Embedding SWF file in WPF using Windows Forms Host?

Question

I'm currently in need of embedding an SWF file inside my WPF form. I read about it and there are at least two ways to accomplish this:

Embedding the SWF inside an HTML file and embed the latter in my form.
Embedding the SWF using the "AxShockwaveFlashObjects" assemblies. since this is meant to be used in WinForms and not in WPF, I will have to use a Windows Forms Host and put the Shockwave Flash Object inside of it.

Because of some of the requirements of my application (basically the "GetVariable" function of the shockwave object) I chose the second option. I put a Windows Forms Host in my WPF form, and put the following code in its constructor:

    public MainWindow()
    {
        InitializeComponent();

        AxShockwaveFlash flash = new AxShockwaveFlash();

        flash.Location = new System.Drawing.Point(0, 0);
        flash.Size = new System.Drawing.Size(200, 200);
        flash.Enabled = true;
        flash.Movie = "http://www.example.com/file.swf";

        windowsFormsHost1.Child = flash;
    }

But when I debug the code, I get this error on startup:

'The invocation of the constructor on type 'Flash_in_WPF.MainWindow' that matches the specified binding constraints threw an exception.' Line number '4' and line position '106'.

If I move that code to run when a button is clicked, I get a different error message:

Exception of type 'System.Windows.Forms.AxHost+InvalidActiveXStateException' was thrown.

Why am I getting these errors?

Edit: solved it! turns out I needed to move the whole initialization code to the "Grid_Loaded" event instead of in my ctor.

Thanks in advance

Hi, I'm also trying to solve this problem; could you elaborate on how you solved it? — debu
– debu, Commented Oct 2, 2013 at 15:36
I'm sorry, but I can' t say I remember after two years. It seems I cut the code you see here in MainWindow() (except the InitializeComponent() invocation) and moved it somewhere else. Can you further explain what you are doing and what happens when you try what I tried? — Itamar Marom
– Itamar Marom, Commented Oct 6, 2013 at 4:24

Itamar Marom · Accepted Answer · 2013-10-06 04:27:52Z

1

Solved it! Figured I should set the question as solved.

Turns out I needed to move the whole initialization code to the "Grid_Loaded" event instead of in my ctor.

answered Oct 6, 2013 at 4:27

Itamar Marom

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