视图切换问题

Compiling... ControlTree.cpp e:\newpaintgraph\newpaintgraph\newpaintgraphview.h(23) : error C2143: syntax error : missing ';' before '*' e:\newpaintgraph\newpaintgraph\newpaintgraphview.h(23) : error C2501: 'CNewPaintGraphDoc' : missing storage-class or type specifiers e:\newpaintgraph\newpaintgraph\newpaintgraphview.h(23) : error C2501: 'GetDocument' : missing storage-class or type specifiers Error executing cl.exe. NewPaintGraph.exe - 3 error(s), 0 warning(s)