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xcb: add xcb_error(), a generic describe-an-x-error function

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By default, generates an error message with the major/minor opcodes,
the error code and sequence number.

If available, it will use xcb-errors to generate an even better
description.
This commit is contained in:
Daniel Eklöf 2019-01-15 20:44:21 +01:00
parent 7a8ba94a49
commit fae2e5cb18
5 changed files with 67 additions and 44 deletions
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6
modules/xwindow.c
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@ -88,6 +88,7 @@ update_application(struct module *mod)
xcb_get_property_reply_t *r = xcb_get_property_reply(m->conn, c, &e);
if (e != NULL) {
LOG_ERR("failed to get _NET_WM_PID");
free(e);
free(r);
return;
@ -236,6 +237,9 @@ run(struct module *mod)
_e = xcb_poll_for_event(m->conn))
{
switch (XCB_EVENT_RESPONSE_TYPE(_e)) {
case 0:
LOG_ERR("%s", xcb_error((const xcb_generic_error_t *)_e));
case XCB_PROPERTY_NOTIFY: {
xcb_property_notify_event_t *e = (xcb_property_notify_event_t *)_e;
if (e->atom == _NET_ACTIVE_WINDOW ||
@ -256,8 +260,6 @@ run(struct module *mod)
}
break;
}
case 0: break; /* error */
}
free(_e);