Today I decided I would tackle color and start working with color.RGBA
TextArea.BackColor = Color.RGBA(000, 061, 255, 208) //Should be a light blue.
On my MAC, i pulled out the calibrator for my laptop and it reported everything was okay.
I put the RGBA numbers into my app and then checked my color with the OS’s Digital Color Meter. I expected the numbers would be close.
They weren’t. The RGB values are 208, 226, 255
I don’t have any red in the code. There is much more Green.
Why?
Please read my recent blog post about color spaces:
http://www.mbs-plugins.de/archive/2018-01-20/Colorspaces_in_MacOS_with_Xojo/monkeybreadsoftware_blog_xojo
Xojo uses Generic RGB colorspace on Mac.
Possibly because you have a mostly transparent alpha value, the red could be coming from whatever color is behind the textarea?
Thanks, Christian. I had thought Mac was better at color. Not exactly anymore.
I found a link on MSDN about Generic RGB.
Tim: I have a window that does have the standard grey (236,236,236) but would that affect it.
You have an alpha value that’s mostly transparent. I would think that if that color is actually transparent for the TextArea’s background that the window color would seep through causing the red value to not be 0.
Edit: The reason I say it like this is because applying a transparent color to the background of a Window doesn’t work, you need declares to make a window transparent. I’m not sure if the same applies to controls.
For the moment, it’s definitely the transparency and may be MAC.
I eliminated the Alpha and Red mostly disappeared.
I changed it to (with half transparency)
Color.RGBA(000, 061, 255, 120)and the Red went 120.