## GtkViewport

GtkViewport — An adapter which makes widgets scrollable

## Synopsis

    #include <gtk/gtk.h>

    struct              GtkViewport;
    GtkWidget *         gtk_viewport_new                    (GtkAdjustment *hadjustment,
                                                             GtkAdjustment *vadjustment);
    GtkAdjustment *     gtk_viewport_get_hadjustment        (GtkViewport *viewport);
    GtkAdjustment *     gtk_viewport_get_vadjustment        (GtkViewport *viewport);
    void                gtk_viewport_set_hadjustment        (GtkViewport *viewport,
                                                             GtkAdjustment *adjustment);
    void                gtk_viewport_set_vadjustment        (GtkViewport *viewport,
                                                             GtkAdjustment *adjustment);
    void                gtk_viewport_set_shadow_type        (GtkViewport *viewport,
                                                             GtkShadowType type);
    GtkShadowType       gtk_viewport_get_shadow_type        (GtkViewport *viewport);
    GdkWindow *         gtk_viewport_get_bin_window         (GtkViewport *viewport);
    GdkWindow *         gtk_viewport_get_view_window        (GtkViewport *viewport);

## Object Hierarchy

      GObject
       +----GInitiallyUnowned
             +----GtkObject
                   +----GtkWidget
                         +----GtkContainer
                               +----GtkBin
                                     +----GtkViewport

## Implemented Interfaces

GtkViewport implements AtkImplementorIface and GtkBuildable.

## Properties

      "hadjustment"              GtkAdjustment*        : Read / Write / Construct
      "shadow-type"              GtkShadowType         : Read / Write
      "vadjustment"              GtkAdjustment*        : Read / Write / Construct

## Signals

      "set-scroll-adjustments"                         : Action

## Description

The GtkViewport widget acts as an adaptor class, implementing scrollability for child widgets that lack their own scrolling capabilities. Use GtkViewport to scroll child widgets such as GtkTable, GtkBox, and so on.

If a widget has native scrolling abilities, such as GtkTextView, GtkTreeView or GtkIconview, it can be added to a GtkScrolledWindow with `gtk_container_add()`. If a widget does not, you must first add the widget to a GtkViewport, then add the viewport to the scrolled window. The convenience function `gtk_scrolled_window_add_with_viewport()` does exactly this, so you can ignore the presence of the viewport.

## Details

### struct GtkViewport

    struct GtkViewport;

### gtk_viewport_new ()

    GtkWidget *         gtk_viewport_new                    (GtkAdjustment *hadjustment,
                                                             GtkAdjustment *vadjustment);

Creates a new GtkViewport with the given adjustments.

`hadjustment` : | horizontal adjustment.
`vadjustment` : | vertical adjustment.
Returns : | a new GtkViewport.

### gtk_viewport_get_hadjustment ()

    GtkAdjustment *     gtk_viewport_get_hadjustment        (GtkViewport *viewport);

Returns the horizontal adjustment of the viewport.

`viewport` : | a GtkViewport.
Returns : | the horizontal adjustment of `viewport`. [transfer none]

### gtk_viewport_get_vadjustment ()

    GtkAdjustment *     gtk_viewport_get_vadjustment        (GtkViewport *viewport);

Returns the vertical adjustment of the viewport.

`viewport` : | a GtkViewport.
Returns : | the vertical adjustment of `viewport`. [transfer none]

### gtk_viewport_set_hadjustment ()

    void                gtk_viewport_set_hadjustment        (GtkViewport *viewport,
                                                             GtkAdjustment *adjustment);

Sets the horizontal adjustment of the viewport.

`viewport` : | a GtkViewport.
`adjustment` : | a GtkAdjustment. [allow-none]

### gtk_viewport_set_vadjustment ()

    void                gtk_viewport_set_vadjustment        (GtkViewport *viewport,
                                                             GtkAdjustment *adjustment);

Sets the vertical adjustment of the viewport.

`viewport` : | a GtkViewport.
`adjustment` : | a GtkAdjustment. [allow-none]

### gtk_viewport_set_shadow_type ()

    void                gtk_viewport_set_shadow_type        (GtkViewport *viewport,
                                                             GtkShadowType type);

Sets the shadow type of the viewport.

`viewport` : | a GtkViewport.
`type` : | the new shadow type.

### gtk_viewport_get_shadow_type ()

    GtkShadowType       gtk_viewport_get_shadow_type        (GtkViewport *viewport);

Gets the shadow type of the GtkViewport. See `gtk_viewport_set_shadow_type()`.

`viewport` : | a GtkViewport
Returns : | the shadow type

### gtk_viewport_get_bin_window ()

    GdkWindow *         gtk_viewport_get_bin_window         (GtkViewport *viewport);

Gets the bin window of the GtkViewport.

`viewport` : | a GtkViewport
Returns : | a GdkWindow. [transfer none]

Since 2.20

### gtk_viewport_get_view_window ()

    GdkWindow *         gtk_viewport_get_view_window        (GtkViewport *viewport);

Gets the view window of the GtkViewport.

`viewport` : | a GtkViewport
Returns : | a GdkWindow. [transfer none]

Since 2.22

## Property Details

### The `"hadjustment"` property

      "hadjustment"              GtkAdjustment*        : Read / Write / Construct

The GtkAdjustment that determines the values of the horizontal position for this viewport.

### The `"shadow-type"` property

      "shadow-type"              GtkShadowType         : Read / Write

Determines how the shadowed box around the viewport is drawn.

Default value: GTK_SHADOW_IN

### The `"vadjustment"` property

      "vadjustment"              GtkAdjustment*        : Read / Write / Construct

The GtkAdjustment that determines the values of the vertical position for this viewport.

## Signal Details

### The `"set-scroll-adjustments"` signal

    void                user_function                      (GtkViewport   *horizontal,
                                                            GtkAdjustment *vertical,
                                                            GtkAdjustment *arg2,
                                                            gpointer       user_data)       : Action

Set the scroll adjustments for the viewport. Usually scrolled containers like GtkScrolledWindow will emit this signal to connect two instances of GtkScrollbar to the scroll directions of the GtkViewport.

`horizontal` : | the horizontal GtkAdjustment
`vertical` : | the vertical GtkAdjustment
`user_data` : | user data set when the signal handler was connected.

## See Also

GtkScrolledWindow, GtkAdjustment