{ctor}不是<baseclass> </baseclass>的成员

时间:2013-05-09 11:59:20

标签: c++ inheritance constructor

我有一个名为GLObject的基类,带有以下标题:

class GLObject{
    public:
        GLObject(float width = 0.0, float height = 0.0, float depth = 0.0, 
                 float xPos= 0.0, float yPos = 0.0, float zPos =0.0, 
                 float xRot =0.0, float yRot = 0.0, float zRot = 0.0);
    ... //Other methods etc
};

和CPP:

GLObject::GLObject(float width, float height, float depth, 
                    float xPos, float yPos, float zPos, 
                    float xRot, float yRot, float zRot){
    this->xPos = xPos;
    this->yPos = yPos;
    this->zPos = zPos;
    this->xRot = xRot;
    this->yRot = yRot;
    this->zRot = zRot;
    this->width = width;
    this->height = height;
    this->depth = depth;
}

接下来我有一个派生类: 部首:

class GLOColPiramid : public GLObject
{
public:
    GLOColPiramid(float width, float height, float depth, float xPos = 0.0, float yPos = 0.0, float zPos = 0.0, float xRot = 0.0, float yRot = 0.0, float zRot = 0.0);
    ...
};

cpp文件

GLOColPiramid::GLOColPiramid(float width, float height, float depth, float xPos, float yPos, float zPos, float xRot, float yRot, float zRot) : GLObject::GLObject(width, height, depth, xPos,yPos,zPos,xRot,yRot,zRot)
{

}

这给了我一个错误:

  

glocolpiramid.cpp:4:错误:C2039:'{ctor}':不属于   'GLObject'

为什么?

我正在使用Qt 4.8.4和MSVC2010 32位编译器

2 个答案:

答案 0 :(得分:5)

尝试从声明中的GLObject::中删除GLObject::GLObject

.cpp文件中包含GLOColPiramid的实现:

GLOColPiramid::GLOColPiramid( .... ) : GLObject::GLObject( .... )
                                       ^^^^^^^^^^

它在C ++中是合法的,但测试它,也许MSVC2010有问题。

答案 1 :(得分:1)

从派生类构造函数调用它时,不应使用BaseClassName::BaseClassName(...)语法显式引用基类构造函数 - 这就是编译器所抱怨的内容。

相反,只需使用基类名称并传递参数:

GLOColPiramid::GLOColPiramid(float width, float height, float depth, float xPos, float yPos, float zPos, float xRot, float yRot, float zRot) : GLObject(width, height, depth, xPos,yPos,zPos,xRot,yRot,zRot)
{

}