Persist ActiveX Controls At Runtime

I was writing a piece of code to store and load user preferences and wanted to persist the properties of some ActiveX controls on my dialog. The following procedure seems to do the job rather nicely.

BOOL PersistActiveX(CArchive& ar, CWnd* pActiveX)
{
 ASSERT(pActiveX);

 HRESULT hr = E_FAIL;

 // Create an archive stream
 CArchiveStream stm(&ar);
 LPPERSISTSTREAMINIT pPersStm = NULL;
 LPUNKNOWN lpUnk = pActiveX->GetControlUnknown();

 if(lpUnk)
 {
  // We have the IUnknown interface, so 
  // get the IPersistStreamInit
  lpUnk->QueryInterface(IID_IPersistStreamInit, 
                        (LPVOID*)&pPersStm);

  if(pPersStm)
  {
   // We have the relevant interface so load or save the data
   // based on the type of archive we have.
   if(ar.IsLoading())
   {
    hr = pPersStm->Load(&stm);
   }
   else
   {
    hr = pPersStm->Save(&stm, FALSE);
   }
  }

  // Must release the interface
  pPersStm->Release();
 }

 return SUCCEEDED(hr);
}
This can then be called simply by doing the following:
PersistActiveX(ar, GetDlgItem(IDC_SOMEACTIVEX));


Comments

  • Persistence CArray in ActiveX

    Posted by Legacy on 01/18/2004 12:00am

    Originally posted by: Diego

    Do you know how can I save a CArray in to the persistance of the ActiveX - PX_Blob????

    Thanks

    • hello

      Posted by tqqttq on 05/30/2005 03:06am

      good

      Reply
    Reply
  • Problem with successive serializing...

    Posted by Legacy on 09/14/2001 12:00am

    Originally posted by: Lez

    Hello,

    I'm using this function for serializing (loading) MFC ActiveX components. It Works great with the first component but i dont know why all others doesn't. It seems that the File (or the archive) is closing by the line pStream->Load(&stm).
    Does anyone have a solution ?

    Reply
  • How to use Web Browser control in ATL?

    Posted by Legacy on 10/09/2000 12:00am

    Originally posted by: Peng Fei

    Hi,

    I need use Web Browser control in my ATL,
    but I cannot create the dialog with Web Browser.

    Please give me a solution.

    regards

    Reply
  • Persist ActiveX Controls at Runtime

    Posted by Legacy on 02/28/2000 12:00am

    Originally posted by: kiran

    It is not mentioned as to how the CArchive object is created.

    Reply
  • CArchiveStream

    Posted by Legacy on 02/21/2000 12:00am

    Originally posted by: Erling Eybye

    CArchiveStream ??? is this class a MFC class ?
    I can't find it on Microsoft's homepage.

    Reply
Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Learn How A Global Entertainment Company Saw a 448% ROI Every business today uses software to manage systems, deliver products, and empower employees to do their jobs. But software inevitably breaks, and when it does, businesses lose money -- in the form of dissatisfied customers, missed SLAs or lost productivity. PagerDuty, an operations performance platform, solves this problem by helping operations engineers and developers more effectively manage and resolve incidents across a company's global operations. …

  • Live Event Date: December 18, 2014 @ 2:00 p.m. ET / 11:00 a.m. PT The Internet of Things (IoT) incorporates physical devices into business processes using predictive analytics. While it relies heavily on existing Internet technologies, it differs by including physical devices, specialized protocols, physical analytics, and a unique partner network. To capture the real business value of IoT, the industry must move beyond customized projects to general patterns and platforms. Check out this upcoming webcast …

Most Popular Programming Stories

More for Developers

RSS Feeds