void __fastcall TSDIAppForm::Timer1Timer(TObject *Sender) { Image1->Canvas->Pen->Color=clWhite; Image1->Canvas->Ellipse(s1-10,s2-10,s1+10,s2+10) ; s1=s1+3*i1; s2=s2+6*i2; if (s1>Image1->Width-10) i1=i1*(-1); if(s2>Image1->Height-10) i2=i2*(-1); if (s1<10) i1=i1*(-1); if(s2<10) i2=i2*(-1); Image1->Canvas->Pen->Color=rand()%4000000000; Image1->Canvas->Ellipse(s1-10,s2-10,s1+10,s2+10) ; } 21