topic 回复： trackview opacity in 3ds Max Programming Forum

trackview opacity

yun7928903 — Sat, 14 Aug 2021 07:32:47 GMT

Is there any way to make the trackview transparent like when we try to dock it?

回复： trackview opacity

yun7928903 — Tue, 17 Aug 2021 09:04:42 GMT

in the lower version of max, I can use:

HiddenDOSCommand ("python G:\\trackviewAlpha.py") donotwait:true startpath:"c:\\"

to run a py:

import win32gui
import win32con
import winxpgui
import win32api
import subprocess
import time

hwnd = win32gui.FindWindow(None, "cometTrackview") ## name
win32gui.SetWindowLong (hwnd, win32con.GWL_EXSTYLE, win32gui.GetWindowLong (hwnd, win32con.GWL_EXSTYLE ) | win32con.WS_EX_LAYERED )
winxpgui.SetLayeredWindowAttributes(hwnd, win32api.RGB(0,0,0), 180, win32con.LWA_ALPHA)

to get the transparent track view. But in 2018 there seems to have been a callback. will make the track view not transparent again..ORZ
if I write another callback against the system callback seems too silly...

and it's very slow (=′ー`)

回复： trackview opacity

denisT.MaxDoctor — Tue, 17 Aug 2021 18:19:48 GMT

fn CreateUser32AssistAssembly = ( source = "using System;\n" source += "using System.Runtime.InteropServices;\n" source += "class Wind32Assists\n" source += "{\n" source += " [DllImport(\"user32.dll\", EntryPoint=\"UpdateWindow\")]\n" source += " public static extern bool UpdateWindow(IntPtr hWnd);\n" source += " [DllImport(\"user32.dll\", EntryPoint=\"GetWindowLong\")]\n" source += " public static extern Int32 GetWindowLong(IntPtr hWnd, Int32 index);\n" source += " [DllImport(\"user32.dll\", EntryPoint=\"SetWindowLong\")]\n" source += " public static extern Int32 SetWindowLong(IntPtr hWnd, Int32 index, Int32 newVal);\n" source += " [DllImport(\"user32.dll\")]\n" source += " public static extern bool SetLayeredWindowAttributes(IntPtr hwnd, uint crKey, byte bAlpha, uint dwFlags);\n" source += "}\n" csharpProvider = dotnetobject "Microsoft.CSharp.CSharpCodeProvider" compilerParams = dotnetobject "System.CodeDom.Compiler.CompilerParameters" compilerParams.GenerateInMemory = on compilerResults = csharpProvider.CompileAssemblyFromSource compilerParams #(source) assembly = compilerResults.CompiledAssembly assembly.CreateInstance "Wind32Assists" ) global Wind32Ass = CreateUser32AssistAssembly() fn setWindowSemitransparent hwnd alpha = ( WS_EX_LAYERED = 0x00080000 GWL_EXSTYLE = (-20) LWA_ALPHA = 0x00000002 style = Wind32Ass.GetWindowLong hwnd GWL_EXSTYLE Wind32Ass.SetWindowLong hwnd GWL_EXSTYLE (bit.or style WS_EX_LAYERED) Wind32Ass.SetLayeredWindowAttributes hwnd 0 (alpha*255) LWA_ALPHA ) fn setWindowOpaque hwnd = ( WS_EX_LAYERED = 0x00080000 GWL_EXSTYLE = (-20) LWA_ALPHA = 0x00000002 Wind32Ass.SetLayeredWindowAttributes hwnd 0 255 LWA_ALPHA style = Wind32Ass.GetWindowLong hwnd GWL_EXSTYLE Wind32Ass.SetWindowLong hwnd GWL_EXSTYLE (bit.and style (bit.not WS_EX_LAYERED)) Wind32Ass.UpdateWindow hwnd ) fn findTrackViewHwnd pattern:"*" = ( hwnd = for k=1 to trackView.numTrackViews() do ( name = trackView.getTrackViewName k if matchpattern name pattern:pattern do ( hwnd = (trackviews.getTrackView k).ui.hwnd exit with hwnd ) ) if hwnd == OK then 0 else hwnd ) ------- USING ----------------> my_trackview_name = "Track View*" -- name or wildcard hwnd = findTrackViewHwnd pattern:my_trackview_name setWindowSemitransparent hwnd 0.5 -- set half-transparent (aplha == 0.5) setWindowOpaque hwnd -- set opaque (aplha == 1)

回复： trackview opacity

yun7928903 — Wed, 18 Aug 2021 01:08:42 GMT

wow~nice.it's much faster when work with the callback.TKS

-- 实时透明化
fn trackviewAlpha_yun =
( setWindowSemitransparent hwnd 0.5 )
try(unRegisterRedrawViewsCallback trackviewAlpha_yun)catch()
registerRedrawViewsCallback trackviewAlpha_yun