testdlg.cpp

通过VC调用MATLAB引擎的范例程序

// testDlg.cpp : implementation fil
//
#include "stdafx.h"
#include "test.h"
#include "testDlg.h"
#include "math.h"
#include "engine.h"   // matlab 头文件

//#include "EngineDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CTestDlg dialog

CTestDlg::CTestDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CTestDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CTestDlg)
		// 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 CTestDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTestDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTestDlg, CDialog)
	//{{AFX_MSG_MAP(CTestDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDOK, OnMATLABEngine)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTestDlg message handlers

BOOL CTestDlg::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 CTestDlg::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 CTestDlg::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 CTestDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}



void CTestDlg::OnMATLABEngine() 
{
	Engine *ep;    // TODO: Add extra validation here   引擎变量
	MessageBox ("单击确定按钮，Windows 正在准备启动MATLAB引擎！","MATLAB引擎",MB_OK|MB_ICONINFORMATION);
	
	if (!(ep=engOpen("\0"))) 
	{
		fprintf(stderr,"\n MATLAB 引擎启动失败！\n");
		MessageBox ("MATLAB引擎启动失败！","MATLAB引擎",MB_OK|MB_ICONERROR);
		exit(-1);
	}
	
	MessageBox ("单击“确定”按钮，隐藏MATLAB！","MATLAB引擎",MB_OK|MB_ICONINFORMATION);
	engSetVisible(ep,0);  // 隐藏MATLAB
	
	MessageBox ("单击确定按钮，系统重新显示MATLAB！","MATLAB引擎",MB_OK|MB_ICONINFORMATION);
	engSetVisible(ep,1);   // 重新启动MATLAB

	mxArray *T=NULL;
	double time[10] = {0.0,1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0};

	//生成矩阵

   	T = mxCreateDoudbleMatrix(1,10,mxREAL);
	memcpy((void*)mxGetPr(T),(void*)time,sizeof(time));
	
	//将矩阵变量写入MATLAB引擎的工作区
	engPutVariable(ep,"T",T);
	




	//通过MATLAB引擎执行MATLAB命令
	engEvalString(ep,"D=.5.*(-9.8).*T.^2;");
	engEvalString(ep,"plot(T,D);");
	engEvalString(ep,"title('Position vs. Time for a falling object');");
	engEvalString(ep,"xlabel('Time(seconds)');");
	engEvalString(ep,"ylabel('Position(meters)');");
	engEvalString(ep,"grid on;");
	//释放矩阵变量T占用的内存
	mxDestroyArray(T);
	MessageBox("通过例程，说明MATLAB的图形显示能力！","MATLAB引擎",MB_OK|MB_ICONINFORMATION);
	//画一朵花
	engEvalString(ep,"x=-8:0.5:8;");
	engEvalString(ep,"y=x;");
	engEvalString(ep,"[Y,X]=meshgrid(y,x);");
	engEvalString(ep,"R=sqrt(X.^2+Y.^2)+eps;");
	engEvalString(ep,"Z=2*sin(R)./R;");
	engEvalString(ep,"surf(X,Y,Z);");

	MessageBox("关闭MATLAB引擎，系统将推出MATLAB应用程序！","MATLAB引擎",MB_OK|MB_ICONINFORMATION);
	engClose(ep); //关闭引擎，退出

}