(MFC) Google Sheets - Read a Single Range

Reads the values stored in the range Sheet1!A1:B5 and returns them in the response.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkJsonObject.h>
#include <CkHttp.h>

void ChilkatSample(void)
    {
    CkString strOut;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    //  This example uses a previously obtained access token having permission for the
    //  Google Sheets scope.

    //  In this example, Get Google Sheets OAuth2 Access Token, the access
    //  token was saved to a JSON file.  This example fetches the access token from the file..
    CkJsonObject jsonToken;
    bool success = jsonToken.LoadFile("qa_data/tokens/googleSheets.json");
    if (jsonToken.HasMember("access_token") == false) {
        strOut.append("No access token found.");
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    CkHttp http;
    http.put_AuthToken(jsonToken.stringOf("access_token"));

    //  Get the cells defined by the range A1:B5
    const char *jsonResponse = http.quickGetStr("https://sheets.googleapis.com/v4/spreadsheets/spreadsheetId/values/Sheet1!A1:B5");
    if (http.get_LastMethodSuccess() != true) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    strOut.append(jsonResponse);
    strOut.append("\r\n");

    CkJsonObject json;
    json.Load(jsonResponse);

    //  A sample response is shown below.
    //  To generate the parsing source code for a JSON response, paste
    //  the JSON into this online tool: Generate JSON parsing code

    //  {
    //    "range": "Sheet1!A1:B5",
    //    "majorDimension": "ROWS",
    //    "values": [
    //      [
    //        "Item",
    //        "Cost"
    //      ],
    //      [
    //        "Wheel",
    //        "$20.50"
    //      ],
    //      [
    //        "Door",
    //        "$15"
    //      ],
    //      [
    //        "Engine",
    //        "$100"
    //      ],
    //      [
    //        "Totals",
    //        "$135.50"
    //      ]
    //    ]
    //  }

    int i;
    int count_i;
    int j;
    int count_j;

    const char *range = json.stringOf("range");
    const char *majorDimension = json.stringOf("majorDimension");
    i = 0;
    count_i = json.SizeOfArray("values");
    while (i < count_i) {
        json.put_I(i);
        j = 0;
        count_j = json.SizeOfArray("values[i]");
        while (j < count_j) {
            json.put_J(j);
            const char *strVal = json.stringOf("values[i][j]");
            j = j + 1;
        }

        i = i + 1;
    }



    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }