ImGui in AutoIt - Advanced UI

[thedemons]

Introduction

• ImGui is a popular library written by ocornut, it can make awesome user interface based on directx.
• It is being used by many big apps/games. 
• The UI is nice and flexible, easy to use because of frame-by-frame drawing.

So I decided to convert the entire ImGui library to AutoIt

• At first it's just an experiment, i converted some basic draw functions of imgui, compile to a dll, then using DllCall in autoit to call the functions.
• I was testing to see how much FPS i can get in autoit, and i was expected a low FPS, since autoit is slow.
• Suprisingly, the FPS turned out to be so high, it works really fast, even when drawing 1000 buttons at the same time.

Features

• More than +270 functions converted from ImGui (compiled dll).
• Has 90% of the capability of what you can do in C++;
• Usable ImGuiIO and ImGuiStyle, so you can set whatever configurations you like.

Preview

    

Usage

#include <WinAPI.au3>
#include "ImGui.au3"

; Create a window
Local $hwnd = _ImGui_GUICreate("AutoIt ImGui", 1024, 768)
_WinAPI_ShowWindow($hwnd)

; Set style color
_ImGui_StyleColorsLight()
;~ _ImGui_StyleColorsDark()

Local $f_value = 5
While 1

    ; when the user click close button on the window, this will return false
    if Not _ImGui_PeekMsg() Then Exit

    ; must call
    _ImGui_BeginFrame()

    _ImGui_Begin("Another window")
  
    _ImGui_Text("Hello there..")
  
    If _ImGui_Button("click me") Then $f_value = 5
  
    _ImGui_SliderFloat("slider", $f_value, 2, 20)
    If _ImGui_IsItemHovered() Then _ImGui_ToolTip("what r u doing?")
  
    _ImGui_End()
  
    ; must call
    _ImGui_EndFrame()
Wend

 

Remark

• Most of the functions were converted automatically. I haven't tested all of them yet, if some function doesn't work for you, please tell me.
• Still missing some features of ImGui, please tell me if you needed any.
• Run \tools\imgui-au3-setup.au3 to add _ImGui functions to SciTE auto-complete.

Source Code

• Require: DirectX
• GitHub: imgui-autoit

Edited July 9, 2020 by thedemons

[ptrex]

I tried it on a x64 Win 10... But there is an error 

Cannot load imgui.dll Please update to the latest version of DirectX

Event though I have DirectX v12 installed.

 

[careca]

I get the same, screenshots look great though.

[thedemons]

Please replace the imgui.dll with the one in dll_64, or #AutoIt3Wrapper_UseX64=N to use x86

Edited July 8, 2020 by thedemons

[nend]

Just test it but I also get the same error as above.
I tried the step you discribe above but still it doesn't work.
On Windows 10 64 bit.

Edited July 8, 2020 by nend

[dmob]

Same problem in Win 10 x86.

[argumentum]

Tested it. Win 10 x64. No problems. Run in x86 and x64.

Q: What is the use of "FileInstall("imgui.dll", $__imgui_dllpath)". Why not just run from local folder.
 

;~ Local $__imgui_dllpath = @TempDir & "\temp-data-" & TimerInit() & ".tmp", $__imgui_created = False
;~ If Not FileInstall("imgui.dll", $__imgui_dllpath) Then
;~  MsgBox(16, "Error", "Cannot find imgui.dll")
;~  Exit
;~ EndIf

Global $__imgui_created = False
Global $__imgui_dllpath = @ScriptDir & "\imgui.dll"
If @AutoItX64 Then $__imgui_dllpath = @ScriptDir & "\dll_64\imgui.dll"

Global $IMGUI_DLL = DllOpen($__imgui_dllpath)

If $IMGUI_DLL = -1 Then
    MsgBox(16, "Error", "Cannot load imgui.dll" & @CRLF & "Please update to the latest version of DirectX")
    Exit
EndIf

OnAutoItExitRegister(Shutdown_)
Func Shutdown_()
    If $__imgui_created Then _ImGui_ShutDown()
    DllClose($IMGUI_DLL)
;~  FileDelete($__imgui_dllpath)
EndFunc
... ...

Q: How can the _ImGui_GUICreate() be dock to the main GUI ?

Edited July 8, 2020 by argumentum

[thedemons]

The main GUI is created by _ImGui_GuiCreate, did you mean how to dock a window created with _ImGui_Begin to the main GUI like this video below?

Spoiler

 

 

 

 

 

[argumentum]

yes, that dock but of the main gui

[thedemons]

Please be more clear, dock what to what? Also, this is a problem of imgui, so you can just google with "imgui c++ dock....".

Edited July 8, 2020 by thedemons

[argumentum]

In the demo you've posted, the main gui, is not docked, nor dock-able. My question is if the docker can be planted first and the the main gui be docked in the docker.
And, thanks for sharing, this was a lot of work.

[thedemons]

This is an example docking space, please call MainDockSpace() after _ImGui_BeginFrame(), and remember to _ImGui_EnableDocking() first.

Func MainDockSpace($transparent_bg = True)

    Local $io = _ImGui_GetIO()
    if BitAND($io.ConfigFlags, $ImGuiConfigFlags_DockingEnable) = False Then Return False

    Local $opt_fullscreen_persistant = true
    Local $opt_fullscreen = $opt_fullscreen_persistant
    Local $dockspace_flags = $transparent_bg ? $ImGuiDockNodeFlags_PassthruCentralNode : $ImGuiDockNodeFlags_None

    Local $window_flags = $ImGuiWindowFlags_NoDocking

    $viewport = _ImGui_GetMainViewport()
    _ImGui_SetNextWindowPos($viewport.Pos_x, $viewport.Pos_y)
    _ImGui_SetNextWindowSize($viewport.Size_x, $viewport.Size_y)
    _ImGui_SetNextWindowViewport($viewport.ID)
    _ImGui_PushStyleVar($ImGuiStyleVar_WindowRounding, 0)
    _ImGui_PushStyleVar($ImGuiStyleVar_WindowBorderSize, 0)
    $window_flags = BitOR($window_flags, $ImGuiWindowFlags_NoTitleBar, $ImGuiWindowFlags_NoCollapse, $ImGuiWindowFlags_NoResize, $ImGuiWindowFlags_NoMove)
    $window_flags = BitOR($window_flags, $ImGuiWindowFlags_NoBringToFrontOnFocus, $ImGuiWindowFlags_NoNavFocus)

    if BitAND($dockspace_flags, $ImGuiDockNodeFlags_PassthruCentralNode) Then $window_flags = BitOR($window_flags, $ImGuiWindowFlags_NoBackground)

    _ImGui_PushStyleVarPos($ImGuiStyleVar_WindowPadding, 0, 0)
    _ImGui_Begin("main_dockspace", False, $window_flags)
    _ImGui_PopStyleVar()

    if ($opt_fullscreen) Then _ImGui_PopStyleVar(2)

    $dockspace_id = _ImGui_GetID("MyDockSpace")
    _ImGui_DockSpace($dockspace_id, 0, 0, $dockspace_flags)

    _ImGui_End()
EndFunc

 

[ptrex]

Still no success, even with argumentum script version ... 

Still the same error message PLEASE INSTALL THE LATEST VERSION of DIRECTX ?

For Win10 x64 this is already installed on my machine.

Even if the script run in x86 or x64, same error ...?

[thedemons]

That is because the dll can't be load. please try to update your Visual C++

Edit: I have updated the new dll built with a lower version of windows SDK, maybe my version of SDK was too high.

Edited July 9, 2020 by thedemons

[argumentum]

..tell you what. Did the update on a machine that did not run in but did not help ( purple screen ).
The PC that did run is an older version of Win10 ( brown screen ) 
can the DLL be compiled without dependencies ? 

Edited February 10, 2024 by argumentum
replaced image provider (need the space)

[argumentum]

22 minutes ago, thedemons said:

Edit: I have updated the new dll built with a lower version of windows SDK, maybe my version of SDK was too high.

Those new DLLs did not fix the issue.  

[thedemons]

The dll is using directx 11 which is prettey much installed on every machine, i think the problem is the windows SDK i used to build the dll.
I have updated a new version of the dll, can you try again?

 

[argumentum]

...that was fast !. ... give me 1 minute...

[thedemons]

I don't know why is the dll can't be loaded on your pc, i've installed a new windows in vmware, and just need to install DirectX to get it working.

[ptrex]

You can check your DirectX version running this tool : dxdiag.exe

On Windows 10 x64 using latest updates it will be Directx v12