnav
    - lv_gridnav.h
  - observer
    Toggle navigation of observer
    - lv_observer_private.h
    - lv_observer.h
  - monkey
    Toggle navigation of monkey
    - lv_monkey_private.h
    - lv_monkey.h
  - test
    Toggle navigation of test
  - font_manager
    Toggle navigation of font_manager
    - lv_font_manager.h
    - lv_font_manager_recycle.h
  - snapshot
    Toggle navigation of snapshot
    - lv_snapshot.h
  - sysmon
    Toggle navigation of sysmon
    - lv_sysmon.h
    - lv_sysmon_private.h
  - imgfont
    Toggle navigation of imgfont
    - lv_imgfont.h
- display
  Toggle navigation of display
  - lv_display.h
  - lv_display_private.h
- libs
  Toggle navigation of libs
  - lodepng
    Toggle navigation of lodepng
    - lv_lodepng.h
  - bmp
    Toggle navigation of bmp
    - lv_bmp.h
  - barcode
    Toggle navigation of barcode
    - lv_barcode.h
    - lv_barcode_private.h
  - rle
    Toggle navigation of rle
    - lv_rle.h
  - bin_decoder
    Toggle navigation of bin_decoder
    - lv_bin_decoder.h
  - qrcode
    Toggle navigation of qrcode
    - lv_qrcode.h
    - lv_qrcode_private.h
  - tiny_ttf
    Toggle navigation of tiny_ttf
    - lv_tiny_ttf.h
  - svg
    Toggle navigation of svg
  - tjpgd
    Toggle navigation of tjpgd
    - lv_tjpgd.h
  - freetype
    Toggle navigation of freetype
    - lv_freetype.h
    - lv_freetype_private.h
  - ffmpeg
    Toggle navigation of ffmpeg
    - lv_ffmpeg_private.h
    - lv_ffmpeg.h
  - libpng
    Toggle navigation of libpng
    - lv_libpng.h
  - libjpeg_turbo
    Toggle navigation of libjpeg_turbo
    - lv_libjpeg_turbo.h
  - rlottie
    Toggle navigation of rlottie
    - lv_rlottie.h
    - lv_rlottie_private.h
  - fsdrv
    Toggle navigation of fsdrv
    - lv_fsdrv.h
  - gif
    Toggle navigation of gif
    - lv_gif.h
    - lv_gif_private.h
- font
  Toggle navigation of font
- widgets
  Toggle navigation of widgets
  - button
    Toggle navigation of button
    - lv_button_private.h
    - lv_button.h
  - msgbox
    Toggle navigation of msgbox
    - lv_msgbox.h
    - lv_msgbox_private.h
  - arclabel
    Toggle navigation of arclabel
    - lv_arclabel_private.h
    - lv_arclabel.h
  - slider
    Toggle navigation of slider
    - lv_slider.h
    - lv_slider_private.h
  - list
    Toggle navigation of list
    - lv_list.h
  - tileview
    Toggle navigation of tileview
    - lv_tileview.h
    - lv_tileview_private.h
  - objx_templ
    Toggle navigation of objx_templ
    - lv_objx_templ.h
  - label
    Toggle navigation of label
    - lv_label.h
    - lv_label_private.h
  - menu
    Toggle navigation of menu
    - lv_menu.h
    - lv_menu_private.h
  - buttonmatrix
    Toggle navigation of buttonmatrix
    - lv_buttonmatrix.h
    - lv_buttonmatrix_private.h
  - scale
    Toggle navigation of scale
    - lv_scale_private.h
    - lv_scale.h
  - textarea
    Toggle navigation of textarea
    - lv_textarea_private.h
    - lv_textarea.h
  - line
    Toggle navigation of line
    - lv_line.h
    - lv_line_private.h
  - 3dtexture
    Toggle navigation of 3dtexture
    - lv_3dtexture.h
    - lv_3dtexture_private.h
  - arc
    Toggle navigation of arc
    - lv_arc.h
    - lv_arc_private.h
  - span
    Toggle navigation of span
    - lv_span.h
    - lv_span_private.h
  - win
    Toggle navigation of win
    - lv_win.h
    - lv_win_private.h
  - calendar
    Toggle navigation of calendar
  - canvas
    Toggle navigation of canvas
    - lv_canvas_private.h
    - lv_canvas.h
  - animimage
    Toggle navigation of animimage
    - lv_animimage_private.h
    - lv_animimage.h
  - property
    Toggle navigation of property
    - lv_obj_property_names.h
    - lv_style_properties.h
  - switch
    Toggle navigation of switch
    - lv_switch_private.h
    - lv_switch.h
  - image
    Toggle navigation of image
    - lv_image.h
    - lv_image_private.h
  - roller
    Toggle navigation of roller
    - lv_roller_private.h
    - lv_roller.h
  - table
    Toggle navigation of table
    - lv_table_private.h
    - lv_table.h
  - dropdown
    Toggle navigation of dropdown
    - lv_dropdown_private.h
    - lv_dropdown.h
  - lottie
    Toggle navigation of lottie
    - lv_lottie.h
    - lv_lottie_private.h
  - spinbox
    Toggle navigation of spinbox
    - lv_spinbox.h
    - lv_spinbox_private.h
  - led
    Toggle navigation of led
    - lv_led_private.h
    - lv_led.h
  - tabview
    Toggle navigation of tabview
    - lv_tabview.h
    - lv_tabview_private.h
  - bar
    Toggle navigation of bar
    - lv_bar.h
    - lv_bar_private.h
  - checkbox
    Toggle navigation of checkbox
    - lv_checkbox_private.h
    - lv_checkbox.h
  - spinner
    Toggle navigation of spinner
    - lv_spinner.h
  - imagebutton
    Toggle navigation of imagebutton
    - lv_imagebutton.h
    - lv_imagebutton_private.h
  - keyboard
    Toggle navigation of keyboard
    - lv_keyboard.h
    - lv_keyboard_private.h
  - chart
    Toggle navigation of chart
    - lv_chart_private.h
    - lv_chart.h
- draw
  Toggle navigation of draw
  - lv_image_dsc.h
  - lv_draw.h
  - lv_draw_buf_private.h
  - lv_draw_3d.h
  - lv_draw_vector.h
  - lv_draw_arc.h
  - lv_draw_label_private.h
  - lv_draw_vector_private.h
  - lv_draw_private.h
  - lv_draw_image.h
  - lv_draw_rect_private.h
  - lv_draw_triangle_private.h
  - lv_image_decoder.h
  - lv_draw_mask.h
  - lv_draw_mask_private.h
  - lv_image_decoder_private.h
  - lv_draw_line.h
  - lv_draw_buf.h
  - lv_draw_rect.h
  - lv_draw_triangle.h
  - lv_draw_image_private.h
  - lv_draw_label.h
  - espressif
    Toggle navigation of espressif
    - ppa
      Toggle navigation of ppa
      - lv_draw_ppa_private.h
      - lv_draw_ppa.h
  - vg_lite
    Toggle navigation of vg_lite
  - opengles
    Toggle navigation of opengles
    - lv_draw_opengles.h
  - renesas
    Toggle navigation of renesas
    - dave2d
      Toggle navigation of dave2d
      - lv_draw_dave2d.h
      - lv_draw_dave2d_utils.h
  - dma2d
    Toggle navigation of dma2d
    - lv_draw_dma2d.h
    - lv_draw_dma2d_private.h
  - sdl
    Toggle navigation of sdl
    - lv_draw_sdl.h
  - sw
    Toggle navigation of sw
    - lv_draw_sw_utils.h
    - lv_draw_sw.h
    - lv_draw_sw_mask_private.h
    - lv_draw_sw_private.h
    - lv_draw_sw_grad.h
    - lv_draw_sw_mask.h
    - blend
      Toggle navigation of blend
      - lv_draw_sw_blend_to_rgb565.h
      - lv_draw_sw_blend_to_rgb888.h
      - lv_draw_sw_blend_to_l8.h
      - lv_draw_sw_blend_to_argb8888.h
      - lv_draw_sw_blend_to_rgb565_swapped.h
      - lv_draw_sw_blend_to_i1.h
      - lv_draw_sw_blend_to_argb8888_premultiplied.h
      - lv_draw_sw_blend_to_al88.h
      - lv_draw_sw_blend_private.h
      - lv_draw_sw_blend.h
      - neon
        Toggle navigation of neon
        
        lv_blend_neon.h
      - helium
        Toggle navigation of helium
        
        lv_blend_helium.h
      - arm2d
        Toggle navigation of arm2d
        
        lv_blend_arm2d.h
    - arm2d
      Toggle navigation of arm2d
      - lv_draw_sw_helium.h
      - lv_draw_sw_arm2d.h
  - nxp
    Toggle navigation of nxp
    - pxp
      Toggle navigation of pxp
    - g2d
      Toggle navigation of g2d
    - vglite
      Toggle navigation of vglite
  - nema_gfx
    Toggle navigation of nema_gfx
- indev
  Toggle navigation of indev
- misc
  Toggle navigation of misc
  - lv_fs.h
  - lv_timer.h
  - lv_circle_buf.h
  - lv_math.h
  - lv_timer_private.h
  - lv_color.h
  - lv_bidi.h
  - lv_text_private.h
  - lv_event.h
  - lv_color_op_private.h
  - lv_text.h
  - lv_bidi_private.h
  - lv_matrix.h
  - lv_log.h
  - lv_tree.h
  - lv_profiler_builtin.h
  - lv_text_ap.h
  - lv_area.h
  - lv_lru.h
  - lv_anim_timeline.h
  - lv_anim.h
  - lv_fs_private.h
  - lv_rb.h
  - lv_async.h
  - lv_palette.h
  - lv_grad.h
  - lv_profiler_builtin_private.h
  - lv_area_private.h
  - lv_style_private.h
  - lv_profiler.h
  - lv_utils.h
  - lv_assert.h
  - lv_anim_private.h
  - lv_ll.h
  - lv_rb_private.h
  - lv_event_private.h
  - lv_style_gen.h
  - lv_style.h
  - lv_color_op.h
  - lv_array.h
  - lv_iter.h
  - lv_templ.h
  - cache
    Toggle navigation of cache
    - lv_cache.h
    - lv_cache_entry_private.h
    - lv_cache_private.h
    - lv_cache_entry.h
    - instance
      Toggle navigation of instance
    - class
      Toggle navigation of class
- drivers
  Toggle navigation of drivers
  - lv_drivers.h
  - evdev
    Toggle navigation of evdev
    - lv_evdev_private.h
    - lv_evdev.h
  - libinput
    Toggle navigation of libinput
  - display
    Toggle navigation of display
    - ili9341
      Toggle navigation of ili9341
      - lv_ili9341.h
    - st7789
      Toggle navigation of st7789
      - lv_st7789.h
    - tft_espi
      Toggle navigation of tft_espi
      - lv_tft_espi.h
    - nxp_elcdif
      Toggle navigation of nxp_elcdif
      - lv_nxp_elcdif.h
    - lcd
      Toggle navigation of lcd
      - lv_lcd_generic_mipi.h
    - st_ltdc
      Toggle navigation of st_ltdc
      - lv_st_ltdc.h
    - ft81x
      Toggle navigation of ft81x
      - lv_ft81x_defines.h
      - lv_ft81x.h
    - fb
      Toggle navigation of fb
      - lv_linux_fbdev.h
    - renesas_glcdc
      Toggle navigation of renesas_glcdc
      - lv_renesas_glcdc.h
    - st7735
      Toggle navigation of st7735
      - lv_st7735.h
    - drm
      Toggle navigation of drm
      - lv_linux_drm.h
    - st7796
      Toggle navigation of st7796
      - lv_st7796.h
  - wayland
    Toggle navigation of wayland
  - x11
    Toggle navigation of x11
    - lv_x11.h
  - sdl
    Toggle navigation of sdl
  - windows
    Toggle navigation of windows
  - nuttx
    Toggle navigation of nuttx
  - glfw
    Toggle navigation of glfw
  - uefi
    Toggle navigation of uefi
  - qnx
    Toggle navigation of qnx
    - lv_qnx.h
- tick
  Toggle navigation of tick
  - lv_tick_private.h
  - lv_tick.h
- layouts
  Toggle navigation of layouts
  - lv_layout_private.h
  - lv_layout.h
  - grid
    Toggle navigation of grid
    - lv_grid.h
  - flex
    Toggle navigation of flex
    - lv_flex.h

Toggle table of contents sidebar

lv_mem_private.h¶

Copyright © 2021-2025, LVGL Kft

Made with Furo

Last updated on Jun 11, 2025