How to pass CMap as argument between the functions?

[mikert_2008]

Hi, I need to fill the CMap map and then Pass it to other function as argument. Is it possible? I am getting error while doing this. e.g CMap<cstring,>, vector >cMapPassArg; -- fill the CMap -- Call the function func(...,..,cMapPassArg) -- Called function func(...,...,CMap cMapPassArg); Mike

[Naveen]

mikert_2008 wrote:

I am getting error while doing this.

This is because there is no copy constructor for CMap. So you cannot pass a CMap object by value. How ever you can pass CMap object either as a pointer or reference. 1) As reference

func(...,..,cMapPassArg)
func(...,...,CMap**&** cMapPassArg);

2. As pointer

func(...,..,&cMapPassArg)
func(...,...,CMap***** cMapPassArg);

nave [OpenedFileFinder] [My Blog]

[Nishad S]

In this way...

typedef CMap<CString,LPCTSTR,int,int> MyMap;

void fun1(MyMap& map)
{
}

void fun2(MyMap* pMap)
{
}

void main()
{
MyMap map;
fun1( map );
fun2( &map );
}

Main point is that when passing template object, the function parameter of template should be of the same template types.

- ns ami -

[mikert_2008]

It's working. Thanks. Mike

[Nishad S]

You are welcome... :)

- ns ami -

[mikert_2008]

How can CMap Argument be pass to function of two different class? e.g class A { typedef CMap <..,..,..,..>cMyMapA; void func(cMyMapA cMapAgr); } class B { typedef CMap<..,..,..,..>cMyMapB; A objA; objA.func(cMyMapB cMyMapBArg) ????? } Thanks:- Rajiv

[Nishad S]

You need to declare the typedef available for both classes. It can be in a common header file. For Eg,

typedef CMap<.....> MyMap;

class A
{
void fun(MyMap& map)
{
// use map
}
}

class B
{
A m_a;
MyMap m_map;
void call()
{
m_a.fun(m_map);
}
}

Hope it is clear... :)

- ns ami -