• mfc 打/保存文件对话框 打开目录对话框 gdal基础


    // newgdalDlg.cpp : implementation file
    //

    #include "stdafx.h"
    #include "newgdal.h"
    #include "newgdalDlg.h"

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

    /////////////////////////////////////////////////////////////////////////////
    // CNewgdalDlg dialog

    CNewgdalDlg::CNewgdalDlg(CWnd* pParent /*=NULL*/)
        : CDialog(CNewgdalDlg::IDD, pParent)
    {
        //{{AFX_DATA_INIT(CNewgdalDlg)
            // NOTE: the ClassWizard will add member initialization here
        //}}AFX_DATA_INIT
        // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
        m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
    }

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

    BEGIN_MESSAGE_MAP(CNewgdalDlg, CDialog)
        //{{AFX_MSG_MAP(CNewgdalDlg)
        ON_WM_PAINT()
        ON_WM_QUERYDRAGICON()
        ON_BN_CLICKED(IDC_Ok, OnOk)
        ON_BN_CLICKED(IDC_BUTTON3, OnButton3)
        ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
        ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
        ON_BN_CLICKED(IDC_BUTTON4, OnButton4)
        //}}AFX_MSG_MAP
    END_MESSAGE_MAP()

    /////////////////////////////////////////////////////////////////////////////
    // CNewgdalDlg message handlers

    BOOL CNewgdalDlg::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
        
        // TODO: Add extra initialization here
        
        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 CNewgdalDlg::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 CNewgdalDlg::OnQueryDragIcon()
    {
        return (HCURSOR) m_hIcon;
    }

    void CNewgdalDlg::OnOK()
    {
        // TODO: Add extra validation here
        
        CDialog::OnOK();
    }

    void CNewgdalDlg::OnOk()
    {
        // TODO: Add your control notification handler code here
        int i, xSize, ySize;  
       //开始调用GDAL  
         GDALDataset *poDataset;  
        //注册  
         GDALAllRegister();  
       
        double geoInfo[6];  

        //CString FilePathName;
         //获得EDIT
        CEdit* pBoxOne;
        pBoxOne = (CEdit*) GetDlgItem(IDC_EDIT1);
         //赋值
        //pBoxOne->SetWindowText(FilePathName);
         //取值
         CString str;
         pBoxOne->GetWindowText(str);


        //打开文件获取数据集  
        //(GDALDataset *)与(GDALDataset* )都可以
        poDataset = (GDALDataset *)GDALOpen(str, GA_ReadOnly);  
     
         if(poDataset != NULL)  
         {  
             poDataset->GetRasterBand(1)->GetNoDataValue(&i);  
     
             //获取图像的长宽像素值  
             xSize = poDataset->GetRasterXSize();  
             ySize = poDataset->GetRasterYSize();  
             poDataset->GetGeoTransform(geoInfo);  
            
             //AfxMessageBox("good");
             //    geoInfo[0] /* top left x, 图像左上角x坐标值*/  
             //    geoInfo[1] /* w-e pixel resolution,图像横坐标 ?米/每像素 */  
            //    geoInfo[2] /* rotation, 0 if image is "north up" */  
            //    geoInfo[3] /* top left y 图像左上角y坐标值*/  
             //    geoInfo[4] /* rotation, 0 if image is "north up"  */  
             //    geoInfo[5] /* n-s pixel resolution 图像纵坐标 ?米/每像素*/  
         }  
         else  
        {  
            exit(1);  
         }
        
         CString strxSize;
         strxSize.Format("%d",xSize);

         //获得EDIT
        CEdit* pBoxOne3;
        pBoxOne3 = (CEdit*) GetDlgItem(IDC_EDIT3);
         //赋值
        pBoxOne3->SetWindowText(strxSize);


         CString strySize;
         strySize.Format("%d",ySize);

         //获得EDIT
        CEdit* pBoxOne4;
        pBoxOne4 = (CEdit*) GetDlgItem(IDC_EDIT4);
         //赋值
        pBoxOne4->SetWindowText(strySize);

        
    }

    void CNewgdalDlg::OnButton3()
    {
        // TODO: Add your control notification handler code here
       //AfxMessageBox("good");


        
    }



    void CNewgdalDlg::OnButton1()
    {
        // TODO: Add your control notification handler code here
        CString FilePathName;
        CFileDialog dlg(TRUE);///TRUE为OPEN对话框,FALSE为SAVE AS对话框
        if(dlg.DoModal()==IDOK)
        FilePathName=dlg.GetPathName();
        
        //获得EDIT
        CEdit* pBoxOne;
        pBoxOne = (CEdit*) GetDlgItem(IDC_EDIT1);
         //赋值
        pBoxOne->SetWindowText(FilePathName);
         //取值
         CString str;
         pBoxOne->GetWindowText(str);



    }

    void CNewgdalDlg::OnButton2()
    {
        // TODO: Add your control notification handler code here
        // BROWSEINFO 结构
        ////////////////////////////////////
        // typedef struct _browseinfo {
        //   HWND hwndOwner;
        //   LPCITEMIDLIST pidlRoot;
        //   LPSTR pszDisplayName;
        //   LPCSTR lpszTitle;
        //   UINT ulFlags;
        //   BFFCALLBACK lpfn;
        //   LPARAM lParam;
        //   int iImage;
        //   } BROWSEINFO;
        ///////////////////////////////////


        CString sFolderPath;
        BROWSEINFO bi;
        char Buffer[MAX_PATH];

        //初始化入口参数bi开始
        bi.hwndOwner = NULL;
        bi.pidlRoot =NULL;//初始化制定的root目录很不容易,
        bi.pszDisplayName = Buffer;//此参数如为NULL则不能显示对话框
        bi.lpszTitle = "修改接收路径";
        //bi.ulFlags = BIF_BROWSEINCLUDEFILES;//包括文件
        bi.ulFlags = BIF_EDITBOX;//包括文件

        bi.lpfn = NULL;
        bi.iImage=IDR_MAINFRAME;
        //初始化入口参数bi结束
        LPITEMIDLIST pIDList = SHBrowseForFolder(&bi);//调用显示选择对话框
        if(pIDList)
        {
           SHGetPathFromIDList(pIDList, Buffer);
           //取得文件夹路径到Buffer里
           sFolderPath = Buffer;//将路径保存在一个CString对象里
        }
        LPMALLOC lpMalloc;
        if(FAILED(SHGetMalloc(&lpMalloc))) return;
        //释放内存
        lpMalloc->Free(pIDList);
        lpMalloc->Release();

        //MessageBox(sFolderPath,"Title",MB_OK);

        //获得EDIT
        CEdit* pBoxOne;
        pBoxOne = (CEdit*) GetDlgItem(IDC_EDIT2);
         //赋值
        pBoxOne->SetWindowText(sFolderPath);
         //取值
         CString str;
         pBoxOne->GetWindowText(str);



    }

    void CNewgdalDlg::OnButton4()
    {
        // TODO: Add your control notification handler code here
         OGRRegisterAll();
         OGRDataSource  *poDS;
         CString file="C:\\Documents and Settings\\zhangjun\\桌面\\1738 shp\\复件 原始影像数据矢量文件.shp";
         poDS = OGRSFDriverRegistrar::Open(file,FALSE);
         if( poDS == NULL )
         {
            printf( "Open failed.\n" );
            exit( 1 );
         }

              OGRLayer  *poLayer;

        poLayer = poDS->GetLayerByName( "复件 原始影像数据矢量文件" );

        OGRFeature *poFeature;

        poLayer->ResetReading();
        while( (poFeature = poLayer->GetNextFeature()) != NULL )
        {
            OGRFeatureDefn *poFDefn = poLayer->GetLayerDefn();
            int iField;

            for( iField = 0; iField < poFDefn->GetFieldCount(); iField++ )
            {
                OGRFieldDefn *poFieldDefn = poFDefn->GetFieldDefn( iField );

                if( poFieldDefn->GetType() == OFTInteger )
                    printf( "%d,", poFeature->GetFieldAsInteger( iField ) );
                else if( poFieldDefn->GetType() == OFTReal )
                    printf( "%.3f,", poFeature->GetFieldAsDouble(iField) );
                else if( poFieldDefn->GetType() == OFTString )
                {  
                    printf( "%s,", poFeature->GetFieldAsString(iField) );
                    AfxMessageBox(poFeature->GetFieldAsString(iField));

                }
                else
                    printf( "%s,", poFeature->GetFieldAsString(iField) );
            }

            OGRGeometry *poGeometry;

            poGeometry = poFeature->GetGeometryRef();
            if( poGeometry != NULL
                && wkbFlatten(poGeometry->getGeometryType()) == wkbPoint )
            {
                OGRPoint *poPoint = (OGRPoint *) poGeometry;

                printf( "%.3f,%3.f\n", poPoint->getX(), poPoint->getY() );
            }
            else
            {
                printf( "no point geometry\n" );
            }       
            OGRFeature::DestroyFeature( poFeature );
        }

        OGRDataSource::DestroyDataSource( poDS );

        
    }


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  • 原文地址:https://www.cnblogs.com/zhangjun1130/p/1893947.html
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