modelessdlg.cpp

This is Visual C++ basis operation. Using that you can fast go in study.

// ModelessDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Exam6_1.h"
#include "ModelessDlg.h"

#include "Exam6_1View.h"

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

/////////////////////////////////////////////////////////////////////////////
// CModelessDlg dialog


CModelessDlg::CModelessDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CModelessDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CModelessDlg)
	m_x = 0;
	m_y = 0;
	m_radius = 0;
	//}}AFX_DATA_INIT
	m_color=RGB(255,255,255);
}


void CModelessDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CModelessDlg)
	DDX_Text(pDX, IDC_EDIT1, m_x);
	DDX_Text(pDX, IDC_EDIT2, m_y);
	DDX_Text(pDX, IDC_EDIT3, m_radius);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CModelessDlg, CDialog)
	//{{AFX_MSG_MAP(CModelessDlg)
	ON_BN_CLICKED(ID_COLOR, OnColor)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CModelessDlg message handlers

void CModelessDlg::OnOK() 
{
	// TODO: Add extra validation here
    UpdateData(true);// 获取输入值	
    CClientDC dc(m_parent);//创建指向主窗口视图的CClientDC对象。 
	
	CBrush  bs;    
	bs. CreateSolidBrush(m_color);	
	dc.SelectObject(&bs);

    //根据输入的位置和半径画圆
    dc.Ellipse(m_x-m_radius,m_y-m_radius,m_x+m_radius,m_y+m_radius);	
	//CDialog::OnOK();
}

void CModelessDlg::OnCancel() 
{
	// TODO: Add extra cleanup here
    //删除对话框窗口    
	m_parent->m_pDlg =NULL;	
	DestroyWindow();	

	//CDialog::OnCancel();
}

void CModelessDlg::PostNcDestroy() 
{
	// TODO: Add your specialized code here and/or call the base class
	delete this;//删除对话框对象

	CDialog::PostNcDestroy();
}

void CModelessDlg::OnColor() 
{
	// TODO: Add your control notification handler code here
	CColorDialog dlg;//定义颜色对话框类的对象	
	if(dlg.DoModal()==IDOK )//调用颜色对话框        
		m_color=dlg.GetColor();//GetColor方法返回选中的颜色值
	
}