Inch net, uLong lpnumberofbyteswritten = 0l ulong is long in VB, right? What does the later 0l mean? I know.
ULong is the abbreviation of Unsigned Long, which stands for unsigned long, accounting for 64 bits.
The following 0L represents the value 0, and l represents a long integer, telling the compiler that this is a long integer value 0. If there is no L, it defaults to integer, 32 bits.