Holger Eitzenberger <holger@xxxxxxxxxxxxxxxx> writes: >> Dose anyone have a reasonable explanation about that? > > make sure to use 'unsigned long' instead of 'unsigned int', as only the > first one will be 64bit in a 64bit environment, the latter still will > be 32bit. You can't really assume this -- apparently on ms-windows "long" is still 32 bit, even in a "64-bit" environment (stupid, I agree, but I guess MS has too much badly written code that they don't want to break...). -Miles -- If you can't beat them, arrange to have them beaten. [George Carlin]