https://issues.apache.org/ooo/show_bug.cgi?id=125901
Issue ID: 125901
Issue Type: DEFECT
Summary: Multi-select list box in C++ indicates item 65535 is
selected when none (or multiple) are
Product: App Dev
Version: 4.0.1
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: api
Assignee: [email protected]
Reporter: [email protected]
If the C++ API is used to make a multi-select list box using some of these
constructs included here just for orientation
Reference<XInterface> model = xMSF->createInstance(
OUSTRING("com.sun.star.awt.UnoControlListBoxModel"));
...
PropertySetHelper(model).set("MultiSelection", Any(multiSelection))
...
Reference<XListBox> result(insertByName(name, model), UNO_QUERY);
and an item selection listener is configured
Reference<XItemListener> xItemListener =
static_cast<XItemListener*>(&listener);
...
result->addItemListener(xItemListener);
then the listener will be called both when a selection is made and also when a
second selection is made or the first is unmade by, for example, clicking on a
previously selected item with the control key pressed. When nothing is
selected (or maybe more than one item is selected) the usual procedure is to
indicate that item -1 is selected. Instead, item 65535 is selected.
Somewhere in the OpenOffice code a sal_Int16 value of -1 is being converted to
a sal_Int32 value in the wrong way. As a result, the listener's code needs a
work-around similar to this:
void onListSelected(int id, sal_Int32 selected) {
bool hide = selected < 0 || selected == 65535;
...
It would be good to track that down and fix it.
This behavior has been observed for both Windows 7 and Fedora Linux64, but I
think the problem is probably more general.
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