Android Question DrawThroughMask create mask from code

[udg]

Hi all,
having some spare time before my next meeting I downloaded class BitmapCreatorEffects to play with its nice effects.
DrawThroughMask soon captured my attention since it allows a nice effect I programmed in the old DOS days.

I'd like not to use images for background and mask as in the given example. So I tried to use a couple of labels, taking snapshots of each then calling the effect routine passing those B4xBitmaps as arguments and a B4xView as the destination object.
Unfortunately, I can see the background as is, but not the mask applied to it. So my question is: should I use any special setting for the mask ( I tried transparency to no avail).

This is the quick and dirty code I tried so far:

    Dim mytext As String = "I LOVE YOU"
    Dim sb As StringBuilder
    sb.Initialize
    For i = 0 To 50 
        sb.Append(mytext)
    Next
    lblSentence.Text = sb.ToString
    lblSentence.TextSize = 10
    lblSentence.Color = xui.Color_White
    lblSentence.TextColor = xui.Color_Black
    
    lblChar.Text = "K"
    'lblChar.TextColor = xui.Color_Transparent
    lblChar.Color = xui.Color_White

    effects.Initialize
    OriginalBmp = lblSentence.Snapshot
    
    Dim mask As B4XBitmap = lblChar.Snapshot
    mask = mask.Resize(OriginalBmp.Width, OriginalBmp.Height,False)
    'Dim mask As B4XBitmap = xui.LoadBitmapResize(File.DirAssets, "mask.png", OriginalBmp.Width, OriginalBmp.Height, False)  <-- this one works OK
    imgChar.SetBitmap(effects.DrawThroughMask(OriginalBmp, mask))

I even tried an additional and final imgChar.Update, but nothing. Ok, 4PM meeting is approaching..I'll try again later..

 

[udg]

Code above amended and now it works as expected.

'...
    lblChar.Text = "K"
    lblChar.Color = xui.Color_Transparent
    lblChar.TextSize = 160

    effects.Initialize
    OriginalBmp = lblFrase.Snapshot
    Dim mask As B4XBitmap = lblChar.Snapshot.Resize(OriginalBmp.Width, OriginalBmp.Height, False)
    
    Dim mybitmap As B4XBitmap = effects.DrawThroughMask(OriginalBmp, mask)
    imgChar.setbitmap(mybitmap)