vscphlp_getRemoteVariableGUIDString

int vscphlp_getRemoteVariableGUIDString( long handle,    
                                    const char *pName, 
                                    const char *pGUID, 
                                    size_t len )

Parameters

handle

Handle for the communication channel obtained from a call to vscphlp_newsession.

pName

Pointer to a string containing the name of the variable. This name should have a character a-z as its first character and is not case sensitive.

pGUID

Pointer to event variable that get the value of the GUID variable.

len

Size of buffer for GUID.

Return Value

Return VSCP_ERROR_SUCCESS on success, VSCP_ERROR_ERROR on failure. If the connection is closed VSCP_ERROR_CONNECTION is returned. VSCP_ERROR_PARAMETER is returned if called while in a receive loop.

Description

Get variable value from GUID variable.

Example

// Read a value from a GUID variable - string type
if ( VSCP_ERROR_SUCCESS == 
         ( rv = vscphlp_getRemoteVariableGUIDString( handle1, "test_guidstr_variable", strGUID, sizeof(strGUID)-1 )  ) )  {
    printf( "Command success: vscphlp_getRemoteVariableGUIDString on channel 1\n" );
    printf(" Value = %s\n", strGUID );
}
else {
    printf("\aCommand error: vscphlp_getRemoteVariableGUIDString on channel 1  Error code=%d\n", rv);
}

See Also

vscphlp_setRemoteVariableGUIDString


Very Simple Control Protocol
Wed Jul 04 2018 19:49:59 GMT+0000 (UTC)
This document is licensed under Creative Commons BY 4.0 and can be freely copied, redistributed, remixed, transformed, built upon as long as you give credits to the author((s).

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