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TListBox: fix SelCount in case HandleAllocated = False. Issue #40361.

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(cherry picked from commit a4c9080f10)
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Bart 2023-07-07 22:42:15 +02:00 committed by Maxim Ganetsky
parent 719d3a2a7c
commit 33d3ac5e05
1 changed files with 13 additions and 1 deletions
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14
lcl/include/customlistbox.inc
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@ -450,11 +450,23 @@ end;
{ function TCustomListBox.GetSelCount }
{------------------------------------------------------------------------------}
function TCustomListBox.GetSelCount: integer;
var
i: Integer;
begin
if HandleAllocated then
Result := TWSCustomListBoxClass(WidgetSetClass).GetSelCount(Self)
else
Result := 0;
begin
if not MultiSelect then
Result := Ord(FItemIndex >- 1) //use FItemIndex since HandleAllocated = False
else
begin
Result := 0;
if FCacheValid then //otherwise GetSelectedCache raises an exception
for i := 0 to Items.Count - 1 do
if GetSelectedCache(i) then Inc(Result);
end;
end;
end;
function TCustomListBox.GetItemHeight: Integer;