Obtain Version History Example (C++ COM)

This example shows how to obtain a version history of a file. IModelDoc2::IVersionHistory returns an array, so this code must be used in an in-process DLL.

DocumentVersionHistory(ISldWorks* m_pSldWorks)

{

 BSTR* versionHistStrings = NULL;

 LPMODELDOC2 pModelDoc = NULL;

 HRESULT hres= S_OK;

 hres = m_pSldWorks->get_IActiveDoc2(&pModelDoc);

 if (hres != S_OK || pModelDoc == NULL)

  return;

 int versHistCount = 0;

 hres = pModelDoc->IGetVersionHistoryCount(&versHistCount);

 if (hres != S_OK || versHistCount == 0)

 {

  pModelDoc->Release();

  return;

 }

 versionHistStrings = new BSTR[versHistCount];

 hres = pModelDoc->IVersionHistory(versionHistStrings);

 if (hres != S_OK || versionHistStrings == NULL)

 {

  delete [] versionHistStrings;

  pModelDoc->Release();

  return;

 }

 // For each version found

 for (int ii = 0;ii < versHistCount;ii++)  

 {

  CString tempstr2(versionHistStrings[ii]);

  AfxMessageBox (tempstr2);

  SysFreeString( versionHistStrings[ii]);

 }

 // default destructor

 pModelDoc->Release();

 delete [] versionHistStrings;

}