QB64-PE/internal/help/_MEMGET_(function).txt

The '''_MEMGET''' function returns a value from a specific memory block name at the specified OFFSET using a certain variable type.


{{PageSyntax}}
::: value = '''_MEMGET(''memory_block'', ''memory_block.OFFSET''''' [+ ''bytes'']''', ''variable_type'')'''


* Returns a value of the ''variable type'' designated. The holding variable must match that [[TYPE]]!
* ''memblock'' is the [[_MEM]] variable type name assigned to the block of memory.
* ''memory block.OFFSET'' is the dot [[OFFSET]] byte zero memory position where block data begins. 
* ''variable type'' is a variable [[TYPE]] like [[_BYTE]], [[INTEGER]], [[SINGLE]], [[DOUBLE]], etc.
* All values created by memory functions MUST be freed using [[_MEMFREE]] with a valid [[_MEM]] variable.


''Example:'' [[DEF SEG]] and [[VARPTR]] are no longer necessary to do things in memory just like [[POKE]] and [[PEEK]] do.
{{CodeStart}} '' ''
{{Cl|DIM}} o {{Cl|AS}} {{Cl|_MEM}}
o = {{Cl|_MEM (function)|_MEM}}(d&) 'OLD... o% = VARPTR(d&)
{{Cl|_MEMPUT}} o, o.OFFSET + 1, 3 {{Cl|AS}} {{Cl|_UNSIGNED}} {{Cl|_BYTE}} 'a POKE
v = {{Cl|_MEMGET (function)|_MEMGET}}(o, o.OFFSET + 1, {{Cl|_UNSIGNED}} {{Cl|_BYTE}}) 'a PEEK
{{Cl|PRINT}} v     'prints 3
{{Cl|PRINT}} d&    'prints 768 because the 2nd byte of d& has been set to 3 or 3 * 256
{{CodeEnd}}
:''Explanation:'' The memory block and OFFSET are given by [[_MEMPUT]] and the _MEMGET function, with the designated type.


''See also:''
* [[_MEM]]
* [[_MEMGET]], [[_MEMPUT]]
* [[_MEMNEW]], [[_MEMFILL]]
* [[_MEMCOPY]]


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