miwindow.cpp

一种新的实现鹰眼图的方法

// MiWindow.cpp : implementation file
//

#include "stdafx.h"
#include "Gis.h"
#include "MiWindow.h"

#include "MyMapX.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMiWindow dialog
//进行事件处理
BEGIN_EVENTSINK_MAP(CMiWindow, CDialog)
//使用工具时的处理
//	ON_EVENT(CMiWindow, ID_MINMAP,WM_PAINT,OnTPaint)//当刷新图的时候
END_EVENTSINK_MAP()

CMiWindow::CMiWindow(CWnd* pParent /*=NULL*/)
	: CDialog(CMiWindow::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMiWindow)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	m_map = NULL;
}


void CMiWindow::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMiWindow)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMiWindow, CDialog)
	//{{AFX_MSG_MAP(CMiWindow)
	ON_WM_SIZE()
	ON_WM_CREATE()
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMiWindow message handlers

void CMiWindow::OnCancel() 
{
	ShowWindow(SW_HIDE);	
	//CDialog::OnCancel();
}

void CMiWindow::OnSize(UINT nType, int cx, int cy) 
{
	CDialog::OnSize(nType, cx, cy);
	
	m_map->MoveWindow(0,0,cx,cy);
}

CMiWindow::~CMiWindow()
{
	delete m_map;
}

int CMiWindow::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CDialog::OnCreate(lpCreateStruct) == -1)
		return -1;
	
		m_map = new CMapX;//CMyMapX;
		if(!m_map->Create(NULL,WS_VISIBLE,CRect(0,0,20,20),this,ID_MINMAP))
			return -1;
	
	return 0;
}

void CMiWindow::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	//进行坐标转换
	DrawEye();
	m_map->Invalidate();
	// Do not call CDialog::OnPaint() for painting messages
}

void CMiWindow::DrawEye()
{
	float x,y,x1,y1;

	CClientDC cdc(this);
//	CPaintDC cdc(this);
	m_map->ConvertCoord(&x,&y,&m_left,&m_top,miMapToScreen);
	m_map->ConvertCoord(&x1,&y1,&m_right,&m_bottom,miMapToScreen);
	//画出视窗范围
/*	m_map->m_top = x;
	m_map->m_left = y;
	m_map->m_right = x1;
	m_map->m_bottom = y1;
*/
	m_map->Invalidate();
	cdc.MoveTo(x,y);
	cdc.LineTo(x,y1);
	cdc.LineTo(x1,y1);
	cdc.LineTo(x1,y);
	cdc.LineTo(x,y);
}

void CMiWindow::OnTPaint()
{
	
}