(Unicode C++) SharePoint -- Check Out a File (or Undo a Checkout)

In SharePoint, you can check out a file to make sure nobody can change it before you update it. After updating, you can check in the file. This example shows how to check out a SharePoint file.

Note: To undo a checkout, replace the string "checkout" with "undocheckout" in the line of code that sets the request's path.

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

    // 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

    // This example will check out the file named "penguins2.jpg" 
    // which is located in the "/Documents" folder.

    CkHttpRequestW req;
    req.put_HttpVerb(L"POST");
    // Note that our path uses GetFileByServerRelativeUrl and not GetFolderByServerRelativeUrl
    // Also, if your Sharepoint site is within a site collection, the URL is formatted like this (where "teamA" is the name of the site)
    // /sites/teamA/_api/web/GetFileByServerRelativeUrl('/sites/teamA/Documents/penguins2.jpg')/checkout

    // Note: To undo a checkout, replace "checkout" with "undocheckout" in the following line of code.
    req.put_Path(L"/_api/web/GetFileByServerRelativeUrl('/Documents/penguins2.jpg')/checkout");

    // 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 POST using HTTPS (TLS). Port 443 is the default port for https.
    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;
    }

    // The response body contains XML.
    CkXmlW xml;
    xml.LoadXml(resp->bodyStr());

    if (resp->get_StatusCode() != 200) {
        wprintf(L"Response status code = %d\n",resp->get_StatusCode());
        wprintf(L"%s\n",xml.getXml());
        wprintf(L"Failed\n");
        delete resp;
        return;
    }

    delete resp;

    // Show the successful XML response.
    wprintf(L"%s\n",xml.getXml());
    wprintf(L"Success.\n");

    // A successful XML response looks like this:
    // <?xml version="1.0" encoding="utf-8" ?>
    // <d:CheckOut xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" 
    // 	xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata"
    // 	xmlns:georss="http://www.georss.org/georss" 
    // 	xmlns:gml="http://www.opengis.net/gml" m:null="true" />
    // 
    // 
    }