class: GtkClosureExpression

[13:7] extends: object

An expression using a custom GClosure to compute the value from its parameters.

GtkClosureExpression (value_type = null, closure = null, n_params = null, params = null)

Creates a GtkExpression that calls closure when it is evaluated. closure is called with the this object and the results of evaluating the params expressions.
- @p value_type is the type of the value that this expression evaluates to.
- @p closure is closure to call when evaluating this expression. If closure is floating, it is adopted.
- @p n_params is the number of params needed for evaluating closure.
- @p params is expressions for each parameter.
toNativeHandle (Source)

Normalizes a constructor argument into a raw pointer carrier. Accepts a raw NativeHandle, a raw NativeBuffer returned from fn.call(...), another generated wrapper exposing handle(), or null. Returns null when the argument carries no pointer.
- @p Source is the raw handle, raw buffer, wrapper, or null.
- @r A raw pointer carrier or null when no pointer is present.
getLib ()

Returns the opened native library for this generated wrapper.
- @r The opened native library.
handle ()

Returns the wrapped NativeHandle.
- @r The wrapped NativeHandle.
isNull ()

Returns true when the wrapped handle is null.
- @r A bool.
describe ()

Returns a small string for debugging generated wrappers.
- @r A string.
asExpression ()

Wraps this handle as GtkExpression.
- @r A GtkExpression object.