Искать текст в TListView



Заходит как то программист в комп.магазин долго ходил смотрел всё высматривал потом подходит к продавщице и просит посмотреть каталог, потом минуту спустя спрашивает:
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// Call FindCaption Method to search for a list view item labeled by the 
// string specified as the Value parameter 
// Syntax: 
function FindCaption(StartIndex: Integer; Value: string;
Partial, Inclusive, Wrap: Boolean): TListItem;
// Example, Beispiel: 
procedure TForm1.Button1Click(Sender: TObject);
var
lvItem: TListItem;
begin
lvItem := ListView1.FindCaption(0,      // StartIndex: Integer; 
'99',   // Search string: string; 
True,   // Partial, 
True,   // Inclusive 
False); // Wrap  : boolean; 
if lvItem <> nil then
begin
ListView1.Selected := lvItem;
lvItem.MakeVisible(True);
ListView1.SetFocus;
end;
end;
// To search for a list view subitem (also for items), use this function: 
{
Search for text in a listview item
@Param lv is the listview, supposed to be in vaReport mode
@Param S is the text to search for
@Param column is the column index for the column to search , 0-based
@Returns the found listview item, or Nil if none was found
@Precondition  lv  nil, lv in report mode if column  0, S not empty
@Desc The search is case-insensitive and will only match on the
complete column content. Use AnsiContainsText instead of AnsiCompareText
to match on a substring in the columns content.
Created 14.10.2001 by P. Below
}
function FindListViewItem(lv: TListView; const S: string; column: Integer): TListItem;
var
i: Integer;
found: Boolean;
begin
Assert(Assigned(lv));
Assert((lv.viewstyle = vsReport) or (column = 0));
Assert(S <> '');
for i := 0 to lv.Items.Count - 1 do
begin
Result := lv.Items[i];
if column = 0 then
found := AnsiCompareText(Result.Caption, S) = 0
else if column > 0 then
found := AnsiCompareText(Result.SubItems[column - 1], S) = 0
else
found := False;
if found then
Exit;
end;
// No hit if we get here 
Result := nil;
end;
// Example call: 
procedure TForm1.Button1Click(Sender: TObject);
var
lvItem: TListItem;
begin
// Search subitem[0] for text from edit1 
// in der Spalte subitem[0] den Text aus Edit1 suchen 
lvItem := FindListViewItem(ListView1, Edit1.Text, 1);
// if found, then show the item 
// falls item gefunden, dann anzeigen 
if lvItem <> nil then
begin
ListView1.Selected := lvItem;
lvItem.MakeVisible(True);
ListView1.SetFocus;
end;
end;
// Function to search items and select if found 
procedure LV_FindAndSelectItems(lv: TListView; const S: string; column: Integer);
var
i: Integer;
found: Boolean;
lvItem: TListItem;
begin
Assert(Assigned(lv));
Assert((lv.ViewStyle = vsReport) or (column = 0));
Assert(S <> '');
for i := 0 to lv.Items.Count - 1 do
begin
lvItem := lv.Items[i];
if column = 0 then
found := AnsiCompareText(lvItem.Caption, S) = 0
else if column > 0 then
begin
if lvItem.SubItems.Count >= Column then
found := AnsiCompareText(lvItem.SubItems[column - 1], S) = 0
else
found := False;
end
else
found := False;
if found then
begin
lv.Selected := lvItem;
end;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
lvItem: TListItem;
begin
// in der Spalte subitem[0] den Text aus Edit1 suchen 
LV_FindAndSelectItems(ListView1, Edit1.Text, 1);
ListView1.SetFocus;
end;


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