VC6.0制作MapX自定义工具(测距工具)

申明：

本人在网上找了很多例子，就这个比较完整，经过调试无误，遂贴出来供大家参考，让大家少走弯路（注意要先加载地图）。

参考博客：http://blog.csdn.net/fengrx/archive/2009/05/09/4163187.aspx

以下文章前部分是原文作者的，后部分是本人结合具体细节添加的，也算是对原文的一个完善。

 

制作自定义工具是MapX编程中一个很重要的部分，其步骤比较简单，但很多人很容易忽略其中的部分步骤，使得此功能难以实现。具体可以按以下步骤来做，本人在做这一功能时花费时间颇多，因为大部分介绍这一功能的文章都忽略了其中第三步骤，使得初学者很难成功实现。


     故在原来基础上加以完善，使得步骤更加详细。其他自定义工具可以按照类似步骤来做。


//1.定义常量
#define MYTOOL_DISTANCE 100 //1~999


//2.创建工具
m_ctrlMap.CreateCustomTool(MYTOOL_DISTANCE,miToolTypePoly,miCrossCursor);


//3.创建事件槽
在View.h中，在DECLARE_MESSAGE_MAP()行下边加入一行代码：DECLARE_EVENTSINK_MAP()

在View.cpp中，加入

BEGIN_EVENTSINK_MAP(CPatrolCheckView, CView)
 ON_EVENT(CPatrolCheckView, IDC_MAP, 11/*MAPX_DISPID_POLYTOOLUSED*/, OnPolyToolUsedMap, 
VTS_I2 VTS_I4  VTS_DISPATCH VTS_BOOL VTS_BOOL VTS_PBOOL)
 END_EVENTSINK_MAP()


 
//4.响应事件
在View.h中添加 void OnPolyToolUsedMap(short ToolNum, long Flags, LPDISPATCH Points,BOOL 


bShift,BOOL bCtrl,BOOL FAR* EnableDefault);
在View.cpp中，加入实现代码
void CMapXSampleView::OnPolyToolUsedMap(short ToolNum, long Flags, LPDISPATCH Points,
BOOL bShift,BOOL bCtrl,BOOL FAR* EnableDefault)
{
//计算距离
if(Flags==miPolyToolInProgress) {//这句可有可无
if(ToolNum==MYTOOL_DISTANCE)
{
CMapXPoints pts;
long n;
long i;
try{
pts.AttachDispatch (Points, FALSE); // Get points Object
double dDistanceTot=0.0;
n=pts.GetCount ();
m_ctrlMapX.SetMapUnit(miUnitKilometer);
for (i=1; i<n;i++)
{
CMapXPoint pt1=pts.Item(i);
CMapXPoint pt2=pts.Item(i+1);
double d=m_ctrlMapX.Distance (pt1.GetX(),pt1.GetY(),pt2.GetX (),
pt2.GetY ());
dDistanceTot+=d;  
}
CString str;
str.Format ("总距离为：%f",dDistanceTot);
//在状态栏输出距离
((CMainFrame*)AfxGetMainWnd())->m_wndStatusBar.SetPaneText(0,str); //要先将m_wndStatusBar设


为public
}
catch (COleDispatchException *e){
e->ReportError ();
e->Delete ();
}
catch (COleException *e){
e->ReportError ();
e->Delete ();
}
}
}//if(Flags==miPolyToolInProgress) 
}


//5.调用工具
void CMapXSampleView::OnMapToolDistancetool() 
{
m_ctrlMapX.SetCurrentTool(MYTOOL_DISTANCE); // 


} 

注意：ON_EVENT(CPatrolCheckView, IDC_MAP, 11/*MAPX_DISPID_POLYTOOLUSED*/, OnPolyToolUsedMap, 中标红的地方，具体工具类型的判断在OnPolyToolUsedMap中进行

以上部分参考：CSDN博客，转载请标明出处：http://blog.csdn.net/fengrx/archive/2009/05/09/4163187.aspx

下面是我完整的代码：

// TestTView.h : interface of the CTestTView class///////////////////////////////////////////////////////////////////////////////#if !defined(AFX_TESTTVIEW_H__605D4332_7071_4CE3_9EFE_73D15BB50061__INCLUDED_)#define AFX_TESTTVIEW_H__605D4332_7071_4CE3_9EFE_73D15BB50061__INCLUDED_#if _MSC_VER > 1000#pragma once#endif // _MSC_VER > 1000#include "MapX.h"#include "MainFrm.h"class CTestTView : public CView{protected: // create from serialization onlyCTestTView();DECLARE_DYNCREATE(CTestTView)// Attributespublic:CTestTDoc* GetDocument();// Operationspublic:// Overrides// ClassWizard generated virtual function overrides//{{AFX_VIRTUAL(CTestTView)public:virtual void OnDraw(CDC* pDC);  // overridden to draw this viewvirtual BOOL PreCreateWindow(CREATESTRUCT& cs);protected:virtual BOOL OnPreparePrinting(CPrintInfo* pInfo);virtual void OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo);virtual void OnEndPrinting(CDC* pDC, CPrintInfo* pInfo);//}}AFX_VIRTUAL// Implementationpublic:BOOL OnToolTest();void OnPolyToolUsedMap(short ToolNum, long Flags, LPDISPATCH Points,BOOL bShift,BOOL bCtrl,BOOL FAR* EnableDefault);virtual ~CTestTView();#ifdef _DEBUGvirtual void AssertValid() const;virtual void Dump(CDumpContext& dc) const;#endifprotected:private:CMapX m_ctrlMapX;// Generated message map functionsprotected://{{AFX_MSG(CTestTView)afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);afx_msg void OnTest();afx_msg void OnSize(UINT nType, int cx, int cy);//}}AFX_MSGDECLARE_MESSAGE_MAP()DECLARE_EVENTSINK_MAP()};#ifndef _DEBUG  // debug version in TestTView.cppinline CTestTDoc* CTestTView::GetDocument()   { return (CTestTDoc*)m_pDocument; }#endif///////////////////////////////////////////////////////////////////////////////{{AFX_INSERT_LOCATION}}// Microsoft Visual C++ will insert additional declarations immediately before the previous line.#endif // !defined(AFX_TESTTVIEW_H__605D4332_7071_4CE3_9EFE_73D15BB50061__INCLUDED_)

// TestTView.cpp : implementation of the CTestTView class//#include "stdafx.h"#include "TestT.h"#include "TestTDoc.h"#include "TestTView.h"#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = __FILE__;#endif/////////////////////////////////////////////////////////////////////////////// CTestTViewIMPLEMENT_DYNCREATE(CTestTView, CView)BEGIN_MESSAGE_MAP(CTestTView, CView)//{{AFX_MSG_MAP(CTestTView)ON_WM_CREATE()ON_COMMAND(ID_TEST, OnTest)ON_WM_SIZE()//}}AFX_MSG_MAP// Standard printing commandsON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)END_MESSAGE_MAP()BEGIN_EVENTSINK_MAP(CTestTView,CView)ON_EVENT(CTestTView,IDC_MAP,MAPX_DISPID_POLYTOOLUSED,OnPolyToolUsedMap,VTS_I2 VTS_I4  VTS_DISPATCH VTS_BOOL VTS_BOOL VTS_PBOOL)END_EVENTSINK_MAP()// CTestTView construction/destructionCTestTView::CTestTView(){// TODO: add construction code here}CTestTView::~CTestTView(){}BOOL CTestTView::PreCreateWindow(CREATESTRUCT& cs){// TODO: Modify the Window class or styles here by modifying//  the CREATESTRUCT csreturn CView::PreCreateWindow(cs);}/////////////////////////////////////////////////////////////////////////////// CTestTView drawingvoid CTestTView::OnDraw(CDC* pDC){CTestTDoc* pDoc = GetDocument();ASSERT_VALID(pDoc);// TODO: add draw code for native data here}/////////////////////////////////////////////////////////////////////////////// CTestTView printingBOOL CTestTView::OnPreparePrinting(CPrintInfo* pInfo){// default preparationreturn DoPreparePrinting(pInfo);}void CTestTView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/){// TODO: add extra initialization before printing}void CTestTView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/){// TODO: add cleanup after printing}/////////////////////////////////////////////////////////////////////////////// CTestTView diagnostics#ifdef _DEBUGvoid CTestTView::AssertValid() const{CView::AssertValid();}void CTestTView::Dump(CDumpContext& dc) const{CView::Dump(dc);}CTestTDoc* CTestTView::GetDocument() // non-debug version is inline{ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CTestTDoc)));return (CTestTDoc*)m_pDocument;}#endif //_DEBUG/////////////////////////////////////////////////////////////////////////////// CTestTView message handlersint CTestTView::OnCreate(LPCREATESTRUCT lpCreateStruct) {if(!m_ctrlMapX.Create(NULL,WS_VISIBLE,CRect(0,0,100,100),this,IDC_MAP))return -1;m_ctrlMapX.SetGeoSet("CHINA.GST");m_ctrlMapX.SetTitleText("");//创建自定义工具m_ctrlMapX.CreateCustomTool(DRAG_TOOL,miToolTypePoly,miCrossCursor);// TODO: Add your specialized creation code here   miSizeAllCursorif (CView::OnCreate(lpCreateStruct) == -1)return -1;return 0;}void CTestTView::OnPolyToolUsedMap(short ToolNum, long Flags, LPDISPATCH Points,BOOL bShift,BOOL bCtrl,BOOL FAR*  EnableDefault){((CMainFrame*)AfxGetMainWnd())->m_wndStatusBar.SetPaneText(0,"开始计算");//计算距离//if(Flags==miPolyToolInProgress) {//这句可有可无if(ToolNum==DRAG_TOOL){CMapXPoints pts;long n;long i;try{pts.AttachDispatch (Points, FALSE); // Get points Objectdouble dDistanceTot=0.0;n=pts.GetCount ();m_ctrlMapX.SetMapUnit(miUnitKilometer);for (i=1; i<n;i++){CMapXPoint pt1=pts.Item(i);CMapXPoint pt2=pts.Item(i+1);double d=m_ctrlMapX.Distance (pt1.GetX(),pt1.GetY(),pt2.GetX (),pt2.GetY ());dDistanceTot+=d;  }CString str;str.Format ("总距离为：%f",dDistanceTot);//在状态栏输出距离((CMainFrame*)AfxGetMainWnd())->m_wndStatusBar.SetPaneText(0,str); //要先将m_wndStatusBar设为public}catch (COleDispatchException *e){e->ReportError ();e->Delete ();}catch (COleException *e){e->ReportError ();e->Delete ();}// }}//if(Flags==miPolyToolInProgress) }void CTestTView::OnTest() {// TODO: Add your command handler code herem_ctrlMapX.SetCurrentTool(DRAG_TOOL);((CMainFrame*)AfxGetMainWnd())->m_wndStatusBar.SetPaneText(0,"gooooooooood");}void CTestTView::OnSize(UINT nType, int cx, int cy) {CView::OnSize(nType, cx, cy);// TODO: Add your message handler code hereif (cx!=0&&cy!=0){m_ctrlMapX.MoveWindow(0,0,cx,cy,TRUE);}}BOOL CTestTView::OnToolTest(){MessageBox("goood test");return TRUE;}