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29 lines
1.2 KiB
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29 lines
1.2 KiB
Plaintext
{{QBDLDATE:05-20-2022}}
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{{QBDLTIME:23:17:19}}
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The '''VARSEG''' function returns an [[INTEGER]] value that is the segment part of a variable or array memory address.
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{{PageSyntax}}
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:: [[DEF SEG]] = VARSEG(variable_name[(start_index)])
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* If variablename is not defined before [[VARPTR]] or VARSEG is called, the variable is created and its address is returned.
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* The start index is the lowest index of an array variable when used.
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* When a string variable, VARSEG returns the segment location address of the first byte of the string.
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* Because many QBasic statements change the locations of variables in memory, use the values returned by VARPTR and VARSEG immediately after the functions are used!
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* Integer array sizes are limited to 32767 elements when using [[VARSEG]] in QB and '''QB64'''!. Create a larger array using [[_BYTE]]. Example: [[DIM]] [[SHARED]] Memory (65535) AS [[_UNSIGNED]] [[_BYTE]]
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* '''Warning: DEF SEG, VARSEG , VARPTR, PEEK or POKE access QB64's emulated 16 bit conventional memory block!'''
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: '''It is highly recommended that QB64's [[_MEM]] memory system be used to avoid running out of memory.'''
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''See also:''
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* [[BSAVE]], [[BLOAD]]
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* [[SADD]], [[DEF SEG]]
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* [[VARPTR]], [[VARPTR$]]
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* [[POKE]], [[PEEK]]
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{{PageNavigation}}
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