如题
用Query1->Parameters->Items[7]->LoadfromFile(ExtractFilePath ( ParamStr(0) )+"zp.bmp",ftBlob);存入后，读出来的图像是变形的。
ADO的方法：
C/C++ code:
//===========================================================================
// 读
TBlobField *pField = (TBlobField *)pQuery->FieldByName("Image");
TADOBlobStream *pMem = new TADOBlobStream(pField, bmRead);
pMem->Seek(0, sofromBeginning);
Graphics::TBitmap * pBitmap = new Graphics::TBitmap();
pBitmap->LoadfromStream(pMem);
Image1->Picture->Assign(pBitmap);
delete pBitmap;
delete pMem;
// 写
pQuery->Edit();
TBlobField *pField = (TBlobField *)pQuery->FieldByName("Image");
TADOBlobStream *pMem = new TADOBlobStream(pField, bmWrite);
pMem->Seek(0, sofromBeginning);
Graphics::TBitmap *pBitmap = new Graphics::TBitmap();
pBitmap->Assign(Image1->Picture->Graphic);
pBitmap->SaveToStream(pMem);
delete pBitmap;
delete pMem;
pQuery->Post();
用你的方法出现在“当前提供程序不支持从单一执行返回多个记录集”，怎么解决啊。源码如下：
Query1->Close();
Query1->SQL->Clear();
Query1->SQL->Text = "insert into BARAQYLIST (zznum,xm,xb,mz,csrq,sfzh,dz,zp,djrq) values (:p1,:p2,:p3,:p4,:p5,:p6,:p7,:p8,:p9)";
Query1->Activ
我用Access数据库做了一个图书数据库，里面有一个字段是ISBN，就是ISBN号，但是只的一总分图书写的ISBN号，有的没写，写的那一部分有的ISBN是重复的，能否用SQL语言把重复的过滤掉，但没写ISBN号的图书不能过滤掉，� ......
