gtkPaintExpander {RGtk2} | R Documentation

## gtkPaintExpander

### Description

Draws an expander as used in `GtkTreeView`. `x` and `y` specify the center the expander. The size of the expander is determined by the "expander-size" style property of `widget`. (If widget is not specified or doesn't have an "expander-size" property, an unspecified default size will be used, since the caller doesn't have sufficient information to position the expander, this is likely not useful.) The expander is expander_size pixels tall in the collapsed position and expander_size pixels wide in the expanded position.

### Usage

    gtkPaintExpander(object, window, state.type, area = NULL, widget = NULL,
        detail = NULL, x, y, expander.style)

### Arguments

``object`` | a `GtkStyle`
``window`` | a `GdkWindow`
``state.type`` | a state
``area`` | clip rectangle, or `NULL` if the output should not be clipped. [ allow-none ]
``widget`` | the widget. [ allow-none ]
``detail`` | a style detail. [ allow-none ]
``x`` | the x position to draw the expander at
``y`` | the y position to draw the expander at
``expander.style`` | the style to draw the expander in; determines whether the expander is collapsed, expanded, or in an intermediate state.

### Author(s)

Derived by RGtkGen from GTK+ documentation

[Package RGtk2 version 2.20.36.3 Index]