private static double GetFreeMemory()
{
IntPtr module = FunctionLoader.LoadLibrary("Win32Dll1.dll");
if (module == IntPtr.Zero) // error handling
{
return(0);
}
// get a "pointer" to the method
IntPtr method = FunctionLoader.GetProcAddress(module, "GetFreeMemory");
if (method == IntPtr.Zero) // error handling
{
FunctionLoader.FreeLibrary(module); // unload library
return(0);
}
// convert "pointer" to delegate
DoubleVoidFunc f = (DoubleVoidFunc)Marshal.GetDelegateForFunctionPointer(method, typeof(DoubleVoidFunc));
// use function
return(f());
}