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unit testform;
{$mode objfpc} {$H+}
interface
uses
Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ComCtrls,
Buttons, StdCtrls, ExtCtrls, Spin;
type
{ TForm1 }
TForm1 = class(TForm)
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
Button5: TButton;
Button6: TButton;
CheckBox1: TCheckBox;
CheckBox2: TCheckBox;
CheckBox3: TCheckBox;
CheckBox4: TCheckBox;
CheckBox5: TCheckBox;
ChBoxOwnerData: TCheckBox;
CheckBox6: TCheckBox;
CheckBox7: TCheckBox;
HideSelection: TCheckBox;
ComboBox1: TComboBox;
ComboBox2: TComboBox;
ComboBox3: TComboBox;
ComboBox4: TComboBox;
Edit1: TEdit;
Edit10: TEdit;
Edit11: TEdit;
Edit2: TEdit;
Edit3: TEdit;
Edit4: TEdit;
Edit5: TEdit;
Edit6: TEdit;
Edit7: TEdit;
Edit8: TEdit;
Edit9: TEdit;
ImageList1: TImageList;
Label1: TLabel;
Label10: TLabel;
Label11: TLabel;
Label12: TLabel;
Label13: TLabel;
Label14: TLabel;
lblSetCount: TLabel;
Label2: TLabel;
Label3: TLabel;
Label4: TLabel;
Label5: TLabel;
Label6: TLabel;
Label7: TLabel;
Label8: TLabel;
Label9: TLabel;
ListView1: TListView;
PageControl1: TPageControl;
Page1: TTabSheet;
Page2: TTabSheet;
Page3: TTabSheet;
OwnerDataCount: TSpinEdit;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
procedure Button5Click(Sender: TObject);
procedure Button6Click(Sender: TObject);
procedure ChBoxOwnerDataChange(Sender: TObject);
procedure CheckBox1Click (Sender: TObject );
procedure CheckBox2Click (Sender: TObject );
procedure CheckBox3Click(Sender: TObject);
procedure CheckBox4Click(Sender: TObject);
procedure CheckBox5Click(Sender: TObject);
procedure CheckBox6Change(Sender: TObject);
procedure CheckBox7Change(Sender: TObject);
procedure ComboBox1Change (Sender: TObject );
procedure ComboBox2Change(Sender: TObject);
procedure ComboBox3Change(Sender: TObject);
procedure ComboBox4Change(Sender: TObject);
procedure Edit10Change (Sender: TObject );
procedure Edit11Change(Sender: TObject);
procedure Edit1Change (Sender: TObject );
procedure Edit2Change (Sender: TObject );
procedure Edit3Change(Sender: TObject);
procedure Edit4Change(Sender: TObject);
procedure Edit5Change(Sender: TObject);
procedure Edit6Change(Sender: TObject);
procedure Edit7Change(Sender: TObject);
procedure Edit8Change(Sender: TObject);
procedure HideSelectionChange(Sender: TObject);
procedure ListView1ColumnClick(Sender: TObject; Column: TListColumn);
procedure ListView1Data(Sender: TObject; Item: TListItem);
procedure ListView1SelectItem(Sender: TObject; Item: TListItem; Selected: Boolean);
procedure OwnerDataCountChange(Sender: TObject);
private
procedure ShowItemData;
procedure ShowColumnData;
protected
public
{ public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.lfm}
{ TForm1 }
procedure TForm1.Button1Click(Sender: TObject);
var
Item: TListItem;
begin
if ListView1.OwnerData then
// OwnerDataCount.OnChange() triggers new items count.
OwnerDataCount.Value := ListView1.Items.Count + 1
else
begin
Item := ListView1.Items.Insert(StrToIntDef(Edit1.Text, 0));
Item.Caption := Format('Item %d', [ListView1.Items.Count]);
end;
end;
procedure TForm1.Button2Click(Sender: TObject);
var
Item: TListItem;
Idx: Integer;
begin
if ListView1.OwnerData then
OwnerDataCount.Value := ListView1.Items.Count - 1
else
begin
Idx := StrToIntDef(Edit1.Text, 0);
if (Idx < 0) or (Idx > ListView1.Items.Count - 1) then
exit;
Item := ListView1.Items[Idx];
Item.Free;
end;
end;
procedure TForm1.Button3Click(Sender: TObject);
var
Column: TListColumn;
begin
Column := ListView1.Columns.Add;
Column.Caption := Format('Column %d', [ListView1.Columns.Count]);
Column.Index := (StrToIntDef(Edit2.Text, 0));
end;
procedure TForm1.Button4Click(Sender: TObject);
var
Column: TListColumn;
begin
Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
Column.Free;
end;
procedure TForm1.Button5Click(Sender: TObject);
var
Item: TListItem;
Idx: Integer;
begin
Idx := StrToIntDef(Edit1.Text, 0);
if (Idx < 0) or (Idx > ListView1.Items.Count - 1) then
exit;
Item := ListView1.Items[Idx];
Item.Selected := True;
end;
procedure TForm1.Button6Click(Sender: TObject);
var
Item: TListItem;
Idx: Integer;
begin
Idx := StrToIntDef(Edit1.Text, 0);
if (Idx < 0) or (Idx > ListView1.Items.Count - 1) then
exit;
Item := ListView1.Items[Idx];
Item.Focused := True;
end;
procedure TForm1.ChBoxOwnerDataChange(Sender: TObject);
var
B: Boolean;
AItem: TListItem;
begin
B := TCheckBox(Sender).Checked;
lblSetCount.Enabled := B;
OwnerDataCount.Enabled := B;
ListView1.BeginUpdate;
try
ListView1.Clear; // first clear all items because virtual and normal items are different classes
finally
ListView1.EndUpdate;
end;
ListView1.OwnerData := B;
ListView1.BeginUpdate;
try
if B then
ListView1.Items.Count := OwnerDataCount.Value
else
begin
with ListView1 do
begin
AItem := Items.Add;
AItem.Caption := 'New 1';
AItem.ImageIndex := 0;
AItem.StateIndex := 0;
AItem.SubItems.Add('Sub 1');
AItem := Items.Add;
AItem.Caption := 'New 2';
end;
end;
finally
ListView1.EndUpdate;
end;
end;
procedure TForm1.CheckBox1Click(Sender: TObject);
var
Column: TListColumn;
begin
Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
Column.Visible := CheckBox1.Checked;
end;
procedure TForm1.CheckBox2Click(Sender: TObject);
var
Column: TListColumn;
begin
Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
Column.Autosize := CheckBox2.Checked;
end;
procedure TForm1.CheckBox3Click(Sender: TObject);
begin
Listview1.Multiselect := CheckBox3.Checked;
end;
procedure TForm1.CheckBox4Click(Sender: TObject);
begin
ListView1.RowSelect := CheckBox4.Checked;
end;
procedure TForm1.CheckBox5Click(Sender: TObject);
begin
ListView1.ShowColumnHeaders := CheckBox5.Checked;
end;
procedure TForm1.CheckBox6Change(Sender: TObject);
begin
ListView1.AutoWidthLastColumn := TCheckBox(Sender).Checked;
end;
procedure TForm1.CheckBox7Change(Sender: TObject);
begin
ListView1.ReadOnly := TCheckBox(Sender).Checked;
end;
procedure TForm1.ComboBox1Change (Sender: TObject );
var
Column: TListColumn;
begin
Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
Column.Alignment := TAlignment(ComboBox1.ItemIndex);
end;
procedure TForm1.ComboBox2Change(Sender: TObject);
begin
ListView1.Scrollbars := TScrollStyle(ComboBox2.ItemIndex);
end;
procedure TForm1.ComboBox3Change(Sender: TObject);
begin
ListView1.SortType := TSortType(ComboBox3.ItemIndex);
end;
procedure TForm1.ComboBox4Change(Sender: TObject);
begin
ListView1.ViewStyle := TViewStyle(ComboBox4.ItemIndex);
end;
procedure TForm1.Edit10Change(Sender: TObject);
var
Item: TListItem;
n, idx: Integer;
begin
idx := StrToIntDef(Edit1.Text, 0);
if (idx < 0) or (idx > ListView1.Items.Count - 1) then
exit;
Item := ListView1.Items[idx];
for n := Item.SubItems.Count to ListView1.Columns.Count - 2 do
Item.Subitems.Add('');
n := StrToIntDef(Edit5.Text, 0);
if n >= ListView1.Columns.Count then Exit;
idx := StrToIntDef(Edit10.Text, -1);
if n = 0 then
Item.ImageIndex := idx
else
Item.SubitemImages[n - 1] := idx;
end;
procedure TForm1.Edit11Change(Sender: TObject);
var
i: Integer;
begin
i := 0;
if TryStrToInt(Edit11.Text, i) then
ListView1.SortColumn := i;
end;
procedure TForm1.Edit1Change(Sender: TObject);
begin
ShowItemData;
end;
procedure TForm1.Edit2Change(Sender: TObject);
begin
ShowColumnData;
end;
procedure TForm1.Edit3Change(Sender: TObject);
var
Column: TListColumn;
begin
Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
Column.Caption := Edit3.Text;
end;
procedure TForm1.Edit4Change(Sender: TObject);
var
Item: TListItem;
n: Integer;
begin
n := StrToIntDef(Edit1.Text, 0);
if (n < 0) or (n > ListView1.Items.Count - 1) then
exit;
Item := ListView1.Items[n];
for n := Item.SubItems.Count to ListView1.Columns.Count - 2 do
Item.Subitems.Add('');
n := StrToIntDef(Edit5.Text, 0);
if n >= ListView1.Columns.Count then Exit;
if n = 0
then Item.Caption := Edit4.Text
else Item.Subitems[n - 1] := Edit4.Text;
end;
procedure TForm1.Edit5Change(Sender: TObject);
begin
ShowItemData;
end;
procedure TForm1.Edit6Change(Sender: TObject);
var
Column: TListColumn;
begin
Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
Column.Width := StrToIntDef(Edit6.Text, 0);
end;
procedure TForm1.Edit7Change (Sender: TObject );
var
Column: TListColumn;
begin
Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
Column.MinWidth := StrToIntDef(Edit7.Text, 0);
end;
procedure TForm1.Edit8Change (Sender: TObject );
var
Column: TListColumn;
begin
Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
Column.MaxWidth := StrToIntDef(Edit8.Text, 0);
end;
procedure TForm1.HideSelectionChange(Sender: TObject);
begin
Listview1.HideSelection := HideSelection.Checked;
end;
procedure TForm1.ListView1ColumnClick(Sender: TObject; Column: TListColumn);
begin
Edit2.Text := IntToStr(Column.Index);
Edit5.Text := IntToStr(Column.Index);
end;
procedure TForm1.ListView1Data(Sender: TObject; Item: TListItem);
var
i: Integer;
begin
if (ListView1.ColumnCount > 0) then
begin
Item.Caption := 'OwnerData item '+IntToStr(Item.Index);
Item.ImageIndex := -1;
Item.StateIndex := -1;
for i := 1 to ListView1.ColumnCount - 1 do
Item.SubItems.Add('OwnerData subitem ['+IntToStr(Item.Index)+','+IntToStr(i)+']');
end;
end;
procedure TForm1.ListView1SelectItem(Sender: TObject; Item: TListItem; Selected: Boolean);
var
subIdx: Integer;
begin
if not Selected then Exit;
Edit1.Text := IntToStr(Item.Index);
end;
procedure TForm1.OwnerDataCountChange(Sender: TObject);
begin
if not ListView1.OwnerData then
exit;
ListView1.BeginUpdate;
ListView1.Items.Count := TSpinEdit(Sender).Value;
ListView1.EndUpdate;
end;
procedure TForm1.ShowItemData;
var
Item: TListItem;
idx: Integer;
begin
idx := StrToIntDef(Edit1.Text, 0);
if (idx < 0) or (idx > ListView1.Items.Count - 1) then
exit;
Item := ListView1.Items[idx];
idx := StrToIntDef(Edit5.Text, 0);
if idx = 0
then begin
Edit4.Text := Item.Caption;
Edit10.Text := IntToStr(Item.ImageIndex);
Exit;
end;
if Item.SubItems.Count <= idx - 1 then Exit;
Edit4.Text := Item.SubItems[idx - 1];
Edit10.Text := IntToStr(Item.SubItemImages[idx - 1]);
end;
procedure TForm1.ShowColumnData;
var
Column: TListColumn;
begin
Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
Edit3.Text := Column.Caption;
Edit6.Text := IntToStr(Column.Width);
Edit7.Text := IntToStr(Column.MinWidth);
Edit8.Text := IntToStr(Column.MaxWidth);
Edit9.Text := IntToStr(Column.Imageindex);
ComboBox1.ItemIndex := Ord(Column.Alignment);
CheckBox1.Checked := Column.Visible;
CheckBox2.Checked := Column.AutoSize;
end;
end.
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