gtkScaleAddMark {RGtk2} | R Documentation

## gtkScaleAddMark

### Description

Adds a mark at `value`.

### Usage

    gtkScaleAddMark(object, value, position, markup = NULL)

### Arguments

``object`` | a `GtkScale`
``value`` | the value at which the mark is placed, must be between the lower and upper limits of the scales' adjustment
``position`` | where to draw the mark. For a horizontal scale, `GTK_POS_TOP` is drawn above the scale, anything else below. For a vertical scale, `GTK_POS_LEFT` is drawn to the left of the scale, anything else to the right.
``markup`` | Text to be shown at the mark, using Pango markup, or `NULL`. [ allow-none ]

### Details

A mark is indicated visually by drawing a tick mark next to the scale, and GTK+ makes it easy for the user to position the scale exactly at the marks value.

If `markup` is not `NULL`, text is shown next to the tick mark.

To remove marks from a scale, use `gtkScaleClearMarks`. Since 2.16

### Author(s)

Derived by RGtkGen from GTK+ documentation

[Package RGtk2 version 2.20.36.3 Index]