ColorChooserGidBuilderImpl.useAlpha
T useAlpha(bool propval)Set useAlpha property.
Parameters
propval | When ::use-alpha is true, colors may have alpha (translucency) information. When it is false, the #GdkRGBA struct obtained via the #GtkColorChooser:rgba property will be forced to have |
alpha | = 1. Implementations are expected to show alpha by rendering the color over a non-uniform background (like a checkerboard pattern). |
Returns
Builder instance for fluent chaining