[Mingw-users] Problem building dll

[Vincent M. <vin...@ne...>]

Hello,
I'm trying to create a dll for nt4.0 using
wxwindows and cross-compiling.
I've searched the archive and found some docs, but
I can't solved the problem.
I can't call any functions of the library
wxwindows, I've reduced the code but a simple call
like :
  iRet = wxMessageBox("Quit program?", "Confirm",
wxYES_NO | wxCANCEL,NULL);
hang my dll.
Any hellp would be very apprecied.

Here is the code


#define DLLIMPORT __declspec (dllexport)

#include "wx/wxprec.h"
#include "wx/event.h"
#include "wx/app.h"
#include "wx/msw/private.h"
#include <wx/wx.h>
#include <wx/utils.h>
#include <wx/image.h>

class MyApp : public wxApp
{
    public:
        virtual bool OnInit();
        virtual bool Show(const wxString &);
};

bool MyApp::OnInit()
{
  wxFrame * frame = new wxFrame(NULL, -1,
"A",wxPoint(150,50),wxSize(640,480));
  frame->Show(TRUE);
  SetTopWindow(frame);
  return TRUE;
}

bool  MyApp::Show(const wxString& text)
{
  return TRUE;
}

wxApp* wxCreateApp()
{
   return new MyApp;
}

MyApp& wxGetApp()
{
  return *(MyApp *)wxTheApp;
}

wxAppInitializer wxTheAppInitializer(
(wxAppInitializerFunction) wxCreateApp );

extern "C"
int WINAPI DllEntryPoint(HANDLE hModule, DWORD
fdwReason, LPVOID lpReserved)
{
    wxWindow * topWindow;
    switch (fdwReason)
    {
        case DLL_PROCESS_ATTACH:

   wxhInstance = (HINSTANCE) hModule;
   wxApp::Initialize();
   wxTheApp = (* wxApp::GetInitializerFunction())
();
   wxTheApp->argc = 0;
   wxTheApp->argv = NULL;
   wxTheApp->OnInitGui();
   wxTheApp->OnInit();
   topWindow = wxTheApp->GetTopWindow();
          break;
        case DLL_PROCESS_DETACH:
        default:
            break;
    }
    return TRUE;
}

DLLIMPORT int Fonction(char *parent, char *szUser,
char *szDatjour)
{
  int iRet = 0;
  wxBell(); // ok the system beep
//If I comment the next code, I've no problem 
  iRet = wxMessageBox("Quit program?", "Confirm",
wxYES_NO | wxCANCEL,NULL);// this code hang the
dll
  MessageBox(NULL, szUser,szDatjour,1); //ok I've
a dailog box
  return iRet;
}