Pause Jupyter Notebook widgets, waiting for user input
来源： https://stackoverflow.com/questions/55244865/pause-jupyter-notebook-widgets-waiting-for-user-input
widget
how to clear text editing controller from another class
来源： https://stackoverflow.com/questions/63655785/how-to-clear-text-editing-controller-from-another-class
how to clear text editing controller from another class
来源： https://stackoverflow.com/questions/63655785/how-to-clear-text-editing-controller-from-another-class
How to make a function identify another? Python
来源： https://stackoverflow.com/questions/63330189/how-to-make-a-function-identify-another-python
How to make a function identify another? Python
来源： https://stackoverflow.com/questions/63330189/how-to-make-a-function-identify-another-python
Editor in a PDF
问题 I am trying to edit a pdf file. I am able to load the pdf file and view the same and now I am trying to edit the file using MS-paint kind of feature in it. The edit will be of manual import 'package:flutter/material.dart'; import 'package:flutter_plugin_pdf_viewer/flutter_plugin_pdf_viewer.dart'; class Viewer extends StatefulWidget { @override _ViewerState createState() => _ViewerState(); } class _ViewerState extends State<Viewer> { String pdf = "files/view.pdf"; PDFDocument _doc; bool
Create a button with an image in Flutter?
问题 How do you create a button with an image using Flutter? It seems like the simplest thing to do, but the image does not fill the parent widget completely. This is what I have: Container(child: ConstrainedBox( constraints: BoxConstraints.expand(), child: FlatButton(onPressed: null, child: Image.asset('path/the_image.png')))) I followed this post as guidance. My image looks like this: Notice the padding around the PNG image - it's not in the code. Where does it come from? The PNG itself does not
Create a button with an image in Flutter?
问题 How do you create a button with an image using Flutter? It seems like the simplest thing to do, but the image does not fill the parent widget completely. This is what I have: Container(child: ConstrainedBox( constraints: BoxConstraints.expand(), child: FlatButton(onPressed: null, child: Image.asset('path/the_image.png')))) I followed this post as guidance. My image looks like this: Notice the padding around the PNG image - it's not in the code. Where does it come from? The PNG itself does not
Python tkinter listbox get (ACTIVE) method
问题 I was trying to make the currently selected List box item to be printed out. For example, when i select item "one", it should print out "one" and when i select item "two", it should print out "two" etc. The following is what i have tried. from Tkinter import* root=Tk() sizex = 600 sizey = 400 posx = 40 posy = 20 root.wm_geometry("%dx%d+%d+%d" % (sizex, sizey, posx, posy)) itemsforlistbox=['one','two','three','four','five','six','seven'] def CurSelet(evt): value=str((mylistbox.get(ACTIVE)))
Python tkinter listbox get (ACTIVE) method
问题 I was trying to make the currently selected List box item to be printed out. For example, when i select item "one", it should print out "one" and when i select item "two", it should print out "two" etc. The following is what i have tried. from Tkinter import* root=Tk() sizex = 600 sizey = 400 posx = 40 posy = 20 root.wm_geometry("%dx%d+%d+%d" % (sizex, sizey, posx, posy)) itemsforlistbox=['one','two','three','four','five','six','seven'] def CurSelet(evt): value=str((mylistbox.get(ACTIVE)))