gtkFileChooserSetPreviewWidget {RGtk2} | R Documentation

## gtkFileChooserSetPreviewWidget

### Description

Sets an application-supplied widget to use to display a custom preview of the currently selected file. To implement a preview, after setting the preview widget, you connect to the `"update-preview"` signal, and call `gtkFileChooserGetPreviewFilename` or `gtkFileChooserGetPreviewUri` on each change. If you can display a preview of the new file, update your widget and set the preview active using `gtkFileChooserSetPreviewWidgetActive`. Otherwise, set the preview inactive.

### Usage

    gtkFileChooserSetPreviewWidget(object, preview.widget)

### Arguments

``object`` | a `GtkFileChooser`
``preview.widget`` | widget for displaying preview.

### Details

When there is no application-supplied preview widget, or the application-supplied preview widget is not active, the file chooser may display an internally generated preview of the current file or it may display no preview at all. Since 2.4

### Author(s)

Derived by RGtkGen from GTK+ documentation

[Package RGtk2 version 2.20.36.3 Index]