Use LookupControlTemplate for specific domain object

Hello Xavier,
Thanks for your patience. I have attached a modified version of your sample showing how to solve your problem. Please let me know in case of any difficulty.

Let me also elaborate on the ideas behind this solution:

1. Create a new show view strategy class, derived from the existing strategy (for instance from the ShowInMultipleWindowsStrategy) and with a System.Type property (DetailViewObjectType):

C#
public class MyShowInMultipleWindowsStrategy : ShowInMultipleWindowsStrategy {  
 public MyShowInMultipleWindowsStrategy(XafApplication application) : base(application) { }  

 private Type \_detailViewObjectType;  
     public Type DetailViewObjectType {   get { return \_detailViewObjectType; }  
 }  
 protected override void ShowViewCore(ShowViewParameters parameters, ShowViewSource showViewSource) {  
 \_detailViewObjectType = null;  
 if (parameters.CreatedView is DetailView)  
 {  
 if (parameters.CreatedView.ObjectType == typeof(DomainObject1)  
 || parameters.CreatedView.ObjectType == typeof(DomainObject2)  
 || parameters.CreatedView.ObjectType == typeof(DomainObject3)) {  
 \_detailViewObjectType = parameters.CreatedView.ObjectType;  
 }  
 }  
 base.ShowViewCore(parameters, showViewSource);  
 }  
}

2. Override the ShowViewCore method to obtain the information about the currently opened view to determine its object type.
   It will be accessed via the DetailViewObjectType property.
3. Declare a custom application class, derived from the WinApplication class, and override the CreateShowViewStrategy virtual method to create the required strategy:

C#
public class MyWinApplication : WinApplication {  
 protected override ShowViewStrategyBase CreateShowViewStrategy() {  
     return new MyShowInMultipleWindowsStrategy(this);  
 }  
}

4. Create a custom template for the required object type as described in Template Customization.

C#
static void Main() {  
//...  
 MyWinApplication winApplication = new MyWinApplication();  
 winApplication.CreateCustomTemplate += new EventHandler<CreateCustomTemplateEventArgs\>(winApplication\_CreateCustomTemplate);  
//...  
}  

 static void winApplication\_CreateCustomTemplate(object sender, CreateCustomTemplateEventArgs e) {  
 if (e.Context.Name == TemplateContext.View) {  
 Type objectType = ((MyShowInMultipleWindowsStrategy)(((MyWinApplication)sender).ShowViewStrategy)).DetailViewObjectType;  
 if (objectType == null) {  
 e.Template = new DevExpress.ExpressApp.Win.CustomTemplates.DetailViewForm();  
 return;|  
 }  
 if (objectType == typeof(DomainObject1))  
 e.Template = new DevExpress.ExpressApp.Win.CustomTemplates.DetailViewForm1();  
 else  
 if (objectType == typeof(DomainObject2))  
 e.Template = new DevExpress.ExpressApp.Win.CustomTemplates.DetailViewForm2();  
 else  
 if (objectType == typeof(DomainObject3))  
 e.Template = new DevExpress.ExpressApp.Win.CustomTemplates.DetailViewForm3();  
 }  
 }  
}

Thanks,
Dennis