17 #ifndef QGSATTRIBUTETYPELOADDIALOG_H    18 #define QGSATTRIBUTETYPELOADDIALOG_H    20 #include "ui_qgsattributeloadfrommap.h"    46     void accept() 
override;
    59     QMap<QString, QVariant> &valueMap();
    74     void fillComboBoxes( 
int layerIndex );
    81     void createPreview( 
int fieldIndex, 
bool full = 
false );
    87     void previewButtonPushed();
    99     void loadDataToValueMap();
   102     QMap<QString, QVariant> mValueMap;
 Map canvas is a class for displaying all GIS data types on a canvas. 
 
Encapsulate a field in an attribute table or data source. 
 
Represents a vector layer which manages a vector based data sets.