RGBA_A

Returns the alpha component (as an Integer) from a given RGBA colour value.

Syntax: RGBA_A( RGBA )

RGBA

required A Long RGBA colour value, of the kind returned by RGBA.

The return value is the alpha (opacity) component in the range 0--255: 0 is fully transparent and 255 is fully opaque.

Example

This example extracts the alpha component from a colour built with RGBA.

Dim MyColor As Long
Dim AlphaComponent As Integer
MyColor = RGBA(255, 0, 0, 128)
AlphaComponent = RGBA_A(MyColor)      ' Returns 128.

See Also

• RGBA, RGB functions
• RGB_R, RGB_G, RGB_B functions