TCanvas *csBuf = new TCanvas;
Graphics::TBitmap *Source = new Graphics::TBitmap();
Graphics::TBitmap *Bp = new Graphics::TBitmap();
 Byte *ptr1,*ptr2;
 int R,G,B;
 int Gray;
 int i,j;
Source->Width=Panel1->Width;
Source->Height=Panel1->Height;
HDC hDC = GetDC(Panel1->Handle);
csBuf->Handle = hDC;
Source->Canvas->CopyRect( Rect(0,0,Source->Width,Source->Height),
csBuf,Rect(0,0,Panel1->Width,Panel1->Height));
Image1->Picture->Assign(Source);
ReleaseDC(0,hDC);
delete csBuf;
delete Source;
Panel1->Visible=false;
capDriverDisconnect (hWndC);
//-----------------------------------------
 Bp->Assign(Source);
 for(j=0;jHeight;j  )
 {
  ptr1 = (Byte *)Bp->ScanLine[j];
  ptr2 = (Byte *)Bp->ScanLine[j];
  for(i=0;iWidth;i  )
  {
   B=ptr1[i*3];
   G=ptr1[i*3 1];
   R=ptr1[i*3 2];
   Gray=0.299*R 0.587*G 0.114*B;
   ptr2[i*3]=ptr2[i*3 1]=ptr2[i*3 2]=Gray;
  }
 }
 Image2->Picture->Assign(Bp);
 delete Bp;

  Bp->Assign(Source);
  Bp->PixelFormat=pf24bit;

引言: 可以了 可是為什麼？？ 謝謝版大 發表人 - leonard 於 2004/06/10 16:50:07