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Hi

when I change some function in "MeshSamplingTools", when I debug, it only run with the old code, why?

Does the compilation actually succeeds? Make sure you compile the INSTALL project each time also.

I am sure I compile the INSTALL project each time , but have the same problem.
I have another question is how can I add a word to the window.

Then you should check that the executable generated by Visual (see the Console report when Cmake copies everything to the installation directory) isbthe same as the one derined as the executed file in the 'Debug' section of the project properties (mind the release / debug configurations difference.

And where do you want to display the text exactly?

I want draw a line, then display it X value at the begin and end line.

One option would be to use a "2D label" (cc2DLabel) that can be used to display a vector with labels for each vertex (simply add two points to the cc2DLabel instance).

Otherwise you'll have to develop your own entity type (maybe by subclassing the ccPolyline class and reimplementing the 'drawMeOnly' method) and manage the text display from here.

Hi
For the show3Dname, the text is a label?

Refer to the 'CreateLabel' of ccPointPairRegistrationDialog.cpp.

I believe you indeed have to call 'setName' on a label and then 'displayPointLegend(true)'. In this case, it means you have to create two labels, one for each vertex of the line.

HI
I have another question is can I change the position when I show the 3D name,thank you.

No, I don't think it's currently possible.