teststringdriverdlg.cpp

Wince上一个简单流接口驱动的示例

// TestStringDriverDlg.cpp : implementation file
//

#include "stdafx.h"
#include "TestStringDriver.h"
#include "TestStringDriverDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CTestStringDriverDlg dialog

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

BEGIN_MESSAGE_MAP(CTestStringDriverDlg, CDialog)
	//{{AFX_MSG_MAP(CTestStringDriverDlg)
	ON_BN_CLICKED(IDC_OPEN, OnOpen)
	ON_BN_CLICKED(IDC_CLOSE, OnClose)
	ON_BN_CLICKED(IDC_READ, OnRead)
	ON_BN_CLICKED(IDC_WRITE, OnWrite)
	ON_BN_CLICKED(IDC_IOCONTROL, OnIocontrol)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTestStringDriverDlg message handlers

BOOL CTestStringDriverDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// 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
	
	CenterWindow(GetDesktopWindow());	// center to the hpc screen

	// TODO: Add extra initialization here
	hStr=INVALID_HANDLE_VALUE;
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}



void CTestStringDriverDlg::OnOpen() 
{
	//打开String驱动
	hStr=CreateFile(TEXT("STR1:"),GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,0);

	if(hStr==INVALID_HANDLE_VALUE)
	{
		::MessageBox(NULL,_T("无法打开STR1:"),_T("String驱动测试程序"),MB_OK);
	}
	else
	{
		::MessageBox(NULL,_T("打开STR1:成功"),_T("String驱动测试程序"),MB_OK);
	}

}

void CTestStringDriverDlg::OnClose() 
{
	if(hStr!=INVALID_HANDLE_VALUE)
	{
		CloseHandle(hStr);
		AfxMessageBox(L"关闭STR1成功！");
		hStr=INVALID_HANDLE_VALUE;
	}
	else
	{
		AfxMessageBox(L"未打开！");
	}
}

void CTestStringDriverDlg::OnRead() 
{
	char b[100];
	memset(b,0,100*sizeof(char));

	if(hStr==INVALID_HANDLE_VALUE)
	{
		AfxMessageBox(L"未打开！");
		return;
	}
	
	DWORD dwBytesread;
	ReadFile(hStr,b,100,&dwBytesread,NULL);

	if(dwBytesread>0)
	{
		AfxMessageBox(CString(b));
	}

}

void CTestStringDriverDlg::OnWrite() 
{
	char a[100]="This is a test string!";
	if(hStr==INVALID_HANDLE_VALUE)
	{
		AfxMessageBox(L"未打开！");
		return;
	}
	
	DWORD dwByteswritten;
	WriteFile(hStr,a,22,&dwByteswritten,NULL);

	if(dwByteswritten>0)
	{
		CString inf;
		inf.Format(L"写入%d字节.",dwByteswritten);
		AfxMessageBox(inf);
	}
	
}

void CTestStringDriverDlg::OnIocontrol() 
{
	DeviceIoControl(hStr,0,NULL,NULL,NULL,NULL,NULL,NULL);
}