This function initiates a font selection operation by presenting a dialog to the user for selecting a font face (i.e. a font family and style, but not a specific font size).
The callback will be called when the dialog is dismissed. It should call gtk.font_dialog.FontDialog.chooseFaceFinish to obtain the result.
the parent gtk.window.Window
the initial value
a gio.cancellable.Cancellable to cancel the operation
a callback to call when the operation is complete
This function initiates a font selection operation by presenting a dialog to the user for selecting a font face (i.e. a font family and style, but not a specific font size).
The callback will be called when the dialog is dismissed. It should call gtk.font_dialog.FontDialog.chooseFaceFinish to obtain the result.