GPAL Fluent: High-level fluent C# API

//WithButtonWidth is said once on the form and every button takes it, so a form full of buttons does not need the width repeated on each one. A button that says its own WithWidth keeps that instead, and a form that says neither leaves its buttons stretching the full width. Both are settings read as each control is built, not live properties: say them before the form is shown. WithButtonWidth is the exception, and it can be said again while the form is up to resize every button that did not ask for its own, with 0 putting them back to stretching. Controls are laid out in the order they are added. The captions are built inline with LabelFor because nothing reads them back; the inputs and buttons are declared fields because the handlers do.

// each control is its own field, so a handler can reach it by name

static GPALInput customer = (GPALInput)GPAL.Input

.WithPlaceholder("customer name")

.WithName("customer");

static GPALInput email = (GPALInput)GPAL.Input

.WithPlaceholder("you@example.com")

.WithName("email");

static GPALButton submit = (GPALButton)GPAL.Button

.Default

.WithText("Submit")

.WithCallback<EventHandler>(SubmitClicked)

.WithName("submit");

// this one says its own width, which wins over the form's

static GPALButton cancel = (GPALButton)GPAL.Button

.WithText("Cancel")

.WithWidth(90)

.WithCallback<EventHandler>((s, e) => myForm.Hide())

.WithName("cancel");

myForm = GPAL.Form

.WithTitle("Customer Entry")

.WithWidth(350)

.WithButtonWidth(175) // both buttons, half the form, centered

.WithHeight(400)

.WithLeft(100)

.WithTop(100)

.WithFormControl(GPAL.LabelFor("Customer:"))

.WithFormControl(customer)

.WithFormControl(GPAL.LabelFor("Email:"))

.WithFormControl(email)

.WithFormControl(submit)

.WithFormControl(cancel)

.ToGPALObject();

myForm.ShowDialog();