var
bmp: TBitmap;
jpg: TJPEGImage;
begin
bmp := TBitmap.Create;
jpg := TJPEGImage.Create;
try
bmp.LoadFromFile(bmpfilename);
jpg.assign(bmp);
jpg.SaveToFile(jpgfilename); //保存成jpg后,就随便你了。
finally
bmp.free;
jpg.free;
end;
end;
bmp: TBitmap;
jpg: TJPEGImage;
begin
bmp := TBitmap.Create;
jpg := TJPEGImage.Create;
try
bmp.LoadFromFile(bmpfilename);
jpg.assign(bmp);
jpg.SaveToFile(jpgfilename); //保存成jpg后,就随便你了。
finally
bmp.free;
jpg.free;
end;
end;
stream : TMemoryStream;
begin
Stream :=TMemoryStream.Create;
Stream.LoadFilename('c:\1.jpg');
Table1.append;
(Table1.Fieldbyname('字段') as TBlobFiled).loadStream(Stream);
Table1.post;
Stream.Free;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
MyJPEG : TJPEGImage;
MS: TMemoryStream;
begin
MyJPEG := TJPEGImage.Create;
try
with MyJPEG do
begin
Assign(Image.Picture.Graphic);
MS:=TMemoryStream.create;
SaveToStream(MS);
MS.Position:=0;
Table1.Edit;
TBlobField(Table1.FieldbyName('Image')).LoadFromStream(MS);
Table1.Post;
messagebox(getactivewindow(),'图像保存完毕!','保存',mb_ok);
end;
finally
MyJPEG.Free;
end;
end;将图像从Microsoft Access数据库中取出并显示出来:
procedure TForm1.Button1Click(Sender: TObject);
var tempstream:TStringStream;
tempjpeg:TJPEGImage;
begin
try
tempstream:=TStringStream.Create(' ');
tempjpeg:=TJPEGImage.Create;
TBlobField(Query1.FieldByName('Image')).SaveToStream(tempstream);
tempstream.Position:=0;
tempjpeg.LoadFromStream(tempstream);
DBImage1.Picture.Bitmap.Assign(tempjpeg);
finally
tempstream.Free;
tempjpeg.Free;
end;
end;