tooltipsdlg.cpp

C++编程实践与技巧一书各章节的源码

// ToolTipsDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ToolTips.h"
#include "ToolTipsDlg.h"
#include "AFXPRIV.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CToolTipsDlg dialog

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

BEGIN_MESSAGE_MAP(CToolTipsDlg, CDialog)
	//{{AFX_MSG_MAP(CToolTipsDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_NOTIFY_EX_RANGE(TTN_NEEDTEXTW, 0, 0xFFFF, OnToolTipText)
	ON_NOTIFY_EX_RANGE(TTN_NEEDTEXTA, 0, 0xFFFF, OnToolTipText)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CToolTipsDlg message handlers

BOOL CToolTipsDlg::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
	cToolBar.Create(this);
	cToolBar.LoadToolBar(IDR_TOOLBAR1);
	cToolBar.ShowWindow(SW_SHOW);
	cToolBar.SetBarStyle(CBRS_ALIGN_TOP | CBRS_TOOLTIPS | CBRS_FLYBY);
	RepositionBars(AFX_IDW_CONTROLBAR_FIRST, AFX_IDW_CONTROLBAR_LAST, 0);


	
	// TODO: Add extra initialization here
	
	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 CToolTipsDlg::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 CToolTipsDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}


BOOL CToolTipsDlg::OnToolTipText(UINT, NMHDR* pNMHDR, LRESULT* pResult)
{
     ASSERT(pNMHDR->code == TTN_NEEDTEXTA || pNMHDR->code == TTN_NEEDTEXTW);

     // if there is a top level routing frame then let it handle the message
     if (GetRoutingFrame() != NULL) return FALSE;

     // to be thorough we will need to handle UNICODE versions of the message also !!
     TOOLTIPTEXTA* pTTTA = (TOOLTIPTEXTA*)pNMHDR;
     TOOLTIPTEXTW* pTTTW = (TOOLTIPTEXTW*)pNMHDR;
     TCHAR szFullText[512];
     CString strTipText;
     UINT nID = pNMHDR->idFrom;

     if (pNMHDR->code == TTN_NEEDTEXTA && (pTTTA->uFlags & TTF_IDISHWND) ||
         pNMHDR->code == TTN_NEEDTEXTW && (pTTTW->uFlags & TTF_IDISHWND))
     {
          // idFrom is actually the HWND of the tool 
          nID = ::GetDlgCtrlID((HWND)nID);
     }

     if (nID != 0) // will be zero on a separator
     {
          AfxLoadString(nID, szFullText);
          strTipText=szFullText;

#ifndef _UNICODE
          if (pNMHDR->code == TTN_NEEDTEXTA)
          {
               lstrcpyn(pTTTA->szText, strTipText, sizeof(pTTTA->szText));
          }
          else
          {
               _mbstowcsz(pTTTW->szText, strTipText, sizeof(pTTTW->szText));
          }
#else
          if (pNMHDR->code == TTN_NEEDTEXTA)
          {
               _wcstombsz(pTTTA->szText, strTipText,sizeof(pTTTA->szText));
          }
          else
          {
               lstrcpyn(pTTTW->szText, strTipText, sizeof(pTTTW->szText));
          }
#endif

          *pResult = 0;

          // bring the tooltip window above other popup windows
          ::SetWindowPos(pNMHDR->hwndFrom, HWND_TOP, 0, 0, 0, 0,SWP_NOACTIVATE|
               SWP_NOSIZE|SWP_NOMOVE|SWP_NOOWNERZORDER); return TRUE;
     }
}