将示例应用程序转换为DLL
VC++ Trasforming a sample application into a DLL
我有一个项目，我收到了一个示例代码，这是一个exe，基本上加载到一个对话框两个activeX控件。
我需要做一个DLL来使用控件的功能。
最好的策略是什么?我认为我的DLL需要创建窗口的实例。当窗口建立时，得到activeX控件的指针，使事情发生。
做到这一点的最佳策略是什么?或者这是否可能?
App Code:StartUp.h# pragma一旦
#ifndef __AFXWIN_H__
#error "include 'stdafx.h' before including this file for PCH"
#endif
#include "resource.h" // main symbols
// CStartUpApp:
// See StartUp.cpp for the implementation of this class
//
class CStartUpApp : public CWinApp
{
public:
CStartUpApp();
// Overrides
public:
virtual BOOL InitInstance();
// Implementation
DECLARE_MESSAGE_MAP()
};
extern CStartUpApp theApp;
StartUpDlg.h
#pragma once
#include "xnssdkdevicectrl.h"
#include "xnssdkwindowctrl.h"
// CStartUpDlg dialog
class CStartUpDlg : public CDialog
{
// Construction
public:
CStartUpDlg(CWnd* pParent = NULL); // standard constructor
// Dialog Data
enum { IDD = IDD_STARTUP_DIALOG };
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
// Implementation
protected:
HICON m_hIcon;
// Generated message map functions
virtual BOOL OnInitDialog();
afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
DECLARE_MESSAGE_MAP()
private:
// [ XNS ACTIVEX HELP ]
// -----------------------------------------------------------------------
// XNS Device control and Window control variables
// -----------------------------------------------------------------------
CXnssdkwindowctrl m_ctrlXnsWindow; // XnsWindow control
CXnssdkdevicectrl m_ctrlXnsDevice; // XnsDevice control
public:
afx_msg void OnBnClickedOk();
};
StartUp.cpp
#include "stdafx.h"
#include "StartUp.h"
#include "StartUpDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
// CStartUpApp
BEGIN_MESSAGE_MAP(CStartUpApp, CWinApp)
ON_COMMAND(ID_HELP, &CWinApp::OnHelp)
END_MESSAGE_MAP()
// CStartUpApp construction
CStartUpApp::CStartUpApp()
{
// TODO: add construction code here,
// Place all significant initialization in InitInstance
}
// The one and only CStartUpApp object
CStartUpApp theApp;
// CStartUpApp initialization
BOOL CStartUpApp::InitInstance()
{
// InitCommonControlsEx() is required on Windows XP if an application
// manifest specifies use of ComCtl32.dll version 6 or later to enable
// visual styles. Otherwise, any window creation will fail.
INITCOMMONCONTROLSEX InitCtrls;
InitCtrls.dwSize = sizeof(InitCtrls);
// Set this to include all the common control classes you want to use
// in your application.
InitCtrls.dwICC = ICC_WIN95_CLASSES;
InitCommonControlsEx(&InitCtrls);
CWinApp::InitInstance();
AfxEnableControlContainer();
// Standard initialization
// If you are not using these features and wish to reduce the size
// of your final executable, you should remove from the following
// the specific initialization routines you do not need
// Change the registry key under which our settings are stored
// TODO: You should modify this string to be something appropriate
// such as the name of your company or organization
SetRegistryKey(_T("Local AppWizard-Generated Applications"));
CStartUpDlg dlg;
m_pMainWnd = &dlg;
INT_PTR nResponse = dlg.DoModal();
if (nResponse == IDOK)
{
// TODO: Place code here to handle when the dialog is
// dismissed with OK
}
else if (nResponse == IDCANCEL)
{
// TODO: Place code here to handle when the dialog is
// dismissed with Cancel
}
// Since the dialog has been closed, return FALSE so that we exit the
// application, rather than start the application's message pump.
return FALSE;
}
StartUpDlg.cpp
#include "stdafx.h"
#include "StartUp.h"
#include "StartUpDlg.h"
// [ XNS ACTIVEX HELP ]
// -----------------------------------------------------------------------
// This files are installed in {$SDK path}sample_codeinclude
// You should include this files
// -----------------------------------------------------------------------
#include "XnsCommon.h"
#include "XnsDeviceInterface.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
// Macro for OutputDebugString()
#define DBG_LOG(...) do{
CString strMessage = _T("");
strMessage.AppendFormat(_T("(%S:%d)"), __FUNCTION__, __LINE__);
strMessage.AppendFormat(__VA_ARGS__);
OutputDebugString(strMessage);
}while(0);
// Macro for AfxMessageBox()
#define ERROR_BOX(...) do{
CString strMessage = _T("");
strMessage.Format(__VA_ARGS__);
AfxMessageBox(strMessage);
}while(0);
// CAboutDlg dialog used for App About
class CAboutDlg : public CDialog
{
public:
CAboutDlg();
// Dialog Data
enum { IDD = IDD_ABOUTBOX };
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
// Implementation
protected:
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()
// CStartUpDlg dialog
CStartUpDlg::CStartUpDlg(CWnd* pParent /*=NULL*/)
: CDialog(CStartUpDlg::IDD, pParent)
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CStartUpDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
DDX_Control(pDX, IDC_XNSSDKDEVICECTRL, m_ctrlXnsDevice);
DDX_Control(pDX, IDC_XNSSDKWINDOWCTRL, m_ctrlXnsWindow);
}
BEGIN_MESSAGE_MAP(CStartUpDlg, CDialog)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
//}}AFX_MSG_MAP
ON_BN_CLICKED(IDOK, &CStartUpDlg::OnBnClickedOk)
END_MESSAGE_MAP()
// CStartUpDlg message handlers
BOOL CStartUpDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// Add "About..." menu item to system menu.
// IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);
CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}
// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
// TODO: Add extra initialization here
// [ XNS ACTIVEX HELP ]
// -----------------------------------------------------------------------
// Initializes the DLL files.
// For this, XnsActiveX library requires config.xml, device.xml,
// and xns.xml files and the DLL file list should be mentioned
// in Xns.xml file. The path of the DLL file can not exceed 512 bytes
// in length. The XnsActiveX library searches for xns.xml using
// XnsSDKDevice.ocx installed in "{$SDK path}Config" folder.
// -----------------------------------------------------------------------
long nRet = m_ctrlXnsDevice.Initialize();
if (nRet != ERR_SUCCESS)
{
DBG_LOG(_T("XnsSdkDevice:: Initialize() fail: errno=[%d]n"), nRet);
}
// [ XNS ACTIVEX HELP ]
// -----------------------------------------------------------------------
// Initializes the XnsSdkWindow control.
// Namely, this will specify the window handle in order to display
// images on the screen.
// -----------------------------------------------------------------------
nRet = m_ctrlXnsWindow.Initialize(NULL, NULL);
DBG_LOG(_T("XnsSdkWindow:: Initialize() return=[%d](%s)n"),
nRet, m_ctrlXnsDevice.GetErrorString(nRet));
return TRUE; // return TRUE unless you set the focus to a control
}
void CStartUpDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}
// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.
void CStartUpDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);
// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;
// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}
// The system calls this function to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CStartUpDlg::OnQueryDragIcon()
{
return static_cast<HCURSOR>(m_hIcon);
}
void CStartUpDlg::OnBnClickedOk()
{
// TODO: Add your control notification handler code here
OnOK();
}
my DLL头文件
__declspec(dllexport) long init();//initilize app with activeX controls in window
__declspec(dllexport) long getDlgInstance();//get dlg handle to be able to call activeX
__declspec(dllexport) long connect(long handle);//do stuff
应该不难…在没有看到代码的情况下(我怎么可能看到?)，我假设您定义了将activeX控件的指针返回给调用者的函数。根据您之前提出的问题判断，您知道如何创建DLL。在新的DLL项目中获取所需的所有代码，只导出要从宿主应用程序访问的函数，然后就完成了
您的DLL代码将看起来像
__declspec (dllexport) CStartUpDlg *ShowStartUpDlg()
{ AFX_MANAGE_STATE(AfxGetStaticModuleState()); // in case the dialog is in the DLL's .rc file
// alternate to the above line: AfxSetResourceHandle(hInstance); // hInstance is what you get in the DLL's InitInstance()
CStartUpDlg *pDlg = new CStartUpDlg();
if (pDlg == NULL)
return NULL;
if (!pDlg->Create(IDD_STARTUP_DLG))
return NULL;
pDlg->ShowWindow(SW_SHOW);
return pDlg; // make sure you close the dialog and delete pDlg at the end of your program
}
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