mfcaacondlg.cpp

教你怎么用VC++做ActiveX控件

// MfcAAConDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MfcAACon.h"
#include "MfcAAConDlg.h"
#include "DlgProxy.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()

/////////////////////////////////////////////////////////////////////////////
// CMfcAAConDlg dialog

IMPLEMENT_DYNAMIC(CMfcAAConDlg, CDialog);

CMfcAAConDlg::CMfcAAConDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMfcAAConDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMfcAAConDlg)
		// 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);
	m_pAutoProxy = NULL;
}

CMfcAAConDlg::~CMfcAAConDlg()
{
	// If there is an automation proxy for this dialog, set
	//  its back pointer to this dialog to NULL, so it knows
	//  the dialog has been deleted.
	if (m_pAutoProxy != NULL)
		m_pAutoProxy->m_pDialog = NULL;
}

void CMfcAAConDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMfcAAConDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	DDX_Control(pDX, IDC_STATIC_PREVIEW, m_staticPreview);
	DDX_Control(pDX, IDC_SLIDER_RED, m_slideRed);
	DDX_Control(pDX, IDC_SLIDER_RADIUS, m_slideRadius);
	DDX_Control(pDX, IDC_SLIDER_GREEN, m_slideGreen);
	DDX_Control(pDX, IDC_SLIDER_BLUE, m_slideBlue);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMfcAAConDlg, CDialog)
	//{{AFX_MSG_MAP(CMfcAAConDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_CLOSE()
	ON_WM_CREATE()
	ON_WM_HSCROLL()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMfcAAConDlg message handlers

BOOL CMfcAAConDlg::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
	//	初始化颜色游标的范围
	m_slideRed.SetRange(0,255);
	m_slideGreen.SetRange(0,255);
	m_slideBlue.SetRange(0,255);

	//	初始化半径游标
	CRect rect;
	m_staticPreview.GetWindowRect(&rect);
	int iMinRadius=min(rect.Height(),rect.Width())/2;
	m_slideRadius.SetRange(0,iMinRadius);
	m_slideRadius.SetPos(0);
	
	m_Circle.DrawCircle(long(m_staticPreview.GetWindowDC()));
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

// Automation servers should not exit when a user closes the UI
//  if a controller still holds on to one of its objects.  These
//  message handlers make sure that if the proxy is still in use,
//  then the UI is hidden but the dialog remains around if it
//  is dismissed.

void CMfcAAConDlg::OnClose() 
{
	if (CanExit())
		CDialog::OnClose();
}

void CMfcAAConDlg::OnOK() 
{
	if (CanExit())
		CDialog::OnOK();
}

void CMfcAAConDlg::OnCancel() 
{
	if (CanExit())
		CDialog::OnCancel();
}

BOOL CMfcAAConDlg::CanExit()
{
	// If the proxy object is still around, then the automation
	//  controller is still holding on to this application.  Leave
	//  the dialog around, but hide its UI.
	if (m_pAutoProxy != NULL)
	{
		ShowWindow(SW_HIDE);
		return FALSE;
	}

	return TRUE;
}

int CMfcAAConDlg::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CDialog::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	// TODO: Add your specialized creation code here
	if(!m_Circle.CreateDispatch(_T("MfcAASvr.AxCircle")))
	{
		AfxMessageBox("初始化失败！");
		return -1;
	}
	
	return 0;
}

void CMfcAAConDlg::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) 
{
	// TODO: Add your message handler code here and/or call default
	//设置圆的属性
	m_Circle.SetRed(m_slideRed.GetPos());
	m_Circle.SetGreen(m_slideGreen.GetPos());
	m_Circle.SetBlue(m_slideBlue.GetPos());
	m_Circle.SetRadius(m_slideRadius.GetPos());

	//	绘制圆
	m_Circle.DrawCircle(long(m_staticPreview.GetWindowDC()));
	
	CDialog::OnHScroll(nSBCode, nPos, pScrollBar);
}