QGIS API Documentation  3.17.0-Master (8af46bc54f)
Macros
qgsexpressionutils.h File Reference
#include "qgsfeature.h"
#include "qgsexpression.h"
#include "qgscolorramp.h"
#include "qgsvectorlayerfeatureiterator.h"
#include "qgsrasterlayer.h"
#include "qgsproject.h"
#include "qgsrelationmanager.h"
#include "qgsvectorlayer.h"
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Macros

#define ENSURE_NO_EVAL_ERROR   { if ( parent->hasEvalError() ) return QVariant(); }
 
#define FEAT_FROM_CONTEXT(c, f)
 
#define SET_EVAL_ERROR(x)   { parent->setEvalErrorString( x ); return QVariant(); }
 
#define SIP_NO_FILE
 

Macro Definition Documentation

◆ ENSURE_NO_EVAL_ERROR

#define ENSURE_NO_EVAL_ERROR   { if ( parent->hasEvalError() ) return QVariant(); }

Definition at line 31 of file qgsexpressionutils.h.

◆ FEAT_FROM_CONTEXT

#define FEAT_FROM_CONTEXT (   c,
 
)
Value:
if ( !(c) || !( c )->hasFeature() ) return QVariant(); \
QgsFeature f = ( c )->feature();
As part of the API refactoring and improvements which landed in the Processing API was substantially reworked from the x version This was done in order to allow much of the underlying Processing framework to be ported into c

Definition at line 34 of file qgsexpressionutils.h.

◆ SET_EVAL_ERROR

#define SET_EVAL_ERROR (   x)    { parent->setEvalErrorString( x ); return QVariant(); }

Definition at line 32 of file qgsexpressionutils.h.

◆ SIP_NO_FILE

#define SIP_NO_FILE

Definition at line 20 of file qgsexpressionutils.h.