#include<commctrl.h>
 
class CImageList
{
  public:
         CImageList();
         ~CImageList();
 
         void Add();
  private:
          HIMAGELIST m_hImageList;                 
};

#include<windows.h>
#include<commctrl.h>
#include "CImageList.h"
 
CImageList::CImageList()
{
 m_hImageList=ImageList_Create(32, 32, ILC_COLOR32, 0, 15);//returns NULL if the fuction fails
 
 if(!m_hImageList) MessageBox(NULL,"failed to create m_hImageList","CImageList constructor error",MB_ICONERROR);
 else MessageBox(NULL,"m_hImageList created sucessfully :)","CImageList constructor ",MB_OK);
}
 
CImageList::~CImageList()
{
}
 
void CImageList::Add()
{
//currently empty but for adding icons to imagelist
}

#include "CImageList.h"
CImageList myImageList;
...
...
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)                  /* handle the messages */
    {
        case WM_CREATE:
             myImageList.Add();//HERE IS THE ERROR
             break;
        ....
        ....
     }
}