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Command: XtSendSelectionRequest | Section: 3 | Source: Digital UNIX | File: XtSendSelectionRequest.3Xt.gz
XtCreateSelectionRequest(3Xt) XtCreateSelectionRequest(3Xt)
NAME
XtCreateSelectionRequest, XtSendSelectionRequest, XtCancelSelectionRe-
quest - bundle multiple selection conversion requests into a single re-
quest using MULTIPLE target
SYNOPSIS
void XtCreateSelectionRequest(requestor, selection)
Widget requestor;
Atom selection;
void XtSendSelectionRequest(requestor, selection, time)
Widget requestor;
Atom selection;
Time time;
void XtCancelSelectionRequest(requestor, selection)
Widget requestor;
Atom selection;
ARGUMENTS
Specifies the widget making the request. Must be of class Core or a
subclass thereof. Specifies the particular selection desired. Speci-
fies the timestamp to be used in making the request.
DESCRIPTION
When XtCreateSelectionRequest is called, subsequent calls to XtGetSe-
lectionValue and XtGetSelectionValueIncremental with the requestor and
selection as specified to XtCreateSelectionRequest will be bundled into
a single selection conversion request with multiple targets. The re-
quest is actually initiated by calling XtSendSelectionRequest.
When XtSendSelectionRequest is called with a value of requestor and se-
lection matching a previous call to XtCreateSelectionRequest, a selec-
tion conversion request is actually sent to the selection owner. If a
single target request is queued, that request is made. If multiple tar-
gets are queued they are bundled into a single request with the target
MULTIPLE using the specified timestamp. As the conversions are made,
the callbacks associated with each XtGetSelectionValue and XtGetSelec-
tionValueIncremental are invoked in turn.
Multi-threaded applications should lock the application context before
calling XtCreateSelectionRequest and release the lock after calling
XtSendSelectionRequest to ensure that the thread assembling the request
is safe from interference by another thread assembling a different re-
quest naming the same widget and selection.
When XtCancelSelectionRequest is called, any requests queued since the
last call to XtCreateSelectionRequest are cleaned up. Subsequent calls
to XtGetSelectionValue, XtGetSelectionValues, XtGetSelectionValueIncre-
mental, and XtGetSelectionValuesIncremental will not be deferred.
SEE ALSO
X Toolkit Intrinsics -- C Language Interface
Xlib -- C Language X Interface
XtCreateSelectionRequest(3Xt)