(MFC) Create GMail Draft

Demonstrates how to create a new GMail draft email.

Chilkat C/C++ Library Downloads

MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkEmail.h>
#include <CkStringBuilder.h>
#include <CkJsonObject.h>
#include <CkHttp.h>
#include <CkHttpResponse.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    bool success;

    // Use the Chilkat Email API to create or load an email.
    CkEmail email;
    email.put_Subject("This is a test GMail email created using Chilkat.");
    email.put_Charset("utf-8");
    email.AddPlainTextAlternativeBody("This is a test");
    email.AddHtmlAlternativeBody("<html><body><p>This is a <b>test</b></body></html>");

    // We'll need to get the full MIME of the email encoded to a base64url string.
    CkStringBuilder sbMime;
    email.GetMimeSb(sbMime);
    sbMime.Encode("base64url","utf-8");

    // The body of the HTTP request will be JSON..
    CkJsonObject json;
    json.UpdateSb("message.raw",sbMime);

    // Upload the email to GMail as a draft.
    CkHttp http;
    http.put_AuthToken("GMAIL-ACCESS-TOKEN");

    const char *url = "https://www.googleapis.com/gmail/v1/users/me/drafts";
    CkHttpResponse *resp = http.PostJson3(url,"application/json",json);
    if (http.get_LastMethodSuccess() != true) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // A status code of 200 indicates success.
    strOut.append("Response status code: ");
    strOut.appendInt(resp->get_StatusCode());
    strOut.append("\r\n");
    strOut.append("Response body:");
    strOut.append("\r\n");
    strOut.append(resp->bodyStr());
    strOut.append("\r\n");
    delete resp;

    // The response body contains JSON.
    // Use the online tool at Generate JSON Parsing Code
    // to generate JSON parsing code.

    // A sample successful JSON response:

    // {
    //  "id": "r-2607584557788895307",
    //  "message": {
    //   "id": "166f09932c662e93",
    //   "threadId": "166f09932c662e93",
    //   "labelIds": [
    //    "DRAFT"
    //   ]
    //  }
    // }


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }