1995-1996
Spencer Kimball & Peter Mattis
Returns TRUE if the drawable has an alpha channel.
This procedure returns whether the specified drawable has an alpha channel. This can only be true for layers, and the associated type will be one of: { RGBA , GRAYA, INDEXEDA }.
unknown
Type | Name | Description |
---|---|---|
PF_DRAWABLE | drawable | The drawable |
Type | Name | Description |
---|---|---|
PF_INT | has-alpha | Does the drawable have an alpha channel? (TRUE or FALSE) |