procedure TForm1.Button2Click(Sender: TObject);
var
i:integer;
begin
i:=ListBox1.ItemIndex;
ListBox1.Items.Delete(i);
ListBox1.Items.Delete(i+1); //需要判断是否超过范围
ListBox1.Items.Delete(i+2);
end;
var
i:integer;
begin
i:=ListBox1.ItemIndex;
ListBox1.Items.Delete(i);
ListBox1.Items.Delete(i+1); //需要判断是否超过范围
ListBox1.Items.Delete(i+2);
end;
for i:=1 to 3 do
ListBox1.Items.Delete(0);
后三个
for i:=1 to 3 do
ListBox1.Items.Delete(ListBox1.Items.Count-1);
自N起三个
for i:=1 to 3 do
ListBox1.Items.Delete(N-1);
先ListBox1.MultiSelect:=true;
然后
for i:=(ListBox1.items.count-1) downto 0 do
if ListBox1.Selected(i) then
ListBox1.items.delete(i);
或是用另一种LIST控件,他的每列有CHECKED的属性,叫什么我网了.