Look at TfrDesigner component. It has necessary events: OnLoadReport and OnSaveReport. Here is a small example:
procedure TForm1.frDesigner1LoadReport(Report: TfrReport; var ReportName: String; var Opened: Boolean);
begin
with MyOpenDialog do
begin
Opened := ShowModal = mrOk;
if Opened then
begin
Report.LoadFromBlobField(...);
ReportName := ...;
end;
end;
end;
procedure TForm1.frDesigner1SaveReport(Report: TfrReport; var ReportName: String; SaveAs: Boolean; var Saved: Boolean);
begin
if SaveAs then
with MySaveDialog do
begin
Saved := ShowModal = mrOk;
if Saved then
begin
Report.SaveToBlobField(...);
ReportName := ...;
end;
end
else
Report.SaveToBlobField(...);
end;