[Closed] Is there any way to get progressbar text while rendering?

you could start a timer before the render start and then simply find pb control among statuspanel child controls to parse the data

(
local g = (dotNetClass "Autodesk.Max.GlobalInterface").Instance	
local candidates = for c in windows.getChildrenHWND g.CoreInterface7.StatusPanelHWnd where matchPattern c[5] pattern:"*%" collect c[1]
-- find exact control and parse the data out
)

not sure if it will work for modern qt gui, don’t have vray installed to check

Thank you, SEREJAH, I tried your script but the result did’t cantain that process bar. I print all these c[5] text as follows:

[]
[]
[]
[Add Time Tag]
[]
[]
[]
[]
[[-381.575,-47.5095,118]]
[$Object001.name = “243_WallHoleFrame_section_2”]
[StatusPanelSepWindow]
[StatusPanelTopToolbar]
[]
[1 Object Selected]
[]
[]
[]
[]
[]
[]
[]
[X:]
[]
[]
[-243.593cm]
[]
[]
[Y:]
[]
[]
[541.378cm]
[]
[]
[Z:]
[]
[]
[0.0cm]
[]
[]
[Grid = 10.0cm]
[StatusPanelBottomContainer]
[]

I guess maybe the StatusPanelBottomContainer object has some property that contains the number I want?
By the way, I googled these property names and it’s really hard to find docs that helped, is there any official docs I can refer to?

Here’s a quick dirty test code, see if it works

is_rendering = true

bw = dotNetObject "CSharpUtilities.SynchronizingBackgroundWorker"

fn printpb = 
(
    -- ideally you need to find this progress bar handle just once on render start and use it until the end
	local  candidates = for w in windows.getChildrenHWND #max where w[4] == "msctls_progress32" collect w[1]

	if candidates.count > 0 do 
	(
		local WM_USER    = 1024
		local PBM_GETPOS = WM_USER + 8
		
		format ">> %\n" (windows.sendmessage candidates[1] PBM_GETPOS 0 0)
	)
)


fn dowork =
(
	format "Background worker started\n" 

	local delay = 0.5 -- half sec
		
	while is_rendering do
	(
		printpb()
		
		sleep delay
	)
	
	format "Background worker completed\n" 
	
)

dotnet.addEventHandler bw "DoWork" dowork
::bw.runWorkerAsync()

render camera:$Camera001 vfb:off width:500 height:500 progressbar:true cancelled:&cancelled

is_rendering = false

upd
actually there’s a way to know whether the render is active

(dotNetClass "Autodesk.Max.GlobalInterface").Instance.CoreInterface7.IsRenderActive

Thanks, your script worked perfectly!!!

I learned that the your script invokes system call to gain direct access to msctls_progress32 (or process bar).
since it takes several steps to finish rendering(start GPU/compile/Build cache/Rendering etc), I want tag these numbers with certain stages, like:

start GPU 40%
compile 10%
Build cache 90%
Rendering 10%

But process bar itself doesn’t have properties like “message” or “text”(the properties start with PBM_ is all about the bar position or its bar color), how could I get the text on the left?

These labels must be separate controls just like any other mxs label, but I couldn’t find any neighboring labels when the progress bar appears. Moreover not a single control in max receives WM_SETTEXT message in the process of rendering so I assume there’re no labels and this text is printed directly onto the pb parent control.
Try asking here: https://forums.autodesk.com/t5/3ds-max-programming/bd-p/area-b35

Got it, thanks a lot and have a good day