unit BlobFld;

interface

uses
SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls,
Forms, Dialogs, StdCtrls, Buttons, DBTables, DB, ExtCtrls, DBCtrls,
Grids, DBGrids;

type
TFrmBlobFld = class(TForm)
BtnWrite: TBitBtn;
Table1: TTable;
DataSource1: TDataSource;
DBNavigator1: TDBNavigator;
LbxDisplayBlob: TListBox;
Table1pubid: TIntegerField;
Table1comments: TMemoField;
Table1UpdateTime: TTimeField;
Table1Real1: TFloatField;
Table1Real2: TFloatField;
Table1Real3: TFloatField;
Table1Curr1: TCurrencyField;
Table1Blobs: TBlobField;
Table1Bytes: TBytesField;
CbxRead: TCheckBox;
procedure BtnWriteClick(Sender: TObject);
procedure DataSource1DataChange(Sender: TObject; Field: TField);
procedure FormShow(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
private
{ Private-Deklarationen }
public
{ Public-Deklarationen }
end;

var
FrmBlobFld: TFrmBlobFld;

implementation

{$R *.DFM}

type
ADouble = array[1..12] of double;
PADouble = ^ADouble;

procedure TFrmBlobFld.BtnWriteClick(Sender: TObject);
var
i: integer;
myBlob: TBlobStream;
v: longint;
begin
Table1.Edit;

myBlob := TBlobStream.Create(Table1Blobs, bmReadWrite);
try
v := ComponentCount;
myBlob.Write(v, sizeof(longint));

for i := 0 to ComponentCount - 1 do
begin
v := Components[i].ComponentIndex;
myBlob.Write(v, sizeof(longint));
end;
finally
Table1.Post;
myBlob.Free;
end;
end;

procedure TFrmBlobFld.DataSource1DataChange(Sender: TObject; Field: TField);
var
i: integer;
myBlob: TBlobStream;
t: longint;
v: longint;
begin
if CbxRead.Checked then
begin
LbxDisplayBlob.Clear;

myBlob := TBlobStream.Create(Table1Blobs, bmRead);
try
myBlob.Read(t, sizeof(longint));
LbxDisplayBlob.Items.Add(IntToStr(t));

for i := 0 to t - 1 do
begin
myBlob.Read(v, sizeof(longint));
LbxDisplayBlob.Items.Add(IntToStr(v));
end;
finally
myBlob.Free;
end;
end;
end;

procedure TFrmBlobFld.FormShow(Sender: TObject);
begin
Table1.Open;
end;

procedure TFrmBlobFld.FormClose(Sender: TObject;
var Action: TCloseAction);
begin
Table1.Close;
end;

end.

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ExtCtrls;

type
TForm1 = class(TForm)
Button1: TButton;
Image1: TImage;
Timer1: TTimer;
foto: TListBox;
procedure Button1Click(Sender: TObject);
procedure Timer1Timer(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1; i:word;

implementation

uses ShellAPI, ShlObj;// Нужны для работы с диалогом выбора
{$R *.dfm}

procedure FillBMPFileList(Folder: string; sl: TStrings);// процедура добавления файлов в список
var Rec : TSearchRec;
begin
sl.Clear;
if SysUtils.FindFirst(Folder + '*.bmp', faAnyFile, Rec) = 0 then
try
repeat
sl.Add(Folder+Rec.Name);
until SysUtils.FindNext(Rec) <> 0;
finally
SysUtils.FindClose(Rec);
end;
end;

function BrowseDialog(const Title: string; const Flag: integer): string;// вывод диалога выбора файлов
var
lpItemID : PItemIDList;
BrowseInfo : TBrowseInfo;
DisplayName : array[0..MAX_PATH] of char;
TempPath : array[0..MAX_PATH] of char;
begin
Result:='';
FillChar(BrowseInfo, sizeof(TBrowseInfo), #0);
with BrowseInfo do begin
hwndOwner := form1.Handle;
pszDisplayName := @DisplayName;
lpszTitle := PChar(Title);
ulFlags := Flag;
end;
lpItemID := SHBrowseForFolder(BrowseInfo);
if lpItemId <> nil then begin
SHGetPathFromIDList(lpItemID, TempPath);
Result := IncludeTrailingBackslash(TempPath);
GlobalFreePtr(lpItemID);
end;
end;

procedure TForm1.Button1Click(Sender: TObject);// запуск ункции вывода файлов
var fs : string;
begin
fs := BrowseDialog('Выберите папку с BMP файлами', BIF_RETURNONLYFSDIRS);
if fs = '' then Exit;
FillBMPFileList(fs, foto.Items);
timer1.Enabled:=true
end;

procedure TForm1.Timer1Timer(Sender: TObject);// вывод картинок на image
begin
if i= foto.Count-1 then exit;
image1.Picture.LoadFromFile(foto.Items.strings[i]);
inc(i);
end;

end