@m_magalhaes Thank you

@mp5gosu Thank you solved my problem

@dada said in I want to use C + + to implement GUI. Messagedialog(‘no sel’) in Python I don't know how to start:

Cinema 4D Version: 21

User Information:
Cinema 4D Version: 12
Platform:
Language(s) : C++ ;

I want to use C + + to implement a small prompt box shown in the figure above
我的C++代码:

Bool DADA_ToolSet_Dialog::Command(Int32 id, const BaseContainer & msg)
{
    switch (id)
    {

	case(ID_DADA_Point_TO_Circle):
		{
			BaseDocument *doc = GetActiveDocument();
			BaseObject *obj1 = doc->GetActiveObject();
			String name = obj1->GetName();			
			if (obj1 == NULL)
			{
			    break;
             		}
                   }

    }

}

@m_magalhaes
I'll write it in your way

Thank you very much.

Cheers!

@m_magalhaes
非常感谢
我用另外一个办法解决了不用求矩阵
代码如下

PointObject *slpoint = ToPoint(obj1); //转换为点对象
		BaseSelect *pointsel = slpoint->GetPointS();//获取选择的点

		Int32 pointConst = slpoint->GetPointCount();//获取所有的点
		Vector *points = slpoint->GetPointW();//获取所有点的坐标
		Vector pt;
		Int32 i;
		for (i = 0; i < pointConst; i++)//利用for循环来不断读取所有点的数据
		{
			if (pointsel->IsSelected(i))//来判断当前的点是否选择住
			{
				pt += points[i];//若果选择 所有向量相加
			}
		}

User Information:
Cinema 4D Version: 21.115
Platform: Windows ;
Language(s) : C++ ;
I've converted objects to polygons，
And selected a point

And print out the serial number of these points

How can I get the coordinates of these points

Here's my code

BaseDocument*doc = GetActiveDocument();

BaseObject * obj1 = doc->GetActiveObject();

if (obj1->GetType()!= Opolygon)
		{
			break;
		}
PointObject *slpoint = ToPoint(obj1);
BaseSelect *pointsel = slpoint->GetPointS();
		
			

Int32 seg = 0, i, a, b;
while (pointsel->GetRange(seg++, LIMIT <Int32> ::MAX,&a,&b))
		{
			for ( i = a; i < b; i++)
			{
				
				ApplicationOutput("aa: @"_s, i);

			}

			
		}

@rsodre
I will already use python to create scripts and my own plugins
But I want to write my own script in C ++
Thank you for your reply

@s_bach Thank you in advance for your reply
I refer to what you said and went to the SDK documentation
I can't successfully create a cheapest plugin of my own
I want to ask
Are there any tutorials that are particularly suitable for newbies in C ++, I found links to some resources on this forum
But the tutorials that are clicked are older versions and are not applicable to c4dR21 and Visual Studio 2017
I hope there is a video tutorial that teaches me how to configure Visual Studio 2017 and successfully create the first plugin of my own
I can pay to buy this video tutorial
I would like to use what I learned to write my own C ++ plugin

I want to write the simplest plug-in in C + +

But I've already configured the SDK

I went through some tutorials and found that the vs version is updated a lot. I don't know how to configure it

I would like to ask vs2017 and R21 for a tutorial on writing the simplest plug-in

It's better to have a video tutorial so that I can understand my English faster. It's not very good