I've had a quick scan through the prostogram source to help you out and it just seems to do it like this when a button is clicked: Code: var imagePicker = pageStack.push("Sailfish.Pickers.ImagePickerPage") imagePicker.selectedContentChanged.connect(function () { pageStack.push(Qt.resolvedUrl("SendPhotoPage.qml"),{image_url: imagePicker.selectedContent}) }) A quick google showed no official documentation about it, but a few questions whether or not Pickers imports are to be allowed in harbour. prostogram does not seem to import pickers as such, only silica.
var imagePicker = pageStack.push("Sailfish.Pickers.ImagePickerPage") imagePicker.selectedContentChanged.connect(function () { pageStack.push(Qt.resolvedUrl("SendPhotoPage.qml"),{image_url: imagePicker.selectedContent}) })