"bitmap image is not valid"

[luistsousa]

Hello

I pretend to have a database with a blob field ( image_field) to save bmp images,and to convert this bmp pictures to a jpeg pictures in database. The problem is that appear a error message "bitmap image is not valid".
How can i correct this problem? The code is in down.

Many thanks



if (OpenPictureDialog1->Execute()){

std::auto_ptr<Graphics::TBitmap> bitmap(new Graphics::TBitmap);
bitmap->LoadFromFile(OpenPictureDialog1->FileName);
std::auto_ptr<TJPEGImage> jpeg(new TJPEGImage);
jpeg->Assign(bitmap.get());
std::auto_ptr<TMemoryStream> stream (new TMemoryStream);
jpeg->SaveToStream(stream.get());
stream->Position = 0;
DataModule1->Table1->Append();
DataModule1->Table1image_field ->LoadFromStream(stream.get());
DataModule1->Table1->Post();
}

 

[BTecho]

Hi

You can try something like

DataModule1->Table1->Append();
((TBlobField *)DataModule1->Table1->FieldByName(&quot;image_field&quot)->LoadFromFile(OpenPictureDialog1->FileName);
DataModule1->Table1->Post;

or if it's a persistant field, like in your case then try

DataModule1->Table1->Append();
DataModule1->Table1image_field->LoadFromFile(OpenPictureDialog1->FileName);
DataModule1->Table1->Append();

That should help