gdkPixbufRenderToDrawableAlpha {RGtk2} | R Documentation

## gdkPixbufRenderToDrawableAlpha

### Description

Renders a rectangular portion of a pixbuf to a drawable. The destination drawable must have a colormap. All windows have a colormap, however, pixmaps only have colormap by default if they were created with a non-`NULL` window argument. Otherwise a colormap must be set on them with gdk_drawable_set_colormap. WARNING: `gdk_pixbuf_render_to_drawable_alpha` has been deprecated since version 2.4 and should not be used in newly-written code. This function is obsolete. Use `gdkDrawPixbuf` instead.

### Usage

    gdkPixbufRenderToDrawableAlpha(object, drawable, src.x = 0, src.y = 0,
        dest.x, dest.y, width = -1, height = -1, alpha.mode = NULL,
        alpha.threshold = NULL, dither = "GDK_RGB_DITHER_NORMAL",
        x.dither = 0, y.dither = 0)

### Arguments

``object`` | A pixbuf.
``drawable`` | Destination drawable.
``src.x`` | Source X coordinate within pixbuf.
``src.y`` | Source Y coordinates within pixbuf.
``dest.x`` | Destination X coordinate within drawable.
``dest.y`` | Destination Y coordinate within drawable.
``width`` | Width of region to render, in pixels, or -1 to use pixbuf width.
``height`` | Height of region to render, in pixels, or -1 to use pixbuf height.
``alpha.mode`` | Ignored. Present for backwards compatibility.
``alpha.threshold`` | Ignored. Present for backwards compatibility
``dither`` | Dithering mode for GdkRGB.
``x.dither`` | X offset for dither.
``y.dither`` | Y offset for dither.

### Details

On older X servers, rendering pixbufs with an alpha channel involves round trips to the X server, and may be somewhat slow.

### Author(s)

Derived by RGtkGen from GTK+ documentation

[Package RGtk2 version 2.20.40 Index]