How to create a dynamic array using MFC

Question

I'm learning Visual C++ using MFC and I need to create a dynamic int array without worry about memory location. The array size will be increasing during the run time.

int myArray[5]; // I want to change this as a dynamic array
int counter = 0;
int currentValue;
... more Code

void CScribbleView::OnLButtonUp(UINT, CPoint point) 
{
   myArray[counter] = currentValue;
   counter++;
   currentValue = 0;
... more Code
}

There are many ways. There are collection classes provided that you can use and you can also dynamically create an array of any size using new[] and delete[]. See this tutorial. But I suggest using an existing array collection or std::vector. — Andrew Truckle
– Andrew Truckle, Commented Mar 5, 2017 at 11:18
Yes, std:vector is definitely a better alternative to CArray. — Jabberwocky
– Jabberwocky, Commented Mar 5, 2017 at 12:24
@MichaelWalz: The code in question is from the Scribble sample program. This program implements serialization support. When doing MFC serialization, CArray is usually a better choice, as it comes with serialization support built in. — IInspectable
– IInspectable, Commented Mar 5, 2017 at 20:09
@IInspectable: Yes, you are right. It's a sample Scribble program. CArray is the better solution to make a dynamic array, because I'm using MFC. — Pilar Rodriguez
– Pilar Rodriguez, Commented Mar 6, 2017 at 8:06

Jesus Peralta · Accepted Answer · 2017-03-05 11:12:12Z

3

I think what you are looking for is CArray Class, the changes in your code will be something like:

CArray<int, int> myArray;
int currentValue;
... more Code

void CScribbleView::OnLButtonUp(UINT, CPoint point) 
{
   myArray.Add(currentValue);
   currentValue = 0;

... more Code
}

answered Mar 5, 2017 at 11:12

Jesus Peralta

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