xcb\_dbe\_get\_visual\_info(3) XCB Requests xcb\_dbe\_get\_visual\_info(3)

# [NAME](#NAME)

xcb\_dbe\_get\_visual\_info - Requests visuals that support double buffering

# [SYNOPSIS](#SYNOPSIS)

**#include <xcb/dbe.h>**

## [Request function](#Request_function)

xcb\_dbe\_get\_visual\_info\_cookie\_t **xcb\_dbe\_get\_visual\_info**(xcb\_connection\_t \**conn*, uint32\_t *n\_drawables*, const xcb\_drawable\_t \**drawables*);

## [Reply datastructure](#Reply_datastructure)

```
typedef struct xcb_dbe_get_visual_info_reply_t {


    uint8_t  response_type;


    uint8_t  pad0;


    uint16_t sequence;


    uint32_t length;


    uint32_t n_supported_visuals;


    uint8_t  pad1[20];
} xcb_dbe_get_visual_info_reply_t;
```

## [Reply function](#Reply_function)

xcb\_dbe\_get\_visual\_info\_reply\_t \***xcb\_dbe\_get\_visual\_info\_reply**(xcb\_connection\_t \**conn*, xcb\_dbe\_get\_visual\_info\_cookie\_t *cookie*, xcb\_generic\_error\_t \*\**e*);

## [Reply accessors](#Reply_accessors)

int **xcb\_dbe\_get\_visual\_info\_supported\_visuals\_length**(const xcb\_dbe\_get\_visual\_info\_reply\_t \**reply*);

xcb\_dbe\_visual\_infos\_iterator\_t **xcb\_dbe\_get\_visual\_info\_supported\_visuals\_iterator**(const xcb\_dbe\_get\_visual\_info\_reply\_t \**reply*);

# [REQUEST ARGUMENTS](#REQUEST_ARGUMENTS)

[*conn*](#conn)

The XCB connection to X11.

[*n\_drawables*](#n_drawables)

TODO: NOT YET DOCUMENTED.

[*drawables*](#drawables)

TODO: NOT YET DOCUMENTED.

# [REPLY FIELDS](#REPLY_FIELDS)

[*response\_type*](#response_type)

The type of this reply, in this case *XCB\_DBE\_GET\_VISUAL\_INFO*. This field is also present in the *xcb\_generic\_reply\_t* and can be used to tell replies apart from each other.

[*sequence*](#sequence)

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

[*length*](#length)

The length of the reply, in words (a word is 4 bytes).

[*n\_supported\_visuals*](#n_supported_visuals)

TODO: NOT YET DOCUMENTED.

# [DESCRIPTION](#DESCRIPTION)

# [RETURN VALUE](#RETURN_VALUE)

Returns an *xcb\_dbe\_get\_visual\_info\_cookie\_t*. Errors have to be handled when calling the reply function *xcb\_dbe\_get\_visual\_info\_reply*.

If you want to handle errors in the event loop instead, use *xcb\_dbe\_get\_visual\_info\_unchecked*. See [**xcb-requests(3)**](/man/os/libxcb/xcb-requests.3) for details.

# [ERRORS](#ERRORS)

This request does never generate any errors.

# [SEE ALSO](#SEE_ALSO)

[**xcb-requests**(3)](/man/os/libxcb/xcb-requests.3)

# [AUTHOR](#AUTHOR)

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

libxcb 1.17.0 X Version 11

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Document: xcb_dbe_get_visual_info_reply(3) from libxcb 1.17.0-r18 (Chainguard OS)
Source: https://gitlab.freedesktop.org/xorg/lib/libxcb.git