DLL库动态加载类

1、DLL库动态加载类/*# # DLLLOAD.H#*/#ifndef _DLL_LOAD_H_#define _DLL_LOAD_H_/= / class TDllModule/ Base class for dynamically loaded DLL's/=class TDllModule public:enum TErrorCode ERROR_OK = 0,ERROR_DLLNOTFOUND,ERROR_INVALIDEXPORT,ERROR_NOTCREATED;protected:int m_nErrorCode;CString m_strName;HINSTANCE m_

2、hHandle;public:TDllModule(LPCTSTR szName;virtual TDllModule(;virtual BOOL Create(void;virtual void Destroy(void;int GetErrorCode(void return m_nErrorCode; CString GetDLLName(void return m_strName; ;#endif/*# # End of file DLLLOAD.H#*/*# # DLLLOAD.CPP#*/#include"stdafx.h"#include"DllLo

3、ad.h"#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE = _FILE_;#endif/= / class TDllModule/=TDllModule:TDllModule(LPCTSTR szNamem_strName = szName;m_hHandle = NULL;m_nErrorCode = ERROR_NOTCREATED;TDllModule:TDllModule(Destroy(;/ Dynamically load a DLL/ Returns TRUE if loa

4、dedBOOL TDllModule:Create(voidm_hHandle = :LoadLibrary(m_strName;if (m_hHandle = NULL m_nErrorCode = ERROR_DLLNOTFOUND;return FALSE;m_nErrorCode = ERROR_OK;return TRUE;/ Unload the DLLvoid TDllModule:Destroy(voidif (m_hHandle :FreeLibrary(m_hHandle;m_hHandle = NULL;m_nErrorCode = ERROR_NOTCREATED;/*

5、# # End of file DLLLOAD.CPP#*/对话框实例:/ SampleDlg.h : header file/#if !defined(AFX_SAMPLEDLG_H_CDDAAEA6_B78B_11D3_8F9F_0080AD4311B1_INCLUDED_ #define AFX_SAMPLEDLG_H_CDDAAEA6_B78B_11D3_8F9F_0080AD4311B1_INCLUDED_#if _MSC_VER > 1000#pragma once#endif/ _MSC_VER > 1000/ / PSAPI wrapper/typedef BOOL

6、 (WINAPI *TFEnumProcesses(DWORD * lpidProcess, DWORD cb, DWORD * cbNeeded;typedef BOOL (WINAPI *TFEnumProcessModules(HANDLE hProcess, HMODULE *lphModule, DWORD cb, LPDWORD lpcbNeeded;typedef DWORD (WINAPI *TFGetModuleBaseName(HANDLE hProcess, HMODULE hModule, LPSTR lpBaseName, DWORD nSize;typedef DW

7、ORD (WINAPI *TFGetModuleFileNameEx(HANDLE hProcess, HMODULE hModule, LPSTR lpFilename, DWORD nSize;typedef BOOL (WINAPI *TFGetModuleInformation(HANDLE hProcess, HMODULE hModule, LPMODULEINFO lpmodinfo, DWORD cb;class TProcessStatusModule : public TDllModule private:TFEnumProcesses FEnumProcesses;TFE

8、numProcessModules FEnumProcessModules;TFGetModuleBaseName FGetModuleBaseName;TFGetModuleFileNameEx FGetModuleFileNameEx;TFGetModuleInformation FGetModuleInformation;private:void initAll(void;public:TProcessStatusModule(;virtual TProcessStatusModule(;virtual BOOL Create(void;virtual void Destroy(void

9、;BOOL EnumProcesses(DWORD * lpidProcess, DWORD cb, DWORD * cbNeeded;BOOL EnumProcessModules(HANDLE hProcess,HMODULE *lphModule,DWORD cb,LPDWORD lpcbNeeded; DWORD GetModuleBaseName(HANDLE hProcess,HMODULE hModule,LPSTR lpBaseName,DWORD nSize; DWORD GetModuleFileNameEx(HANDLE hProcess,HMODULE hModule,

10、LPSTR lpFilename,DWORD nSize; BOOL GetModuleInformation(HANDLE hProcess,HMODULE hModule,LPMODULEINFO lpmodinfo,DWORD cb;/ CSampleDlg dialogclass CSampleDlg : public CDialog/ Constructionpublic:CSampleDlg(CWnd* pParent = NULL; / standard constructor/ Dialog Data/AFX_DATA(CSampleDlgenum IDD = IDD_SAMP

11、LE_DIALOG ;CListCtrl m_List;/AFX_DATA/ ClassWizard generated virtual function overrides/AFX_VIRTUAL(CSampleDlgprotected:virtual void DoDataExchange(CDataExchange* pDX; / DDX/DDV support/AFX_VIRTUAL/ Implementationprotected:HICON m_hIcon;/ Generated message map functions/AFX_MSG(CSampleDlgvirtual BOO

12、L OnInitDialog(;afx_msg void OnPaint(;afx_msg HCURSOR OnQueryDragIcon(;afx_msg void OnEnum(; /按钮事件/AFX_MSGDECLARE_MESSAGE_MAP(public:;/AFX_INSERT_LOCATION/ Microsoft Visual C+ will insert additional declarations immediately before the previous line.#endif/ !defined(AFX_SAMPLEDLG_H_CDDAAEA6_B78B_11D3

13、_8F9F_0080AD4311B1_INCLUDED_/*# End of file SampleDlg.h#*/ SampleDlg.cpp : implementation file/#include"stdafx.h"#include"Sample.h"#include"SampleDlg.h"#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE = _FILE_;#endif/ PSAPI wrapper/TProcessStatusM

14、odule:TProcessStatusModule(:TDllModule(_T("PSAPI.DLL"initAll(;TProcessStatusModule:TProcessStatusModule(void TProcessStatusModule:initAll(voidFEnumProcesses = NULL;FEnumProcessModules = NULL;FGetModuleInformation = NULL;FGetModuleBaseName = NULL;FGetModuleFileNameEx = NULL;BOOL TProcessSta

15、tusModule:Create(voidif (TDllModule:Create( / DLL handle is valid (DLL is loadedFEnumProcesses = (TFEnumProcesses:GetProcAddress(m_hHandle,_T("EnumProcesses" FEnumProcessModules =(TFEnumProcessModules:GetProcAddress(m_hHandle,_T("EnumProcessModules"FGetModuleInformation =(TFGetMo

16、duleInformation:GetProcAddress(m_hHandle,_T("GetModuleInformation"#ifdef UNICODEFGetModuleBaseName =(TFGetModuleBaseName:GetProcAddress(m_hHandle,_T("GetModuleBaseNameW"FGetModuleFileNameEx =(TFGetModuleFileNameEx:GetProcAddress(m_hHandle,_T("GetModuleFileNameExW"#elseF

17、GetModuleBaseName =(TFGetModuleBaseName:GetProcAddress(m_hHandle,_T("GetModuleBaseNameA"FGetModuleFileNameEx =(TFGetModuleFileNameEx:GetProcAddress(m_hHandle,_T("GetModuleFileNameExA"#endif/ Can also check if all pointers to functions are different from NULL.return TRUE;return FA

18、LSE;void TProcessStatusModule:Destroy(voidTDllModule:Destroy(;initAll(;BOOL TProcessStatusModule:EnumProcesses(DWORD *lpidProcess, DWORD cb, DWORD *cbNeededASSERT(FEnumProcesses != NULL;if (FEnumProcessesreturn FEnumProcesses(lpidProcess,cb,cbNeeded;return FALSE;BOOL TProcessStatusModule:EnumProcess

19、Modules(HANDLE hProcess,HMODULE *lphModule,DWORD cb,LPDWORD lpcbNeeded ASSERT(FEnumProcessModules != NULL;if (FEnumProcessModulesreturn FEnumProcessModules(hProcess, lphModule, cb, lpcbNeeded;return FALSE;DWORD TProcessStatusModule:GetModuleBaseName(HANDLE hProcess,HMODULE hModule,LPSTR lpBaseName,D

20、WORD nSize ASSERT(FGetModuleBaseName != NULL;if (FGetModuleBaseNamereturn FGetModuleBaseName(hProcess, hModule, lpBaseName, nSize;return FALSE;DWORD TProcessStatusModule:GetModuleFileNameEx(HANDLE hProcess,HMODULE hModule,LPSTR lpFilename,DWORD nSize ASSERT(FGetModuleFileNameEx != NULL;if (FGetModul

21、eFileNameExreturn FGetModuleFileNameEx(hProcess, hModule, lpFilename, nSize;return FALSE;BOOL TProcessStatusModule:GetModuleInformation(HANDLE hProcess,HMODULE hModule,LPMODULEINFO lpmodinfo,DWORD cb ASSERT(FGetModuleInformation != NULL;if (FGetModuleInformationreturn FGetModuleInformation(hProcess,

22、 hModule, lpmodinfo, cb;return FALSE;/ / CSampleDlg dialogCSampleDlg:CSampleDlg(CWnd* pParent /*=NULL*/: CDialog(CSampleDlg:IDD, pParent/AFX_DATA_INIT(CSampleDlg/ NOTE: the ClassWizard will add member initialization here /AFX_DATA_INITm_hIcon = AfxGetApp(->LoadIcon(IDR_MAINFRAME;void CSampleDlg:D

23、oDataExchange(CDataExchange* pDXCDialog:DoDataExchange(pDX;/AFX_DATA_MAP(CSampleDlgDDX_Control(pDX, IDC_LIST, m_List;/AFX_DATA_MAPBEGIN_MESSAGE_MAP(CSampleDlg, CDialog/AFX_MSG_MAP(CSampleDlgON_WM_PAINT(ON_WM_QUERYDRAGICON(ON_BN_CLICKED(IDC_ENUM, OnEnum/AFX_MSG_MAPON_BN_CLICKED(IDOK, &CSampleDlg:

24、OnBnClickedOkEND_MESSAGE_MAP(/ / CSampleDlg message handlersBOOL CSampleDlg:OnInitDialog(CDialog:OnInitDialog(;SetIcon(m_hIcon, TRUE; / Set big iconSetIcon(m_hIcon, FALSE; / Set small icon/ TODO: Add extra initialization herem_List.InsertColumn(0, _T("Process ID", LVCFMT_LEFT, 60;m_List.In

25、sertColumn(1, _T("Process name", LVCFMT_LEFT, 400;return TRUE; / return TRUE unless you set the focus to a control/ 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

26、 for you by the framework.void CSampleDlg:OnPaint(if (IsIconic(CPaintDC dc(this; / device context for paintingSendMessage(WM_ICONERASEBKGND, (WPARAM dc.GetSafeHdc(, 0;/ Center icon in client rectangleint cxIcon = GetSystemMetrics(SM_CXICON;int cyIcon = GetSystemMetrics(SM_CYICON;CRect rect;GetClientRect(▭int x = (rect.Width( - cxIcon + 1 / 2;int y = (rect.Height( - cyIcon + 1 / 2;/ Draw the icondc.DrawIcon(x, y, m_hIcon;elseCDialog:OnPaint(;HCURSOR CSampleDlg:OnQueryDragIcon(return (HCURSOR m_hIcon;void CSampleDlg