Old 05-21-2019, 06:32 AM   #481
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Quote:
Originally Posted by woodslanding View Post
Wow, this is just rockin along!!

question: I want to create a bunch of similar items that each address a different track... I can create unique names for them by concatenating a string, but then I don't know how to access them.
- Accessing array elements with variables is just a matter of using []s and concatenating a string the same way.

- You can use self inside any method that will be called with the : syntax.

Code:
for i = 0, 10 do
  local ctl = GUI.elms["ns_ctl"..i]
  ctl.onmouseup = function(self)
    setNoteSource(self.trk, self:val())
    GUI.IControl.onmouseup(self)
  end
end
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Old 05-21-2019, 09:39 AM   #482
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dang, that is pretty code. Lua is so cool!
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Old 05-22-2019, 09:03 PM   #483
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Okay, continuing onward...

How would I do meters?

I'd also like to control elements from midi... is there a way to do that? I considered having dummy values in a jsfx, but I still need to figure out how to read them

I assume the gui framework has a clock somewhere to poll the mouse and keyboard, correct? Maybe it could poll midi and output levels at the same time?


Okay, right after writing this I stumbled into onupdate(). I tried this for meters:
Code:
ctl:onupdate(ctl:val(reaper.Track_GetPeakInfo(track,1)))
not doing anything yet...

another try, seems closer:
Code:
ctl.onupdate = function(self)  self:val(getMeter(track,1)) end  --getMeter calls getPeakInfo
oh my, this IS working :0
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Last edited by woodslanding; 05-22-2019 at 10:13 PM.
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Old 05-23-2019, 05:58 AM   #484
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There's also an equivalent global hook if that helps at all:
Code:
GUI.func = myFunction
GUI.freq = 0 -- every loop
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Old 05-23-2019, 01:43 PM   #485
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Default Freeze Element?

I'm reading through the default methods of core.lua, and I found this:

Code:
-- Called on every update loop, unless the element is hidden or frozen
function GUI.Element:onupdate() end
How do you freeze an element? I did a search on freeze and frozen in core, and found nothing.... would be useful to do to save cpu, I assume.
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Old 05-23-2019, 01:51 PM   #486
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I don't remember if I've actually tested it, but:
Code:
GUI.elms_freeze[elm.z] = true
Frozen layers should continue to draw their last visual state, but shouldn't do any processing for onupdate or input methods. ...I think.

https://github.com/jalovatt/Lokasenn.../4.02-Z-layers
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Old 05-24-2019, 10:21 PM   #487
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Thanks!

I realized I don't really have a use-case for this, though, because I often like to set up tracks while they are disabled... so I guess I always want the gui elements responsive. Although I will keep this in mind. It might come up again.

But in a slightly related question.... I'd like some of the gui to update precisely (like the metronome display) but other things could be comparatively more lazy. Wondering how you might go about setting up a slower update rate for certain controls, to save cpu....
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Old 05-25-2019, 06:27 AM   #488
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- Put the lazy elements on separate layers. As long as nothing on a given layer needs to be redrawn, the entire layer will just keep blitting the same image when the GUI redraws everything.

- Add some logic to the lazy elements' onupdate, or whatever you're using to update them, so that it doesn't do the work on every loop:
Code:
local updateFrequency = 10 -- 10 script cycles
lazyElement.updateCount = 0

function lazyElement:onupdate()
  self.updateCount = (self.updateCount + 1) % updateFrequency
  if self.updateCount == 0 then
    updateStuff()
  end
end
If the lazy elements are all updating at the same time, it would be more efficient to use GUI.func:
Code:
GUI.func = updateAllTheLazyStuff
GUI.freq = 0.1 -- seconds
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Old 05-25-2019, 10:02 AM   #489
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Quote:
Originally Posted by Lokasenna View Post


There's also an equivalent global hook if that helps at all:
Code:
GUI.func = myFunction
GUI.freq = 0 -- every loop
Is it possible to change the frequency on functions? Like, run a function once every 100 loops to check for a file?
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Old 05-25-2019, 10:10 AM   #490
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GUI.freq is in seconds, so you can give it 0.2 or something. For an exact number of loops you would have to manage a counter yourself:
Code:
local updateCounter = 0
local updateFrequency = 100
GUI.func = function()
  if (updateCounter == 0) then
    updateTheThings()
  end

  -- Increments the counter, but wraps it to 0 when it hits 100
  updateCounter = (updateCounter + 1) % updateFrequency
end
GUI.freq = 0
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Old 05-25-2019, 04:50 PM   #491
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Alrighty folks, I think I've procrastinated on this about as much as I can.

Version 3 of the GUI is now ready to accept contributions from Viewers Like You: https://github.com/jalovatt/scythe

Notable changes thus far:
- The project has been renamed "Scythe" because lol Reaper puns.
- The GUI has been ripped apart and restructured into a bunch of smaller modules.
- The {type = "Button", x = 48, caption = "Hi!"} syntax for creating elements is now the ONLY way to create elements because it makes life way, way easier.
- Elements, layers, and windows (well, only one window for the moment) are handled in a much more object-oriented way. If you've ever worked with HTML objects in Javascript, it should look familiar - see the example scripts in the repo.
- There are now a bunch of public modules, separate from the GUI, providing things like extra table functions, text processing, etc.

I have a very long list of features to include in 3.0, and even more that would be nice to have, so I'm open to as much assistance as you can give me. Have a look and see if anything catches your eye.

Thanks.
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Old 05-25-2019, 11:14 PM   #492
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Is it possible to use your library as a GUI frontend for Control Surface plugin (C++ DLL)?
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Old 05-26-2019, 07:18 AM   #493
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Not directly - ReaScripts don't have any access to .dlls. If the library is specific to Reaper it could be written to expose some functions for a script to use.
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Old 05-30-2019, 07:21 PM   #494
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I am checking out the V3. One quick question:

Is there a way to get better code completion in vs code? Especially functions in classes that are not in the file, but added via require or other methods.

I've avoided splitting my code into multiple files for just that reason, and I'm wondering if you've found a workaround, now that the core has been split up....

I do have a working image widget class. When it's a little more polished, I'll send it to you. I think some of it might be useful.
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Old 05-30-2019, 07:48 PM   #495
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Reading function names from other files is something the language server/extension for VS Code has to do, and I have yet to find one for Lua that does it.

When v3 is ready to go I'd definitely like to add a set of autocomplete snippets to the existing pack here: https://forum.cockos.com/showthread.php?t=208769 , but until then you're out of luck. Keeping modules small does help with remember what functions they expose though.
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Old 05-30-2019, 09:10 PM   #496
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I was afraid of that.

until then, I'm afraid Lua is only 1.75 tons of fun.
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Old 05-31-2019, 08:07 AM   #497
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Quote:
Originally Posted by Lokasenna View Post
- Put the lazy elements on separate layers. As long as nothing on a given layer needs to be redrawn, the entire layer will just keep blitting the same image when the GUI redraws everything.

The thing is if I am needlessly checking values from Reaper on every update, that's going to use a lot of cpu, quite independent of the task of drawing anything. I'll have maybe 300 elements in the gui, and they all need to stay in sync with Reaper, even if it's not that frequently.... I just don't want to peg the cpu by asking for all that data at once. So I've got to figure that out.

Quote:
If the lazy elements are all updating at the same time, it would be more efficient to use GUI.func:
Code:
GUI.func = updateAllTheLazyStuff
GUI.freq = 0.1 -- seconds
Basically every one of my components is going to need to poll reaper for changes, so I'd like to have a default implementation in the component. But I'm confused about where I'd put these, so that I'd have a good default behaviour (such as 'check 5x a second, offset by a random amount') and still be able to override it in individual components, such as my metronome display, which should update on every cycle.

thinking out loud here.... so I can have individual components set their GUI.func to 'getReaperVal(x)' and then have the image component class call GUI.func itself. And it could call it every "GUI.freq + (random %)"?

Well, no, because GUI.func is triggered at the discretion of the core function, right? So I need to implement similar functionality in my component that includes an offset?
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Old 05-31-2019, 09:26 AM   #498
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GUI.func is just a top-level thing. Components don't have any built-in frequency settings for onupdate, but you could keep them from all updating at the same time with something like:
Code:
-- When creating them, assign a random number from 0 to 99
myElement.updateIndex = Math.floor(Math.random() * 100)

function myElement:onupdate()
  if elementUpdateCounter == self.updateIndex then
    -- update stuff
  end
end

-- Increment a global counter
GUI.func = function()
  elementUpdateCounter = (elementUpdateCounter + 1) % 100
end
You might also look into Lua's "coroutines" - they're functions that you can effectively pause and come back to, which makes them great for saying "here's a giant pile of work, do a bit of it and then wait for the next script update to do a bit more". If your elements were named consistently but with increasing numbers, you could have a coroutine looping over all of them but only doing ten at a time, etc.
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Old 05-31-2019, 12:16 PM   #499
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yeah, okay that looks good.

I'm having a problem with self being nil the first time onupdate gets called.... but I see you have 'self' right there... hmmm.

Code:
function GUI.IControl:onupdate()
    self.updateCount = (self.updateCount + 1) % self.updateRate --line 142
    if self.updateCount == 0 then
Class - IControl.lua:142: attempt to index a nil value (local 'self')
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Old 05-31-2019, 02:03 PM   #500
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Is the function being called with a . instead of a : ? The : is what adds a hidden self parameter.
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Old 05-31-2019, 03:08 PM   #501
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right, exactly, thank you!

still trying to keep that all straight, but I did just reread that part of the Lua docs, for all the good it did!
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Old 05-31-2019, 08:29 PM   #502
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I have a partially transparent component, and I'd like to have a display-only indicator component visible through it.

I thought putting the display on z=2 and the transparent component on z=1 would work, but it seems like the z=2 component doesn't get displayed at all. Is there a way around this?
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Old 05-31-2019, 08:56 PM   #503
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It should be. Is the transparent element drawing any sort of a background (if you copied from something like Label, it might be).
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Old 05-31-2019, 09:23 PM   #504
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Doh!!!!

Okay, another question: as I recall, there is no way to get a window without a title bar, correct?

I'd love to go full screen, and use every pixel. Obviously I'd have to include my own close button
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Old 05-31-2019, 09:39 PM   #505
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Not really.

The JS extension adds a few neat window functions, and I think you can hack a "frameless" window by copying the screen content behind the window and then blitting it on top of the whole window and frame, but the .gif I saw was a bit jerky and it won't work on Linux at the moment.
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Old 06-21-2019, 12:49 AM   #506
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I'm trying to replace a Radio with a Menubox.
I don't know if I have to change the "optarray" to something else as it gets

Error: Class - Menubox.lua:141: bad argument #1 to 'floor' (number expected, got nil)


when I select a Radio it updates the buttons.

Code:
    --GUI.New("scale_choice",     "Radio",          4, 20, 100, 140, 330, "Select Scale", "Major,Minor,Harmonic Major,Harmonic Minor", "v", 4)
    
    GUI.New("scale_choice",   "Menubox",     4, 120, 100, 64, 20, "Select Scale", "Major,Minor,Harmonic Major,Harmonic Minor")
    
    scale = GUI.elms.scale_choice.optarray[ GUI.Val("scale_choice") ]

function GUI.elms.scale_choice:onmouseup()
    -- Run the original method
    GUI.Radio.onmouseup(self)

    -- And then your function
    update_chord_buttons() 
end

    scale_numbers = GUI.Val("scale_choice")
    scale_names = { [1] = "Major", [2] = "Minor", [3] = "Harmonic_Major", [4] = "Harmonic_Minor"}
    selected_scale = scale_names[scale_numbers]
I'm always trying to find this you should put it in you signature
https://github.com/jalovatt/Lokasenna_GUI/wiki




.
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Old 06-21-2019, 06:07 AM   #507
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Quote:
Originally Posted by MusoBob View Post
Code:
function GUI.elms.scale_choice:onmouseup()
    -- Run the original method
    GUI.Radio.onmouseup(self)

    -- And then your function
    update_chord_buttons() 
end
My first guess would be that it's having trouble because you're still calling GUI.Radio.onmouseup(self) instead of Menubox.

Failing that, I'd have to look at the script myself. Is it not printing out a full stack trace for you?

Quote:
I'm always trying to find this you should put it in you signature https://github.com/jalovatt/Lokasenna_GUI/wiki
Unfortunately there's a limit on signature length and I'm already up against it. There is a link to the repo in the OP of this thread through (under "Development").
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Old 06-21-2019, 01:05 PM   #508
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Perfect thanks !
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Old 06-30-2019, 07:30 PM   #509
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Default argument in control method override

I'm trying to create a matrix of buttons, and I'm trying to get each one to call a master method (called 'select') with its own index as an argument:

Code:
for i = 1,buttonCount

    --create button, etc

    ctl.onmouseup = function(self) select(i) GUI.IButton.onmouseup(self) end
and it doesn't seem to work. I feel like I don't quite understand what happens when you create this kind of function... does the value of 'i' not get stored with the function?
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Old 06-30-2019, 08:20 PM   #510
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Quote:
Originally Posted by woodslanding View Post
I'm trying to create a matrix of buttons, and I'm trying to get each one to call a master method (called 'select') with its own index as an argument:

Code:
for i = 1,buttonCount

    --create button, etc

    ctl.onmouseup = function(self) select(i) GUI.IButton.onmouseup(self) end
and it doesn't seem to work. I feel like I don't quite understand what happens when you create this kind of function... does the value of 'i' not get stored with the function?
I would actually expect it to store i there, since you're creating the function within i's scope. Try adding a GUI.Msg(i) in the function as well to see if it's being called and if it has i.

Regardless, there is a better way to do what you want - Buttons already have a hook for running a user function, and it specifically does take extra parameters.

Code:
ctl.func = select -- note: no ()s here
ctl.params = {i}
Everything in params is unpacked and passed as arguments to func.
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Old 06-30-2019, 08:47 PM   #511
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oh cool. I couldn't figure out how to give func arguments....
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Old 07-07-2019, 03:43 AM   #512
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As My coding skills have barely reached the "hello world " level , i hope to see this script going the plogue Bidule or CTRLR way where logic\code could be connected through visual elements too !!
regardless huge fan of your work , your radial menu

cheers
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Old 07-07-2019, 08:36 AM   #513
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Quote:
Originally Posted by zookthespook View Post
As My coding skills have barely reached the "hello world " level , i hope to see this script going the plogue Bidule or CTRLR way where logic\code could be connected through visual elements too !!
regardless huge fan of your work , your radial menu

cheers
zook
It's a nice idea, and it is on my list of things to look into when I have a chance. I've also thought about replicating Cubase's Project Logical Editor which would end up being fairly similar under the hood.

In the meantime, the current version of the library does have a visual editor for setting up a script GUI - after exporting it, you would just have to write the code to make the buttons and sliders actually do something in Reaper.
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Old 08-09-2019, 10:25 AM   #514
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Thanks for making this library Lokasenna, it is very helpful!

I know you are probably super busy working on 3.0, but I have a small bug to report for the current release version. If you start a middle drag inside an element, and then release the middle mouse button when your cursor is outside of the element, the script will crash with this error message:

Code:
Error: Core.lua:1037: attempt to index a nil value (field 'mmouse_down_elm')

Stack traceback:
	Core.lua:88: in metamethod '__index'
	Core.lua:1037: in field 'Update'
	Core.lua:435: in field 'Main_Update_Elms'
	Core.lua:302: in function <...am Scripts\Development\Lokasenna_GUI v2\Library\Core.lua:298>
		[C]: in function 'xpcall'
	Core.lua:298: in function <...am Scripts\Development\Lokasenna_GUI v2\Library\Core.lua:297>

Lokasenna_GUI:
	v2.16.6
Reaper:
	5.981+dev0807/x64
Platform:
	Win64
If you don't have the time to do an update, perhaps you could tell me how to modify the library to fix it? I had a look at the core library and I can't seem to hunt down why it's happening since I'm not too familiar with it.
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Old 08-09-2019, 11:11 AM   #515
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I'll have a look when I get home this evening. Should be a quick fix.

As for v3... it's coming along. I've done a lot, but I still have a number of pretty large issues to take care and I'm definitely getting a bit burnt out.
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Old 08-09-2019, 12:26 PM   #516
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I'll have a look when I get home this evening. Should be a quick fix.

As for v3... it's coming along. I've done a lot, but I still have a number of pretty large issues to take care and I'm definitely getting a bit burnt out.
Thanks so much! It also seems like GUI.Element: onm_drag() doesn't get called. Perhaps that's a result of this bug, not sure.

I will eagerly await the release of v3! I'd help if I could, but unfortunately my lua skills aren't nearly good enough for that yet.
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Old 08-09-2019, 01:00 PM   #517
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To be honest I don't know that I've ever tested the middle and right mouse events. :P Making a note to add a test script for input events in v3 now.
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Old 08-09-2019, 01:04 PM   #518
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To be honest I don't know that I've ever tested the middle and right mouse events. :P
I don't blame you, it's quite a large library so testing everything would be very time consuming.

I didn't notice this problem with right clicking/dragging.
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Old 08-10-2019, 08:03 AM   #519
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Found it, fix should be up on ReaPack in a few minutes.

To handle mouse events it has to keep track of the previous state for each button. I only had:
Code:
GUI.mouse.last_down = GUI.mouse.down
GUI.mouse.last_r_down = GUI.mouse.r_down
The middle button wasn't being tracked at all. Whoops.
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Old 08-10-2019, 08:48 AM   #520
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Quote:
Originally Posted by Lokasenna View Post
Found it, fix should be up on ReaPack in a few minutes.

To handle mouse events it has to keep track of the previous state for each button. I only had:
Code:
GUI.mouse.last_down = GUI.mouse.down
GUI.mouse.last_r_down = GUI.mouse.r_down
The middle button wasn't being tracked at all. Whoops.
Thanks a bunch! It all seems to work well so far!
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