When using content assist Windows Platform does not show up in the platforms shown in the dialog.
It appears that this is caused by the properties assigned to the project when importing a project, when viewing the content assist settings in project properties an imported project will be missing the Windows option, but a project created in Studio will have this option.
I checked inside the api.jsca and it seems to be showing items listed as being valid for Windows but does not contain Windows specific items. Separate issue dealt with by TIMOB-23741
1. In Appc Studio on Windows bring up the content assist dialog by typing Ti.
In Appc Studio on Windows type Ti.Windows Separate issue dealt with by TIMOB-23741
Nothing is shown
1. Windows should be shown as a platform
Ti.Windows components should be shown Separate issue dealt with by TIMOB-23741