Déterminer la version d'une DLL (pour SHELL32 ou COMCTL32)

DllGetVersion: Cette fonction n'est pas forcément implentée dans les DLL.

Microsoft propose une solution:

#define PACKVERSION(major,minor) MAKELONG(minor,major)
   DWORD GetDllVersion(LPCTSTR lpszDllName)
   {
	   HINSTANCE hinstDll;
		DWORD dwVersion = 0;

 /* For security purposes, LoadLibrary should be provided with a 
   fully-qualified path to the DLL. The lpszDllName variable should be
   tested to ensure that it is a fully qualified path before it is used. */
   hinstDll = LoadLibrary(lpszDllName);
   
		if(hinstDll)
		{
			DLLGETVERSIONPROC pDllGetVersion;
			pDllGetVersion = (DLLGETVERSIONPROC)GetProcAddress(hinstDll, 
				"DllGetVersion");

 /* Because some DLLs might not implement this function, you
   must test for it explicitly. Depending on the particular 
   DLL, the lack of a DllGetVersion function can be a useful
   indicator of the version. */

			if(pDllGetVersion)
			{
				DLLVERSIONINFO dvi;
				HRESULT hr;

				ZeroMemory(&dvi, sizeof(dvi));
				dvi.cbSize = sizeof(dvi);

				hr = (*pDllGetVersion)(&dvi);

				if(SUCCEEDED(hr))
				{
					dwVersion = PACKVERSION(dvi.dwMajorVersion, dvi.dwMinorVersion);
				}
			}

			FreeLibrary(hinstDll);
		}
	return dwVersion;
   }

On pourra alors appeler la fonction comme ceci:
if(GetDllVersion(TEXT("comctl32.dll")) >= PACKVERSION(4,71))
{
    //Proceed.
}
else
{
    // Use an alternate approach for older DLL versions.
}