clipboardaccessdlg.cpp

vc++高级编程源代码

// ClipBoardAccessDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ClipBoardAccess.h"
#include "ClipBoardAccessDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CClipBoardAccessDlg dialog

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

BEGIN_MESSAGE_MAP(CClipBoardAccessDlg, CDialog)
	//{{AFX_MSG_MAP(CClipBoardAccessDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_OBTAIN, OnObtain)
	ON_BN_CLICKED(IDC_SET, OnSet)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CClipBoardAccessDlg message handlers

BOOL CClipBoardAccessDlg::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
	SetRadio(3);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CClipBoardAccessDlg::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 CClipBoardAccessDlg::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 CClipBoardAccessDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CClipBoardAccessDlg::OnObtain() 
{	
	// TODO: Add your control notification handler code here
	if (!::OpenClipboard(m_hWnd))
	{
		AfxMessageBox(_T("有其它程序打开了剪贴板!"));
		return;
	}
	
	HGLOBAL hMem;
	LPSTR lpStr;
	UINT uFormat = ::EnumClipboardFormats(0);

	// 处理剪贴板为空的情形
	if (!uFormat)
	{
		AfxMessageBox(_T("剪贴板为空!"));
		return;
	}

	// 以特定方式获得剪贴板数据
	while (1)
	{
		hMem = ::GetClipboardData(uFormat);
		lpStr = (LPSTR)::GlobalLock(hMem);
		if (lpStr)
			break;
		uFormat = ::EnumClipboardFormats(uFormat);
	}

	// 获得剪贴板数据长度
	SIZE_T size = ::GlobalSize(hMem);


	CString strShow,strAdd;
	UINT nLine;
	SIZE_T counter;
	for (counter = 0,nLine = 1;counter <= size;counter++,nLine++)
	{
		strAdd.Format("%02x  ",(UCHAR)lpStr[counter]);
		strShow += strAdd;
		if (nLine % 8 == 0)
		{
			nLine %= 8;
			strShow += "\r\n";
		}
		if (counter == 0x100)
		{
			AfxMessageBox(_T("剪贴板数据太多，这里只显示前256字节的内容"));
			break;
		}
	}

	// 解除对剪贴板句柄的锁定，关闭剪贴板供其它程序使用
	::GlobalUnlock(hMem);
	::CloseClipboard();

	// 显示数据类型
	switch (uFormat)
	{
	case CF_TEXT:
	case CF_UNICODETEXT:
		SetRadio(0);
		break;
	case CF_BITMAP:
	case CF_DIB:
	case CF_PALETTE:
	case CF_TIFF:
		SetRadio(1);
		break;
	case CF_ENHMETAFILE:
	case CF_WAVE:
	case CF_RIFF:
		SetRadio(2);
		break;
	default:
		SetRadio(3);
		break;
	}

	// 将数据显示到编辑控件中
	SetDlgItemText(IDC_EDIT_SHOW,strShow);

	// 显示剪贴板数据长度
	strAdd.Format("剪贴板中数据共%o字节",(LONGLONG)size);
	SetDlgItemText(IDC_EDIT_LENGTH,strAdd);
}

void CClipBoardAccessDlg::SetRadio(UINT nIndex)
{
	((CButton *)GetDlgItem(IDC_TEXT))
		->SetCheck(nIndex == 0 ? TRUE : FALSE);
	((CButton *)GetDlgItem(IDC_IMAGE))
		->SetCheck(nIndex == 1 ? TRUE : FALSE);
	((CButton *)GetDlgItem(IDC_MEDIA))
		->SetCheck(nIndex == 2 ? TRUE : FALSE);
	((CButton *)GetDlgItem(IDC_BINARY))
		->SetCheck(nIndex == 3 ? TRUE : FALSE);
}

void CClipBoardAccessDlg::OnSet() 
{
	// TODO: Add your control notification handler code here
	int nStart,nEnd;
	((CEdit *)GetDlgItem(IDC_EDIT_SHOW))->GetSel(nStart,nEnd);
	
	CString strShow;
	GetDlgItem(IDC_EDIT_SHOW)->GetWindowText(strShow);
	strShow = strShow.Mid(nStart,nEnd - nStart);


	HGLOBAL hMem = ::GlobalAlloc(GHND,strShow.GetLength() + 1);
	if (!hMem)
	{	
		AfxMessageBox(_T("申请内存空间失败"));
		return;
	}

	if (!::OpenClipboard(m_hWnd))
	{
		AfxMessageBox(_T("有其它程序打开了剪贴板!"));
		return;
	}
	
	// 将选中的字符串写入剪贴板
	LPVOID pSet = ::GlobalLock(hMem);
	memcpy(pSet,(LPCTSTR)strShow,strShow.GetLength() + 1);
	::SetClipboardData(CF_TEXT,hMem);

	// 释放申请的内存资源，关闭剪贴板
	::GlobalUnlock(hMem);
	::GlobalFree(hMem);
	::CloseClipboard();
}