分数 分子分母

• 分子分母

  int y;
  Image1->Canvas->Brush->Color = clYellow;
  TRect rc;
  rc.left =0;
  rc.top = 0;
  rc.right= Image1->Width;
  rc.Bottom = Image1->Height;
  Image1->Canvas->FillRect(rc);

  Image1->Canvas->Pen->Color = clRed;
  Image1->Canvas->Font->Color = clBlue;
  Image1->Canvas->Font->Size =  17;
 
  Image1->Canvas->TextOutA(1,1,"   5");
  y = 26;
  Image1->Canvas->MoveTo(1,y);
  Image1->Canvas->LineTo(80,y);
 
  Image1->Canvas->TextOutA(1,y+2," 100");
  Image1->Transparent = true;

 

• 上标

  //Éϱê
  String a="10",b="2";
  int tw,th;
  TRect rc;
  rc.left =0;
  rc.top = 0;

  rc.right= Image1->Width;
  rc.Bottom = Image1->Height;
  Image1->Canvas->FillRect(rc);

  Image1->Canvas->Font->Size = cbbfs->Text.ToIntDef(10);
  tw = Image1->Canvas->TextWidth(a);
  th = Image1->Canvas->TextHeight(a);
  Image1->Canvas->TextOutA(0,th/4,a);

  Image1->Canvas->Font->Size = Image1->Canvas->Font->Size/2;
  Image1->Canvas->TextOutA(tw,0,b);
  Image1->Transparent = true;