Table of Contents
XtGetSelectionValueIncremental, XtGetSelectionValuesIncremental
- obtain selection values
- void XtGetSelectionValueIncremental(Widget
w, Atom selection, Atom
- target, XtSelectionCallbackProc callback, XtPointer
client_data, Time time);
- void XtGetSelectionValuesIncremental(Widget w,
Atom selection,
- Atom *targets, int count, XtSelectionCallbackProc callback,
XtPointer client_data, Time time);
- callback
- Specifies the callback
procedure that is to be called when the selection value has been obtained.
- client_data
- Specifies the argument that is to be passed to the specified
procedure when it is called.
- client_data
- Specifies the client data (one for
each target type) that is passed to the callback procedure when it is called
for that target.
- count
- Specifies the length of the targets and client_data
lists.
- selection
- Specifies the particular selection desired (that is, primary
or secondary).
- target
- Specifies the type of the information that is needed
about the selection.
- targets
- Specifies the types of information that is needed
about the selection.
- time
- Specifies the timestamp that indicates when the
selection value is desired.
- w
- Specifies the widget that is making the request.
The XtGetSelectionValueIncremental function is similar to
XtGetSelectionValue except that the selection_callback procedure will
be called repeatedly upon delivery of multiple segments of the selection
value. The end of the selection value is indicated when selection_callback
is called with a non-NULL value of length zero, which must still be freed
by the client. If the transfer of the selection is aborted in the middle
of a transfer (for example, because to timeout), the selection_callback
procedure is called with a type value equal to the symbolic constant XT_CONVERT_FAIL
so that the requestor can dispose of the partial selection value it has
collected up until that point. Upon receiving XT_CONVERT_FAIL, the requesting
client must determine for itself whether or not a partially completed transfer
is meaningful.
The XtGetSelectionValuesIncremental function is similar
to XtGetSelectionValueIncremental except that it takes a list of target
types and a list of client data and obtains the current value of the selection
converted to each of the targets. The effect is as if each target were specified
in a separate call to XtGetSelectionValueIncremental. The callback is
called once with the corresponding client data for each target. XtGetSelectionValuesIncremental
does guarantee that all the conversions will use the same selection value
because the ownership of the selection cannot change in the middle of the
list, as would be when calling XtGetSelectionValueIncremental repeatedly.
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
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