FMX.ListView.TListView.OnSearchChange
Delphi
property OnSearchChange: TNotifyEvent read FOnSearchChange write FOnSearchChange;
C++
__property OnSearchChange;
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| event | published | FMX.ListView.pas FMX.ListView.hpp |
FMX.ListView | TListView |
Description
Occurs when the search box in a list view loses the focus and its content has changed since it gained the focus.
FMX.ListView.TListView.OnSearchChange inherits from FMX.ListView.TListViewBase.OnSearchChange. All content below this line refers to FMX.ListView.TListViewBase.OnSearchChange.
Occurs when the search box in a list view loses the focus and its content has changed since it gained the focus. This event exposes the OnChange event of the TSearchBox that implements the search box of a list view.
For example, the code snippet below updates the text in a status bar on this event to show the number of items left in the list after the specified filter is applied:
Delphi:
procedure TMainForm.ListViewSearchChange(Sender: TObject);
var
I: Integer;
SearchBox: TSearchBox;
List: TListView;
begin
List := Sender as TListView;
for I := 0 to List.Controls.Count-1 do
if List.Controls[I].ClassType = TSearchBox then
begin
SearchBox := TSearchBox(List.Controls[I]);
Break;
end;
StatusBar.Text := IntToStr(List.Items.Count) + ' list items match ' + QuotedStr(SearchBox.Text) + '.';
end;
C++:
void __fastcall TMainForm::ListViewSearchChange(TObject *Sender)
{
TSearchBox* searchBox;
TListView* list = reinterpret_cast<TListView*>(Sender);
for (int i = 0; i < list->Controls->Count; i++) {
searchBox = dynamic_cast<TSearchBox*>(list->Controls->Items[i]);
if (searchBox) break;
}
MainForm->StatusBar->Text = UnicodeString(list->Items->Count) + " list items match " + QuotedStr(searchBox->Text) + ".";
}