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Create Properties when configured. Pending defaults to Current

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Change property semantics to create them with empty value
when they are configured.

When clients request the Pending value of a property without any pending
vlaue, the current value is returned instead.
This commit is contained in:
Keith Packard 2006-11-24 13:44:55 -08:00
parent af852261ef
commit a86f4b9442
1 changed files with 12 additions and 12 deletions
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24
randrproto.txt
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@ -649,15 +649,15 @@ dynamic changes in the display environment.
└───
Errors: Access, Name, Atom, Output
If the specified property does not exist for the specified output,
then a Name error is returned.
If the specified property is 'immutable', an Access error is
returned.
Otherwise, the configuration of the specified property is changed to
the values provided in this request.
If the specified property does not exist for the specified output,
it is created with an empty value and None type.
┌───
RRChangeOutputProperty
output: OUTPUT
@ -747,15 +747,15 @@ dynamic changes in the display environment.
L = MINIMUM(T, 4 × long-length)
A = N - (I + L)
If 'pending' is true, then the value returned will be the pending
value of the property rather than the current value. The returned
value starts at byte index I in the property (indexing from 0), and
its length in bytes is L. However, it is a Value error if
long-offset is given such that L is negative. The value of
bytes-after is A, giving the number of trailing unread bytes in the
stored property. If delete is True and the bytes-after is zero, the
property is also deleted from the output, and a
RROutputPropertyNotify event is generated.
If 'pending' is true, and if the property holds a pending value,
then the value returned will be the pending value of the property
rather than the current value. The returned value starts at byte
index I in the property (indexing from 0), and its length in bytes
is L. However, it is a Value error if long-offset is given such
that L is negative. The value of bytes-after is A, giving the
number of trailing unread bytes in the stored property. If delete
is True and the bytes-after is zero, the property is also deleted
from the output, and a RROutputPropertyNotify event is generated.
┌───
RRCreateMode