VB编程实现元素拖动模块代码\ClsEvents.cls ..........................\FrmTest.frm ..........................\FrmTest.frx ..........................\FrmTest2.frm ..........................\MSSCCPRJ.SCC ..........................\m_API.bas ..........................\m_CtrlDrag.bas ..........................\PrjCtrlDrag.vbp ..........................\PrjCtrlDrag.vbw VB编程实现元素拖动模块代码