how create CWnd and use it in Qt

Hi: every one
i'm want use crystal report in qt,i find Qt/MFC Migration Framework ,and test example.
i proble is
i have a wrap class from crystal report control,this is deriver from CWnd
how can i complie it with Qt Application.

Code:

---

//////////////////////////
//h
#ifndef CRVIEWER1_H
#define CRVIEWER1_H
 
#include "stdafx.h"
 
class CCrviewer1 : public CWnd
{
protected:
	DECLARE_DYNCREATE(CCrviewer1)
public:
	............
//
 
};
#endif
////////////////////////////////////////
//cpp
 
//#include "stdafx.h"
#include "crviewer1.h"
 
/////////////////////////////////////////////////////////////////////////////
// CCrviewer1
 
IMPLEMENT_DYNCREATE(CCrviewer1, CWnd)
 
///////////////////////////////////////////////////////
//MyCtrl.h
#ifndef MYCTRL_H
#define MYCTRL_H
#import "C:\\Program Files\\Common Files\\Crystal Decisions\\2.0\\bin\\craxddrt9.dll" no_namespace
#include "crviewer1.h"
#include <qwinhost.h>
#include <QtGui>
 
class HostWindow : public QWinHost
{
    Q_OBJECT
public:
    HostWindow(QWidget *parent = 0, Qt::WFlags f = 0)
	: QWinHost(parent, f)
    {
        setFocusPolicy(Qt::StrongFocus);
    }
 
    HWND createWindow(HWND parent, HINSTANCE instance)
    {
	  [SIZE="6"] //how can i create CCrviewer1???[/SIZE]
        return 0;
    }
 
signals:
    void message(const QString &msg, int timeout);
 
public slots:
    void returnPressed()
    {
        QMessageBox::information(topLevelWidget(), "Message from Qt", "Return pressed in QLineEdit!");
    }
public:
     CCrviewer1* m_pCRViewer1;
    IApplicationPtr m_Application;
     IReportPtr m_Report;
 
protected:
 
};
#endif

---

then i compile the application,i get this info
c:\Program Files\Microsoft Visual Studio 9.0\VC\atlmfc\include\afxv_w32.h(16) : fatal error C1189: #error : WINDOWS.H already included. MFC apps must not #include <windows.h>

i adjest include head sequece ,the complie is ok ,but i get some warning
1>LINK : warning LNK4098: default libraries “mfc90d.lib” conflicts with other libraries；please use /NODEFAULTLIB:library
1>LINK : warning LNK4098: default libraries “mfc90d.lib” conflicts with other libraries；please use /NODEFAULTLIB:library

this i run the program, but the main entry is to AfxWinMain, is not my Qt Application
main()!!



i want to know how can i use CWnd in Qt

thanks every much!

i tried this ,it worked

i set compiler project->property->linker->Advanced->entry
i set entry to main (this is my Qt application's entry), then rebuild,
it ok,and run it ok!

but i did't understand how Qt application link to mfc

someone can explain for this?

Code:

---

#ifndef MYCTRL_H
#define MYCTRL_H
#include "crviewer1.h"
#import "C:\\Program Files\\Common Files\\Crystal Decisions\\2.0\\bin\\craxddrt9.dll" no_namespace
 
#include <qwinhost.h>
#include <QtGui>
 
 
 
class HostWindow : public QWinHost
{
    Q_OBJECT
public:
    HostWindow(QWidget *parent = 0, Qt::WFlags f = 0)
	: QWinHost(parent, f)
    {
        setFocusPolicy(Qt::StrongFocus);
    }
	~HostWindow()
	{
        if(m_pCRViewer1)
		{
			m_pCRViewer1->DestroyWindow();
			delete m_pCRViewer1;
		}
	}
 
    HWND createWindow(HWND parent, HINSTANCE instance)
    {
	   CString nn("hello");
 
	   CWnd* cwnd=CWnd::FromHandle(parent);
	   CRect rect;
	   cwnd->GetClientRect(&rect);
 
	   DWORD nStyle=cwnd->GetStyle();
 
	   AfxEnableControlContainer();
	   m_pCRViewer1=new CCrviewer1();
	   m_pCRViewer1->Create((LPCTSTR)nn, WS_CHILD | WS_VISIBLE , rect, cwnd, 10001 ); 
        m_Application.CreateInstance (__uuidof(Application));
//获取m_Report变量
//staff.rpt为通过向导建立的报表文件，数据库采用SQL Server 7.0
   m_Report =m_Application->OpenReport ("World Sales Report.rpt");
  //设置报表标题
    m_Report->put_ReportTitle (_bstr_t("Title"));
 
	 m_pCRViewer1->put_ReportSource(m_Report);
	 m_pCRViewer1->put_DisplayToolbar (TRUE);
	 m_pCRViewer1->put_DisplayGroupTree (FALSE);
	  m_pCRViewer1->put_DisplayBorder (FALSE);
	  //刷新数据
	  m_pCRViewer1->Refresh ();
	  //显示报表内容
	  m_pCRViewer1->ViewReport();
	   return m_pCRViewer1->m_hWnd;
    }
 
signals:
    void message(const QString &msg, int timeout);
 
public slots:
    void returnPressed()
    {
        QMessageBox::information(topLevelWidget(), "Message from Qt", "Return pressed in QLineEdit!");
    }
public:
	 CCrviewer1* m_pCRViewer1;
	 IApplicationPtr m_Application;
     IReportPtr m_Report;
 
protected:
	/*void resizeEvent(QResizeEvent *e)
	{
		QWinHost::resizeEvent(e);
 
		if (m_pCRViewer1)
			m_pCRViewer1->MoveWindow(0,0,width(),height());
	}*/
 
};
 
#endif

---

this is lastest code,it worked !
but i have other problem , How can i use MFC class dirct in Qt, and do not to reset main enty? and My Usage is correct ?

Code:

---

#ifndef MYCTRL_H
#define MYCTRL_H
#include "crviewer1.h"
#import "C:\\Program Files\\Common Files\\Crystal Decisions\\2.0\\bin\\craxddrt9.dll" no_namespace
 
#include <qwinhost.h>
#include <QtGui>
 
 
 
class HostWindow : public QWinHost
{
    Q_OBJECT
public:
    HostWindow(QWidget *parent = 0, Qt::WFlags f = 0)
	: QWinHost(parent, f)
    {
        setFocusPolicy(Qt::StrongFocus);
    }
	~HostWindow()
	{
        if(m_pCRViewer1)
		{
			m_pCRViewer1->DestroyWindow();
			delete m_pCRViewer1;
		}
	}
 
    HWND createWindow(HWND parent, HINSTANCE instance)
    {
	   CString nn("hello");
 
	   CWnd* cwnd=CWnd::FromHandle(parent);
	   CRect rect;
	   cwnd->GetClientRect(&rect);
 
	   DWORD nStyle=cwnd->GetStyle();
 
	   AfxEnableControlContainer();
	   m_pCRViewer1=new CCrviewer1();
	   m_pCRViewer1->Create((LPCTSTR)nn, WS_CHILD | WS_VISIBLE , rect, cwnd, 10001 ); 
        m_Application.CreateInstance (__uuidof(Application));
//get m_Report
//
   m_Report =m_Application->OpenReport ("World Sales Report.rpt");
  //set report title
    m_Report->put_ReportTitle (_bstr_t("Title"));
 
	 m_pCRViewer1->put_ReportSource(m_Report);
	 m_pCRViewer1->put_DisplayToolbar (TRUE);
	 m_pCRViewer1->put_DisplayGroupTree (FALSE);
	  m_pCRViewer1->put_DisplayBorder (FALSE);
	  //
	  m_pCRViewer1->Refresh ();
	  //
	  m_pCRViewer1->ViewReport();
	   return m_pCRViewer1->m_hWnd;
    }
 
signals:
    void message(const QString &msg, int timeout);
 
public slots:
    void returnPressed()
    {
        QMessageBox::information(topLevelWidget(), "Message from Qt", "Return pressed in QLineEdit!");
    }
public:
	 CCrviewer1* m_pCRViewer1;
	 IApplicationPtr m_Application;
     IReportPtr m_Report;
 
protected:
	/*void resizeEvent(QResizeEvent *e)
	{
		QWinHost::resizeEvent(e);
 
		if (m_pCRViewer1)
			m_pCRViewer1->MoveWindow(0,0,width(),height());
	}*/
 
};
 
#endif

---

this is lastest code,it worked !
but i have other problem , How can i use MFC class dirct in Qt, and do not to reset main enty? and My Usage is correct ?

i tried more, i set Ignore defualt libary,mfc90d.lib;mfcs90d.lib, then build run

it worked ,i do not set main entry:D:D:D

I am facing the same problem with you,
can you give me a detailed explain for me?
I am also want to use CWnd as a QT QWidget without change the entrypoint from main to AfxWinMain.