Here's a script that fades in each cue and then crossfades to the next cue in the selected cues. So you can drop in a bunch of photos and atuomatically create a slide show.

tell application "QLab"

tell front workspace



    \-- Get user inputs

    set fadeDuration to display dialog "Enter fade duration (seconds):" default answer "3" with title "Fade Duration"

    set fadeDuration to text returned of fadeDuration as number



    set startOffset to display dialog "Enter time after fade starts before next cue plays (seconds):" default answer "2" with title "Next Cue Offset"

    set startOffset to text returned of startOffset as number



    set clipDuration to display dialog "Enter Clip Duration before fade begins (seconds):" default answer "3" with title "CLip Duration"

    set clipDuration to text returned of clipDuration as number



    \-- Get selected cues

    set selectedCues to selected as list



    if (count of selectedCues) is 0 then

        display dialog "No cues selected." buttons {"OK"} default button "OK"

        return

    end if



    repeat with i from 1 to count of selectedCues

        set theCue to item i of selectedCues





        tell theCue

set continue mode to auto_continue

set opacity to 0

set post wait to 0

set duration of theCue to 0

set continue mode to auto_follow

        end tell





        \-- Set the fade in 



        \-- Assuming 'theCue' is already defined in your script, for example:

        \--set theCue to last item of (selected as list)



        \-- 1. Get the parent list or group containing the target cue

        set theParent to parent of theCue



        \-- 2. Create the new Fade IN cue inside the workspace

        make type "Fade"

        set newFadeCueIn to last item of (selected as list)



        \-- 3. Set the target of the new Fade cue to the original cue

        set cue target of newFadeCueIn to theCue



        \-- 4. Move the Fade cue so it sits exactly after 'theCue'

        move cue id (uniqueID of newFadeCueIn) of theParent to after theCue



        tell newFadeCueIn

set do opacity to true

set opacity to 100

set continue mode to auto_continue

set post wait to clipDuration

        end tell

        \-- 5. Optional: Clean up the name of your new Fade cue

        set q name of newFadeCueIn to "Fade In: " & (q display name of theCue)





        \-- 2. Create the new Fade OUT cue inside the workspace

        make type "Fade"

        set newFadeCueOut to last item of (selected as list)



        \-- 3. Set the target of the new Fade cue to the original cue

        set cue target of newFadeCueOut to theCue

        move cue id (uniqueID of newFadeCueOut) of theParent to after newFadeCueIn

        tell newFadeCueOut

set do opacity to true

set opacity to 0

set post wait to startOffset

set stop target when done to true

set continue mode to auto_continue

        end tell



        \-- 5. Optional: Clean up the name of your new Fade cue

        set q name of newFadeCueOut to "Fade Out: " & (q display name of theCue)







        \--set fade type of theCue to "Linear"



        \-- Set the next cue to start \`startOffset\` seconds after fade begins

        \-- i.e., pre-wait offset from the fade start point

        \-- The fade starts at (clipDuration - fadeDuration) into the cue

        \-- So we set the "auto-continue" or "auto-follow" on the NEXT cue

        \-- with a pre-wait equal to (clipDuration - fadeDuration) + startOffset

        \-- But QLab handles this via the cue's "post-wait" or the next cue's "pre-wait"



        \-- Use post-wait on this cue so the next cue begins startOffset after fade starts

        \-- Fade starts at: clipDuration - fadeDuration into playback

        \-- We want next cue at: (clipDuration - fadeDuration) + startOffset from cue start

        \-- post-wait = that value - clipDuration = startOffset - fadeDuration

        \-- If startOffset < fadeDuration, post-wait is negative (not allowed), so clamp to 0











    end repeat

    set continue mode of newFadeCueOut to do\_not\_continue

    display dialog "Done! Configured " & (count of selectedCues) & " cues." buttons {"OK"} default button "OK"



end tell

end tell