As I did not find a solution for this situation I used this trick:
string pathToVdProject = null;
try
{
Window solutionExplorer = mApplicationObject.Windows.Item(Constants.vsWindowKindSolutionExplorer);
if (solutionExplorer != null)
{
UIHierarchy uiHierarchy = (UIHierarchy)solutionExplorer.Object;
if (uiHierarchy != null)
{
object[] selectedItems = (object[])uiHierarchy.SelectedItems;
foreach (UIHierarchyItem uiItem in selectedItems)
{
// Valid project
if (uiItem.Object is EnvDTE.Project)
{
EnvDTE.Project project = uiItem.Object as EnvDTE.Project;
if (project.FullName.Contains(".vdproj") || project.UniqueName.Contains(".vdproj")
|| (String.Compare(project.Kind, ProjectsGuids.guidVdSetupProject, true) == 0))
{
// Valid Project has property FullName which is full path to .vdproj file
pathToVdProject = project.FullName;
break;
}
}
else if (uiItem.Object is ProjectItem)
{
// This never happens...
}
else
{
// This is a little tricky: Unmodeled Projects cannot be casted to EnvDTE.Project http://msdn.microsoft.com/en-us/library/hw7ek4f4%28v=vs.80%29.aspx
Solution2 solution = (Solution2)mApplicationObject.Solution;
// So get all projects in solution (including unmodeled) and try to find a match by name
foreach (Project project in solution.Projects)
{
if (project.Kind == EnvDTE.Constants.vsProjectKindUnmodeled)
{
// Unmodeled project found (Normal projects are recognized in 'uiItem.Object is EnvDTE.Project'
if (project.Name.Contains(uiItem.Name))
{
// This is 'Project' for selected item
if (project.Name.Contains(".vdproj") || project.UniqueName.Contains(".vdproj"))
{
// Unmodeled projects does not offer property FullName and UniqueName does NOT contain full path to file!
FileInfo fileInfo = new FileInfo(solution.FullName);
// Create full path from solution (.sln) path and project relative path
pathToVdProject = fileInfo.DirectoryName + "\\" + project.UniqueName;
break;
}
}
}
}
}
}
}
}