www.pudn.com > port-vc.zip > testDlg.cpp

// testDlg.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "test.h" 
#include "testDlg.h" 
#include  
#include  
#include  
#include  
#include "DirectIOLib.h" 
 
typedef struct {short int pitch;short int duration;} NOTE; 
NOTE notes[] = {{14, 500}, {16, 500}, {12, 500}, {0, 500}, {7, 1000}}; 
void setfreq(int hz); 
void playnote(NOTE note); 
///////////////////////////////////////////////////////////////////////////// 
// 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_PAINT() 
	ON_WM_QUERYDRAGICON() 
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1) 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CTestDlg message handlers 
 
BOOL CTestDlg::OnInitDialog() 
{CDialog::OnInitDialog(); 
 SetIcon(m_hIcon, TRUE);			// Set big icon 
 SetIcon(m_hIcon, FALSE);		// Set small icon 
 if (openDirectIO(NULL)==-1)  
  AfxMessageBox("Failed to Open Direct IO !"); 
 return TRUE; 
 
} 
 
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::OnButton1()  
{int i; 
 for(i=0; i < sizeof(notes)/sizeof(int); ++i) 
		playnote(notes[i]); 
 
} 
 
 
//==================================================== 
void setfreq(int hz) 
{hz = 1193180 / hz; _outp(0x43, 0xb6); 
 _outp(0x42, hz);   _outp(0x42, hz >> 8); 
} 
 
void playnote(NOTE note) 
{_outp(0x61, _inp(0x61) | 0x03);	 
 setfreq((int)(400 * pow(2, note.pitch / 12.0))); 
 Sleep(note.duration); 
 _outp(0x61, _inp(0x61) & ~0x03);	 
}