Unable to display message[Solved and Summarised]

Graechan · **Posted:** Wed Dec 14, 2011 9:36 pm **(#1)**

I am trying to display a message that no selection was made and have tried using

(sel (car (gimp-selection-is-empty image))) in the (let* area,

then (if (= sel TRUE) (gimp-message "A Selection is needed to run script.")) in the script

But nothing displays

I am using 2-6-11

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

Maybe in last 2.7 partha build only?

Graechan · **Posted:** Wed Dec 14, 2011 9:55 pm **(#3)**

Sorry I forgot to say I am using my 2.6.11 version

saulgoode · **Posted:** Wed Dec 14, 2011 10:01 pm **(#4)**

Perhaps you have an Error Console open?

Graechan · **Posted:** Wed Dec 14, 2011 10:10 pm **(#5)**

I get messages to screen on other scripts but not mine

Graechan · **Posted:** Wed Dec 14, 2011 10:18 pm **(#6)**

Just noticed that the message displays under the screen next to the 100% box for a few seconds as if it was a tool instruction

I cannot see that I have a error console open anywhere,

If I set this 'gimp-message-set-handler' to error console the error console opens on the screen and displays the message and if set to message box nothing displays.

paynekj · **Posted:** Thu Dec 15, 2011 3:53 am **(#7)**

To me this sounds like a window management problem, so my questions are:
What operating system/window manager?
What settings do you have set for Edit>Preferences>Window Management

Also, I just tried my Xach blurry thing script, which does a similar to yours, but because the message is generated after the (gimp-image-undo-group-start image) I also get another error message about leaving the image undo in an inconsistent state.

I've just noticed that I don't use gimp-message, I use error instead:

Code: Select all

(if (= (car (gimp-selection-is-empty image)) TRUE) (error "No selection found"))

because there's no point in my script continuing if there isn't a selection. And note that gimp-message isn't displayed immediately as GIMP tries to collect all the messages together to display in one dialog rather than lots.

Kevin

Graechan · **Posted:** Thu Dec 15, 2011 5:24 am **(#8)**

I checked in preferences, all there seems normal, I ran your script without selection and message displayed, tried your line of script in same place on my script, and it displays. but no idea what fixed it, will check more.
Thankyou for that I am very releived. :yes

paynekj · **Posted:** Thu Dec 15, 2011 5:32 am **(#9)**

Graechan wrote:

I checked in preferences, all there seems normal, I ran your script without selection and message displayed, tried your line of script in same place on my script, nothing displays. :gaah

Which to me says that it's somewhere in your code that doesn't get executed. If it were me, I'd start throwing in (error "got here") at various places to see what the execution path is!

Kevin

Graechan · **Posted:** Thu Dec 15, 2011 5:48 am **(#10)**

Kevin I seemed to have found the right spot as you suggested :clap

but I must have done something wrong when refreshing so I restarted gimp, now works thankyou

Graechan · **Posted:** Thu Dec 15, 2011 8:33 pm **(#11)**

Here is the best location Kevin and I found for "error message" "gimp-message" would not function, and becouse error stops the script it should not be inside any tasks such as the undo section, best used at start or finish of script, or maybe by closing undo first.

Code: Select all

(let* (
            (image-layer (car (gimp-image-get-active-layer image)))
         (width (car (gimp-image-width image)))
         (height (car (gimp-image-height image)))
         (zoom-layer 0)         
        )
   (if (= (car (gimp-selection-is-empty image)) TRUE) (error "No Selection Found"))
   
   (gimp-context-push)
        (gimp-image-undo-group-start image)
   (gimp-context-set-foreground '(0 0 0))
   (gimp-context-set-background '(255 255 255))
   
   
   (if (= (car (gimp-selection-is-empty image)) FALSE)
   (begin
   (gimp-edit-copy image-layer)
   (gimp-edit-paste image-layer TRUE)
   (set! zoom-layer (car (gimp-image-get-floating-sel image)))    
   (gimp-floating-sel-to-layer zoom-layer)
   (gimp-drawable-set-name zoom-layer "Zoom")
   
   )
   )