xcb\_query\_best\_size(3) XCB Requests xcb\_query\_best\_size(3)

# [NAME](#NAME)

xcb\_query\_best\_size -

# [SYNOPSIS](#SYNOPSIS)

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

## [Request function](#Request_function)

xcb\_query\_best\_size\_cookie\_t **xcb\_query\_best\_size**(xcb\_connection\_t \**conn*, uint8\_t *\_class*, xcb\_drawable\_t *drawable*, uint16\_t *width*, uint16\_t *height*);

## [Reply datastructure](#Reply_datastructure)

```
typedef struct xcb_query_best_size_reply_t {


    uint8_t  response_type;


    uint8_t  pad0;


    uint16_t sequence;


    uint32_t length;


    uint16_t width;


    uint16_t height;
} xcb_query_best_size_reply_t;
```

## [Reply function](#Reply_function)

xcb\_query\_best\_size\_reply\_t \***xcb\_query\_best\_size\_reply**(xcb\_connection\_t \**conn*, xcb\_query\_best\_size\_cookie\_t *cookie*, xcb\_generic\_error\_t \*\**e*);

# [REQUEST ARGUMENTS](#REQUEST_ARGUMENTS)

[*conn*](#conn)

The XCB connection to X11.

*\_class*

One of the following values:

[*XCB\_QUERY\_SHAPE\_OF\_LARGEST\_CURSOR*](#XCB_QUERY_SHAPE_OF_LARGEST_CURSOR)

TODO: NOT YET DOCUMENTED.

[*XCB\_QUERY\_SHAPE\_OF\_FASTEST\_TILE*](#XCB_QUERY_SHAPE_OF_FASTEST_TILE)

TODO: NOT YET DOCUMENTED.

[*XCB\_QUERY\_SHAPE\_OF\_FASTEST\_STIPPLE*](#XCB_QUERY_SHAPE_OF_FASTEST_STIPPLE)

TODO: NOT YET DOCUMENTED.

TODO: NOT YET DOCUMENTED.

[*drawable*](#drawable)

TODO: NOT YET DOCUMENTED.

[*width*](#width)

TODO: NOT YET DOCUMENTED.

[*height*](#height)

TODO: NOT YET DOCUMENTED.

# [REPLY FIELDS](#REPLY_FIELDS)

[*response\_type*](#response_type)

The type of this reply, in this case *XCB\_QUERY\_BEST\_SIZE*. 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).

[*width*](#width~2)

TODO: NOT YET DOCUMENTED.

[*height*](#height~2)

TODO: NOT YET DOCUMENTED.

# [DESCRIPTION](#DESCRIPTION)

# [RETURN VALUE](#RETURN_VALUE)

Returns an *xcb\_query\_best\_size\_cookie\_t*. Errors have to be handled when calling the reply function *xcb\_query\_best\_size\_reply*.

If you want to handle errors in the event loop instead, use *xcb\_query\_best\_size\_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)

# [AUTHOR](#AUTHOR)

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

libxcb 1.17.0 X Version 11

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Document: xcb_query_best_size_unchecked(3) from libxcb 1.17.0-r16 (Chainguard OS)
Source: https://gitlab.freedesktop.org/xorg/lib/libxcb.git