This is in the main "example dlg.cpp" file:

```
void CHelixV3Dlg::OnBnClickedCancel()
{
   CEdit* editbox = (CEdit*)GetDlgItem(IDC_EDIT1); 
  //works fine, defined as: *CWnd GetDlgItem(int nID); in this file
}

```

This is test.cpp source file

```
void test()
{
   CEdit* editbox = (CEdit*)GetDlgItem(IDC_EDIT1);
   //does not work at all, seems to be a winAPI function instead of MFC...
   //defined as: HWND __stdcall GetDlgItem(HWND hDlg, int nIDDlgItem);
}

```

both source files are in the same project, use the same headers, but test()'s GetDlgItem is obviously a Win32 API function, which does not work in MFC...
How could I get GetDlgItem() working in the test.cpp file?