## GtkPaned

GtkPaned — A widget with two adjustable panes

## Synopsis

    #include <gtk/gtk.h>

    struct              GtkPaned;
    GtkWidget *         gtk_paned_new                       (GtkOrientation orientation);
    void                gtk_paned_add1                      (GtkPaned *paned,
                                                             GtkWidget *child);
    void                gtk_paned_add2                      (GtkPaned *paned,
                                                             GtkWidget *child);
    void                gtk_paned_pack1                     (GtkPaned *paned,
                                                             GtkWidget *child,
                                                             gboolean resize,
                                                             gboolean shrink);
    void                gtk_paned_pack2                     (GtkPaned *paned,
                                                             GtkWidget *child,
                                                             gboolean resize,
                                                             gboolean shrink);
    GtkWidget *         gtk_paned_get_child1                (GtkPaned *paned);
    GtkWidget *         gtk_paned_get_child2                (GtkPaned *paned);
    void                gtk_paned_set_position              (GtkPaned *paned,
                                                             gint position);
    gint                gtk_paned_get_position              (GtkPaned *paned);
    GdkWindow *         gtk_paned_get_handle_window         (GtkPaned *paned);

## Object Hierarchy

      GObject
       +----GInitiallyUnowned
             +----GtkWidget
                   +----GtkContainer
                         +----GtkPaned
                               +----GtkHPaned
                               +----GtkVPaned

## Implemented Interfaces

GtkPaned implements AtkImplementorIface, GtkBuildable and GtkOrientable.

## Properties

      "max-position"             gint                  : Read
      "min-position"             gint                  : Read
      "position"                 gint                  : Read / Write
      "position-set"             gboolean              : Read / Write

## Child Properties

      "resize"                   gboolean              : Read / Write
      "shrink"                   gboolean              : Read / Write

## Style Properties

      "handle-size"              gint                  : Read

## Signals

      "accept-position"                                : Action
      "cancel-position"                                : Action
      "cycle-child-focus"                              : Action
      "cycle-handle-focus"                             : Action
      "move-handle"                                    : Action
      "toggle-handle-focus"                            : Action

## Description

GtkPaned has two panes, arranged either horizontally or vertically. The division between the two panes is adjustable by the user by dragging a handle.

Child widgets are added to the panes of the widget with `gtk_paned_pack1()` and `gtk_paned_pack2()`. The division between the two children is set by default from the size requests of the children, but it can be adjusted by the user.

A paned widget draws a separator between the two child widgets and a small handle that the user can drag to adjust the division. It does not draw any relief around the children or around the separator. (The space in which the separator is called the gutter.) Often, it is useful to put each child inside a GtkFrame with the shadow type set to `GTK_SHADOW_IN` so that the gutter appears as a ridge. No separator is drawn if one of the children is missing.

Each child has two options that can be set, `resize` and `shrink`. If `resize` is true, then when the GtkPaned is resized, that child will expand or shrink along with the paned widget. If `shrink` is true, then that child can be made smaller than its requisition by the user. Setting `shrink` to `FALSE` allows the application to set a minimum size. If `resize` is false for both children, then this is treated as if `resize` is true for both children.

The application can set the position of the slider as if it were set by the user, by calling `gtk_paned_set_position()`.

Example 91. Creating a paned widget with minimum sizes.

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13

    GtkWidget *hpaned = gtk_paned_new (GTK_ORIENTATION_HORIZONTAL);
    GtkWidget *frame1 = gtk_frame_new (NULL);
    GtkWidget *frame2 = gtk_frame_new (NULL);
    gtk_frame_set_shadow_type (GTK_FRAME (frame1), GTK_SHADOW_IN);
    gtk_frame_set_shadow_type (GTK_FRAME (frame2), GTK_SHADOW_IN);

    gtk_widget_set_size_request (hpaned, 200, -1);

    gtk_paned_pack1 (GTK_PANED (hpaned), frame1, TRUE, FALSE);
    gtk_widget_set_size_request (frame1, 50, -1);

    gtk_paned_pack2 (GTK_PANED (hpaned), frame2, FALSE, FALSE);
    gtk_widget_set_size_request (frame2, 50, -1);

## Details

### struct GtkPaned

    struct GtkPaned;

### gtk_paned_new ()

    GtkWidget *         gtk_paned_new                       (GtkOrientation orientation);

Creates a new GtkPaned widget.

`orientation` : | the paned's orientation.
Returns : | a new GtkPaned.

Since 3.0

### gtk_paned_add1 ()

    void                gtk_paned_add1                      (GtkPaned *paned,
                                                             GtkWidget *child);

Adds a child to the top or left pane with default parameters. This is equivalent to `gtk_paned_pack1 (paned, child, FALSE, TRUE)`.

`paned` : | a paned widget
`child` : | the child to add

### gtk_paned_add2 ()

    void                gtk_paned_add2                      (GtkPaned *paned,
                                                             GtkWidget *child);

Adds a child to the bottom or right pane with default parameters. This is equivalent to `gtk_paned_pack2 (paned, child, TRUE, TRUE)`.

`paned` : | a paned widget
`child` : | the child to add

### gtk_paned_pack1 ()

    void                gtk_paned_pack1                     (GtkPaned *paned,
                                                             GtkWidget *child,
                                                             gboolean resize,
                                                             gboolean shrink);

Adds a child to the top or left pane.

`paned` : | a paned widget
`child` : | the child to add
`resize` : | should this child expand when the paned widget is resized.
`shrink` : | can this child be made smaller than its requisition.

### gtk_paned_pack2 ()

    void                gtk_paned_pack2                     (GtkPaned *paned,
                                                             GtkWidget *child,
                                                             gboolean resize,
                                                             gboolean shrink);

Adds a child to the bottom or right pane.

`paned` : | a paned widget
`child` : | the child to add
`resize` : | should this child expand when the paned widget is resized.
`shrink` : | can this child be made smaller than its requisition.

### gtk_paned_get_child1 ()

    GtkWidget *         gtk_paned_get_child1                (GtkPaned *paned);

Obtains the first child of the paned widget.

`paned` : | a GtkPaned widget
Returns : | first child, or `NULL` if it is not set. [transfer none]

Since 2.4

### gtk_paned_get_child2 ()

    GtkWidget *         gtk_paned_get_child2                (GtkPaned *paned);

Obtains the second child of the paned widget.

`paned` : | a GtkPaned widget
Returns : | second child, or `NULL` if it is not set. [transfer none]

Since 2.4

### gtk_paned_set_position ()

    void                gtk_paned_set_position              (GtkPaned *paned,
                                                             gint position);

Sets the position of the divider between the two panes.

`paned` : | a GtkPaned widget
`position` : | pixel position of divider, a negative value means that the position is unset.

### gtk_paned_get_position ()

    gint                gtk_paned_get_position              (GtkPaned *paned);

Obtains the position of the divider between the two panes.

`paned` : | a GtkPaned widget
Returns : | position of the divider

### gtk_paned_get_handle_window ()

    GdkWindow *         gtk_paned_get_handle_window         (GtkPaned *paned);

Returns the GdkWindow of the handle. This function is useful when handling button or motion events because it enables the callback to distinguish between the window of the paned, a child and the handle.

`paned` : | a GtkPaned
Returns : | the paned's handle window. [transfer none]

Since 2.20

## Property Details

### The `"max-position"` property

      "max-position"             gint                  : Read

The largest possible value for the position property. This property is derived from the size and shrinkability of the widget's children.

Allowed values: >= 0

Default value: 2147483647

Since 2.4

### The `"min-position"` property

      "min-position"             gint                  : Read

The smallest possible value for the position property. This property is derived from the size and shrinkability of the widget's children.

Allowed values: >= 0

Default value: 0

Since 2.4

### The `"position"` property

      "position"                 gint                  : Read / Write

Position of paned separator in pixels (0 means all the way to the left/top).

Allowed values: >= 0

Default value: 0

### The `"position-set"` property

      "position-set"             gboolean              : Read / Write

TRUE if the Position property should be used.

Default value: FALSE

## Child Property Details

### The `"resize"` child property

      "resize"                   gboolean              : Read / Write

The "resize" child property determines whether the child expands and shrinks along with the paned widget.

Default value: TRUE

Since 2.4

### The `"shrink"` child property

      "shrink"                   gboolean              : Read / Write

The "shrink" child property determines whether the child can be made smaller than its requisition.

Default value: TRUE

Since 2.4

## Style Property Details

### The `"handle-size"` style property

      "handle-size"              gint                  : Read

Width of handle.

Allowed values: >= 0

Default value: 5

## Signal Details

### The `"accept-position"` signal

    gboolean            user_function                      (GtkPaned *widget,
                                                            gpointer  user_data)      : Action

The ::accept-position signal is a keybinding signal which gets emitted to accept the current position of the handle when moving it using key bindings.

The default binding for this signal is Return or Space.

`widget` : | the object that received the signal
`user_data` : | user data set when the signal handler was connected.

Since 2.0

### The `"cancel-position"` signal

    gboolean            user_function                      (GtkPaned *widget,
                                                            gpointer  user_data)      : Action

The ::cancel-position signal is a keybinding signal which gets emitted to cancel moving the position of the handle using key bindings. The position of the handle will be reset to the value prior to moving it.

The default binding for this signal is Escape.

`widget` : | the object that received the signal
`user_data` : | user data set when the signal handler was connected.

Since 2.0

### The `"cycle-child-focus"` signal

    gboolean            user_function                      (GtkPaned *widget,
                                                            gboolean  reversed,
                                                            gpointer  user_data)      : Action

The ::cycle-child-focus signal is a keybinding signal which gets emitted to cycle the focus between the children of the paned.

The default binding is f6.

`widget` : | the object that received the signal
`reversed` : | whether cycling backward or forward
`user_data` : | user data set when the signal handler was connected.

Since 2.0

### The `"cycle-handle-focus"` signal

    gboolean            user_function                      (GtkPaned *widget,
                                                            gboolean  reversed,
                                                            gpointer  user_data)      : Action

The ::cycle-handle-focus signal is a keybinding signal which gets emitted to cycle whether the paned should grab focus to allow the user to change position of the handle by using key bindings.

The default binding for this signal is f8.

`widget` : | the object that received the signal
`reversed` : | whether cycling backward or forward
`user_data` : | user data set when the signal handler was connected.

Since 2.0

### The `"move-handle"` signal

    gboolean            user_function                      (GtkPaned     *widget,
                                                            GtkScrollType scroll_type,
                                                            gpointer      user_data)        : Action

The ::move-handle signal is a keybinding signal which gets emitted to move the handle when the user is using key bindings to move it.

`widget` : | the object that received the signal
`scroll_type` : | a GtkScrollType
`user_data` : | user data set when the signal handler was connected.

Since 2.0

### The `"toggle-handle-focus"` signal

    gboolean            user_function                      (GtkPaned *widget,
                                                            gpointer  user_data)      : Action

The ::toggle-handle-focus is a keybinding signal which gets emitted to accept the current position of the handle and then move focus to the next widget in the focus chain.

The default binding is Tab.

`widget` : | the object that received the signal
`user_data` : | user data set when the signal handler was connected.

Since 2.0