GtkEditable {RGtk2} | R Documentation

## GtkEditable

### Description

Interface for text-editing widgets

### Methods and Functions

`gtkEditableSelectRegion(object, start, end)`
`gtkEditableGetSelectionBounds(object)`
`gtkEditableInsertText(object, new.text, position = 0)`
`gtkEditableDeleteText(object, start.pos, end.pos)`
`gtkEditableGetChars(object, start.pos, end.pos)`
`gtkEditableCutClipboard(object)`
`gtkEditableCopyClipboard(object)`
`gtkEditablePasteClipboard(object)`
`gtkEditableDeleteSelection(object)`
`gtkEditableSetPosition(object, position)`
`gtkEditableGetPosition(object)`
`gtkEditableSetEditable(object, is.editable)`
`gtkEditableGetEditable(object)`

### Hierarchy

    GInterface
       +----GtkEditable

### Implementations

GtkEditable is implemented by `GtkEntry`, `GtkOldEditable`, `GtkSpinButton` and GtkText.

### Detailed Description

The `GtkEditable` interface is an interface which should be implemented by text editing widgets, such as `GtkEntry` and `GtkText`. It contains functions for generically manipulating an editable widget, a large number of action signals used for key bindings, and several signals that an application can connect to to modify the behavior of a widget.

As an example of the latter usage, by connecting the following handler to "insert_text", an application can convert all entry into a widget into uppercase.

Forcing entry to uppercase.

    insert_text_handler <- function(editable, text, length, position, id)
    {
      result <- toupper(text)
      gSignalHandlerBlock(editable, id)
      editable$insertText(result, length, position)
      gSignalHandlerUnblock(editable, id)
    }

### Structures

`GtkEditable`

  The `GtkEditable` structure is an opaque structure whose members cannot be directly accessed.

### Signals

`changed(editable, user.data)`

  The ::changed signal is emitted at the end of a single user-visible operation on the contents of the `GtkEditable`.

  E.g., a paste operation that replaces the contents of the selection will cause only one signal emission (even though it is implemented by first deleting the selection, then inserting the new content, and may cause multiple ::notify::text signals to be emitted).

  `editable`

    the object which received the signal

  `user.data`

    user data set when the signal handler was connected.

`delete-text(editable, start.pos, end.pos, user.data)`

  This signal is emitted when text is deleted from the widget by the user. The default handler for this signal will normally be responsible for deleting the text, so by connecting to this signal and then stopping the signal with `gSignalStopEmission`, it is possible to modify the range of deleted text, or prevent it from being deleted entirely. The `start.pos` and `end.pos` parameters are interpreted as for `gtkEditableDeleteText`.

  `editable`

    the object which received the signal

  `start.pos`

    the starting position

  `end.pos`

    the end position

  `user.data`

    user data set when the signal handler was connected.

`insert-text(editable, new.text, new.text.length, position, user.data)`

  This signal is emitted when text is inserted into the widget by the user. The default handler for this signal will normally be responsible for inserting the text, so by connecting to this signal and then stopping the signal with `gSignalStopEmission`, it is possible to modify the inserted text, or prevent it from being inserted entirely.

  `editable`

    the object which received the signal

  `new.text`

    the new text to insert

  `new.text.length`

    the length of the new text, in bytes, or -1 if new_text is nul-terminated

  `position`

    the position, in characters, at which to insert the new text. this is an in-out parameter. After the signal emission is finished, it should point after the newly inserted text.

  `user.data`

    user data set when the signal handler was connected.

### Author(s)

Derived by RGtkGen from GTK+ documentation

### References

https://developer-old.gnome.org/gtk2/stable/GtkEditable.html

[Package RGtk2 version 2.20.40 Index]