choose_rgba
Description:
public async RGBA? choose_rgba (Window? parent, RGBA? initial_color, Cancellable? cancellable) throws Error
Presents a color chooser dialog to the user.
Parameters:
| this |
a color dialog |
| parent |
the parent window |
| initial_color |
the color to select initially |
| cancellable |
a cancellable to cancel the operation |
| callback |
a callback to call when the operation is complete |
| user_data |
data to pass to |