1.23.2 Instance variables

dialog_item <- accelerator: [name]*

Activate when button->key: name is received. See window->typed for an explanation on handling accelerators in dialog windows.

button <- danger: bool

If @on (default @off), the button starts a destructive action. It is painted using button.danger_colour. A danger button can also be the button<-default_button, which makes it filled with this colour. Typically though, a dialog that asks to confirm a destructive action makes cancel the default button, so RETURN does not destroy anything.

button <- default_button: [bool]

Button is default button for its graphical<-device. This implies two things. First of all, if an item in the dialog is modified, the item will invoke dialog->modified_item. If the dialog finds a device<-default_button, it will make the default button graphical->active. If the RETURN key is hit in the dialog window, the default button will be button->execute’d.

button <- popup_image: image*

Indication that button has a popup menu. If present this image is painted right-of the label of the button.

button <- show_focus_border: bool

By default, the gtk and motif styles show a wide sunken border around the default button or the button holding the keyboard focus. By setting this variable to @off, this border is never painted. This is intended to deal with tightly placed buttons, buttons at the very edge of a window, etc.

The method button->label switches this flag automatically to @off if the label is set to an image.