Copy Constructor needed

[MarcoMB]

i need to implement something similar...

CSpLine* CSdicap10Doc::AddSpLine(CArray<POINT,POINT>ControlPoints, CArray<POINT,POINT>Curvepoints)
{

CSpLine* pSpLine = new CSpLine(m_ControlPoints,m_CurvePoints);
m_oaSpLines.Add(pSpLine);

return pSpLine;
}

where ControlPoints and CurvePoints are

CArray <POINT,POINT> m_CurvePoints;
CArray <POINT,POINT> m_ControlPoints;

and m_oaSpLines is
CObArray m_ospLines;
The constructor is...

CSpLine::CSpLine(CArray<POINT,POINT>ControlPoints,CArray<POINT,POINT>CurvePoints)
{
m_ControlPoints = ControlPoints;
m_CurvePoints = CurvePoints;
}
The errors regards copy constructor and operator overloading...
error C2664: 'CSpLine::CSpLine' : cannot convert parameter 1 from 'class CArray<struct tagPOINT,struct tagPOINT>' to 'class CArray<struct tagPOINT,struct ta
gPOINT>'
No copy constructor available for class 'CArray<struct tagPOINT,struct tagPOINT>'
error C2582: 'CArray<struct tagPOINT,struct tagPOINT>' : 'operator =' function is unavailable

Can i solve the problem?

 

[uolj]

CArray doesn't have built-in copyability because that can be expensive. If you want to copy a CArray inside your copy constructor use the Copy function.

http://msdn2.microsoft.com/en-gb/library/8ffe4w0t(VS.80).aspx

(don't click the link, copy and paste the address including the (VS.80).aspx part).

m_ControlPoints.Copy(ControlPoints);

 

[MarcoMB]

thanks...using Copy method the compiler don't give me the error
No copy constructor available for class 'CArray<struct tagPOINT,struct tagPOINT>'
error C2582: 'CArray<struct tagPOINT,struct tagPOINT>' : 'operator =' function is unavailable

but with the Add method continue to say
error C2664: 'CSpLine::CSpLine' : cannot convert parameter 1 from 'class CArray<struct tagPOINT,struct tagPOINT>' to 'class CArray<struct tagPOINT,struct ta
gPOINT>'

how can i resolve? How have to modify my contructor that now is...
CSpLine::CSpLine(CArray<POINT,POINT>ControlPoints,CArray<POINT,POINT>CurvePoints)
{
m_ControlPoints.Copy(ControlPoints);
m_CurvePoints.Copy(CurvePoints);
}

 

[uolj]

You should be passing the CArrays by const reference so the arguments aren't copied when being sent to the function.

 

[MarcoMB]

thanks for help...it works...you think it's ok for serialize this type of CObArray(CObArray of CSpLine object made by CArray <POINT,POINT>)?

 

[MarcoMB]

it seems not possible serializing CArray<POINT,POINT>...
void CSpLine::Serialize(CArchive &ar)
{
CObject::Serialize(ar);
if (ar.IsStoring())
ar<<m_ControlPoints<<m_CurvePoints;

if (ar.IsLoading())
ar>>m_ControlPoints>>m_CurvePoints;
}
what am i doing wrong?

 

[uolj]

I'm not that familiar with your problem, did you search for information about serializing CArrays?

I found this which may help you, again copy the address, clicking the link won't work.

http://msdn2.microsoft.com/en-us/library/6s70zdb8(VS.80).aspx

 

[MarcoMB]

i think to use serialization with CArray i must use hekper function SerializeElements...do u think so?