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73 lines
2.1 KiB
Markdown
73 lines
2.1 KiB
Markdown
2 years ago
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# Tabview (lv_tabview)
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## Overview
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The Tab view object can be used to organize content in tabs.
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The Tab view is built from other widgets:
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- Main container: [lv_obj](/widgets/obj))
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- Tab buttons: [lv_btnmatrix](/widgets/core/btnmatrix)
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- Container for the tabs: [lv_obj](/widgets/obj)
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- Content of the tabs: [lv_obj](/widgets/obj)
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The tab buttons can be positioned on the top, bottom, left and right side of the Tab view.
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A new tab can be selected either by clicking on a tab button or by sliding horizontally on the content.
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## Parts and Styles
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There are no special parts on the Tab view but the `lv_obj` and `lv_btnnmatrix` widgets are used to create the Tab view.
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## Usage
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### Create a Tab view
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`lv_tabview_create(parent, tab_pos, tab_size);` creates a new empty Tab view. `tab_pos` can be `LV_DIR_TOP/BOTTOM/LEFT/RIGHT` to position the tab buttons to a side.
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`tab_size` is the height (in case of `LV_DIR_TOP/BOTTOM`) or width (in case of `LV_DIR_LEFT/RIGHT`) tab buttons.
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### Add tabs
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New tabs can be added with `lv_tabview_add_tab(tabview, "Tab name")`. This will return a pointer to an [lv_obj](/widgets/obj) object where the tab's content can be created.
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### Rename tabs
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A tab can be renamed with `lv_tabview_rename_tab(tabview, tab_id, "New Name")`.
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### Change tab
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To select a new tab you can:
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- Click on its tab button
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- Slide horizontally
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- Use `lv_tabview_set_act(tabview, id, LV_ANIM_ON/OFF)` function
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### Get the parts
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`lv_tabview_get_content(tabview)` returns the container for the tabs, `lv_tabview_get_tab_btns(tabview)` returns the Tab buttons object which is a [Button matrix](/widgets/core/btnmatrix).
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## Events
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- `LV_EVENT_VALUE_CHANGED` Sent when a new tab is selected by sliding or clicking the tab button. `lv_tabview_get_tab_act(tabview)` returns the zero based index of the current tab.
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Learn more about [Events](/overview/event).
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## Keys
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Keys have effect only on the tab buttons (Button matrix). Add manually to a group if required.
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Learn more about [Keys](/overview/indev).
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## Example
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```eval_rst
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.. include:: ../../../examples/widgets/tabview/index.rst
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```
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## API
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```eval_rst
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.. doxygenfile:: lv_tabview.h
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:project: lvgl
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```
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