proc customStep(self: ScrollBar): float64 {.
gcsafe, locks: 0, raises: [], tags: []
.}

proc customStep=(self: ScrollBar; val: float64) {.
gcsafe, locks: 0, raises: [], tags: []
.}

method guiInput(self: ScrollBar; event: InputEvent) {.
gcsafe, locks: 0, raises: [],
    tags: []
.}

method dragSlaveInput(self: ScrollBar; arg0: InputEvent) {.
gcsafe, locks: 0, base,
    raises: [], tags: []
.}

method dragSlaveExit(self: ScrollBar) {.
gcsafe, locks: 0, base, raises: [], tags: []
.}