Poke

FreeBASIC

Poke
 
Assigns a value to a location in memory.

Syntax

Declare Sub Poke ( ByVal address As Any Ptr, ByRef value As UByte )
Declare Sub Poke ( datatype, ByVal address As Any Ptr, ByRef value As datatype )

Usage

Poke [ datatype, ] address, value

Parameters

datatype
The type of data at the specified address.
address
The location in memory to assign to.
value
The value to assign.

Description

Poke assigns a value to a location in memory. It is equivalent to

*cast(ubyte ptr, address) = value
or
*cast(datatype ptr, address) = value

When datatype is a user-defined type, Poke assigns value using the type's Operator Let.

Example

Dim i As Integer, p As Integer Ptr
p = @i

Poke Integer, p, 420
Print Peek(Integer, p)

Will produce the output:

420

Differences from QB

  • Only the byte form were supported in QB.
  • DEF SEG isn't needed anymore because the address space is 32-bit flat in FreeBASIC.

See also