GtkTextMark: GTK+ 3 Reference Manual

## GtkTextMark GtkTextMark — A position in the buffer preserved across buffer modifications |

## Functions

GtkTextMark * | gtk_text_mark_new ()
void | gtk_text_mark_set_visible ()
gboolean | gtk_text_mark_get_visible ()
gboolean | gtk_text_mark_get_deleted ()
const gchar * | gtk_text_mark_get_name ()
GtkTextBuffer * | gtk_text_mark_get_buffer ()
gboolean | gtk_text_mark_get_left_gravity ()

## Properties

gboolean | left-gravity | Read / Write / Construct Only
char * | name | Read / Write / Construct Only

## Types and Values

struct | GtkTextMark

## Object Hierarchy

        GObject
        ╰── GtkTextMark

## Includes

    #include <gtk/gtk.h>

## Description

You may wish to begin by reading the text widget conceptual overview which gives an overview of all the objects and data types related to the text widget and how they work together.

A GtkTextMark is like a bookmark in a text buffer; it preserves a position in the text. You can convert the mark to an iterator using `gtk_text_buffer_get_iter_at_mark()`. Unlike iterators, marks remain valid across buffer mutations, because their behavior is defined when text is inserted or deleted. When text containing a mark is deleted, the mark remains in the position originally occupied by the deleted text. When text is inserted at a mark, a mark with “left gravity” will be moved to the beginning of the newly-inserted text, and a mark with “right gravity” will be moved to the end.

Note that “left” and “right” here refer to logical direction (left is the toward the start of the buffer); in some languages such as Hebrew the logically-leftmost text is not actually on the left when displayed.

Marks are reference counted, but the reference count only controls the validity of the memory; marks can be deleted from the buffer at any time with `gtk_text_buffer_delete_mark()`. Once deleted from the buffer, a mark is essentially useless.

Marks optionally have names; these can be convenient to avoid passing the GtkTextMark object around.

Marks are typically created using the `gtk_text_buffer_create_mark()` function.

## Functions

### gtk_text_mark_new ()

    GtkTextMark *
    gtk_text_mark_new (const gchar *name,
                       gboolean left_gravity);

Creates a text mark. Add it to a buffer using `gtk_text_buffer_add_mark()`. If `name` is `NULL`, the mark is anonymous; otherwise, the mark can be retrieved by name using `gtk_text_buffer_get_mark()`. If a mark has left gravity, and text is inserted at the mark’s current location, the mark will be moved to the left of the newly-inserted text. If the mark has right gravity (`left_gravity` = `FALSE`), the mark will end up on the right of newly-inserted text. The standard left-to-right cursor is a mark with right gravity (when you type, the cursor stays on the right side of the text you’re typing).

#### Parameters

name | mark name or `NULL`. | [allow-none]
left_gravity | whether the mark should have left gravity |

#### Returns

new GtkTextMark

Since: 2.12

### gtk_text_mark_set_visible ()

    void
    gtk_text_mark_set_visible (GtkTextMark *mark,
                               gboolean setting);

Sets the visibility of `mark` ; the insertion point is normally visible, i.e. you can see it as a vertical bar. Also, the text widget uses a visible mark to indicate where a drop will occur when dragging-and-dropping text. Most other marks are not visible. Marks are not visible by default.

#### Parameters

mark | a GtkTextMark |
setting | visibility of mark |

### gtk_text_mark_get_visible ()

    gboolean
    gtk_text_mark_get_visible (GtkTextMark *mark);

Returns `TRUE` if the mark is visible (i.e. a cursor is displayed for it).

#### Parameters

mark | a GtkTextMark |

#### Returns

`TRUE` if visible

### gtk_text_mark_get_deleted ()

    gboolean
    gtk_text_mark_get_deleted (GtkTextMark *mark);

Returns `TRUE` if the mark has been removed from its buffer with `gtk_text_buffer_delete_mark()`. See `gtk_text_buffer_add_mark()` for a way to add it to a buffer again.

#### Parameters

mark | a GtkTextMark |

#### Returns

whether the mark is deleted

### gtk_text_mark_get_name ()

    const gchar *
    gtk_text_mark_get_name (GtkTextMark *mark);

Returns the mark name; returns NULL for anonymous marks.

#### Parameters

mark | a GtkTextMark |

#### Returns

mark name.

[nullable]

### gtk_text_mark_get_buffer ()

    GtkTextBuffer *
    gtk_text_mark_get_buffer (GtkTextMark *mark);

Gets the buffer this mark is located inside, or `NULL` if the mark is deleted.

#### Parameters

mark | a GtkTextMark |

#### Returns

the mark’s GtkTextBuffer.

[transfer none]

### gtk_text_mark_get_left_gravity ()

    gboolean
    gtk_text_mark_get_left_gravity (GtkTextMark *mark);

Determines whether the mark has left gravity.

#### Parameters

mark | a GtkTextMark |

#### Returns

`TRUE` if the mark has left gravity, `FALSE` otherwise

## Types and Values

### struct GtkTextMark

    struct GtkTextMark;

## Property Details

### The `“left-gravity”` property

      “left-gravity”             gboolean

Whether the mark has left gravity. When text is inserted at the mark’s current location, if the mark has left gravity it will be moved to the left of the newly-inserted text, otherwise to the right.

Owner: GtkTextMark

Flags: Read / Write / Construct Only

Default value: FALSE

### The `“name”` property

      “name”                     char *

The name of the mark or `NULL` if the mark is anonymous.

Owner: GtkTextMark

Flags: Read / Write / Construct Only

Default value: NULL