---
name: "xcb_client_message_event_t"
section: "3"
platform: "linux"
package: "libxcb"
version: "1.17.0-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/xcb_client_message_event_t"
---

# xcb\_client\_message\_event\_t(3)

NOT YET DOCUMENTED

## NAME

xcb\_client\_message\_event\_t - NOT YET DOCUMENTED

## SYNOPSIS

**#include \<xcb/xproto.h\>**

### Event datastructure

```

typedef struct xcb_client_message_event_t {
    uint8_t                   response_type;
    uint8_t                   format;
    uint16_t                  sequence;
    xcb_window_t              window;
    xcb_atom_t                type;
    xcb_client_message_data_t data;
} xcb_client_message_event_t;
```

## EVENT FIELDS

- *response\_type*

  The type of this event, in this case *XCB\_CLIENT\_MESSAGE*. This field is also present in the *xcb\_generic\_event\_t* and can be used to tell events apart from each other.

- *sequence*

  The sequence number of the last request processed by the X11 server.

- *format*

  Specifies how to interpret *data*. Can be either 8, 16 or 32.

- *window*

  NOT YET DOCUMENTED.

- *type*

  An atom which indicates how the data should be interpreted by the receiving client.

- *data*

  The data itself (20 bytes max).

## DESCRIPTION

This event represents a ClientMessage, sent by another X11 client. An example is a client sending the *\_NET\_WM\_STATE* ClientMessage to the root window to indicate the fullscreen window state, effectively requesting that the window manager puts it into fullscreen mode.

## SEE ALSO

**xcb\_generic\_event\_t**(3), [**xcb\_send\_event**(3)](/xcb_send_event/3.md)

## AUTHOR

Generated from xproto.xml. Contact xcb@lists.freedesktop.org for corrections and improvements.