原文地址: https://blog.csdn.net/iiprogram/article/details/1922922
这部分代码监视剪贴板中数据格式，只要剪贴板中数据变化，就在标题栏上显示出所有可识别的数据格式.
下面是所有该部分的代码，我的至少在Release后可运行，不知能不能解决你的问题
// ClipSpyDlg.h : header file
//
#if !defined(AFX_CLIPSPYDLG_H_INCLUDED_)
#define AFX_CLIPSPYDLG_H_INCLUDED_
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
/
// CClipSpyDlg dialog
class CClipSpyDlg : public CDialog
{
// Construction
public:
CClipSpyDlg(CWnd* pParent = NULL); // standard constructor
// Dialog Data
//{{AFX_DATA(CClipSpyDlg)
enum { IDD = IDD_CLIPSPY_DIALOG };
// NOTE: the ClassWizard will add data members here
//}}AFX_DATA
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CClipSpyDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL
// Implementation
protected:
HICON m_hIcon;
// Generated message map functions
//{{AFX_MSG(CClipSpyDlg)
virtual BOOL OnInitDialog();
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
afx_msg void OnDrawClipboard();
afx_msg void OnDestroy();
afx_msg void OnChangeCbChain(HWND hWndRemove, HWND hWndAfter);
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
private:
HWND m_hWndNextCBViewer;
};
//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.
#endif // !defined(AFX_CLIPSPYDLG_H_INCLUDED_)
//
// ClipSpyDlg.cpp : implementation file
//
#include "stdafx.h"
#include "ClipSpy.h"
#include "ClipSpyDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/
// CClipSpyDlg dialog
CClipSpyDlg::CClipSpyDlg(CWnd* pParent /*=NULL*/)
: CDialog(CClipSpyDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CClipSpyDlg)
// 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);
//TODO: 变量初始化
m_hWndNextCBViewer=NULL;
}
void CClipSpyDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CClipSpyDlg)
// NOTE: the ClassWizard will add DDX and DDV calls here
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CClipSpyDlg, CDialog)
//{{AFX_MSG_MAP(CClipSpyDlg)
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_WM_DRAWCLIPBOARD()
ON_WM_DESTROY()
ON_WM_CHANGECBCHAIN()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/
// CClipSpyDlg message handlers
BOOL CClipSpyDlg::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
//TODO: 将对话框加入剪贴板监视窗口链中
m_hWndNextCBViewer=SetClipboardViewer();
return TRUE; // return TRUE unless you set the focus to a control
}
// 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 CClipSpyDlg::OnPaint()
{
if (IsIconic())
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{
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 CClipSpyDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CClipSpyDlg::OnDestroy()
{
//TODO: 从监视链中删除本监视窗口
ChangeClipboardChain( m_hWndNextCBViewer );
CDialog::OnDestroy();
}
void CClipSpyDlg::OnDrawClipboard()
{
//TODO: 剪贴板内容发生变化
CString sText("ClipSpy-");
UINT CBFormat[]={
CF_BITMAP,
CF_DIB,
CF_DIF,
CF_DSPBITMAP,
CF_DSPENHMETAFILE,
CF_DSPMETAFILEPICT,
CF_DSPTEXT,
CF_ENHMETAFILE,
CF_HDROP,
CF_LOCALE,
CF_METAFILEPICT,
CF_OEMTEXT,
CF_OWNERDISPLAY,
CF_PALETTE,
CF_PENDATA,
CF_RIFF,
CF_SYLK,
CF_TEXT,
CF_WAVE,
CF_TIFF
};
char *FormatName[]={
"CF_BITMAP",
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"CF_DIB",
"CF_DIF",
"CF_DSPBITMAP",
"CF_DSPENHMETAFILE",
"CF_DSPMETAFILEPICT",
"CF_DSPTEXT",
"CF_ENHMETAFILE",
"CF_HDROP",
"CF_LOCALE",
"CF_METAFILEPICT",
"CF_OEMTEXT",
"CF_OWNERDISPLAY",
"CF_PALETTE",
"CF_PENDATA",
"CF_RIFF",
"CF_SYLK",
"CF_TEXT",
"CF_WAVE",
"CF_TIFF",
"未知格式或剪贴板中无数据"
};
//打开剪贴板查询格式类型
if( OpenClipboard() )
{
CString sCBAvailableFormat("");
int nFormatNum=sizeof(CBFormat)/sizeof(UINT);
//枚举类型
for(int i=0;i<nFormatNum;i++)
{
if( ::IsClipboardFormatAvailable( CBFormat[i] ) )
{
if( sCBAvailableFormat.IsEmpty() )
sCBAvailableFormat+=FormatName[i];
else
sCBAvailableFormat=sCBAvailableFormat+" & "+FormatName[i];
}
}
if( !sCBAvailableFormat.IsEmpty() )
sText+=sCBAvailableFormat;//列出有效格式
else
sText+=FormatName[i];//该格式未知
::CloseClipboard();
}
//在标题栏中显示格式
SetWindowText( sText );
//传WM_DRAWCLIPBOARD给下一个监视窗口
::SendMessage(m_hWndNextCBViewer,WM_DRAWCLIPBOARD,0,0);
}
void CClipSpyDlg::OnChangeCbChain(HWND hWndRemove, HWND hWndAfter)
{
// TODO: 监视链中窗口发生变动
if( m_hWndNextCBViewer==hWndRemove )
m_hWndNextCBViewer=hWndAfter;
//传WM_CHANGECBCHAIN给下一个监视窗口
::SendMessage(m_hWndNextCBViewer,WM_CHANGECBCHAIN,
(WPARAM)hWndRemove,(LPARAM)hWndAfter);
} ————————————————
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原文链接：https://blog.csdn.net/iiprogram/article/details/1922922
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