geoexpertview.cpp

VC+MapX实现简单功能以及地图指定经纬度图元显示功能

		pCmdUI->Enable(FALSE);
	}
	pCmdUI->SetCheck(m_ctrlMapX.GetCurrentTool() == miPanTool);
}


void CGeoExpertView::OnUpdateMapToolSelect(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	if (m_ctrlMapX.m_hWnd != NULL)
	{
		pCmdUI->Enable(TRUE);
	}
	else
	{
		pCmdUI->Enable(FALSE);
	}
	pCmdUI->SetCheck(m_ctrlMapX.GetCurrentTool() == miSelectTool);
}

void CGeoExpertView::OnUpdateMapToolRectangleselect(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	if (m_ctrlMapX.m_hWnd != NULL)
	{
		pCmdUI->Enable(TRUE);
	}
	else
	{
		pCmdUI->Enable(FALSE);
	}
	pCmdUI->SetCheck(m_ctrlMapX.GetCurrentTool() == miRectSelectTool);
}

void CGeoExpertView::OnUpdateMapToolRadiusselect(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	if (m_ctrlMapX.m_hWnd != NULL)
	{
		pCmdUI->Enable(TRUE);
	}
	else
	{
		pCmdUI->Enable(FALSE);
	}
	pCmdUI->SetCheck(m_ctrlMapX.GetCurrentTool() == miRadiusSelectTool);
}

void CGeoExpertView::OnUpdateMapToolPolygonselect(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	if (m_ctrlMapX.m_hWnd != NULL)
	{
		pCmdUI->Enable(TRUE);
	}
	else
	{
		pCmdUI->Enable(FALSE);
	}
	pCmdUI->SetCheck(m_ctrlMapX.GetCurrentTool() == miPolygonSelectTool);
}

void CGeoExpertView::OnUpdateMapToolCenter(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	if (m_ctrlMapX.m_hWnd != NULL)
	{
		pCmdUI->Enable(TRUE);
	}
	else
	{
		pCmdUI->Enable(FALSE);
	}
	pCmdUI->SetCheck(m_ctrlMapX.GetCurrentTool() == miCenterTool);
}

void CGeoExpertView::OnViewProjection() 
{
	// TODO: Add your command handler code here
	try {
		VARIANT vHelpFile, vHelpID;		// mark as optional since we don't have a helpfile
		vHelpFile.vt = VT_ERROR;
		vHelpFile.scode = DISP_E_PARAMNOTFOUND;
		vHelpID.vt = VT_ERROR;
		vHelpID.scode = DISP_E_PARAMNOTFOUND;

		CMapXCoordSys csys = m_ctrlMapX.GetDisplayCoordSys();
		csys.PickCoordSys(vHelpFile, vHelpID);
		
		m_ctrlMapX.SetNumericCoordSys(csys);
	}
	catch (COleDispatchException *e) {
		e->ReportError();
		e->Delete();
	}
	catch (COleException *e) {
		e->ReportError();
		e->Delete();
	}
}

void CGeoExpertView::OnViewProperties() 
{
	// TODO: Add your command handler code here
	try {
		m_ctrlMapX.PropertyPage();
	}
	catch (COleDispatchException *e) {
		e->ReportError();
		e->Delete();
	}
	catch (COleException *e) {
		e->ReportError();
		e->Delete();
	}
}

void CGeoExpertView::OnMapToolInfotool() 
{
	// TODO: Add your command handler code here
	m_ctrlMapX.SetCurrentTool(INFO_TOOL);
	if (!m_bInfoDlg)
	{
		m_InfoDlg = new CInfoDlg;
		m_InfoDlg->Create(IDD_INFO_DLG,NULL);
		m_InfoDlg->ShowWindow(SW_SHOW);
		m_InfoDlg->OnInitDlg();

		m_bInfoDlg = TRUE;
	}
}

void CGeoExpertView::OnViewLayercontrol() 
{
	// TODO: Add your command handler code here
	try {
		VARIANT vHelpFile, vHelpID;		// mark as optional since we don't have a helpfile
		vHelpFile.vt = VT_ERROR;
		vHelpFile.scode = DISP_E_PARAMNOTFOUND;
		vHelpID.vt = VT_ERROR;
		vHelpID.scode = DISP_E_PARAMNOTFOUND;
		CMapXLayers layers = m_ctrlMapX.GetLayers();
		layers.LayersDlg(vHelpFile, vHelpID);
	}
	catch (COleDispatchException *e) {
		e->ReportError();
		e->Delete();
	}
	catch (COleException *e) {
		e->ReportError();
		e->Delete();
	}
}

void CGeoExpertView::OnInfoToolUsed(short ToolNum, double X1, double Y1, double X2, double Y2, double Distance, BOOL Shift, BOOL Ctrl, BOOL *EnableDefault)
{
	if (ToolNum == INFO_TOOL) 
	{
		int iCount = 0;
		iCount = m_ctrlMapX.GetLayers().GetCount();
		CMapXPoint pt;		//This point will be the center of our search
		CMapXFeatures fs;	//This will hold all of the features within our search
		CMapXFeature f;		//This will hold the customer feature we are currently
		CMapXLayer layer;
		pt.CreateDispatch(pt.GetClsid());	//Creates a dispatch for the point
		pt.Set(X1,Y1);						//Sets the coordinates into the point

		double dLayerZoomMax,dLayerZoomMin;
		double dMapZoom;

		dMapZoom = m_ctrlMapX.GetZoom();

		for (int i = 1; i <= iCount; i++)
		{
			layer = m_ctrlMapX.GetLayers().Item(i);
			dLayerZoomMax = layer.GetZoomMax();
			dLayerZoomMin = layer.GetZoomMin();

			if ((dLayerZoomMax >= dMapZoom && dLayerZoomMin <= dMapZoom) || (dLayerZoomMax == 0 && dLayerZoomMin == 0))
			{
				fs = m_ctrlMapX.GetLayers().Item(i).SearchAtPoint(pt);
			
				if(fs.GetCount() != 0)
				{
					CString buffer;
					CMapXDataset ds;
					
					f = fs.Item(1);

					layer = f.GetLayer();
					COleVariant layerVt;
					layerVt.vt = VT_DISPATCH;
					layerVt.pdispVal = layer.m_lpDispatch;
					layerVt.pdispVal->AddRef();
					
					ds = m_ctrlMapX.GetDatasets().Add(miDataSetLayer, layerVt);

					m_InfoDlg->m_ctrlInfoList.DeleteAllItems();
					
					COleVariant ValueVt;
					int iFieldCount = ds.GetFields().GetCount();
					for (int i = 0; i < iFieldCount; i++)
					{
						buffer = ds.GetFields().Item(i+1).GetName();
						m_InfoDlg->m_ctrlInfoList.InsertItem(i,buffer);

						COleVariant vVal;
						for (int j = 0; j < iFieldCount; j++)
						{
							vVal = ds.GetValue(f.GetFeatureID(), j+1);
							vVal.ChangeType(VT_BSTR);
							buffer = vVal.bstrVal;

							m_InfoDlg->m_ctrlInfoList.SetItemText(j,1,buffer);
						} // end for (int j = 0; j < iFieldCount; j++)
						
					} // end for (int i = 0; i < iFieldCount; i++)
					
					break;

				} // end if(fs.GetCount() != 0)

			} // end if (dLayerZoomMax >= dMapZoom && dLayerZoomMin <= dMapZoom)

		} // end for (int i = 1; i <= iCount; i++)
		
	} // end if (ToolNum == INFO_TOOL)
}

void CGeoExpertView::OnUpdateMapToolInfotool(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	if (m_ctrlMapX.m_hWnd != NULL)
	{
		pCmdUI->Enable(TRUE);
	}
	else
	{
		pCmdUI->Enable(FALSE);
	}
	pCmdUI->SetCheck(m_ctrlMapX.GetCurrentTool() == INFO_TOOL);
}

void CGeoExpertView::OnInitialUpdate() 
{
	CView::OnInitialUpdate();
	
	// TODO: Add your specialized code here and/or call the base class
	OnFileOpen();
}
//
void CGeoExpertView::OnToolTest() 
{
	/*
	try 
	{
		CMapXFeature f;
		// create a new symbol or text feature
		// first create the standalone feature object

		f.CreateDispatch(f.GetClsid());
    
		// attach standalone feature to map, as required in V3
		f.Attach(m_ctrlMapX.GetDispatch());
		
		///f.SetType(miFeatureTypeSymbol);
	
		f.SetType(miFeatureTypeText);
		f.SetCaption("Text");

		// set the style and location of the feature
		f.SetStyle(m_ctrlMapX.GetDefaultStyle());
		f.GetPoint().Set(122.1419,37.4419);
   
		// now add it to our layer
		CMapXLayer layer = m_ctrlMapX.GetLayers().Item("Asia Capitals");

		layer.AddFeature (f);
	}
	catch (COleDispatchException *e) 
	{
		e->ReportError();
		e->Delete();
	}
	catch (COleException *e) 
	{
		e->ReportError();
		e->Delete();
	}
	*/
	
	CMapXLayers layers = m_ctrlMapX.GetLayers();
	CMapXFeature ftr;
	try
	{
		if (ftr.CreateDispatch(ftr.GetClsid())) 
		{
			ftr = m_ctrlMapX.GetFeatureFactory().CreateSymbol();
			ftr.SetStyle(m_ctrlMapX.GetDefaultStyle());
		    CMapXStyle style = ftr.GetStyle(); //获得图元的风格
		    //设置图元的风格，显示位图
		    style.SetSymbolType(miSymbolTypeBitmap);
		    //指定所要显示位图的存放位置
		    style.SetSymbolBitmapName("C:\\test.bmp");
		    //指定位图大小
		    style.SetSymbolBitmapSize(10); ////注意，不能大于48,否则出错
		    //设置为透明
		    style.SetSymbolBitmapTransparent(TRUE);

		    //指定需要显示图元的位置（经纬度位置）
		    ftr.GetPoint().Set(122.1419,37.4419);//学四东北角
		    layers.Item("Asia Capitals").AddFeature(ftr);
		}
	    else
		{
	 	    AfxThrowOleException(CO_E_CLASS_CREATE_FAILED);
		}
	}

    catch (COleDispatchException *e) 
	{
	    e->ReportError();
	    e->Delete();
	}
    catch (COleException *e) 
	{
	    e->ReportError();
	    e->Delete();
	}
}


void CGeoExpertView::OnViewTooltest() 
{
	// TODO: Add your command handler code here
	OnToolTest();
}