appinstancedlg.cpp

window核心编程_code源程序

// AppInstanceDlg.cpp : implementation file
//

#include "stdafx.h"
#include "AppInstance.h"
#include "AppInstanceDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
UINT g_uMsgAppInstCount=INVALID_ATOM;
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
#pragma data_seg("Shared")
volatile LONG g_lApplicationInstance=0;
#pragma data_seg()
#pragma comment(linker,"/Section:Shared,RWS")
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()

/////////////////////////////////////////////////////////////////////////////
// CAppInstanceDlg dialog

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

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

/////////////////////////////////////////////////////////////////////////////
// CAppInstanceDlg message handlers

BOOL CAppInstanceDlg::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
	::PostMessage(HWND_BROADCAST,g_uMsgAppInstCount,0,0);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

int CAppInstanceDlg::DoModal() 
{
	g_uMsgAppInstCount=::RegisterWindowMessage(TEXT("Num"));
	InterlockedExchangeAdd((LPLONG)&g_lApplicationInstance,1);
	::PostMessage(HWND_BROADCAST,g_uMsgAppInstCount,0,0);
	
	return CDialog::DoModal();
}

//DEL BOOL CAppInstanceDlg::OnCmdMsg(UINT nID, int nCode, void* pExtra, AFX_CMDHANDLERINFO* pHandlerInfo) 
//DEL {
//DEL if(nCode==(int)g_uMsgAppInstCount)
//DEL {
//DEL   SetDlgItemInt(IDC_InstanceNum,g_lApplicationInstance,FALSE);
//DEL }	
//DEL 	return CDialog::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo);
//DEL }

//DEL BOOL CAppInstanceDlg::OnCommand(WPARAM wParam, LPARAM lParam) 
//DEL {
//DEL 	// TODO: Add your specialized code here and/or call the base class
//DEL 	
//DEL 	return CDialog::OnCommand(wParam, lParam);
//DEL }

LRESULT CAppInstanceDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam) 
{
	// TODO: Add your specialized code here and/or call the base class
	if(message==g_uMsgAppInstCount)
{
  SetDlgItemInt(IDC_InstanceNum,g_lApplicationInstance,FALSE);
}
	return CDialog::WindowProc(message, wParam, lParam);
}

void CAppInstanceDlg::OnDestroy() 
{
	CDialog::OnDestroy();
	
	// TODO: Add your message handler code here
	InterlockedExchangeAdd((LPLONG)&g_lApplicationInstance,-1);
	::PostMessage(HWND_BROADCAST,g_uMsgAppInstCount,0,0);
}