python - How do I fill a combobox in QGIS with only points vector layers?

I'm new to writing plugins in python for QGIS. I've been searching on internet for a while and wrote the code below. Even though it fills my combobox, all layers (rasters, vectors of all geometry types) get added. What am I doing wrong here?

#Populate the combo box with vector layers
    layers = QgsMapLayerRegistry.instance().mapLayers().values()
    for layer in layers:
        if layer.type() == QgsMapLayer.VectorLayer and layer.geometryType() == QGis.Point:
            self.dlg.mMapLayerComboBox.addItem(layer.name(), layer)

Answer

This should help:

  if layer.type() == QgsMapLayer.VectorLayer and (layer.wkbType()==QGis.WKBPoint or layer.wkbType() == QGis.WKBMultiPoint):

But it is not the best approach. Just use QgsMapLayerComboBox https://qgis.org/api/classQgsMapLayerComboBox.html

use:

comboBox.setFilters(QgsMapLayerProxyModel.PointLayer)

On your combobox object.