Make a TFindDialog and TReplaceDialog Modal?

I am using some TFindDialog and TReplace Dialogs in m开发者_如何学运维y Application.

How can I show the Dialogs Modally, like the Open and Save Dialogs do? I dont want any user to be able to select any controls in the Application when the Find and Replace Dialog is open.

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For the simple case of a single-window application I might try something like this:

procedure TYourForm.FindButtonClick(Sender: TObject);
begin
  Self.Enabled := False;
  FindDialog.Execute;
end;
...
procedure TYourForm.FindDialogClose(Sender: TObject);
begin
  Self.Enabled := True;
end;

That is, the first method is the click handler of a button. The second one is the FindDialog.OnClose event handler.

For a more complex case I would probably have a look at the source code of TCustomForm.ShowModal.