GTK Instrumentation Widgets Reference Manual
giw.sourceforge.net
GTK Instrumentation Widgets {libgiw}
GiwKnob
GiwClock
— a clock widget
GiwShow
GiwCompass
GiwLed
GiwVSlider
GiwHSlider
GiwXYPlot
GiwThermo
GiwTank
GiwDial
GNU Lesser General Public License