slot is a method callback used to handle a signal in some gui frameworks like QT
slot is a method callback used to handle a signal in some gui frameworks like QT - see for instance: http://doc.qt.io/qt-4.8/signalsandslots.html
Questions tagged [slot]
445 questions
4
votes
1 answer
Vitest: Wrapper doesn't show "teleported" HTML
imagine we have two components, Modal.vue which is lets say a component that is used to display modal content (uses slots to take in JSX), and Component.vue which is the one with content we wish to test with vitest/jest:
//Modal.vue
…
ReMo
- 83
- 5
4
votes
1 answer
Is it possible in vue3 to access the root DOM element in a child component slot? I am trying to use a 3rd party library (sortablejs) in vue3
In vue2 I could use this.$el
export default {
render() {
return this.$slots.default[0]
},
mounted() {
Sortable.create(this.$el, {});
})
}
If, in vue3 I try to use this.$slots.default()[0] I can't see how to target the element.
If I use a template…
Simon M
- 41
- 3
4
votes
1 answer
Vue.js: How do I get a list of component instance for slot
I want to access vue instances of a list of slot components. Specifically I need to access the key or id of slot components so that I can preserve the state of components in beforeUpdate and updated hooks.
I have my component template as…
Mengo
- 1,177
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4
votes
3 answers
signals and slots in multilayered UI widgets
Let's say we have the follogin UI:
+--------------------------+
|W1 +--------------+ |
| |W2 | |
| | +----------+ | |
| | |W3 | | |
| | +----------+ | |
| | | |
| …
Daniel
- 561
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4
votes
2 answers
QComboBox connect
I need to call a function with currentIndex+1 when the currentIndex of a QComboBox changes. I'm struggling with the syntax this morning:
// call function readTables(int) when currentIndex changes.
connect(ui->deviceBox,…
Jocala
- 243
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4
votes
3 answers
subclassing S4 class that contains a list with names: access by name
The puzzle is accessing elements of a list in the object's "pseudo-slot".
That's successful using 2 out of 4 approaches one might try:
setClass("TempA", contains="list")
A = new("TempA", list(a=1,b=2))
A
Just printing A does not show the list…
Roger
- 422
- 4
- 12
4
votes
1 answer
QT SLOT: Pointer to Member Function error
I'm currently working on a Qt project and I have some troubles with SLOTs.
I want to pass a pointer to member function as an argument of a SLOT. To do this, I declared the SLOT in my class but when I do so, I get MOC error.
I don't know if what I…
user3429997
- 53
- 4
4
votes
1 answer
Running a lambda function slot on instance of a QWidgets Thread
Currently I am creating a thread.
If that thread wants to communicate with the main thread in order to interact with the GUI, It emits signals that are connected to slots on the main widget thread.This works all fine.
However for this solution I…
Rajeshwar
- 11,179
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4
votes
1 answer
Best practice for QT updating values signals/slots
What do you consider best practice for designing signal/slot interaction for updating member values in a class?
For instance, consider a member variable that is represented on a UI.
The user alters the value in the UI.
A signal/slot relationship…
mike
- 1,192
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4
votes
2 answers
Passing QList* to a signal from QThread
In my qt application i have a class (worker) which is called from the object which runs in a thread. In my worker class i create QList, like this
QList albums;
while (i.hasNext())
{
QRegularExpressionMatch album = i.next();
…
SirLanceloaaat
- 213
- 9
- 18
4
votes
1 answer
qml c++ signal slot not working
In C++ code below I load a qml file. But c++ slot not working. No error or warnings occurs but debug message is always "a" character. No "b" character appears. Can you tell me why? Thanks.
c++ side code
::::::::::::::
view=new…
serkan gezer
- 429
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- 8
3
votes
1 answer
Move child of shadow dom with slots out of the web component
I'm trying to move a child of a shadow dom of a web component outside it, and has been able to do it if that child has not slots inside.
Let me ilustrate with an example. I have the following 2 web components:
customElements.define('a-child', class…
Felipe Sierra
- 143
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- 12
3
votes
1 answer
How can I distinguish arguments and local variables in slot of Julia codeinfo?
I am studying Julia static analysis, and I have the following function:
function f(x,y,z)
d=x+y
d=d*2*z
end
i use code_typed to analyze it.
julia> y=code_typed(f)
1-element Vector{Any}:
CodeInfo(
1 ─ %1 = (x + y)::Any
│ %2 = (%1 *…
moreHope
- 85
- 5
3
votes
2 answers
Qt - Clear old signals
Say I have form A that can process signal x emitted by form B.
When signal x was emitted, form A does something. Then I close form A, reopen form A and wait for signal x. However, the slot for processing signal x is called twice.
I repeat closing…
fucai1116
- 191
- 3
- 5
3
votes
1 answer
Slot headers vuetify 2.0
Good morning, I am modifying the slot header of a data table in vuetify.js to add a tooltip, all this does it well, but the arrows of asc and desc are not shown, I would like to know what I am doing wrong.
Almic
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