Column Header for a WPF TreeView

I am using the WPF TreeView to display some hierarchical information. Each item in the TreeView consists of several attributes, so I am using a Grid within my HierarchicalDataTemplate to display...

Delete GridView Row

I am trying to delete a row in the GridView by having a input type="image" and a ID of that row associated to the image so if you click on that image it will call a function in asp.net and delete...

JavaScript TypeError: Cannot read property 'style' of null

I have JavaScript code and below line has problem. if ((hr==20)) document.write("Good Night"); document.getElementById('Night).style.display='' ERROR Uncaught TypeError: Cannot read property...

Internet Explorer 11 word wrap is not working

It seems that word wrapping no longer works for textarea elements in IE 11. In IE 10 and earlier, FF, Safari, and Chrome word wrapping works as expected. IE 11 is not implementing any word...

How to set a fixed width column with CSS flexbox

CodePen: http://codepen.io/anon/pen/RPNpaP. I want the red box to be only 25 em wide when it's in the side-by-side view - I'm trying to achieve this by setting the CSS inside this media...

JavaFX TableColumns' headers not aligned with cells due to vertical scrollbar

after having spent the last few hours searching the web for this issue I decided that I need your help. The issue is similar to this topic:...

Save all columns in pdf with shiny button extension

I have read a lot of posts and still haven't found the solution. My button extension downloads only half of the columns in PDF, in the app I see all of them. How can I change it? This is how my...

Get number of columns in Gtk.Grid?

My sample code below creates a 2 row x 10 column Grid. The len() of the Grid seems to print the number of widgets within, not the row or column count. How can I get the column count? import...

Flutter - The getter 'length' was called on null

I am trying to develop a flutter app. This flutter is creating teams for a card game. After the creation of the team, the points could be counted through the, so that you don't have to think about...

Flutter Layout Row / Column - share width, expand height

I'm still having a bit of trouble with the layouting in Flutter. Right now I want to have the available space shared between 3 widgets, in a quadrant layout. The width is evenly shared (this works...

Flutter- GestureDetector not working with containers in stack

I have two containers in a stack and both containers have GestureDetector.The OnTap for the first container is working fine but it's not working with another container. The first container is the...

Overflow Error in Flutter when keyboard open

I am designing a login page it overflowed when I click on any text form field it open keyboard and through overflow warning like this see attached image. I also want a Raised button icon should be...

Dialog state not updating when notifyListeners() is called

I am using providers to manage state in my flutter app. I have a dialogue that should initially show a CircularProgressBar and then later on some content. I am calling notifyListeners() when I...

How can I sort using MUI Datatable using value, instead of what's in my custom body render?

Before implementing the custom filter options, the temperature (of type Number) was displayed as a string with the "° C" appended to it, but still held the value, as it was able to be sorted...

react-bootstrap-table2 column width change on cell click

I have base react-bootstrap-table code: import React from 'react' import BootstrapTable from 'react-bootstrap-table-next'; import cellEditFactory from 'react-bootstrap-table2-editor'; const...

Property scrollbar-width not working in css

I'm trying to set the width of the scrollbar to 'thin' and 'none', neither of them are working. I have also tried using -webkit- NOTE: I'VE SET THE OVERFLOW TO 'AUTO', IS IT THAT THE...

Flutter BottomSheet change width

I want the bottom sheet to look like the one in Angular Material. [![enter image description here][2]][2] The sheet instead expands to the maximum width. The problem is that I cannot configure...

How can I choose colors for labels of flex dashboard tabs in RSTudio?

I am using the flex dashboard tool to create a dashboard. The dashboard has a few tabs. I am wondering how I can apply colors to the titles/names/labels of the tabs. Thanks! The following is the...

Flutter: Adding Custom Transition with AutoRoute

In my App i want to add Custom Transitions. I use the Plugin Auto_Route for my Routing, inside the Doc there is written how to do it, but when i do the same i get thrown Error's. For the "Normal"...

QML FontLoader.name confusion

I downloaded from Google Fonts two .ttf files on my project folder: Montserrat-ExtraLight.ttf Montserrat-Black.ttf I set propperly the .qrc file in order to contain both of them. Suppose I have...

How to pass the variable in href in Jinja2 template?

I am working on FastAPI and facing one challenge. I need to pass the variable in href url in html. Below my code: main.py @app.get('/', response_class=HTMLResponse) def move(request: Request,...

C++ Undefined reference to `main (.text+0x24)

I have some problems with compiling my program since adding .h files to it. The error I'm getting looks like this. /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o:...

auto-py-to-exe stuck at Loading module hook 'hook-gevent.py'

I am trying to convert the code to exe with auto-py-to-exe. It stuck at "Loading module hook 'hook-gevent.py'...". import time, pyautogui, keyboard, threading from tkinter import * window =...

Bad: Error: Field '_prenom' should be initialized because its type 'String' doesn't allow null

i have a question, i am creating an application with flutterand when i want to declare a variable and initialize it after, i have an error "Error: Field '_prenom' should be initialized because its...

"Null check operator used on a null value" shown after signing out

I get the following messages after signing out from firebase on my app. *Null check operator used on a null value When the exception was thrown, this was the stack: #0 MainScreenPage.build.. ...

Flutter: How to Fix a 'Multiple Widgets Used the Same GlobalKey' Error

Problem: When I encountered this problem, I was looking to get the middle position of words contained inside a pressed widget. I am getting the error, *Multiple widgets used the same GlobalKey*,...

How to add Top and Bottom Horizontal Scrollbar in "react-data-table-component"

I have been searching for a couple of days now for a good solution to this problem I have designed and structured columns in react-data-table-component package and I want to add Scrollbar on top....

Efficient code for custom color formatting in tkinter python

So , I was trying to create a Periodic Table and its almost done from the exterior efficiently . However , I couldn't understand if there's any way I could fill in colors in individual buttons in...

Is it possible to use mix-blend-mode to blur a background while ignoring an opaque layer?

I have a small page with a blurred background image. On top of that, I have divs set up as cards that have their transparent overlay on a background image. I'm trying to set up a text effect using...