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Within LTS Haskell 24.51 (ghc-9.10.3)
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type
C_ObjectClassFinalizeFieldCallback = Ptr Object -> IO ()gi-gobject GI.GObject.Callbacks Type for the callback on the (unwrapped) C side.
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gi-gobject GI.GObject.Callbacks Type for the callback on the (unwrapped) C side.
type
C_ObjectClassNotifyFieldCallback = Ptr Object -> Ptr GParamSpec -> IO ()gi-gobject GI.GObject.Callbacks Type for the callback on the (unwrapped) C side.
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gi-gobject GI.GObject.Callbacks Type for the callback on the (unwrapped) C side.
type
C_ParamSpecTypeInfoFinalizeFieldCallback = Ptr GParamSpec -> IO ()gi-gobject GI.GObject.Callbacks Type for the callback on the (unwrapped) C side.
type
C_ParamSpecTypeInfoInstanceInitFieldCallback = Ptr GParamSpec -> IO ()gi-gobject GI.GObject.Callbacks Type for the callback on the (unwrapped) C side.
type
C_ParamSpecTypeInfoValueSetDefaultFieldCallback = Ptr GParamSpec -> Ptr GValue -> IO ()gi-gobject GI.GObject.Callbacks Type for the callback on the (unwrapped) C side.
type
C_ParamSpecTypeInfoValueValidateFieldCallback = Ptr GParamSpec -> Ptr GValue -> IO CIntgi-gobject GI.GObject.Callbacks Type for the callback on the (unwrapped) C side.
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gi-gobject GI.GObject.Callbacks Type for the callback on the (unwrapped) C side.
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gi-gobject GI.GObject.Callbacks The type used for callback functions in structure definitions and function signatures. This doesn't mean that all callback functions must take no parameters and return void. The required signature of a callback function is determined by the context in which is used (e.g. the signal to which it is connected). Use G_CALLBACK() to cast the callback function to a Callback.