dlltestdlg.cpp

《VC++ 编程技巧与示例 .rar》各个示例代码绝对可用

// DllTestDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DllTest.h"
#include "DllTestDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDllTestDlg dialog

CDllTestDlg::CDllTestDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDllTestDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDllTestDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CDllTestDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDllTestDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDllTestDlg, CDialog)
	//{{AFX_MSG_MAP(CDllTestDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_DLLC, OnDllc)
	ON_BN_CLICKED(IDC_DLLE, OnDlle)
	ON_BN_CLICKED(IDC_DLLR, OnDllr)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDllTestDlg message handlers

BOOL CDllTestDlg::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
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CDllTestDlg::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 CDllTestDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (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 to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CDllTestDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

//测试对C语言型动态连接库的调用：
void CDllTestDlg::OnDllc() 
{
	// TODO: Add your control notification handler code here
	    float fMin;
    	HINSTANCE hIn;
    //创建一个新的函数指针数据类型：
    	typedef float (MINTYPE)(float,float);
    	MINTYPE* pMin=0;
    //载入FindMin.dll动态连接库
    	VERIFY(hIn=::LoadLibrary("FindMin.dll"));
    //取得FindMin（）函数的地址
    	VERIFY(pMin=(MINTYPE*)::GetProcAddress((HMODULE)hIn,"FindMin"));
    //测试动态连接库的FindMin（）函数
    	float f1=2.0;
    	float f2=23.05;
    	fMin=(*pMin)(f1,f2);
    //展示测试结果
    	CString str;
    	str.Format("The minimum of %f and %f is %f",f1,f2,fMin);
    	AfxMessageBox(str);
    //卸载动态连接库
    	FreeLibrary(hIn);
}

void CDllTestDlg::OnDlle() 
{
	// TODO: Add your control notification handler code here
    m_DlleDlg.DoModal();
}

void CDllTestDlg::OnDllr() 
{
	// TODO: Add your control notification handler code here
	float x1,x2,maxx;
	x1=10;
	x2=100;
	//直接调用动态连接库函数
	maxx=FindMax(x1,x2);
	CString str;
	str.Format("The maximum of %f and %f is %f",x1,x2,maxx);
	MessageBox(str);
}