drawdlg.cpp

用MFC写的简单的画简单的图形的程序

// DrawDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Draw.h"
#include "DrawDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CDrawDlg dialog

CDrawDlg::CDrawDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDrawDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDrawDlg)
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CDrawDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDrawDlg)
	DDX_Control(pDX, IDC_SOLIDBRUSH_RADIO, m_SolidBrush);
	DDX_Control(pDX, IDC_SOLID_RADIO, m_Solid);
	DDX_Control(pDX, IDC_SHAPE_COMBO, m_Shape);
	DDX_Control(pDX, IDC_BRUSH_COMBO, m_Brush);
	DDX_Control(pDX, IDC_PEN_COMBO, m_Pen);
	DDX_Control(pDX, IDC_DRAW_BUTTON, m_Draw);
	DDX_Control(pDX, IDC_EXIT_BUTTON, m_Exit);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDrawDlg, CDialog)
	//{{AFX_MSG_MAP(CDrawDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_EXIT_BUTTON, OnExitButton)
	ON_BN_CLICKED(IDC_DASH_RADIO, OnDashRadio)
	ON_BN_CLICKED(IDC_DASHDOT_RADIO, OnDashdotRadio)
	ON_BN_CLICKED(IDC_DOT_RADIO, OnDotRadio)
	ON_BN_CLICKED(IDC_SOLID_RADIO, OnSolidRadio)
	ON_BN_CLICKED(IDC_SOLIDBRUSH_RADIO, OnSolidbrushRadio)
	ON_BN_CLICKED(IDC_CROSS_RADIO, OnCrossRadio)
	ON_BN_CLICKED(IDC_FD_RADIO, OnFdRadio)
	ON_BN_CLICKED(IDC_BD_RADIO, OnBdRadio)
	ON_CBN_SELENDOK(IDC_BRUSH_COMBO, OnSelendokBrushCombo)
	ON_CBN_SELENDOK(IDC_PEN_COMBO, OnSelendokPenCombo)
	ON_CBN_SELENDOK(IDC_SHAPE_COMBO, OnSelendokShapeCombo)
	ON_BN_CLICKED(IDC_DRAW_BUTTON, OnDrawButton)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDrawDlg message handlers

BOOL CDrawDlg::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
	m_crPenColor = RGB(255, 0, 0);		//默认笔颜色
	m_crBrushColor = RGB(255, 0, 0);	//默认刷颜色
	m_nPenStyle = PS_SOLID;				//默认笔类型
	m_nBrushStyle = 0;					//默认刷类型
	m_crShape = 0;
	m_Pen.SetCurSel(0);					//设置Pen组合框当前选项
	m_Brush.SetCurSel(0);				//设置Brush组合框当前选项
	m_Shape.SetCurSel(0);				//设置Shape组合框当前选项

	//设置单选按钮的初始状态
	CheckRadioButton(IDC_SOLID_RADIO, IDC_DASHDOT_RADIO, IDC_SOLID_RADIO);
	CheckRadioButton(IDC_SOLIDBRUSH_RADIO, IDC_BD_RADIO, IDC_SOLIDBRUSH_RADIO);
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CDrawDlg::OnExitButton() 
{
	OnOK();
}

void CDrawDlg::OnSolidRadio() 
{
	m_nPenStyle = PS_SOLID;		//实线
}

void CDrawDlg::OnDashRadio() 
{
	m_nPenStyle = PS_DASH;		//划线
}

void CDrawDlg::OnDashdotRadio() 
{
	m_nPenStyle = PS_DOT;		//点线
}

void CDrawDlg::OnDotRadio() 
{
	m_nPenStyle = PS_DASHDOT;	//点划线
}



void CDrawDlg::OnSolidbrushRadio() 
{
	m_nBrushStyle = 0;			//实线
}

void CDrawDlg::OnCrossRadio() 
{
	m_nBrushStyle = HS_CROSS;	//交叉线
}

void CDrawDlg::OnFdRadio() 
{
	m_nBrushStyle = HS_FDIAGONAL;	//向上45度线
}

void CDrawDlg::OnBdRadio() 
{
	m_nBrushStyle = HS_BDIAGONAL;	//向下45度线
}

void CDrawDlg::OnSelendokBrushCombo() 
{
	int i;
	i = m_Brush.GetCurSel();

	if(i == 0)
	{
		m_crBrushColor = RGB(255, 0, 0);
	}
	else if(i == 1)
	{
		m_crBrushColor = RGB(0, 255, 0);
	}
	else if(i == 2)
	{
		m_crBrushColor = RGB(0, 0, 255);
	}
/*	else if(i == 3)
	{
		m_crBrushColor = RGB(255, 255, 0);
	}
	else if(i == 4)
	{
		m_crBrushColor = RGB(0, 255, 255);
	}*/
}

void CDrawDlg::OnSelendokPenCombo() 
{
	int i;
	i = m_Pen.GetCurSel();

	if(i == 0)
	{
		m_crPenColor = RGB(255, 0, 0);
	}
	else if(i == 1)
	{
		m_crPenColor = RGB(0, 255, 0);
	}
	else if(i == 2)
	{
		m_crPenColor = RGB(0, 0, 255);
	}
}

void CDrawDlg::OnSelendokShapeCombo() 
{
	m_crShape = m_Shape.GetCurSel();
}

void CDrawDlg::OnDrawButton() 
{
	CClientDC dc(this);
	CPen *ppenOld, penNew;
	CBrush *pbrushOld, brushNew, brushBack;
	CRect rectClient;
	GetClientRect(&rectClient);
	CRect rectDraw(rectClient.right - 170, 20, rectClient.right - 20, 170);

	//用白色画刷画图形区
	brushBack.CreateSolidBrush(RGB(255, 255, 255));
	pbrushOld = dc.SelectObject(&brushBack);
	dc.Rectangle(rectDraw);

	if(m_nBrushStyle != 0)
	{
		brushNew.CreateHatchBrush(m_nBrushStyle, m_crBrushColor);
	}
	else
	{
		brushNew.CreateSolidBrush(m_crBrushColor);
	}

	penNew.CreatePen(m_nPenStyle, 1, m_crPenColor);
	ppenOld = dc.SelectObject(&penNew);
	dc.SelectObject(&brushNew);
	if(m_crShape == 0)
	{
		dc.MoveTo(rectDraw.left, rectDraw.top);
		dc.LineTo(rectDraw.right, rectDraw.bottom);
	}
	else if(m_crShape == 1)
	{
		dc.Ellipse(rectDraw);
	}
	else if(m_crShape == 2)
	{
		dc.Rectangle(rectDraw);
	}
	else if(m_crShape == 3)
	{
		dc.RoundRect(rectDraw, CPoint(50, 50));
	}

	dc.SelectObject(ppenOld);
	dc.SelectObject(pbrushOld);
}