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Flash issue in web browser in winform

I have the strangest problem (but aren't all programming problems odd?). I have a winform that contains a webbrowser object that opens a website that has a flash. This winform works on touch computer (I can't find the brand or model number).

Here's what I know:

  • Flash objects embedded in a website accessed via the webbrowser object in my winform does not work as expected
  • the flash objects mentioned only react to the first 'click' on them. This way the website opens and if I click a button, that button works, but nothing afterwards works inside the flash object. If my first 'click' misses the button, nothing works after that.
  • trying to 'click' the flash button gives the same response as hovering over the button
  • This is not a problem with the touch portion of the touchscreen, as using a mouse also gives the same wrong answer.
  • This is not a problem with the webpage as I can open File Explorer on the same computer and navigate the webpage easily.
  • The program also runs 100% right on my personal computer, so it shouldn't be a program malfunction.
  • If it's not a touchscreen bug and not a program bug, I can't really blame anything right now.
  • EXACT same program worked 100% on our old touchscreen (which had other issues so we had to get rid of it).
  • Oh, also, surfing only a "normal" web page in a web browser in winform works fine.
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2 answers


We had a similar error and the only solution was to ensure that at least .NET 2.0 SP1 was installed on the client machine.



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I also faced the same problem while developing a Windows app.
Create a custom control like this:

// CREATE A CLASS AND INHERITS TO WEBBROWSER CLASS
public partial class ucWebBrowser : WebBrowser
{
     public ucWebBrowser()
     {
        InitializeComponent();
     }

     protected override void WndProc(ref Message m)
     {
         switch (m.Msg)
         {
            case 0x021:
            case 0x201:
            case 0x204:
            case 0x207:
                base.DefWndProc(ref m);
            return;
        }
        base.WndProc(ref m);
    }
}


You can now see this control in the Toolbox list. Now click and drag this control to your winform instead of the web browser control.

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