qgis的Python插件错误

Question

I'm following a tutorial for developing a plugin for qgis , but I'm stuck in a error, when trying to insert a text in a textbox window. The code is as demonstrated here

Class vector_selectbypointdialog.py:

    from PyQt4 import QtCore, QtGui
    from ui_vector_selectbypoint import Ui_vector_selectbypoint
    # create the dialog for zoom to point
    class vector_selectbypointDialog(QtGui.QDialog):

    def __init__(self):
        QtGui.QDialog.__init__(self)
        # Set up the user interface from Designer.
        self.ui = Ui_vector_selectbypoint()
        self.ui.setupUi(self)

    def setTextBrowser(self, output):
        self.ui.txtFeedback.setText(output)

    def clearTextBrowser(self):
        self.ui.txtFeedback.clear()

Class vector_selectbypoint.py:

under init create the object like this:

# create our GUI dialog
self.dlg = vector_selectbypointDialog()

And the method that handles to insert the text:

handleMouseDown(self, point, button):
        self.dlg.clearTextBrowser()
        self.dlg.setTextBrowser( str(point.x()) + " , " +str(point.y()) )

The error is:

handleMouseDown self.dlg.clearTextBrowser() AttributeError: 'vector_selectbypointdialog' object has no attribute 'clearTextBrowser'

Answer 1

您确定要重命名PyQt文本浏览器窗口小部件txtFeedback吗？

Answer 2

I got the same problem and solved it : you probably have a mixing of tab and space characters in class vector_selectbypointDialog (clearTextBrowser becomes a subfunction in init()).

Indent correctly your code in vector_selectbypointdialog.py and it will work ;-)

Answer 3

Yes, something is wrong in this example.

Instead of:

    self.dlg.clearTextBrowser()
    self.dlg.setTextBrowser( str(point.x()) + " , " +str(point.y()) )

just use:

    self.dlg.ui.txtFeedback.clear()
    self.dlg.ui.txtFeedback.setText( str(point.x()) + " , " +str(point.y()) )