Changing and image's image (R2)

Is this the happening place for REBOL support questions? It's too bad that REBOL 2 got replaced before it got thoroughly documented. I want to put some "indicator lights" on a window, as shown below: R E B O L [ ] view center-face layout [ IND-1: image 50x50 %GreenCheck.png IND-2: image 50x50 %OrangeQuestion.png IND-3: image 50x50 %RedX.png ] But, what I REALLY want to do is have each of those indicators be a DIFFERENT image depending on some condition that exists when I show the window. In other words, IND-1 might be the GreenCheck.png file if some condition is true, otherwise it might be the RedX.png file. In addition, I might want the image for each indicator to change while the window is displayed (on a timer perhaps, or in response to a button). In other words, IND-3 might start as RedX.png, but then I might do something and click a "recheck" button, and then the image for IND-3 would change to GreenCheck.png. Can anyone point down the right path to accomplish that, if it indeed can be done? Thank you.

Hi Steven, You can set the /image property of an image style, to change the displayed image: R E B O L [] GreenCheck: to-image layout/tight [check green] RedCheck: to-image layout/tight [check red] green: true view center-face layout [ IND-1: image GreenCheck btn "Change" [ either green [ IND-1/image: RedCheck green: false ] [ IND-1/image: GreenCheck green: true ] show IND-1 ] ]

For some simple cases, you may just want to use the toggle widget (or some stylized variation for your needs): R E B O L [] GreenCheck: to-image layout/tight [check green] RedCheck: to-image layout/tight [check red] view layout [ toggle 50x50 GreenCheck RedCheck ]

Thank you, that got me going. Here is my final test script, for reference. R E B O L [] Title: "Indicator light demo" ;; Create images for our indicator lights GREEN-CHECK: load %GreenCheck.png RED-X: load %RedX.png ;; For testing, make lights come up red, for "bad" IND-1-OK: false IND-2-OK: false IND-3-OK: false ;; These procedures set the indicators depending on conditions CHECK-IND-1: does [ either IND-1-OK [ IND-1/image: GREEN-CHECK ] [ IND-1/image: RED-X ] show IND-1 ] CHECK-IND-2: does [ either IND-2-OK [ IND-2/image: GREEN-CHECK ] [ IND-2/image: RED-X ] show IND-2 ] CHECK-IND-3: does [ either IND-3-OK [ IND-3/image: GREEN-CHECK ] [ IND-3/image: RED-X ] show IND-3 ] ;; Main window, default indicators are green for OK MAIN-WINDOW: layout [ across IND-1: image 50x50 GREEN-CHECK button "Recheck" [IND-1-OK: true CHECK-IND-1] return IND-2: image 50x50 GREEN-CHECK button "Recheck" [IND-2-OK: true CHECK-IND-2] return IND-3: image 50x50 GREEN-CHECK button "Recheck" [IND-3-OK: true CHECK-IND-3] ] ;; Before we view window, check for initial states of indicators CHECK-IND-1 CHECK-IND-2 CHECK-IND-3 ;; Now show the main window view center-face MAIN-WINDOW

I have to point out something interesting about this situation. There are situations of paid software support where one has a question, posts it to the appropriate support place, and then maybe waits on hold on the phone or gets an email response some time later. Here, I am using a programming language used by a few dozen people in the whole world, and I asked a question and got an answer in TEN MINUTES. This seems like something that should be on some list of "best-kept secrets of computer programming" or something like that.

Glad to see you got it working. I think one of the reasons you see so much support among Rebolers is that the answers are usually really simple and quick to provide ;)