I'am testing the testimg.prg and found a SetAlpha() function, but i dont know how to use it.
any help about this function ?
tks
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Romeo ,
a Alphablended Image is needed, in case You want to show a SHADOW
To show a simple background transparent, You can use a normal color
SetAlpha( .F. ) shows the transparent-area of a ALPHAblended image as a BLACK color
I don't know any reason to use it.
But You can use something like :
if IsAlpha( aTemp[ n ][ 1 ] )
to detect, if a image includes a alpha-channel
Very useful to download PIXELFORMER
Some links
viewtopic.php?f=3&t=23687&p=127412#p127412
viewtopic.php?f=3&t=17288&p=89855&hilit=pixelformer#p89855
A alphablended image ( BMP or PNG ) is used to show a shadow and a transparent level of a color ( yellow ).
A non alphablended image uses the background-color to be transparent.
best regards
Uwe
a Alphablended Image is needed, in case You want to show a SHADOW
To show a simple background transparent, You can use a normal color
SetAlpha( .F. ) shows the transparent-area of a ALPHAblended image as a BLACK color
I don't know any reason to use it.
But You can use something like :
if IsAlpha( aTemp[ n ][ 1 ] )
to detect, if a image includes a alpha-channel
Very useful to download PIXELFORMER
Some links
viewtopic.php?f=3&t=23687&p=127412#p127412
viewtopic.php?f=3&t=17288&p=89855&hilit=pixelformer#p89855
A alphablended image ( BMP or PNG ) is used to show a shadow and a transparent level of a color ( yellow ).
A non alphablended image uses the background-color to be transparent.
best regards
Uwe
Since 1995 ( the first release of FW 1.9 )
i work with FW.
If you have any questions about special functions, maybe i can help.
i work with FW.
If you have any questions about special functions, maybe i can help.
many many tks
R
Uwe,
many thanks