i := listview1.Items.Count;
with ListView1 do
begin
ListItem:=Items.Add;
ListItem.Caption:= IntToStr(i);
ListItem.SubItems.Add('第 '+IntToStr(i)+' 行');
ListItem.SubItems.Add('第三列内容');
end;
//按标题删除
for i:=ListView1.Items.Count-1 downto 0 Do
if ListView1.Items[i].Caption = Edit1.Text then
begin
ListView1.Items.Item[i].Delete(); //删除当前选中行
end;
//选中一行
if ListView1.Selected <> nil then
Edit1.Text := ListView1.Selected.Caption;
// listview1.Items[Listview1.Items.Count -1].Selected := True;
// listview1.Items[Listview1.Items.Count -1].MakeVisible(True);
// 选择第一条
procedure TForm1.Button2Click(Sender: TObject);
begin
listview1.SetFocus;
listview1.Items[0].Selected := True;
end;
// 选择最后一条
procedure TForm1.Button1Click(Sender: TObject);
begin
listview1.SetFocus;
listview1.Items[Listview1.Items.Count -1].Selected := True;
end;
//此为调用过程,可以任意指定要移动的Item,下面是当前(Selected)Item
procedure ListViewItemMoveUpDown(lv : TListView; Item : TListItem; MoveUp, SetFocus : Boolean);
var
DestItem : TListItem;
begin
if (Item = nil) or
((Item.Index - 1 < 0) and MoveUp) or
((Item.Index + 1 >= lv.Items.Count) and (not MoveUp))
then Exit;
lv.Items.BeginUpdate;
try
if MoveUp then
DestItem := lv.Items.Insert(Item.Index - 1)
else
DestItem := lv.Items.Insert(Item.Index + 2);
DestItem.Assign(Item);
lv.Selected := DestItem;
Item.Free;
finally
lv.Items.EndUpdate;
end;
if SetFocus then lv.SetFocus;
DestItem.MakeVisible(False);
end;
ListViewItemMoveUpDown(ListView1, ListView1.Selected, True, True);//上移
ListViewItemMoveUpDown(ListView1, ListView1.Selected, False, True);//下移
TListView组件使用方法
引用CommCtrl单元
procedure TForm1.Button1Click(Sender: TObject);
begin
ListView_DeleteColumn(MyListView.Handle, i);//i是要删除的列的序号,从0开始
end;
用LISTVIEW显示表中的信息:
begin
tlistview(listv).Items.BeginUpdate; { listv:listview名 }
try
tlistview(listv).Items.Clear;
with table do { table or query名 }
begin
active: = true;
first;
while not eof do
begin
listitem: = tlistview(listv).Items.add;
listitem.Caption: = trim(table.fields[i].asstring);
// listitem.ImageIndex: = 8 ;
next;
end ;
end ;
finally
tlistview(listv).Items.EndUpdate;
end ;
end ;
ListView使用中的一些要点。以下以一个两列的ListView为例。
增加一行:
with ListView1 do
begin
ListItem:=Items.Add;
ListItem.Caption:='第一列内容';
ListItem.SubItems.Add('第二列内容');
end;
清空ListView1:
ListView1.Items.Clear;
得到当前被选中行的行的行号以及删除当前行:
For i:=0 to ListView1.Items.Count-1 Do
If ListView1.Items[i].Selected then //i=ListView1.Selected.index
begin
ListView1.Items.Delete(i); //删除当前选中行
end;
当然,ListView有OnSelectItem事件,可以判断选择了哪行,用个全局变量把它赋值出来。
读某行某列的操作:
Edit1.Text := listview1.Items[i].Caption; //读第i行第1列
Edit2.Text := listview1.Items[i].SubItems.strings[0]; //读第i行第2列
Edit3.Text := listview1.Items[i].SubItems.strings[1]; //读第i行第3列
以次类推,可以用循环读出整列。
将焦点上移一行:
For i:=0 to ListView1.Items.Count-1 Do
If (ListView1.Items[i].Selected) and (i>0) then
begin
ListView1.SetFocus;
ListView1.Items.Item[i-1].Selected := True;
end;
ListView1.SetFocus;
ListView1.ItemIndex:=3;
就能设定焦点了。
Delphi的listview能实现交替颜色么?
Sender: TCustomListView; Item: TListItem; State: TCustomDrawState;
var DefaultDraw: Boolean);
var
i: integer;
begin
i: = (Sender as TListView).Items.IndexOf(Item);
if odd(i) then sender.Canvas.Brush.Color: = $02E0F0D7
else sender.Canvas.Brush.Color: = $02F0EED7;
Sender.Canvas.FillRect(Item.DisplayRect(drIcon));
end ;