幸福快樂的淺藍色小風之安全堡壘

private
{ Private declarations }
fOldClientHeight: Integer;
procedure WMNCRButtonDown(var Msg: TWMNCRButtonDown) ; message WM_NCRBUTTONDOWN;
procedure TForm1.WMNCRButtonDown(var Msg: TWMNCRButtonDown);
var
h : integer;
begin
if (Msg.HitTest = HTCAPTION) then
begin
if (ClientHeight = 0) then
begin
for h := 0 to fOldClientHeight do ClientHeight := h;
Application.ProcessMessages;
end
else
begin
fOldClientHeight := ClientHeight;
for h := fOldClientHeight downto 0 do ClientHeight := h;
Application.ProcessMessages;
end;
end;
end;

type THackDBGrid = class(TDBGrid);
...
procedure TForm1.DBGrid1MouseMove
(Sender: TObject; Shift: TShiftState; X, Y: Integer);
var
gc: TGridCoord;
begin
gc:= DBGrid1.MouseCoord(x, y);
if (gc.X > 0) AND (gc.Y > 0) then
begin
DBGrid1.DataSource.DataSet.MoveBy
(gc.Y - THackDBGrid(DBGrid1).Row);
end;
end;