[Dev-C++] Strange linking problem (?)

[Hielke <hie...@he...>]

Hi all,

During the compilation of the following constructor I get a =
"'GetInstance' undeclared" error. However I included an headerfile which =
includes the appropriate header (windows.h) to use that function.

// topwindow1.cc
#include "windowwrappers.ih"

TopWindow::TopWindow(WindowClass &winClass, int resId)
:
  Window(winClass)
{
  d_style =3D WS_OVERLAPPEDWINDOW;
  HINSTANCE hInst =3D GetInstance();
  d_windowName =3D ResourceString(hInst, resId);
}

// windowwrappers.ih
#include "window.h"
#include "topwindow.h"

#include "../winexception.h"
#include "../resourcestring.h"

#include <windows.h>


I don't get why it won't compile. Especially because I use the very same =
function in a classmember of another class:

// setdefaults.cc
#include "classwrappers.ih"

void WindowClass::SetDefaults()
{
  /* <some code> */

  d_class.lpszClassName =3D GetName();=20
  d_class.hInstance =3D GetInstance();=20

  /* <some more code> */
}

// classwrappers.ih
#include "simplewindowclass.h"
#include "windowclass.h"
#include "topwindowclass.h"

#include "../resourcestring.h"
#include "../winexception.h"

#include <windows.h>
#include <string>

Note that I use a nonstandard extension for the headerfiles (following =
the "internal header" approach where classmembers include a common =
headerfile (which in turn includes the header containing =
classdeclaration)). This might be the cause of linker problems when =
using Dev-C++ but I already tried projectfile options. Currently the =
*.ih files are neither included during compilation nor during =
linkingprocess.

Thanks in advance. Hope somebody sees what I'm doing wrong.=20

Regards,
    Hielke
    zw...@he...