Anton thank you very much, your code worked very well when I entered it in SUEX_HelloWorld.cpp from the HelloWorld example of the repository, I just changed some names in the project to match everything and it worked perfectly 
.
Thanks a lot for the pdf Dan, it's very interesting.
I still have one question, how could I do this in the example called SUEX_UsingSWIG ?, I observed the Swig documentation and the pdf that shows Dan, but I could not see how this is done. Any idea?
Hi, I am creating my first c / c ++ ruby extension with the help of the examples found in: https://github.com/SketchUp/ruby-c-extension-examples
I have been able to modify these examples successfully. But now I want to pass an array of ruby to C ++ like the following:
[ [1, 2, 3], [2 ,3, 4], [4, 5, 6], ... ]
That correspond to the 3d coordinates of some points, and I want to bring back to ruby another similar array. For the moment I have only been successful with strings and with floats using the example of the repository called SUEX_UsingSWIG, but I do not know how it is done for arrays. Thank you in advance for your help.
(I use google translator, sorry for the mistakes in the translation)
Hello everyone
In time being I am doing some processing in batch in SU, what I want to know is if you can send an email from SU when the process is complete, you can do this? Thanks in advance for your comments
mistakes like this are appearing on the console
Error: #<NameError: uninitialized constant DM_SketchUV::DM_UVTool::Set>
I'm using Sketchup 2015. When you use version 1.0 works fine, but there are flaws in version 1.0.1
where you learn to do these wonderful things?
(google translator)
plans between Micrisoft and Trimble look really cool, I publish here because some developer interesting ideas can happen when he sees the plans that they exist for Sketchup.
http://www.engineering.com/DesignerEdge ... tchUp.aspx
(google translator)
Micrisoft plans between Trimble and look really cool, do not know if someone already publish the same in this forum
I just installed extesion and open sketchup, works great !!
these observers are perfectly suited to my need
Anton thank you very much, this is great, Christmas had never come so early for me, I am very happy. I am examining every part of this and I'm downloading "visual studio 2010," I'm trying to absorb all this.
Anton you're great, I will be attentive to what you show me to make a extension.
Anton thank you very much, I'll get to study this 
I want to keep as a surprise, When I finish you will understand why I needed this, however I will seriously Consider Your points.
it seems that is no longer available the info in this link
@unknownuser said:
We're sorry, the page you requested cannot be found.
you could give me another clue to study this?
Anton thank you very much for your explanation and links.
you have many observers available it is awesome, I have two versions of your library,1.0.9 and 2.2.0, I'm trying to understand how you manage to observe changes in the windows but I can not understand how you do, What is the basis of your observers? Is it a timer that question every so often? or does it work differently? Anton sorry for asking so much, It is that I am interested in the mechanisms behind the clock.
I want to keep as a surprise, when I finish you will understand why I needed this, however I will seriously consider your points.
I'm realizing I have to create a kind of observer of the size and position of the viewport, so that my webdialog is maintained in the corner when the user changes the size or position of the window Sketchup, for now the only option I see is do something with UI.start_timer and UI.stop_timer
It works perfectly, Anton am very grateful that you've taken the time to write this, it's very good.
I'm studying your code to see how does its magic, I have a question about owner = GetWindow.call (active, 4) I do not quite know who does this
Other than that, I only see a bug in the code, you wrote D ecastror instead of Dacastror
I'm kidding of course.
@unknownuser said:
meanwhile I will provide a Win32API reliant version, and then a C extension if decastror wishes
Build my first extension in C would be wonderful, it would be a good opportunity to dust off my little knowledge of C and most interestingly, could look to the development of faster plugins,
once, I tried perform the "hello world" with a guide published on GitHub, but I got lost on the way, I do not remember why, I would very much accomplish, Anton that would be awesome.
thank you very much for the advice Dan. I'll read about that library.
(translated with google translator)
wow! thank you very much Anton, get this Handle seems more sophisticated than I expected
I'm anxious to see how to do
Driven thanks, I'll look it looks interesting, I wonder if there will be a gem that allows some things like making Win32API so that they can perform on Mac
Anton would perform similar to yours definitions, but using Win32API
this is your original definition
def client_rect(hwnd, mode = 1)
return nil unless valid?(hwnd)
mode = mode.to_i
mode = 1 unless mode.between?(1,3)
lpRect = 0.chr*16
wins;;GetClientRect.call(hwnd, lpRect)
crect = lpRect.unpack('l*')
return crect if mode == 3
style = wins;;GetWindowLong.call(hwnd, -16)
exstyle = wins;;GetWindowLong.call(hwnd, -20)
wins;;AdjustWindowRectEx.call(lpRect, style, false, exstyle)
arect = lpRect.unpack('l*')
r = []
if mode == 1
wins;;GetWindowRect.call(hwnd, lpRect)
rect = lpRect.unpack('l*')
r[0] = rect[0] - arect[0]
r[1] = rect[1] - arect[1]
r[2] = r[0] + crect[2]
r[3] = r[1] + crect[3]
else
r[0] = -arect[0]
r[1] = -arect[1]
r[2] = r[0] + crect[2]
r[3] = r[1] + crect[3]
end
r
end
and this is what I try to do, I do not know if it is correct
require "Win32API"
GetClientRect = Win32API.new( 'user32.dll','GetClientRect', 'LP', 'B')
GetWindowLong = Win32API.new("user32.dll" , "GetWindowLong", "LI" , "L")
AdjustWindowRectEx = Win32API.new('user32.dll','AdjustWindowRectEx', 'PLBL', 'B')
GetWindowRect = Win32API.new('user32.dll','GetWindowRect', 'LP', 'B')
def client_rect(hwnd, mode = 1)
mode = mode.to_i
mode = 1 unless mode.between?(1,3)
lpRect = 0.chr*16
GetClientRect.call(hwnd, lpRect)
crect = lpRect.unpack('l*')
return crect if mode == 3
style = GetWindowLong.call(hwnd, -16)
exstyle = GetWindowLong.call(hwnd, -20)
AdjustWindowRectEx.call(lpRect, style, exstyle)
arect = lpRect.unpack('l*')
r = []
if mode == 1
GetWindowRect.call(hwnd, lpRect)
rect = lpRect.unpack('l*')
r[0] = rect[0] - arect[0]
r[1] = rect[1] - arect[1]
r[2] = r[0] + crect[2]
r[3] = r[1] + crect[3]
else
r[0] = -arect[0]
r[1] = -arect[1]
r[2] = r[0] + crect[2]
r[3] = r[1] + crect[3]
end
r
end
at this time I do not know how to get "hwnd" for sketchup window
(google translator)
thank you very much for your answers, I really want to do this, Driven interesting that behavior in Mac, I try to do something with it.
Anton thank you very much, I was just beginning to explore your code is really awesome 
, I can see that the coordinates of the viewport are obtained with this AMS::Sketchup::Viewport.rect returns an array like this [74, 120, 1678, 991] that corresponds to what I need . Although I feel like killing a fly using an atomic bomb, it would be excessive to require the complete library, I'm trying to study their code to accomplish what I need through Win32API, but it is proving difficult. Nevertheless, I can contemplate the beauty and power of your code
(google translator)
Hello everyone, I have a question related to the coordinates of the corners of the viewport relative to the screen, my goal is to create a webdialog and place it in one of these corners. I'm not sure how to get these coordinates, in advance thank you very much for your attention.
This picture illustrates what I want to get
(I used google translator, sorry for errors)
tip: never use global variables ($)
I think something like this is what you want
def overall_transformation(instance)
model = Sketchup.active_model
path = model.active_path ? model.active_path ; []
indi = path.index(instance)
if indi
return model.edit_transform if indi == path.size-1
tr = path[0].local_transformation
for i in 1..indi
tr = path[i].local_transformation * tr
end
else
tr = instance.transformation
while (instance.parent.class != Sketchup;;Model)
instance = instance.parent.instances[0]
tr = instance.transformation * tr
end
end
return tr
end
def find_instances
instancias = []; instancias.clear
mod = Sketchup.active_model
definitions = mod.definitions
for definition in definitions
instances = definition.instances
if instances.length > 0
entity = instances[0]
attr = entity.get_attribute "dic", "key"
instancias << entity if attr
end
end
return instancias
end
def make_instance(entities,transformation)
p1 = [0,0,0]; p2 = [50,50,50]
group = entities.add_group
group.entities.add_line p1, p2
group.transform! transformation
return group
end
def make_2_instances_nested_transformed
model = Sketchup.active_model
return "had been previously created" if find_instances.size>0
tr1 = Geom;;Transformation.translation [100,0,0]
tr2 = Geom;;Transformation.translation [0,100,0]
ents1 = model.entities
group1 = make_instance(ents1,tr1)
ents2 = group1.entities
group2 = make_instance(ents2,tr2)
group1.set_attribute "dic", "key", "info"
group2.set_attribute "dic", "key", "info"
"ok"
end
def find_instances_and_print_global_positions
instances = find_instances
group1 = instances[0]; group2 = instances[1]
origin1 = overall_transformation(group1).origin
origin2 = overall_transformation(group2).origin
puts "Group 1 global origin -> " + origin1.to_a.inspect
puts "Group 2 global origin -> " + origin2.to_a.inspect
"ok"
end
#make_2_instances_nested_transformed
#find_instances_and_print_global_positions
first run make_2_instances_nested_transformed
and then find_instances_and_print_global_positions on any active context
this only works if instances are unique, this is just an idea
for depth greater than 2 I do not think it works, local_transformation seems uncertain when this within instances of interest ...
(google translator)