(Unicode C++) SharePoint -- Approve a File Submitted for Content Approval

Approves the file submitted for content approval with the specified comment.

Note: The SharePoint list or library should have the settings enabled to require approval for submitted items. This is done in the "Versioning Settings" for the list or library.

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#include <CkHttpW.h>
#include <CkHttpRequestW.h>
#include <CkHttpResponseW.h>
#include <CkJsonObjectW.h>

void ChilkatSample(void)
    {
    //  This requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    CkHttpW http;

    //  If SharePoint Windows classic authentication is used, then set the
    //  Login, Password, LoginDomain, and NtlmAuth properties.
    http.put_Login(L"SHAREPOINT_USERNAME");
    http.put_Password(L"SHAREPOINT_PASSWORD");
    http.put_LoginDomain(L"SHAREPOINT_NTLM_DOMAIN");
    http.put_NtlmAuth(true);

    //  The more common case is to use SharePoint Online authentication (via the SPOIDCRL cookie).
    //  If so, do not set Login, Password, LoginDomain, and NtlmAuth, and instead
    //  establish the cookie as shown at SharePoint Online Authentication

    //  Indicate that we want a JSON reply
    http.put_Accept(L"application/json;odata=verbose");

    //  Only persons who have Full Control or Design permissions can approve or reject
    //  items or files in a list or library that requires approval. Other site users
    //  can only view what they have permission to view or what they have uploaded
    //  themselves.
    // 
    //  Important:  Approval or rejection of items or files in lists or libraries must
    //  be done one at a time. You cannot approve or reject multiple items or files in
    //  one operation.
    // 

    CkHttpRequestW req;
    req.put_HttpVerb(L"POST");
    req.put_Path(L"/_api/web/GetFileByServerRelativeUrl('/ChilkatDocLibrary/sample.docx')/approve(comment='Check-in comment for the approval.')");

    //  We need to add a form digest value in the X-RequestDigest header field.
    //  See this example for details on
    //  how to get (and cache) a form digest value
    req.AddHeader(L"X-RequestDigest",L"SHAREPOINT_FORM_DIGEST");

    //  Send the request to approve the document.
    bool bUseTls = true;
    CkHttpResponseW *resp = http.SynchronousRequest(L"SHAREPOINT_HTTPS_DOMAIN",443,bUseTls,req);
    if (http.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    //  A successful update will return a 200 status code with an empty body.
    //  A non-successful update will return a JSON response body..
    if (resp->get_StatusCode() != 200) {
        wprintf(L"Response status code = %d\n",resp->get_StatusCode());
        CkJsonObjectW json;
        json.Load(resp->bodyStr());
        json.put_EmitCompact(false);
        wprintf(L"%s\n",json.emit());
        wprintf(L"Failed\n");
        delete resp;
        return;
    }

    delete resp;

    wprintf(L"Success.\n");
    }