mirror of
https://github.com/lvgl/lvgl.git
synced 2025-01-28 07:03:00 +08:00
107 lines
2.5 KiB
ReStructuredText
107 lines
2.5 KiB
ReStructuredText
.. _lv_msgbox:
|
|
|
|
=======================
|
|
Message box (lv_msgbox)
|
|
=======================
|
|
|
|
Overview
|
|
********
|
|
|
|
Message boxes act as pop-ups. They are built from a content area
|
|
with a helper to add text, an optional header (which can have
|
|
a title, a close button, and other buttons), and an optional footer
|
|
with buttons.
|
|
|
|
The text will be broken into multiple lines and the height
|
|
will be set automatically. If the height
|
|
is set manually, the content will become scrollable.
|
|
|
|
The message box can be modal (blocking clicks on the rest of the screen)
|
|
or not modal.
|
|
|
|
.. _lv_msgbox_parts_and_styles:
|
|
|
|
Parts and Styles
|
|
****************
|
|
|
|
The message box is built from other widgets, so you can check these
|
|
widgets' documentation for details.
|
|
|
|
- Content, header, and footer: :ref:`lv_obj`
|
|
- Buttons: :ref:`lv_button`
|
|
- Title and content text: :ref:`lv_label`
|
|
|
|
.. _lv_msgbox_usage:
|
|
|
|
Usage
|
|
*****
|
|
|
|
Create a message box
|
|
--------------------
|
|
|
|
:cpp:expr:`lv_msgbox_create(parent)` creates a message box.
|
|
If ``parent`` is ``NULL`` the message box will be modal.
|
|
|
|
Get the parts
|
|
-------------
|
|
|
|
The building blocks of the message box can be obtained using the
|
|
following functions:
|
|
|
|
.. code:: c
|
|
|
|
lv_obj_t * lv_msgbox_get_content(lv_obj_t * obj);
|
|
lv_obj_t * lv_msgbox_get_title(lv_obj_t * obj);
|
|
lv_obj_t * lv_msgbox_get_header(lv_obj_t * obj);
|
|
lv_obj_t * lv_msgbox_get_footer(lv_obj_t * obj);
|
|
|
|
Functions that add something to the message box return the newly added object:
|
|
|
|
.. code:: c
|
|
|
|
lv_obj_t * lv_msgbox_add_text(lv_obj_t * obj, const char * text);
|
|
lv_obj_t * lv_msgbox_add_title(lv_obj_t * obj, const char * title);
|
|
lv_obj_t * lv_msgbox_add_close_button(lv_obj_t * obj);
|
|
lv_obj_t * lv_msgbox_add_header_button(lv_obj_t * obj, const void * icon);
|
|
lv_obj_t * lv_msgbox_add_footer_button(lv_obj_t * obj, const char * text);
|
|
|
|
|
|
Close the message box
|
|
---------------------
|
|
|
|
:cpp:expr:`lv_msgbox_close(msgbox)` closes (deletes) the message box.
|
|
|
|
:cpp:expr:`lv_msgbox_close_async(msgbox)` closes (deletes) the message box
|
|
asynchronously. This is useful if you want the message box to close the on
|
|
the next call to ``lv_timer_handler`` instead of immediately.
|
|
|
|
.. _lv_msgbox_events:
|
|
|
|
Events
|
|
******
|
|
|
|
No special events are sent by this widget.
|
|
|
|
Learn more about :ref:`events`.
|
|
|
|
.. _lv_msgbox_keys:
|
|
|
|
Keys
|
|
****
|
|
|
|
No *Keys* are processed by the object type.
|
|
|
|
Learn more about :ref:`indev_keys`.
|
|
|
|
.. _lv_msgbox_example:
|
|
|
|
Example
|
|
*******
|
|
|
|
.. include:: ../examples/widgets/msgbox/index.rst
|
|
|
|
.. _lv_msgbox_api:
|
|
|
|
API
|
|
***
|