HOWTO: Mark a Device Configured Through VendorInstaller DLL

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Sample Code

   extern "C" VOID PASCAL  ScheduleInstallation(HWND hwndParent,
                               HINSTANCE hDllInst,
                               LPSTR lpstrCmdLine, int nCmdShow)
   {
       HKEY                  hkPlugNPlay;
       DWORD                 dw0 = 0;

       /*
       We now truncate lpstrCmdLine so it holds just the registry key we
       need.
       */ 

       for   (LPSTR lpstrSource = lpstrCmdLine;
              *lpstrSource && *lpstrSource != ' ';
              lpstrSource++)
       ;
       if    (*lpstrSource)  *lpstrSource++ ='\0';

       if    (ERROR_SUCCESS != RegOpenKey(HKEY_LOCAL_MACHINE, lpstrCmdLine,
                 &hkPlugNPlay))
       {
         return;
       }

       if    (*lpstrSource) *(--lpstrSource) = ' ';  //  restore the blank

       //    We must mark as installed now, so we don't do all
       //    this once more in the event of a reboot.

       RegSetValueEx(hkPlugNPlay, "ConfigFlags", 0, REG_BINARY, (LPBYTE)
           &dw0, sizeof DWORD);
       RegCloseKey(hkPlugNPlay);

       BeginInstallation(hwndParent, hDllInst, lpstrCmdLine, nCmdShow);
       return;
   }