Bitmap Image is not valid
专家:
老呆进行图片保存后用DBImage显示时出现如下提示:
Bitmap Image is not valid
程序是这样写的:
TDBImage *p=dynamic_cast <TDBImage*>(Panel3->Controls[i]) ;
Query1->Edit();
pPictStream=new TBlobStream((TBlobField*)Query1->FieldByName(p->DataField),bmWrite);
pPictStream->Seek(0,soFromBeginning);
Graphics::TBitmap * pBitmap=new Graphics::TBitmap();
pBitmap->Assign(p->Picture->Graphic);
pBitmap->SaveToStream(pPictStream);
delete pBitmap;
delete pPictStream;
Query1->Post();
请问这是什么原因?如何解决?