求解释为毛报错E:\JAVAWORK\WinMain\WinMain.cpp(4) :error C2146:synta

求解释为毛报错
E:JAVAWORKWinMainWinMain.cpp(4) :error C2146:syntax error :missing ';' before identifier 'CLASSBACK'
E:JAVAWORKWinMainWinMain.cpp(4) :error C2501:'LRESURT' :missing storage-class or type specifiers
E:JAVAWORKWinMainWinMain.cpp(4) :fatal error C1004:unexpected end of file found