I need a simple and successful example of c4d.gui.SplineCustomGui which has same params as the picture below.

I have tried directly code below. But it can not have the full control of c4d.gui.SplineCustomGui by bc[c4d.constant], and it is without the gui elements, such as "Point X", "Point Y" and so on.
class Dialog(c4d.gui.GeDialog):

def __init__(self):

    compoId = 1000
    i = 1

    compoId += i
    self.groId_0 = compoId

    compoId += i
    self.spliId_0 = compoId

def CreateLayout(self):
    bc = c4d.BaseContainer()  
    # bc[c4d.SPLINECONTROL_GRID_H] = True
    # bc[c4d.SPLINECONTROL_GRID_V] = True
    # bc[c4d.SPLINECONTROL_VALUE_LABELS_H_LEGACY] = True
    # bc[c4d.SPLINECONTROL_VALUE_LABELS_V_LEGACY] = True
    bc[c4d.SPLINECONTROL_X_MIN] = 0
    bc[c4d.SPLINECONTROL_X_MAX] = 1
    # bc[c4d.SPLINECONTROL_X_STEPS] = 0.1
    bc[c4d.SPLINECONTROL_Y_MIN] = 0
    bc[c4d.SPLINECONTROL_Y_MAX] = 1
    # bc[c4d.SPLINECONTROL_Y_STEPS] = 0.1
    # bc[c4d.SPLINECONTROL_PRESET_BTN_LEGACY] = True
    # bc[c4d.SPLINECONTROL_ROUND_SLIDER_LEGACY] = True
    # bc[c4d.SPLINECONTROL_GRIDLINES_H_LEGACY] = 10
    # bc[c4d.SPLINECONTROL_GRIDLINES_V_LEGACY] = 10
    # bc[c4d.SPLINECONTROL_MINSIZE_H] = 0.1
    # bc[c4d.SPLINECONTROL_MINSIZE_V] = 0.1
    # bc[c4d.SPLINECONTROL_X_MIN_TEXT_LEGACY] = "True"
    # bc[c4d.SPLINECONTROL_X_MAX_TEXT_LEGACY] = "True"
    # bc[c4d.SPLINECONTROL_Y_MIN_TEXT_LEGACY] = "True"
    # bc[c4d.SPLINECONTROL_Y_MAX_TEXT_LEGACY] = "True"
    # bc[c4d.SPLINECONTROL_X_TEXT] = "Density"
    # bc[c4d.SPLINECONTROL_Y_TEXT] = "Vertex Weight"
    # bc[c4d.SPLINECONTROL_NEW_NO_HORIZ_LEGACY] = False
    # bc[c4d.SPLINECONTROL_NEW_NO_VERT_LEGACY] = False
    # bc[c4d.SPLINECONTROL_HIDE_GRID_H_LEGACY] = False
    # bc[c4d.SPLINECONTROL_HIDE_GRID_V_LEGACY] = False
    # bc[c4d.SPLINECONTROL_HIDE_PRESET_BTN_LEGACY] = False
    # bc[c4d.SPLINECONTROL_HIDE_ROUND_SLIDER_LEGACY] = False
    # bc[c4d.SPLINECONTROL_HIDE_VALUE_EDIT_H_LEGACY] = False
    # bc[c4d.SPLINECONTROL_HIDE_VALUE_EDIT_V_LEGACY] = False
    # bc[c4d.SPLINECONTROL_HIDE_VALUE_LABELS_H_LEGACY] = False
    # bc[c4d.SPLINECONTROL_HIDE_VALUE_LABELS_V_LEGACY] = False
    # bc[c4d.SPLINECONTROL_ALLOW_HORIZ_SCALE_MOVE] = True
    # bc[c4d.SPLINECONTROL_ALLOW_VERT_SCALE_MOVE] = True
    # bc[c4d.SPLINECONTROL_OPTIMAL] = True
    # bc[c4d.SPLINECONTROL_OPTIMAL_X_MIN] = 0.01
    # bc[c4d.SPLINECONTROL_OPTIMAL_Y_MIN] = 0.01
    # bc[c4d.SPLINECONTROL_OPTIMAL_X_MAX] = 0.01
    # bc[c4d.SPLINECONTROL_OPTIMAL_Y_MAX] = 0.01
    # bc[c4d.SPLINECONTROL_SQUARE] = False
    # bc[c4d.SPLINECONTROL_CUSTOMCOLOR_SET] = True
    # bc[c4d.SPLINECONTROL_CUSTOMCOLOR_COL] = c4d.Vector(1,1,1)
    bc[c4d.SPLINECONTROL_NO_FLOATING_WINDOW] = True
    # bc[c4d.SPLINECONTROL_NO_PRESETS] = False

    self.spli = self.AddCustomGui(self.spliId_0, c4d.CUSTOMGUI_SPLINE, "", c4d.BFH_SCALEFIT|c4d.BFV_SCALEFIT, 0, 0, bc)

    return True

The second way with description files, I also have tried
https://developers.maxon.net/forum/topic/13499/splinecustomgui-settings-issue/10?_=1653814204664.
But I failed.
If it can have all params like the picture in the second way, I want a successful and simple example including its description files(.res and .h).

Great!!! It runs.
You are right. Thank you so much!
I think your answer is worth being written in the API document to make the workflow more clear.

@kbar
I am interested in c4d (also cg) plugin development.
But your requirements are a little bit high for me, especially "Strong proficiency in C++ programming language".
I can use c++ for programming but not strongly. But I can also make a c++ plugin like this:

A part of my code:

Is there any way to stop MMB wheel to zoom the camera then get MMB wheel scrolling in viewport in Description Tool?
I need to scroll the MMB wheel in the viewport to change my tool's params?
For example, shift + scroll MMB wheel to increase the value.

I know how to get MMB wheel scrolling in GeDialog like in asynctest.cpp. But MMB wheel scrolling can not got in MouseInput() in tools (ToolData, DescriptionToolData).

I wanna dynamically control the "STEP"of a "REAl" description
parameter for my tool in c++.
But it is not as easy as the GeDialog in python.

@ferdinand
That is great! Thanks!

In python, I can op.GetChildren() easily.
But in c++, GetChildren() is under the
MAXON_METHOD.
Because I'm the new to c++, I can not understand the such complex grammar and the usage of this function in c++.
.
Please tell me how to get children of an object by using this function in c++.

How to press the "Apply" button in the DescriptionToolData?
For c++ and python.

For python:

import c4d

def main() -> None:

    c4d.CallCommand(450000263) # C++ SDK - Pick Object Tool

    tool = c4d.plugins.FindPlugin(450000263, c4d.PLUGINTYPE_TOOL)
    tool[c4d.MDATA_INTERACTIVE] = True
    c4d.EventAdd()
    if tool is not None:
        c4d.CallButton(tool, c4d.MDATA_APPLY)
        c4d.CallButton(tool, c4d.MDATA_NEWTRANSFORM)
        c4d.EventAdd()

    print("execute")

if __name__ == '__main__':
    main()

The python code can excute the settings of the tool. But the "Apply" button isn't pressed and disenabled like the manual pressing action to get the realtime update.

Thanks, @i_mazlov.
I know what you say. But that is not my question.
I don't make the selection tool but the tools maybe like modeling tools.

PLUGINFLAG_TOOL_EVALUATEHANDLES means that I can see and drag the handles of the coordinate system.

PLUGINFLAG_TOOL_SINGLECLICK means that I can select the components (points, edges or polygons) of the object or the object itself.

PLUGINFLAG_TOOL_HIGHLIGHT means that I can highlight the components before I select them to perform a pre-select operation.

PLUGINFLAG_TOOL_SNAPSETTINGS means that I can run the tool with snapping operations.

But I don't know the performance of PLUGINFLAG_TOOL_DRAW_MULTIPLANE, PLUGINFLAG_TOOL_EDITSTATES, PLUGINFLAG_TOOL_SWITCHACTION and PLUGINFLAG_TOOL_NO_TOPOLOGY_EDIT.

But I also want to know the difference between PLUGINFLAG_TOOL_TWEAK and PLUGINFLAG_TOOL_TWEAK_NO_HIGHLIGHT.

You know,
before we use move tool to move sometings, we select them first by using the move tool itself.
before we use modeling tool to make a modeling operation, we select the components by using the modeling tool itself.
That are selection operations of them.
I want to simulate the selection operations like them.

Which are tool plugin flags abount Brush Selection tool, even Move tool?
I simulate the selection actions about Selection tool, even Move tool in my tool plugins. I want to get clear tool plugin flags about them.

Thanks! Sorry, I am so careless that I ignore the message "Needs to be called before the change.".

UNDOTYPE_CHANGE:

Any change to an object, including hierarchy modifications; modification in positioning (object has been moved from A to B), substructures etc. (Needs to be called before the change.)