[osg-users] Windowing system and osg

[Joe Kindle]

Hi,
So I'm new to osg. 
I've been trying to build an app which includes windows pop ups.
For example, let's say I have the main window which holds the osg viewer with 
the scene, and then I want to.press a button which will open a new window, in 
which inside I can enter a parameter to effact the scene.

Is there an example for that kind of app ? How do you recommend handlng it ? 

Thank you!

Cheers,
Joe

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[osg-users] Potential fix for osgDB MSVC linkage issues (FORCE:MULTIPLE needed)

[James Turner]

Hello,

With recent MSVC versions, we’re obliged to use /FORCE_:MULTIPLE, to work 
around the fact that osgDB.lib includes symbols from std::fstream classes, 
which then causes conflicts when other object files in a target (eg executable) 
being linked use  classes. This slows down linking since incremental 
linking is disabled, and makes our build output very noisy.

After some discussion, I came up with the following fix:


https://github.com/zakalawe/osg/commit/2098c022283f1afeb4bad0ffb4b682b884cc8f32

The idea is to only export the non-inlined symbols from osgDB::ofstream and 
::ifstream, but not to export the entire class, since doing so forces MSVC to 
also export the constructor and destructor for the base class (std::ofstream 
and std::ifstream).

Since we don’t use the osgDB versions of fstream in FlightGear, I can’t check 
if this is backwards compatible for other Windows OSG users, but I am hopeful 
that it is, and hence that this approach could be upstreamed. 

Kind regards,
James

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