GUI enabling/disabling of controls: Difference between revisions
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End Select
End Sub</syntaxhighlight>
=={{header|V (Vlang)}}==
Graphical
Note: For alternative UI toolkits, check github.com/vlang/awesome-v (Awesome V)
<syntaxhighlight lang="Zig">
import ui
import gx
const (
win_width = 400
win_height = 40
)
[heap]
struct App {
mut:
window &ui.Window = unsafe {nil}
counter string = "0"
}
fn main() {
mut app := &App{}
app.window = ui.window(
width: win_width
height: win_height
title: "Counter"
mode: .resizable
layout: ui.row(
spacing: 5
margin_: 10
widths: ui.stretch
heights: ui.stretch
children: [
ui.textbox(
max_len: 20
read_only: false
is_numeric: true
text: &app.counter
),
ui.button(
text: "increment"
bg_color: gx.light_gray
radius: 5
border_color: gx.gray
on_click: app.btn_click_inc
),
ui.button(
text: "decrement"
bg_color: gx.light_gray
radius: 5
border_color: gx.gray
on_click: app.btn_click_dec
),
]
)
)
ui.run(app.window)
}
fn (mut app App) btn_click_inc(mut btn ui.Button) {
if app.counter.int() > 10 {
btn.disabled = true
return
}
app.counter = (app.counter.int() + 1).str()
}
fn (mut app App) btn_click_dec(mut btn ui.Button) {
if app.counter.int() < 0 {
btn.disabled = true
return
}
app.counter = (app.counter.int() - 1).str()
}
</syntaxhighlight>
=={{header|Wren}}==
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