mainfrm.cpp

这是MFC Windows程序设计（第2版）

// MainFrm.cpp : implementation of the CMainFrame class
//

#include "stdafx.h"
#include "Vista.h"

#include "MainFrm.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMainFrame

IMPLEMENT_DYNCREATE(CMainFrame, CFrameWnd)

BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)
	//{{AFX_MSG_MAP(CMainFrame)
	ON_WM_CREATE()
	ON_WM_QUERYNEWPALETTE()
	ON_WM_PALETTECHANGED()
	//}}AFX_MSG_MAP
	ON_MESSAGE (WM_USER_UPDATE_STATS, OnUpdateImageStats)
END_MESSAGE_MAP()

static UINT indicators[] =
{
	ID_SEPARATOR,
	ID_SEPARATOR
};

/////////////////////////////////////////////////////////////////////////////
// CMainFrame construction/destruction

CMainFrame::CMainFrame()
{
}

CMainFrame::~CMainFrame()
{
}

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	if (CFrameWnd::OnCreate(lpCreateStruct) == -1)
		return -1;

	//
	// Create the status bar.
	//
	if (!m_wndStatusBar.Create(this) ||
		!m_wndStatusBar.SetIndicators(indicators,
		  sizeof(indicators)/sizeof(UINT)))
	{
		TRACE0("Failed to create status bar\n");
		return -1;      // fail to create
	}

	//
	// Size the status bar's rightmost pane to hold a text string.
	//
    TEXTMETRIC tm;
    CClientDC dc (this);
    CFont* pFont = m_wndStatusBar.GetFont ();
    CFont* pOldFont = dc.SelectObject (pFont);
    dc.GetTextMetrics (&tm);
    dc.SelectObject (pOldFont);

    int cxWidth;
    UINT nID, nStyle;
    m_wndStatusBar.GetPaneInfo (1, nID, nStyle, cxWidth);
    cxWidth = tm.tmAveCharWidth * 24;
    m_wndStatusBar.SetPaneInfo (1, nID, nStyle, cxWidth);
	return 0;
}

BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{
	if( !CFrameWnd::PreCreateWindow(cs) )
		return FALSE;
	return TRUE;
}

/////////////////////////////////////////////////////////////////////////////
// CMainFrame diagnostics

#ifdef _DEBUG
void CMainFrame::AssertValid() const
{
	CFrameWnd::AssertValid();
}

void CMainFrame::Dump(CDumpContext& dc) const
{
	CFrameWnd::Dump(dc);
}

#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMainFrame message handlers

BOOL CMainFrame::OnQueryNewPalette() 
{
    CDocument* pDoc = GetActiveDocument ();
    if (pDoc != NULL)
        GetActiveDocument ()->UpdateAllViews (NULL);
    return TRUE;
}

void CMainFrame::OnPaletteChanged(CWnd* pFocusWnd) 
{
    if (pFocusWnd != this) {
        CDocument* pDoc = GetActiveDocument ();
        if (pDoc != NULL)
            GetActiveDocument ()->UpdateAllViews (NULL);
    }
}

LRESULT CMainFrame::OnUpdateImageStats (WPARAM wParam, LPARAM lParam)
{
    m_wndStatusBar.SetPaneText (1, (LPCTSTR) lParam, TRUE);
	return 0;
}