Accessing Support Files and Project Files Search Paths

By Madhukar Moogala

I have received a recent query on how to programmatically accessing support and project files which are available in OptionsFiles tab.

We can leverage ActiveX API  AcadPreferences.Files to get access on support and project files.

To get information on Support Files Search Path either we can using Acad system variable “ACADPREFIX” or following code:

void TestProj()    {    HRESULT hr;    try    {         AutoCAD::IAcadApplication *pAcad =NULL;    hr = NOERROR;    LPUNKNOWN pUnk = NULL;    LPDISPATCH pAcadDisp = acedGetIDispatch(TRUE);     if(pAcadDisp==NULL)    return ;         hr = pAcadDisp->QueryInterface(AutoCAD::IID_IAcadApplication,                                   (void**)&pAcad);    pAcadDisp->Release();    if (FAILED(hr))    return;         if (pAcad)     {    AutoCAD::IAcadPreferences* pPreferences  = NULL;    hr = pAcad->get_Preferences(&pPreferences);    if(FAILED(hr))  return;    pAcad->Release();    AutoCAD::IAcadPreferencesFiles* pPreferencesFiles = NULL;    hr = pPreferences->get_Files(&pPreferencesFiles);    if(FAILED(hr)) return;         if(pPreferencesFiles)    {    /*To access Project file path*/    BSTR projectFilePath,supportPath;    /*Created a Testproject interactively and added path to "C:/Temp*/    pPreferencesFiles->GetProjectFilePath(_bstr_t("TESTPROJECT"),                                          &projectFilePath);    std::wstring ps(projectFilePath,SysStringLen(projectFilePath));    acutPrintf(_T("nProject Search Path File : %s"),ps.c_str());         /*To get list of paths in Support Search*/    pPreferencesFiles->get_SupportPath(&supportPath);    std::wstring ws(supportPath,SysStringLen(supportPath));    acutPrintf(_T("nSupport Search Path : %s"),ws.c_str());              }         }    }    catch(...)    {    return;    }    }

Above code only helps to get file path of mentioned Projects created in Applications, there is no API to get list of Projects created in the Application, following is way to read “Project Settings” key from Registry.

The mechanism to read registries is borrowed from here

/*Enumerating List of Projects available*/    #define MAX_KEY_LENGTH 255    #define MAX_VALUE_NAME 16383    void QueryKey(HKEY hKey)    {    TCHAR    achKey[MAX_KEY_LENGTH];   // buffer for subkey name    DWORD    cbName;                   // size of name string     TCHAR    achClass[MAX_PATH] = TEXT("");  // buffer for class name     DWORD    cchClassName = MAX_PATH;  // size of class string     DWORD    cSubKeys = 0;               // number of subkeys     DWORD    cbMaxSubKey;              // longest subkey size     DWORD    cchMaxClass;            &#
160; // longest class string     DWORD    cValues;              // number of values for key     DWORD    cchMaxValue;          // longest value name     DWORD    cbMaxValueData;       // longest value data     DWORD    cbSecurityDescriptor; // size of security descriptor     FILETIME ftLastWriteTime;      // last write time          DWORD i, retCode;         TCHAR  achValue[MAX_VALUE_NAME];    DWORD cchValue = MAX_VALUE_NAME;         // Get the class name and the value count.     retCode = RegQueryInfoKey(    hKey,                    // key handle     achClass,                // buffer for class name     &cchClassName,           // size of class string     NULL,                    // reserved     &cSubKeys,               // number of subkeys     &cbMaxSubKey,            // longest subkey size     &cchMaxClass,            // longest class string     &cValues,                // number of values for this key     &cchMaxValue,            // longest value name     &cbMaxValueData,         // longest value data     &cbSecurityDescriptor,   // security descriptor     &ftLastWriteTime);       // last write time          // Enumerate the subkeys, until RegEnumKeyEx fails.         if (cSubKeys)    {    printf("nNumber of subkeys: %dn", cSubKeys);         for (i = 0; i

Output running following programs:

You may also refer to change path of Project file :

http://adndevblog.typepad.com/autocad/2012/12/setting-the-project-file-search-path.html

Same mechanism is applied to change path of Support file, use

virtual HRESULT __stdcall put_SupportPath (        /*[in]*/ BSTR orient ) = 0;