[ITK] Naming conflict ?

[Dženan Zukić]

Hi Tim,

ITK indirectly includes windows headers, and your Arc class suffers a name
clash with

WINGDIAPI BOOL  WINAPI *Arc*( _In_ HDC hdc, _In_ int x1, _In_ int y1, _In_
int x2, _In_ int y2, _In_ int x3, _In_ int y3, _In_ int x4, _In_ int y4);

in c:\Program Files (x86)\Windows Kits\8.1\Include\um\wingdi.h, line 3612.
If your declarations are enclosed in a namespace ...

namespace Tim
{
    /* Forward declarations of Node and Arc classes since they are
interdependant */
    class Node;
    class Arc;
    ...
}

... the file compiles.

We are switching to discourse <https://discourse.itk.org/>, so please make
future posts there.

Regards,
Dženan

On Tue, Nov 21, 2017 at 5:36 AM, Timothee Evain <tevain at telecom-paristech.fr
> wrote:

> Hi Dženan!
>
> Sure, here you are :
> error C2061: syntax error : identifier 'Arc'    27
> error C2061: syntax error : identifier 'Arc'    31
> error C2143: syntax error : missing ';' before '*'      30
> error C2143: syntax error : missing ';' before '*'      49
> error C4430: missing type specifier - int assumed. Note: C++ does not
> support default-int       30
> error C4430: missing type specifier - int assumed. Note: C++ does not
> support default-int       49
>
> given with the following code (I haven't included the definitions has they
> are useless to reproduce the bug).
> Comment out the #include <itkImage.h> and everything is good.
>
> ////////////////////////////////////////////////////////////
> ////////////////
> #include <string>
> #include <itkImage.h>
>
>    /* Forward declarations of Node and Arc classes since they are
> interdependant */
>    class Node;
>    class Arc;
>
>    /* CLASS : Node
>    Class that defines a node or summit for the graph
>    */
>    class Node
>    {
>    public:
>       Node();
>       Node(unsigned int NodeID);
>       Node(unsigned int NodeID, int NodeLabel);
>       Node(unsigned int NodeID, int NodeLabel, std::string NodeName);
>       virtual ~Node();
>
>       //Add an outgoing arc
> (27)  void AddArc(Arc* OutwardArc);
>
>       //Get/set the first outward arc
> (30)  Arc* GetFirstOutwardArc();
> (31)  void SetFirstOutwardArc(Arc* FirstArc);
>
>       //Get/set the node ID
>       unsigned int GetNodeID();
>       void SetNodeID(unsigned int ID);
>
>       //Get the number of arc that exit this node
>       unsigned int GetArcCount();
>
>       //Get/set the node name
>       std::string GetNodeName();
>       void SetNodeName(std::string InputName);
>
>       //Get/set the node label
>       float GetNodeLabel();
>       void SetNodeLabel(float InputLabel);
>
>    protected:
> (49)  Arc* m_FirstOutwardArc;
>       unsigned int m_ArcCount;
>       unsigned int m_NodeID;
>       std::string m_NodeName;
>       float m_NodeLabel;
>    };
>
>    /* CLASS : Arc
>    Defines a directionnal edge for graphs
>    Each arc strictly have a starting and ending node
>    */
>    class Arc
>    {
>    public:
>       Arc();
>       Arc(Node* StartingNode, Node* EndingNode);
>       virtual ~Arc();
>
>       //Get/set the starting node
>       Node* GetStartNode();
>       void SetStartNode(Node* StartingNode);
>
>       //Get/set the ending node
>       Node* GetEndNode();
>       void SetEndNode(Node* EndingNode);
>
>       //Get/set the next arc originating from the same node
>       virtual Arc* GetNextArc();
>       virtual void SetNextArc(Arc* NextArc);
>
>    protected:
>       Node* m_StartNode;
>       Node* m_EndNode;
>
>    private:
>       Arc* m_NextArcFromSameNode;
>
>    };
>
> Tim
>
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