标尺dlg.cpp

在屏幕上画出标尺

// 标尺Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "标尺.h"
#include "标尺Dlg.h"
#include "center_dlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMyDlg dialog

CMyDlg::CMyDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMyDlg::IDD, pParent)
{
	
	//{{AFX_DATA_INIT(CMyDlg)
	m_edit1 = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

}

void CMyDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMyDlg)
	DDX_Control(pDX, IDC_SLIDER1, m_slider);
	DDX_Text(pDX, IDC_EDIT1, m_edit1);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMyDlg, CDialog)
	//{{AFX_MSG_MAP(CMyDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_DISP, OnButtonDisp)
	ON_WM_TIMER()
	ON_BN_CLICKED(IDC_BUTTON_COLOR, OnButtonColor)
	ON_WM_MOVE()
	ON_NOTIFY(NM_CUSTOMDRAW, IDC_SLIDER1, OnCustomdrawSlider1)
	ON_EN_CHANGE(IDC_EDIT1, OnChangeEdit1)
	ON_EN_UPDATE(IDC_EDIT1, OnUpdateEdit1)
	ON_NOTIFY(NM_OUTOFMEMORY, IDC_SLIDER1, OnOutofmemorySlider1)
	ON_NOTIFY(NM_RELEASEDCAPTURE, IDC_SLIDER1, OnReleasedcaptureSlider1)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyDlg message handlers

BOOL CMyDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	// 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
	SetTimer(1,1,NULL);
	linecolor=RGB(255,0,0);
	textcolor=RGB(255,105,255);
	pen.CreatePen(PS_SOLID,0,linecolor);
	myFont.CreateFont(
		16,
		8,
		0,
		0,
		FW_NORMAL,
		FALSE,
		FALSE,
		0,DEFAULT_CHARSET,OUT_DEVICE_PRECIS,CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,DEFAULT_PITCH,
		"华文新魏");

	// TODO: Add extra initialization here
	m_scale=10;
	m_slider.SetRange(5,20);
	m_slider.SetPos(m_scale);

	//获得屏幕大少
	/* 屏幕dc初始化*/
	HDC screenDC;
	screenDC = CreateDC("DISPLAY",NULL,NULL,NULL);
	/* 检索设备 */
	win_rect.right = GetDeviceCaps(screenDC,HORZRES);
	win_rect.bottom = GetDeviceCaps(screenDC,VERTRES);
	/* 清除 */
	DeleteDC(screenDC);
	center_x=win_rect.right/2;
	center_y=win_rect.bottom/2;
	return TRUE; 
	// return TRUE  unless you set the focus to a control
}

// 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 CMyDlg::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 CMyDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CMyDlg::OnButtonDisp() 
{
	// TODO: Add your control notification handler code here
	center_dlg centerdlg;
	centerdlg.DoModal();
	center_x=centerdlg.center_x;
	center_y=centerdlg.center_y;
//刷新整个屏幕
	ICONMETRICS   im;   
	im.cbSize=sizeof(ICONMETRICS);   
	SystemParametersInfo(SPI_GETICONMETRICS,sizeof(ICONMETRICS),(PVOID)&im,0);   
	SystemParametersInfo(SPI_SETICONMETRICS,sizeof(ICONMETRICS),(PVOID)&im,SPIF_SENDCHANGE);
}

void CMyDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default

	CWindowDC dc(NULL);
	oldpen=dc.SelectObject(&pen);
//	dc.SetTextColor(RGB(255,105,255));
	dc.SetTextColor(textcolor);
	dc.SetBkMode(TRANSPARENT);
	oldFont=dc.SelectObject(&myFont);
	
	dc.MoveTo(0,center_y);
	dc.LineTo(win_rect.right,center_y);
	dc.MoveTo(center_x,0);
	dc.LineTo(center_x,win_rect.bottom);
//	dc.TextOut(center_x+4,center_y+6,"0");
	int i;
	char msg[2];
//绘制X方向的刻度
	for(i=1;(center_x+m_scale*i)<win_rect.right;i++)
	{	if(i%10)
		{	dc.MoveTo(center_x+m_scale*i,center_y-5);
			dc.LineTo(center_x+m_scale*i,center_y+5);
		}
		else
		{	dc.MoveTo(center_x+m_scale*i,center_y-10);
			dc.LineTo(center_x+m_scale*i,center_y+10);
			wsprintf(msg,"%d",i/10);
			dc.TextOut(center_x+m_scale*i-4,center_y+10,msg);	
		}
	}
	for(i=1;m_scale*i<center_x;i++)
	{	if(i%10)
		{	dc.MoveTo(center_x-m_scale*i,center_y-5);
			dc.LineTo(center_x-m_scale*i,center_y+5);
		}
		else
		{	dc.MoveTo(center_x-m_scale*i,center_y-10);
			dc.LineTo(center_x-m_scale*i,center_y+10);
			wsprintf(msg,"-%d",i/10);
			dc.TextOut(center_x-m_scale*i-8,center_y+10,msg);	
		}
	}
//绘制Y方向的刻度
	for(i=1;(center_y+m_scale*i)<win_rect.bottom;i++)
	{	if(i%10)
		{	dc.MoveTo(center_x-5,center_y+m_scale*i);
			dc.LineTo(center_x+5,center_y+m_scale*i);
		}
		else
		{	dc.MoveTo(center_x-10,center_y+m_scale*i);
			dc.LineTo(center_x+10,center_y+m_scale*i);
			wsprintf(msg,"-%d",i/10);
			dc.TextOut(center_x+15,center_y-8+m_scale*i,msg);	
		}
	}
	for(i=1;m_scale*i<center_y;i++)
	{	if(i%10)
		{	dc.MoveTo(center_x-5,center_y-m_scale*i);
			dc.LineTo(center_x+5,center_y-m_scale*i);
		}
		else
		{	dc.MoveTo(center_x-10,center_y-m_scale*i);
			dc.LineTo(center_x+10,center_y-m_scale*i);
			wsprintf(msg,"%d",i/10);
			dc.TextOut(center_x+15,center_y-8-m_scale*i,msg);	
		}
	}

	dc.SelectObject(oldFont);
	dc.SelectObject(oldpen);
	
	CDialog::OnTimer(nIDEvent);
}

void CMyDlg::OnCancel() 
{
	// TODO: Add extra cleanup here
	
	CDialog::OnCancel();
}

void CMyDlg::OnButtonColor() 
{
	// TODO: Add your control notification handler code here
	CColorDialog dlg;
	int iResult;
	iResult=dlg.DoModal();
	if(iResult=IDOK)
	{	
		textcolor=dlg.GetColor();
	}
}

void CMyDlg::OnMove(int x, int y) 
{
	CDialog::OnMove(x, y);
//刷新整个屏幕
	ICONMETRICS   im;   
	im.cbSize=sizeof(ICONMETRICS);   
	SystemParametersInfo(SPI_GETICONMETRICS,sizeof(ICONMETRICS),(PVOID)&im,0);   
	SystemParametersInfo(SPI_SETICONMETRICS,sizeof(ICONMETRICS),(PVOID)&im,SPIF_SENDCHANGE);   

//	InvalidateRect(NULL,true);
//	UpdateWindow();	
}

void CMyDlg::OnCustomdrawSlider1(NMHDR* pNMHDR, LRESULT* pResult) 
{
	// TODO: Add your control notification handler code here
	m_edit1=m_slider.GetPos();
	this->UpdateData(false);
 
	*pResult = 0;
}

void CMyDlg::OnChangeEdit1() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
	
}

void CMyDlg::OnUpdateEdit1() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function to send the EM_SETEVENTMASK message to the control
	// with the ENM_UPDATE flag ORed into the lParam mask.
	
	// TODO: Add your control notification handler code here
	
}

void CMyDlg::OnOutofmemorySlider1(NMHDR* pNMHDR, LRESULT* pResult) 
{
	// TODO: Add your control notification handler code here
	
	*pResult = 0;
}

void CMyDlg::OnReleasedcaptureSlider1(NMHDR* pNMHDR, LRESULT* pResult) 
{
	// TODO: Add your control notification handler code here
	m_scale=m_edit1;
//刷新整个屏幕
	ICONMETRICS im;   
	im.cbSize=sizeof(ICONMETRICS);   
	SystemParametersInfo(SPI_GETICONMETRICS,sizeof(ICONMETRICS),(PVOID)&im,0);   
	SystemParametersInfo(SPI_SETICONMETRICS,sizeof(ICONMETRICS),(PVOID)&im,SPIF_SENDCHANGE); 
	
	*pResult = 0;
}

BOOL CMyDlg::DestroyWindow() 
{
	// TODO: Add your specialized code here and/or call the base class
//刷新整个屏幕
	ICONMETRICS im;   
	im.cbSize=sizeof(ICONMETRICS);   
	SystemParametersInfo(SPI_GETICONMETRICS,sizeof(ICONMETRICS),(PVOID)&im,0);   
	SystemParametersInfo(SPI_SETICONMETRICS,sizeof(ICONMETRICS),(PVOID)&im,SPIF_SENDCHANGE); 	
	return CDialog::DestroyWindow();
}