{{DISPLAYTITLE:_MEMGET}}
The '''_MEMGET''' statement reads a portion of a memory block at an OFFSET position into a variable, array or user defined type.


{{PageSyntax}}
::: '''_MEMGET ''memory_block'', ''byte_position'', ''holding_variable'''''


* ''memory block'' is a [[_MEM]] variable type memory block name created by [[_MEMNEW]] or the [[_MEM (function)|_MEM]] function.
* mandatory ''byte_position'' is the ''memory_block.[[OFFSET]]'' memory start position plus any bytes to move into the block. 
* ''holding variable'' is the variable assigned to hold the data. The number of bytes read is determined by the variable [[type]] used.


''Usage:'' 
* The _MEMGET statement is similar to the [[GET]] statement used in files, but the position is required.
* The memory block name.[[OFFSET]] returns the starting byte position of the block. Add bytes to move into the block.
* The variable type held in the memory block can determine the next ''byte position'' to read. 
* [[LEN]](variable) can determine the byte size of numerical or user defined variable [[type]]s irregardless of the value held.
* [[STRING]] values should be of a defined length. Variable length strings can actually move around in memory and not be found.


''Example:'' Shows how to read the PSET color values from a program's [[SCREEN]] memory to an array.
{{CodeStart}} '' ''
{{Cl|SCREEN}} 13
{{Cl|PSET}} (0, 0), 123
{{Cl|PSET}} (1, 0), 222 'create screen image

'here is an array
{{Cl|DIM}} screen_array(319, 199) {{Cl|AS}} {{Cl|_UNSIGNED}} {{Cl|_BYTE}} 'use screen dimensions from 0

'here's how we can copy the screen to our array
{{Cl|DIM}} m {{Cl|AS}} {{Cl|_MEM}}
m = {{Cl|_MEMIMAGE}}  '0 or no handle necessary when accessing the current program screen
{{Cl|_MEMGET}} m, m.OFFSET, screen_array()

'here's the proof
{{Cl|PRINT}} screen_array(0, 0) 'print 123
{{Cl|PRINT}} screen_array(1, 0) 'print 222 
{{Cl|END}} '' ''
{{CodeEnd}}


''See also:''
* [[_MEMGET (function)]]
* [[_MEMPUT]]
* [[_MEM]]
* [[_MEMIMAGE]]
* [[_MEMFREE]]


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