[Dev] WPF System.Windows.Window Help Please

[no1knowsy]

Okay so I've been trying to get this new Demonbuddy WPF plugin Config button system to work, and I'm failing at life.


I finally got Visual Studio to recognize what a System.Windows.Window is. I was missing a PresentationMain.dll or something.


Anyways, I set up a UserControl, and then realized that wouldn't work. So I changed it to inherit from : window and also in the xaml to <Window>
I don't get any errors in VS, but when Demonbuddy compiles it gives me the error

Message=The calling thread must be STA, because many UI components require this.
       Source=PresentationCore

I'll attach my files. It's for the BreakTaker plugin.
Attached is the VS debugger text as well as all source for .sln
You'll have to re-add in references to Demonbuddy.exe

From what I've seen from google searches it has to do with possible threading issues when it deals with UIs, but I couldn't find a way around it.
I tried the following:

public Window DisplayWindow        {
            get
            {
                return new BreakTakerWPF();
            }
        }

As well as:
public BreakTakerWPF BreakTakerUI = new BreakTakerWPF();


        public Window DisplayWindow
        {
            get
            {
                return BreakTakerUI;
            }
        }

Both caused compiler issues.


Plz help teh Panda!

 

[no1knowsy]

Nothin?

Someone in the community has to have some knowledge other than just the Buddy Team.


Lets not just rely on them now.

 

[eax]

This looks like an issue with DB, not your code. The thread loading the UI needs to be in a STA.

 

[no1knowsy]

This looks like an issue with DB, not your code. The thread loading the UI needs to be in a STA.

I've been drinking a little atm...
But WTF is a STA?

Btw, ty for the response

 

[eax]

I've been drinking a little atm...
But WTF is a STA?

Cbf to go into details: ApartmentState Enumeration (System.Threading)
Basically the devs will need to call Thread.SetApartmentState Method (System.Threading) before starting whatever thread deals with plugins.

EDIT: This might help if the first link was too vague. c# - What does [STAThread] do? - Stack Overflow

 

[no1knowsy]

Sound good.

Thanks eax
I have no idea what's going on with WPF so you've helped plenty already.

 

[Puffo]

Your not alone m8... Bump for the devs!

 

[Hawker]

Its a tricky issue and its low priority compared to the bugs we have to fix before the 18th. I've made a ticket and it should be fixed by July 1; it will probably be a lot sooner but no promises.

 

[no1knowsy]

Sounds good to me.
I got stuff to handle anyways, and that gives me some time.

 

[superreeen]

You can try to create your form in a dispatcher

Dispatcher.CurrentDispatcher Property (System.Windows.Threading)

public Window DisplayWindow
        {
            get
            {
				return (Window)Dispatcher.CurrentDispatcher.Invoke(() => new BreakTakerWPF());
            }
        }

But I don't know if it works with DB.