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Base: Move GML documentation into subsection

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That was the whole point of this endeavour :^)
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kleines Filmröllchen 2022-12-14 17:13:22 +01:00 • committed by Andrew Kaster
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Base/usr/share/man/man5/GML-Define-widget.md
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## Name
Library or Application Defined Widgets
## Description
Some applications and libraries find it useful to define their own widgets.
This is done using `REGISTER_WIDGET()`, just as in **LibGUI**. The syntax of the macro is as follows:
```cpp
REGISTER_WIDGET(namespace, class_name)
```
This means that every registered widget has to be placed in a namespace. For applications that usually do not need their own namespace, a common approach is to use the application name as the namespace for these registered widgets.
Note that registered widgets need to be constructible without any arguments.
## Examples
```gml
@Web::OutOfProcessWebView {
name: "web_view"
min_width: 340
min_height: 160
visible: false
}
```
```cpp
// OutOfProcessWebView.cpp
REGISTER_WIDGET(Web, OutOfProcessWebView)
...
OutOfProcessWebView::OutOfProcessWebView()
{
set_should_hide_unnecessary_scrollbars(true);
set_focus_policy(GUI::FocusPolicy::StrongFocus);
create_client();
}
...
```
## See also
- [GML Define property(5)](help://man/5/GML-Define-property)