[ Version ( since = "1.38" ) ]
public void set_alpha (RenderPart part, uint16 alpha)
Sets the alpha for part of the rendering.
Note that the alpha may only be used if a color is specified for part as well.
| this |
a `PangoRenderer` |
| part |
the part to set the alpha for |
| alpha |
an alpha value between 1 and 65536, or 0 to unset the alpha |