1>e:\作业\c语言\测试\consoleapplication1\consoleapplication1\源.cpp(22): error C2275: “vp”: 将此类型用作表达式非法 1>e:\作业\c语言\测试\consoleapplication1\consoleapplication1\源.cpp(16): note: 参见“vp”的声明 1>e:\作业\c语言\测试\consoleapplication1\consoleapplication1\源.cpp(22): error C3861: “getviewsettings”: 找不到标识符 1>e:\作业\c语言\测试\consoleapplication1\consoleapplication1\源.cpp(23): error C2027: 使用了未定义类型“linetodemo::viewporttype” 1>e:\作业\c语言\测试\consolea...