Stack Overflow
Stack Overflow

Questions tagged [threestate]

In logic, a three state logic (or ternary logic) is one from several many-valued logic systems.

In logic, a three state logic (or ternary logic) is one from several many-valued logic systems in which there are three values indicating true, false and some indeterminate third value. This is in contrast with the more commonly known two state logic (or classical boolean logic) which provide values for true and false.

6 questions
1
vote
1 answer

Trigger "Checked/Unchecked" not firing in three state checkbox

I am using the following code to implement three state checkbox using MVVM:
Ena Jain
  • 103
  • 1
  • 12
1
vote
4 answers

Three state UIButton in ios TableView List

I have students attendance list in UITableView. Where each cell having an UIButton to set student attendance like Present, Absent and Leave on button click. How can I achieve this on single button.
user5955394
1
vote
1 answer

DataGridView CheckBox Display ThreeState But Have The User Work with Two State

Current Situation I display a list of conveyors that contain custom options. When multiple conveyors are selected, I show the uncommon options as an indeterminate state like so: This demonstrates that the conveyors EB-1 and EB-3 do not have the…
Alex
  • 4,821
  • 16
  • 65
  • 106
1
vote
2 answers

I need a three-valued logic in Java

I have tried to return null as third value in my boolean function, but it won't compile. I need to return three values from my class method - true, false and null (for example). Is there any standard way how can I do it?
curiousity
  • 4,703
  • 8
  • 39
  • 59
0
votes
1 answer

Custom ThreeState CheckBox not working with Click trigger event

I made my own MyCheckBox control by overriding the default CheckBox control. Reason being I wanted to change order of it's states when it's ThreeState property is set to true. The Default order is UnChecked -> Checked -> Indeterminate -> Unchecked…
Heisen
  • 33
  • 5
0
votes
1 answer

WPF/VB How to set a threestate checkbox (or nullable boolean) to Nothing(null)

The title explain all itself. For VB the keyword Nothing is the same as False. This code verify if checkbox is a three state checkbox, and set the default value, indeterminate if is a "three state", and false if is not. myThreeStateChkbox.IsChecked…
Baro
  • 5,300
  • 2
  • 17
  • 39