Action in Form1 after Form2 is closed - delphi

Question

I try to make file manager in Delphi and there is I need to be able create new folders.
So, i got my Main Form and when I press button Create New Folder other form appears where I can type new folder name and confrim or cancel creation.
So I created new form for folder creation and make it invisible.
I made it like this - here I got procedure in Main Form
procedure TfolderFrame.CreateFolder;
begin
newFolderDialog.Visible:=true;
end;
And here's new folder form
unit FolderDialog;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs,fileOperations, StdCtrls;
type
TnewFolderDialog = class(TForm)
edtName: TEdit;
lblName: TLabel;
btnOK: TButton;
btnCancel: TButton;
procedure btnOKClick(Sender: TObject);
procedure btnCancelClick(Sender: TObject);
procedure FormActivate(Sender: TObject);
private
{ Private declarations }
public
FolderName:String;
kindOfAction:char;
hasUpdated:Boolean;
end;
var
newFolderDialog: TnewFolderDialog;
implementation
{$R *.dfm}
procedure TnewFolderDialog.btnOKClick(Sender: TObject);
begin
FolderName:=edtName.Text;
if CreateDir(FolderName)
then begin
ShowMessage('New folder created!');
end
else begin
ShowMessage('Creation failed. Error : '+ IntToStr(GetLastError));
end;
newFolderDialog.edtName.Clear;
newFolderDialog.Close;
hasUpdated:=True;
end;
procedure TnewFolderDialog.btnCancelClick(Sender: TObject);
begin
newFolderDialog.edtName.Clear;
newFolderDialog.Close;
end;
procedure TnewFolderDialog.FormActivate(Sender: TObject);
begin
hasUpdated:=false;
end;
end.
The problem is - when TfolderFrame.CreateFolder; called it just make new folder form visible and then procedure ends. But I need to made some other thigs after folder will be created, something like Refresh or stuff.
I've been trying to do it like this:
procedure TfolderFrame.CreateFolder;
begin
newFolderDialog.Visible:=true;
while not (newFolderDialog.hasUpdated) do begin
if(newFolderDialog.hasUpdated) then
RefreshAllStuff;
end;
end;
But programm just stuck because of it.
How could I call Refresh procedure in Form1 only after confirming of folder creation in Form2?

Answer 1

Redesign your code to use TForm.ShowModal() instead, eg:
procedure TfolderFrame.CreateFolder;
begin
if newFolderDialog.ShowModal = mrOk then
RefreshAllStuff;
end;
procedure TnewFolderDialog.btnOKClick(Sender: TObject);
begin
FolderName := edtName.Text;
if CreateDir(FolderName) then
begin
ShowMessage('New folder created!');
ModalResult := mrOk;
end
else
ShowMessage('Creation failed. Error : '+ IntToStr(GetLastError));
end;
procedure TnewFolderDialog.btnCancelClick(Sender: TObject);
begin
ModalResult =: mrCancel;
end;
procedure TnewFolderDialog.FormShow(Sender: TObject);
begin
edtName.Clear;
end;