Invokes the Gimp gradients selection dialog.
Opens a dialog letting a user choose a gradient.
| gradient_callback |
The callback PDB proc to call when user chooses a gradient. |
| popup_title |
Title of the gradient selection dialog. |
| initial_gradient |
The initial gradient choice. |
| parent_window |
An optional parent window handle for the popup to be set transient to. |
|
TRUE on success. |