Method Cairo.Context()->paint_with_alpha()
- Method
paint_with_alpha
 voidpaint_with_alpha(floatalpha)- Description
 A drawing operator that paints the current source everywhere within the current clip region using a mask of constant alpha value alpha . The effect is similar to paint(), but the drawing is faded out using the alpha value.
- Parameter 
alpha alpha value, between 0 (transparent) and 1 (opaque)