对话框与窗口

开发平台：
Visual C++

3DHelperDemoSimpleDlg.cpp：源码内容
							// 3DHelperDemoSimpleDlg.cpp : implementation file
//
#include "stdafx.h"
#include "3DHelperDemoSimple.h"
#include "3DHelperDemoSimpleDlg.h"
#include "MemDC.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()
/////////////////////////////////////////////////////////////////////////////
// CMy3DHelperDemoSimpleDlg dialog
CMy3DHelperDemoSimpleDlg::CMy3DHelperDemoSimpleDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMy3DHelperDemoSimpleDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMy3DHelperDemoSimpleDlg)
		// 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 CMy3DHelperDemoSimpleDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMy3DHelperDemoSimpleDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CMy3DHelperDemoSimpleDlg, CDialog)
	//{{AFX_MSG_MAP(CMy3DHelperDemoSimpleDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CMy3DHelperDemoSimpleDlg message handlers
BOOL CMy3DHelperDemoSimpleDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	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);
		}
	}
	SetIcon(m_hIcon, TRUE);
	SetIcon(m_hIcon, FALSE);
	// Initialize the 3D system
	initialize();
	return TRUE;
}
void CMy3DHelperDemoSimpleDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}
void CMy3DHelperDemoSimpleDlg::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;
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}
HCURSOR CMy3DHelperDemoSimpleDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}
void CMy3DHelperDemoSimpleDlg::OnTimer(UINT nIDEvent) 
{
	// Timer is used to refresh trackball information
	if(nIDEvent == 1) {
		KillTimer(nIDEvent);
		m_c3DHelper.UpdateTrackBall(GetDlgItem(IDC_STATIC_PLACEHOLDER)->GetDC());
		redraw();
		SetTimer(1, 25, NULL);
	}
	CDialog::OnTimer(nIDEvent);
}
void CMy3DHelperDemoSimpleDlg::redraw()
{
	// Create off-screen dc (prevents flickering)
	CRect rcDraw;
	CWnd *pTarget = GetDlgItem(IDC_STATIC_PLACEHOLDER);
	pTarget->GetClientRect(rcDraw);
	// Create the offscreen dc
	CDC *pTDC = pTarget->GetDC();
	CMemDC cDC(pTDC, &rcDraw);
	CDC *pDC = (CDC*)cDC;
	// Clean up the screen an draw a hint
	pDC->FillSolidRect(rcDraw.left, rcDraw.top, rcDraw.Width(),rcDraw.Height(), RGB(0,0,0));
	pDC->SetTextColor(RGB(255,255,0));
	pDC->SetBkMode(OPAQUE);
	pDC->TextOut(1,1, _T("Drag mouse to rotate..."));
	// Calculate screen coordinates of point <1,1,1>
	NeHe::Vector cIn (1.0f, 1.0f, 1.0f);
	NeHe::Vector cOut = m_c3DHelper.RenderPoint(cIn);
	// And display this information
	pDC->SetTextColor(RGB(255,255,255));
	pDC->SetBkMode(OPAQUE); 
	pDC->TextOut((int)cOut.x, (int)cOut.y, _T("* <1, 1, 1>"));
	// Ease relative position recognition
	m_c3DHelper.DrawVisibilityCube(pDC);
	// cDC will be automatically destruced 
}
// Set up initial 3D system
void CMy3DHelperDemoSimpleDlg::initialize()
{
	CWnd *pTarget = GetDlgItem(IDC_STATIC_PLACEHOLDER);
	m_c3DHelper.Initialize(pTarget->GetDC(), NeHe::Vector(-2.0f, -2.0f, -2.0f), NeHe::Vector(2.0f,2.0f,2.0f), TRUE);
	// Timer used to refresh "trackball" information
	SetTimer(1, 25, NULL);
}

						