gtkWidgetGetSnapshot: gtkWidgetGetSnapshot
Description
Create a GdkPixmap of the contents of the widget and its children.Usage
gtkWidgetGetSnapshot(object, clip.rect = NULL)
Details
Works even if the widget is obscured. The depth and visual of the
resulting pixmap is dependent on the widget being snapshot and likely
differs from those of a target widget displaying the pixmap.
The function gdkPixbufGetFromDrawable can be used to convert
the pixmap to a visual independant representation.
The snapshot area used by this function is the widget's allocation plus
any extra space occupied by additional windows belonging to this widget
(such as the arrows of a spin button).
Thus, the resulting snapshot pixmap is possibly larger than the allocation.
If clip.rect is non-NULL, the resulting pixmap is shrunken to
match the specified clip_rect. The (x,y) coordinates of clip.rect are
interpreted widget relative. If width or height of clip.rect are 0 or
negative, the width or height of the resulting pixmap will be shrunken
by the respective amount.
For instance a clip.rect { +5, +5, -10, -10 } will
chop off 5 pixels at each side of the snapshot pixmap.
If non-NULL, clip.rect will contain the exact widget-relative snapshot
coordinates upon return. A clip.rect of { -1, -1, 0, 0 }
can be used to preserve the auto-grown snapshot area and use clip.rect
as a pure output parameter.
The returned pixmap can be NULL, if the resulting clip.area was empty.
Since 2.14