| Extracted from Pike v7.8 release 866 at 2018-07-18.

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GTK2
GTK2.GdkPixbuf

# Method GTK2.GdkPixbuf()->render_threshold_alpha()

Method render_threshold_alpha

  `GTK2.GdkBitmap render_threshold_alpha(int src_x, int src_y, int dest_c, int dest_y, int width, int height, int alpha_threshold)`

Description

  Takes the opacity values in a rectangular portion of a pixbuf and thresholds them to produce a bi-level alpha mask that can be used as a clipping mask for a drawable.