各位,想请教个很简单的问题

robin0928

C:\Documents and Settings\嘉琦帐单\桌面\game\main.cpp(139) : error C2664: 'DDReLoadBitmap' : cannot convert parameter 1 from 'struct IDirectDrawSurface7 *' to 'struct IDirectDrawSurface *'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
请问这个问题怎么解决啊？？

cqtml

没引用DX开发包，DDReLoadBitmap是DX开发包中的函数。