Vector version of [gdkpixbuf.pixbuf.Pixbuf.saveToCallback].
Saves pixbuf to a callback in format type, which is currently "jpeg", "png", "tiff", "ico" or "bmp".
If error is set, FALSE will be returned.
See gdkpixbuf.pixbuf.Pixbuf.saveToCallback for more details.
a function that is called to save each block of data that the save routine generates.
name of file format.
name of options to set
values for named options
whether an error was set
Vector version of [gdkpixbuf.pixbuf.Pixbuf.saveToCallback].
Saves pixbuf to a callback in format type, which is currently "jpeg", "png", "tiff", "ico" or "bmp".
If error is set, FALSE will be returned.
See gdkpixbuf.pixbuf.Pixbuf.saveToCallback for more details.