用c++做的一个桌面捕抓游戏

Invalidate(); UpdateWindow(); CDC *pdc=GetDC(); if(iFillSolidRect(x,y,50,50,RGB(255,255,255)); else { if(a%2==0) x=(x+a)%(rc.Width()-50); else x=(x-a)%(rc.Width()-50); if(b%2==0) y=(y+b)%(rc.Height()-50); else y=(y-b)%(rc.Height()-50); if(x<0) x=0; if(yFillSolidRect(x,y,50,50,RGB(255,255,255)); else pdc->FillSolidRect(x,y,50,50,RGB(255,0,0)); } } else { KillTimer(1); record[t]=5000-i*50; MessageBox("游戏超时"); CString str; str.Format("%d",record[t]); MessageBox(str); } i++; }