onscreenkeyboarddlg.cpp

这是个不错的源程序

// COnscreenKeyboardDlg.cpp : implementation file
//

#include "stdafx.h"
#include "OnscreenKeyboard.h"
#include "OnscreenKeyboardDlg.h"
#include <math.h>

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


#define TIMER_ID 101	//定时器ID


//定义特殊系统键的键值
#define TAB 0x02		
#define CAPSLOCK 0x03
#define SHIFT 0x04
#define CTRL 0x05
#define BSPACE 0x06
#define ENTER 0x07
#define ALT 0x08
#define WINDOW 0x9
#define LEFT 0x0A
#define RIGHT 0x0B
#define UP 0x0C
#define DOWN 0x0D
#define ESC 0x0E
#define PUP 0x0F
#define PDN 0x10
#define HOME 0x11
#define END 0x12
#define INS 0x13
#define DEL 0x14
#define WWW 0x15
/////////////////////////////////////////////////////////////////////////////
// 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()


/////////////////////////////////////////////////////////////////////////////
// COnscreenKeyboardDlg dialog

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

BEGIN_MESSAGE_MAP(COnscreenKeyboardDlg, CDialog)
	//{{AFX_MSG_MAP(COnscreenKeyboardDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONDBLCLK()
	ON_WM_RBUTTONDBLCLK()
	ON_WM_RBUTTONDOWN()
	ON_WM_RBUTTONUP()
	ON_WM_MOUSEWHEEL()
	ON_WM_LBUTTONUP()
	ON_WM_SIZE()
	ON_WM_SHOWWINDOW()
	ON_WM_TIMER()
	ON_WM_DESTROY()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// COnscreenKeyboardDlg message handlers




BOOL COnscreenKeyboardDlg::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
	

	
	//将所有键加到链表中保存起来
	AddKey(0x00,0x00,0); //signal row change
	AddKey(0x00,ESC,10);
	for(int fnkey = 0x70; fnkey < 0x7C; fnkey++)
	{
		AddKey(0x00,fnkey & 0xFF,10);
	}
	AddKey(0x00,INS,14);
	AddKey(0x00,DEL,-10);

	//第一行的键
	//改变键盘行的标志
	AddKey(0x00,0x00,1); //signal row change
	AddKey('`','~',10);
	AddKey('1','!',10);
	AddKey('2','@',10);
	AddKey('3','#',10);
	AddKey('4','$',10);
	AddKey('5','%',10);
	AddKey('6','^',10);
	AddKey('7','&',10);
	AddKey('8','*',10);
	AddKey('9','(',10);
	AddKey('0',')',10);
	AddKey('-','_',10);
	AddKey('=','+',10);
	AddKey(0x00,BSPACE,14); //backspace
	AddKey(0x00,PUP,-12);

	//第二行的键
	//改变键盘行的标志
	AddKey(0x00,0x00,2); //signal row change
	AddKey(0x00,TAB,14); //tab
	AddKey('q','Q',10);
	AddKey('w','W',10);
	AddKey('e','E',10);
	AddKey('r','R',10);
	AddKey('t','T',10);
	AddKey('y','Y',10);
	AddKey('u','U',10);
	AddKey('i','I',10);
	AddKey('o','O',10);
	AddKey('p','P',10);
	AddKey('[','{',10);
	AddKey(']','}',10);
	AddKey('\\','|',10);
	AddKey(0x00,PDN,-12);

	//第三行的键
	//改变键盘行的标志
	AddKey(0x00,0x00,3); //signal row change
	AddKey(0x00,CAPSLOCK,18); //caps lock
	AddKey('a','A',10);
	AddKey('s','S',10);
	AddKey('d','D',10);
	AddKey('f','F',10);
	AddKey('g','G',10);
	AddKey('h','H',10);
	AddKey('j','J',10);
	AddKey('k','K',10);
	AddKey('l','L',10);
	AddKey(';',':',10);
	AddKey('\'','\"',10);
	AddKey(0x00,ENTER,16); //enter
	AddKey(0x00,HOME,-10);

	//第四行的键
	//改变键盘行的标志
	AddKey(0x00,0x00,4); //signal row change
	AddKey(0x00,SHIFT,22); //shift
	AddKey('z','Z',10);
	AddKey('x','X',10);
	AddKey('c','C',10);
	AddKey('v','V',10);
	AddKey('b','B',10);
	AddKey('n','N',10);
	AddKey('m','M',10);
	AddKey(',','<',10);
	AddKey('.','>',10);
	AddKey('/','?',10);
	AddKey(0x00,SHIFT,22); //shift
	AddKey(0x00,END,-10);

	//第五行的键

	//改变键盘行的标志
	AddKey(0x00,0x00,5); 
	AddKey(0x00,CTRL,12); //ctrl
	AddKey(0x00,WINDOW,12); //window
	AddKey(0x00,ALT,12); //alt
	AddKey(' ',' ',60);
	AddKey(0x00,LEFT,12); //left
	AddKey(0x00,UP,12); //up
	AddKey(0x00,DOWN,12); //down
	AddKey(0x00,RIGHT,12); //right
	AddKey(0x00,WWW,-10); //http://WWW

	//获得键宽和键高
	CalcWidthHeight();

	//打开定时器
	SetTimer(TIMER_ID,250,NULL);

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

//计算键的宽度和高度
void COnscreenKeyboardDlg::CalcWidthHeight()
{
	pKeyWidth = 0;
	pKeyHeight = 0;
	KEYDEF * key;
	POSITION pos = cKeys.GetHeadPosition();
	long totalWidth = 0;
	long longest = 0;
	long rows = 0;
	while(pos)
	{
		key = cKeys.GetNext(pos);
		//是换行的标志键
		if((key->cNormal == 0x00) && (key->cShifted == 0x00))
		{
			//增加行数
			rows++;
			if(totalWidth > longest)
			{
				//获得总长最长的行
				longest = totalWidth;
			}
			totalWidth = 0;
		}
		//正确的键
		else
		{
			//计算每行键的总长度
			totalWidth += abs(key->cWidth);
		}
	}
	CRect rect;
	GetClientRect(rect);
	pKeyHeight = rect.Height() / rows;
	pKeyWidth = (int)(((double)rect.Width()) / ((((double)(longest)) / 10)));
}

//增加一个键，保存起来
void COnscreenKeyboardDlg::AddKey(
	char pNormal,
	char pShifted,
	int pWidth)
{
	KEYDEF * key = new KEYDEF;
	key->cNormal = pNormal;
	key->cShifted = pShifted;
	key->cWidth = pWidth;
	cKeys.AddTail(key);
}

void COnscreenKeyboardDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

//画一个键
void COnscreenKeyboardDlg::DrawKey(CDC * dc, CRect & rc, KEYDEF * key, BOOL cHilight)
{
	//不是高亮度显示，设置颜色
	if(!cHilight)
	{
		rc.DeflateRect(1,1);
		dc->FillSolidRect(rc,GetSysColor(COLOR_3DFACE));
		dc->Draw3dRect(rc,GetSysColor(COLOR_3DSHADOW),GetSysColor(COLOR_3DDKSHADOW));
		rc.DeflateRect(1,1);
		dc->Draw3dRect(rc,GetSysColor(COLOR_3DLIGHT),GetSysColor(COLOR_3DSHADOW));
	}
	//是高亮度显示，设置不同的颜色
	else
	{
		rc.DeflateRect(1,1);
		dc->FillSolidRect(rc,GetSysColor(COLOR_3DLIGHT));
		dc->Draw3dRect(rc,GetSysColor(COLOR_3DLIGHT),GetSysColor(COLOR_3DSHADOW));
		rc.DeflateRect(1,1);
		dc->Draw3dRect(rc,GetSysColor(COLOR_3DSHADOW),GetSysColor(COLOR_3DDKSHADOW));
	}

	rc.DeflateRect(3,1);
	//不是普通键
	if(key->cNormal == 0x00)
	{
		//获得键名字符串
		CString label = " ";
		BOOL special = FALSE;
		if(key->cShifted > 0x6F) //is a function
		{
			int fkeynum = key->cShifted - 0x6F;
			label.Format("F%d",fkeynum);
		}
		else
		{
			switch(key->cShifted)
			{
			case TAB:    // 0x02
				label = "Tab->";
				break;
			case CAPSLOCK:    // 0x03
				label = "Caps";
				break;
			case SHIFT:    // 0x04
				label = "Shift";
				break;
			case CTRL:    // 0x05
				label = "Ctrl";
				break;
			case BSPACE:    // 0x06
				label = "<-Bspc";
				break;
			case ENTER:    // 0x07
				label = "Enter";
				break;
			case ALT:    // 0x08
				label = "Alt";
				break;
			case WINDOW:    // 0x9
				label = "Wnd";
				break;
			case ESC:
				label = "Esc";
				break;
			case LEFT:    // 0x0A
				special = TRUE;
				{
					int cx = (rc.left + rc.right)/2;
					int cy = (rc.top + rc.bottom)/2;
					int siz = rc.Width()/3;
					dc->MoveTo(cx+siz, cy);
					dc->LineTo(cx-siz, cy);
					dc->LineTo(cx-siz + (siz*4)/5, cy - siz/2);
					dc->MoveTo(cx-siz, cy);
					dc->LineTo(cx-siz + (siz*4)/5, cy + siz/2);
				}
				break;
			case RIGHT:    // 0x0B
				special = TRUE;
				{
					int cx = (rc.left + rc.right)/2;
					int cy = (rc.top + rc.bottom)/2;
					int siz = rc.Width()/3;
					dc->MoveTo(cx-siz, cy);
					dc->LineTo(cx+siz, cy);
					dc->LineTo(cx+siz - (siz*4)/5, cy - siz/2);
					dc->MoveTo(cx+siz, cy);
					dc->LineTo(cx+siz - (siz*4)/5, cy + siz/2);
				}
				break;
			case UP:    // 0x0C
				special = TRUE;
				{
					int cx = (rc.left + rc.right)/2;
					int cy = (rc.top + rc.bottom)/2;
					int siz = rc.Width()/3;
					dc->MoveTo(cx, cy+siz);
					dc->LineTo(cx, cy-siz);
					dc->LineTo(cx - siz/2, cy-siz + (siz*4)/5);
					dc->LineTo(cx, cy-siz);
					dc->LineTo(cx + siz/2, cy-siz + (siz*4)/5);
				}
				break;
			case DOWN:    // 0x0D
				special = TRUE;
				{
					int cx = (rc.left + rc.right)/2;
					int cy = (rc.top + rc.bottom)/2;
					int siz = rc.Width()/3;
					dc->MoveTo(cx, cy-siz);
					dc->LineTo(cx, cy+siz);
					dc->LineTo(cx - siz/2, cy+siz - (siz*4)/5);
					dc->LineTo(cx, cy+siz);
					dc->LineTo(cx + siz/2, cy+siz - (siz*4)/5);
				}
				break;
			case PUP: //0x0F
				label = "PgUp";
				break;
			case PDN: //0x10
				label = "PgDn";
				break;
			case HOME: //0x11
				label = "Home";
				break;
			case END: //0x12
				label = "End";
				break;
			case INS: //0x13
				label = "Ins";
				break;
			case DEL: //0x14
				label = "Del";
				break;
			case WWW:
				label = "WWW";
				break;
			default:
				ASSERT(FALSE);
				label = "#ERR#";
				break;
			}
		}
		//不是特殊键
		if(!special)
		{
			CSize tsize;
			tsize = dc->GetTextExtent(label);
			dc->TextOut(
				((rc.left + rc.right)/2) - (tsize.cx/2), 
				((rc.top + rc.bottom)/2) - (tsize.cy/2), 
				label);