GdkWayland.WaylandToplevelExported
Description: Reference for GdkWayland.WaylandToplevelExported

### Function

# GdkWaylandWaylandToplevelExported

#### Declaration

    void
    (* GdkWaylandToplevelExported) (
      GdkToplevel* toplevel,
      const char* handle,
      gpointer user_data
    )

#### Description [src]

Callback that gets called when the handle for a surface has been obtained from the Wayland compositor.

This callback is used in `gdk_wayland_toplevel_export_handle()`.

The `handle` can be passed to other processes, for the purpose of marking surfaces as transient for out-of-process surfaces.

#### Parameters

`toplevel` | `GdkWaylandToplevel`
| The `GdkToplevel` that is exported.
| The data is owned by the caller of the function.
`handle` | `const char*`
| The handle.
| The data is owned by the caller of the function.
| The value is a NUL terminated UTF-8 string.
`user_data` | `gpointer`
| User data that was passed to `gdk_wayland_toplevel_export_handle()`
| The argument can be `NULL`.
| The data is owned by the caller of the function.