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Resolved pbcefclient.exe crashes

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  1. Roland Smith
    Roland Smith
  2. PowerBuilder
  3. Wednesday, 17 January 2024 17:57 PM UTC

PB 2022 Build 1892 on Windows Server 2019 run via RemoteApps.

Multiple customers are reporting occasional aborts like this:

The application is MDI style. The background of the frame window has a tab control which hosts multiple WebBrowser controls. The controls display simple HTML developed by our documentation team.

A year ago we moved from PB 2019 to PB 2022 and I swapped out the IE WebBrowser control for the built-in WebBrowser control.

StaticText Object with word wrap
PowerBuilder objects cannot be deleted - Part Deux
Responses (2)
Miguel Leeuwe
Miguel Leeuwe Accepted Answer Pending Moderation
  1. Wednesday, 17 January 2024 21:04 PM UTC
  2. PowerBuilder
  3. # 1

Not the same bug, but who knows if it might solve your problem:

From our application object's Open event:

// 18/06/21: seems to be a necessary setting for CEF webbrowser control:
int li_ret
string ls_ret
li_ret = WebBrowserGet("UserAgent", ref ls_ret)
if ls_ret = "" then
	li_ret = WebBrowserSet("UserAgent", "AppeonWebBrowser")
	if li_ret <> 1 then
		Messagebox("Information", "Error setting the UserAgent for the WebBrowser", information!)
	end if
end if

// 05/07/21: avoid an existing Appeon bug of blowing up when using the webbrowser control on Windows Server 2012 R2:
open(w_wbrowser_dummy)
close(w_wbrowser_dummy)

There was a bug on Win server 2012 when closing the application. The "w_wbrowser_dummy" window is a simple popup window that's set to invisible. It avoided the crash when closing powerbuilder.

 

Comment
Roland Smith
  1. Roland Smith
  2. Wednesday, 17 January 2024 21:10 PM UTC
Thanks. I'm leaning towards insufficient memory on the server. They have SQL Server and RDS on the same virtual server running Windows Server 2019.

When I run the app on my laptop, it has 7 instances of pbcefclient.exe running.
  1. Helpful
Miguel Leeuwe
  1. Miguel Leeuwe
  2. Wednesday, 17 January 2024 21:17 PM UTC
Yw,

yes I've noticed that too. The cef seems to run multiple instances. I don't think it's very solid and I'm not too sure about the new webview2 either. Glad we, at our company don't have to use it so far.
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Chris Pollach @Appeon
Chris Pollach @Appeon Accepted Answer Pending Moderation
  1. Wednesday, 17 January 2024 18:57 PM UTC
  2. PowerBuilder
  3. # 2

Hi Roland;

  The only thing that I can think of is that for the R2 build's built-in Web Browser control it used the "Chromium" web engine vs the R3 release that uses the WebView2 web engine. I wonder if this is a Chromium browser engine issue?  Just a guess at the moment of course.

Regards .. Chris

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