Delphi ListView基本用法大全
ListView1.Clear;
ListView1.Columns.Clear;
ListView1.Columns.Add;
ListView1.Columns.Add;
ListView1.Columns.Add;
ListView1.Columns.Items[0].Caption := ' id' ;
ListView1.Columns.Items[1].Caption := ' type' ;
ListView1.Columns.Items[2].Caption := ' title' ;
ListView1.Columns.Items[2].Width := 300;
Listview1.ViewStyle := vsreport;
Listview1.GridLines := true; //注:此处代码也可以直接在可视化编辑器中完成,
也可写成以下这样
begin
with listview1 do
begin
Columns.Add;
Columns.Add;
Columns.Add;
ViewStyle := vsreport;
GridLines := true;
columns.items[0].caption := ' 进程名' ;
columns.items[1].caption := ' 进程ID' ;
columns.items[2].caption := ' 进程文件路径' ;
Columns.Items[0].Width := 100;
Columns.Items[1].Width := 100;
Columns.Items[2].Width := 150;
end
end;
//增加记录
with listview1.items.add do
begin
caption := ' 1212 ' ;
subitems.add(' hh1' );
subitems.add(' hh2' );
end;
//删除
listview1.items.delete(0);
//从数据库表里读取数据写入Listview
var
Titem: Tlistitem; //此处一定要预定义临时记录存储变量.
begin
ListView1.Items.Clear;
with adoquery1 do
begin
close;
sql.Clear;
sql.Add(' select spmc, jg, sl from kcxs' );
Open;
ListView1.Items.Clear;
whilenot eof do
begin
Titem := ListView1.Items.add;
Titem.Caption := FieldByName(' spmc' ).Value;
Titem.SubItems.Add(FieldByName(' sl' ).Value);
Titem.SubItems.Add(FieldByName(' jg' ).Value);
next;
end;
//删除
ListView1.DeleteSelected;
//如何取得ListView中选中行的某一列的值
procedure TForm1.Button2Click(Sender: TObject);
begin
ShowMessage(ListView1.Selected.SubItems.Strings[1]); //返回选中行第三列中的值
end;
showMessage(listView1.Selected.Caption); //返回选中行第一列的值.
第1列的值： - - > > > ListView1.Selected.Caption
第i列的值(i > 1): - - > > > ListView1.Selected.SubItems.Strings[i]
ListView1.Items.Item[1].SubItems.GetText); //取得listview某行某列的值
Edit2.Text := listview1.Items[i].SubItems.strings[0]; //读第i行第2列
返回选中行所有子列值.是以回车符分开的，你还要从中剥离出来你要的子列的值。
showMessage(ListView1.Selected.SubItems.GetText);
ListView 简单排序的实现
ListView 排序
怎样实现单击一下按升序, 再单击一下按降序。
function CustomSortProc(Item1, Item2: TListItem; ColumnIndex: integer): integer; stdcall;
begin
if ColumnIndex = 0 then
Result := CompareText(Item1.Caption, Item2.Caption)
else
Result := CompareText(Item1.SubItems[ColumnIndex - 1], Item2.SubItems[ColumnIndex - 1])
end;
procedure TFrmSrvrMain.ListView1ColumnClick(Sender: TObject;
Column: TListColumn);
begin
ListView1.CustomSort(@CustomSortProc, Column.Index);
end;
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
//增加
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 <> nilthen
Edit1.Text := ListView1.Selected.Caption;
// listview1.Items[Listview1.Items.Count -1].Selected := True;
// listview1.Items[Listview1.Items.Count -1].MakeVisible(True);
procedure TForm1.Button2Click(Sender: TObject); // 选择第一条
begin
listview1.SetFocus;
listview1.Items[0].Selected := True;
end;
procedure TForm1.Button1Click(Sender: TObject); // 选择最后一条
begin
listview1.SetFocus;
listview1.Items[Listview1.Items.Count - 1].Selected := True;
end;
//这是个通用的过程
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;
//此为调用过程，可以任意指定要移动的Item，下面是当前(Selected)Item
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：
procedure viewchange(listv: tlistview; table: tcustomadodataset; var i: integer);
begin
tlistview(listv).Items.BeginUpdate; {listv:listview名}
try
tlistview(listv).Items.Clear;
with table do{table or query名}
begin
active := true;
first;
whilenot 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;
不过在Delphi6中，ListView多了一个ItemIndex属性，所以只要
ListView1.SetFocus;
ListView1.ItemIndex := 3;
就能设定焦点了。
Delphi的listview能实现交替颜色么？
procedure TForm1.ListView1CustomDrawItem(
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;
来源： < http: //blog.csdn.net/lenglengdeyu/article/details/2972804>
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