Functions and Directives Functions and Directives

Function _conSetMemvar() Foundation

Assign the value of a container to an Xbase++ memvar.

Syntax
XPPAPIRET _conSetMemvar(CHAR *name,
                        ContainerHandle chValue);
Parameters
CHAR* name
The character pointer name contains the name of the Xbase++ memvar.
ContainerHandle chDest
Handle of a container that contains the value that will be assigned to the Xbase++ memvar.
Return

This function returns NULL if no error occured, otherwise it returns an error code which can be checked by _conLastError().

Description

The function _conSetMemvar() is used to assign the value of a container to an Xbase++ memvar. If this memvar does not already exist, it will be created by the function.

Examples
#include <windows.h> 

#include "xppdef.h" 
#include "xpppar.h" 
#include "xppcon.h" 

XPPRET XPPENTRY MyCAPIFunction(XppParamList paramList) 
{  /* Declare and initialize variables */ 
ContainerHandle chValueA = _conGetMemvar( "VALUEA", NULLCONTAINER ); 
ContainerHandle chValueB = _conGetMemvar( "VALUEB", NULLCONTAINER ); 

/* Now swap values. */ 
_conSetMemvar( "VALUEA", chValueB ); 
_conSetMemvar( "VALUEB", chValueA ); 

/* Release containers. */ 
_conRelease( chValueA ); 
_conRelease( chValueB ); 
} 


/* Xbase++ code */ 
PROCEDURE Main 
PUBLIC ValueA := 1 
PUBLIC ValueB := 2 

CLS 
? ValueA, ValueB 

MyCAPIFunction() 

? ValueA, ValueB 
RETURN
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