FontDialog.chooseFont

void chooseFont(gtk.window.Window parent =  null,  pango.font_description.FontDescription initialValue =  null,  gio.cancellable.Cancellable cancellable =  null,  gio.types.AsyncReadyCallback callback =  null)

This function initiates a font selection operation by presenting a dialog to the user for selecting a font.

The callback will be called when the dialog is dismissed. It should call gtk.font_dialog.FontDialog.chooseFontFinish to obtain the result.

If you want to let the user select font features as well, use gtk.font_dialog.FontDialog.chooseFontAndFeatures instead.

Parameters

`parent`	the parent gtk.window.Window
`initialValue`	the font to select initially
`cancellable`	a gio.cancellable.Cancellable to cancel the operation
`callback`	a callback to call when the operation is complete