Unit 'AmigaDOS'	Package
[Overview][Constants][Types][Procedures and functions][Variables][Index]	[#morphunits]

GetVar

Returns the value of a local or global variable

Declaration

Source position: amigados.pas line 2230

function GetVar(

name: PChar;

buffer: PChar;

size: LongInt;

flags: LongInt

):LongInt;

Arguments

`name`		Pointer to a variable name.
`buffer`		A user allocated area which will be used to store the value associated with the variable.
`size`		Length of the buffer region in bytes.
`flags`		combination of type of var to get value of (low 8 bits), and flags to control the behavior of this routine.

Function result

Size of environment variable. -1 indicates that the variable was not defined.

Description

Gets the value of a local or environment variable. It is advised to only use ASCII strings inside variables, but not required. This stops putting characters into the destination when a n is hit, unless GVF_BINARY_VAR is specified. (The n is not stored in the buffer.)

Currently defined flags include:

GVF_GLOBAL_ONLY: tries to get a global env variable.
GVF_LOCAL_ONLY: tries to get a local variable.
GVF_BINARY_VAR: don't stop at n
GVF_DONT_NULL_TERM: no null termination (only valid for binary variables).

The default is to try to get a local variable first, then to try to get a global environment variable.

SetVar		Sets a local or environment variable
DeleteVar		Deletes a local or environment variable
FindVar		Finds a local variable

GetVar

Declaration

Arguments

Function result

Description

See also