if(near == far)行.它也发生在第75行：

(if near == NULL || far == NULL)

bool Camera::SetClippingPlanes( float near,float far )
{
    if (near == far)  //Line 70(First Error)
    { 
        MessageBox(NULL,L"ERROR: The far and near clipping planes cannot be equal!",L"Error",MB_OK | MB_ICONERROR);
        return false;
    }
    else
    {
        if (near == NULL || far == NULL)  //Line 75(Second Error)
        {
            MessageBox(NULL,L"ERROR: Near and/or Far clipping planes are null!",MB_OK | MB_ICONERROR);
            return false;
        }
        else
        {
            nearPane = near;
            farPane = far;
            return true;
        }
    }
}

我有其他函数以相同的方式使用==运算符,但它们不会收到错误.如果您有任何建议,谢谢…