hidappdlg.cpp

USB v1.1 RTL and design specification

// HIDAppDlg.cpp : implementation file
//

#include "stdafx.h"
#include "HIDApp.h"
#include "HIDAppDlg.h"

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

extern HANDLE WINAPI OpenHID(USHORT VID, USHORT PID);
extern HANDLE WINAPI OpenHID(char *ProductString);
HANDLE hDevice;

HICON m_Red, m_Black;
HICON m_Press, m_Release;

unsigned char Key, Led;
char DataBuf[2];
char OldDataBuf[2];
DWORD BytesTxd, BytesRxd;
unsigned char CDigit, ODigit;

/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CHIDAppDlg dialog

CHIDAppDlg::CHIDAppDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CHIDAppDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CHIDAppDlg)
	m_Check1 = FALSE;
	m_Check2 = FALSE;
	m_Check3 = FALSE;
	m_Check4 = FALSE;
	m_Check5 = FALSE;
	m_Check6 = FALSE;
	m_Check7 = FALSE;
	m_Check8 = FALSE;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	m_Red = AfxGetApp()->LoadIcon(IDR_RED);
	m_Black = AfxGetApp()->LoadIcon(IDR_BLACK);
	m_Press = AfxGetApp()->LoadIcon(IDR_PRESS);
	m_Release = AfxGetApp()->LoadIcon(IDR_RELEASE);
}

void CHIDAppDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CHIDAppDlg)
	DDX_Check(pDX, IDC_CHECK1, m_Check1);
	DDX_Check(pDX, IDC_CHECK2, m_Check2);
	DDX_Check(pDX, IDC_CHECK3, m_Check3);
	DDX_Check(pDX, IDC_CHECK4, m_Check4);
	DDX_Check(pDX, IDC_CHECK5, m_Check5);
	DDX_Check(pDX, IDC_CHECK6, m_Check6);
	DDX_Check(pDX, IDC_CHECK7, m_Check7);
	DDX_Check(pDX, IDC_CHECK8, m_Check8);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CHIDAppDlg, CDialog)
	//{{AFX_MSG_MAP(CHIDAppDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_DESTROY()
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHIDAppDlg message handlers

BOOL CHIDAppDlg::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
	SetTimer(1, 20, NULL);
	hDevice = OpenHID(0x1234, 0x5678);
//	hDevice = OpenHID("Button Lights");
	if (hDevice == NULL) {
		MessageBox("Couldn't find the HID device!", "Error", MB_OK);
		exit(1);
	}
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CHIDAppDlg::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 CHIDAppDlg::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
	{
		CPaintDC dc(this);

		if (Led & 0x01)
			dc.DrawIcon(50, 20, m_Red);
		else
			dc.DrawIcon(50, 20, m_Black);
		if (Led & 0x02)
			dc.DrawIcon(100, 20, m_Red);
		else
			dc.DrawIcon(100, 20, m_Black);
		if (Led & 0x04)
			dc.DrawIcon(150, 20, m_Red);
		else
			dc.DrawIcon(150, 20, m_Black);
		if (Led & 0x08)
			dc.DrawIcon(200, 20, m_Red);
		else
			dc.DrawIcon(200, 20, m_Black);
		if (Led & 0x10)
			dc.DrawIcon(250, 20, m_Red);
		else
			dc.DrawIcon(250, 20, m_Black);
		if (Led & 0x20)
			dc.DrawIcon(300, 20, m_Red);
		else
			dc.DrawIcon(300, 20, m_Black);
		if (Led & 0x40)
			dc.DrawIcon(350, 20, m_Red);
		else
			dc.DrawIcon(350, 20, m_Black);
		if (Led & 0x80)
			dc.DrawIcon(400, 20, m_Red);
		else
			dc.DrawIcon(400, 20, m_Black);

		if (Key & 0x01)
			dc.DrawIcon(50, 70, m_Press);
		else
			dc.DrawIcon(50, 70, m_Release);
		if (Key & 0x02)
			dc.DrawIcon(100, 70, m_Press);
		else
			dc.DrawIcon(100, 70, m_Release);
		if (Key & 0x04)
			dc.DrawIcon(150, 70, m_Press);
		else
			dc.DrawIcon(150, 70, m_Release);
		if (Key & 0x08)
			dc.DrawIcon(200, 70, m_Press);
		else
			dc.DrawIcon(200, 70, m_Release);
		if (Key & 0x10)
			dc.DrawIcon(250, 70, m_Press);
		else
			dc.DrawIcon(250, 70, m_Release);
		if (Key & 0x20)
			dc.DrawIcon(300, 70, m_Press);
		else
			dc.DrawIcon(300, 70, m_Release);
		if (Key & 0x40)
			dc.DrawIcon(350, 70, m_Press);
		else
			dc.DrawIcon(350, 70, m_Release);
		if (Key & 0x80)
			dc.DrawIcon(400, 70, m_Press);
		else
			dc.DrawIcon(400, 70, m_Release);

		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CHIDAppDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}


void CHIDAppDlg::OnDestroy() 
{
	CDialog::OnDestroy();
	
	// TODO: Add your message handler code here
	KillTimer(1);
	CloseHandle(hDevice);
}

void CHIDAppDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	if (nIDEvent == 1)
	{
		UpdateData();
		CDigit = (m_Check8 << 7) | (m_Check7 << 6) | (m_Check6 << 5) | (m_Check5 << 4) | (m_Check4 << 3) | (m_Check3 << 2) | (m_Check2 << 1) | m_Check1;
		DataBuf[0] = 0x00;
		ReadFile(hDevice, &DataBuf, 2, &BytesTxd, NULL);
		if (BytesTxd != 0) {
			if ((DataBuf[1] != OldDataBuf[1]) || (CDigit != ODigit)) {
				Key = DataBuf[1];
				Led = Key ^ CDigit;
				OldDataBuf[1] = DataBuf[1];
				DataBuf[0] = 0x00;
				DataBuf[1] = Led;
				WriteFile(hDevice, &DataBuf, 2, &BytesRxd, NULL);
				Invalidate(FALSE);
			}
		}
		ODigit = CDigit;
	}

	CDialog::OnTimer(nIDEvent);
}