c - What's the right way to call xcb_connect_to_display_with_auth_info() given a Xauthority file? -

When I try to install a XCB connection for display stored in a string dpy , I know that I can do this in two different ways to do:

1. just Call xcb_connect (dpy, NULL) , or
< Li> environment variable display code> dpy and call xcb_connect (zero, zero) .

But, my X server requires a Xauthority file, I can only install a XCB connection if I environmental set XAUTHORITY Xauthority file path and then < Code> xcb_connect (dpy, zero) is called .

I want to install this connection without setting the environment variable XAUTHORITY . I know there is a funcion xcb_connect_to_display_with_auth_info () a xcb_auth_info_t struct in XCB API, but I struct a Xauthority file path for how to make it I do not know at all.

How can I do this?

A xcb_auth_info_t content struct, XSet Authority Parameters are similar to

Unfortunately, this is not well documented.

The name is the name of the authorization method (for example "MIT-Magic-Cookie-1"), and data validation data (for example a 128-bit cookie).

would like to avoid using XAUTHORITY env var, but a .Xauthority file, I think you can use XauReadAuth . Parsing the Xauthority file and detecting the detection you are connecting to, identifying and extracting the authentication method and data.