用类处理子画面\BG.bmp ..............\cPlane.cls ..............\cSprtieMap.cls ..............\enemy.bmp ..............\Form1.frm ..............\Form1.frx ..............\GDInit.bas ..............\MSSCCPRJ.SCC ..............\类精灵.vbp ..............\类精灵.vbw 用类处理子画面