Getting strange InteropServices .SEHException exception

[MJB]

I never get the above exception in Windows 2k. It only happens in
Windows XP, which is the first oddity. My application is multi-threaded and
I use the webbrowser control and media player. The exception normally occurs
when I open the browser control or media control, but sometimes it just
occurs randomly. I was thinking first that it was some sort of build
difference with the COM interop components, but I re-referenced and rebuilt
everything on an XP machine and that didn't help. I'm now thinking it's
some sort of multi-threading error. I don't know, I'm at a loss. If anyone
has experienced a similar problem and can provide me with some info. I will
greatly appreciate it.

Here's the full exception dump:

System.Runtime. InteropServices .SEHException: External component has thrown
an exception.
at System.Windows. Forms.UnsafeNat iveMethods.Disp atchMessageW(MS G& msg)
at
System.Windows. Forms.Component Manager.System. Windows.Forms.U nsafeNativeMeth o
ds+IMsoComponen tManager.FPushM essageLoop(Int3 2 dwComponentID, Int32 reason,
Int32 pvLoopData)
at System.Windows. Forms.ThreadCon text.RunMessage LoopInner(Int32 reason,
ApplicationCont ext context)
at System.Windows. Forms.ThreadCon text.RunMessage Loop(Int32 reason,
ApplicationCont ext context)
at System.Windows. Forms.Applicati on.Run(Form mainForm)
at MyApp.frmMain.M ain() in C:\SoftwareDev\ MyApp\MyApp
v5.0\SourceCode \MyApp\frmMain. cs:line 2901

[Tom Shelton]

In article <Oc************ **@TK2MSFTNGP12 .phx.gbl>, MJB wrote:

I never get the above exception in Windows 2k. It only happens in
Windows XP, which is the first oddity. My application is multi-threaded and
I use the webbrowser control and media player. The exception normally occurs
when I open the browser control or media control, but sometimes it just
occurs randomly. I was thinking first that it was some sort of build
difference with the COM interop components, but I re-referenced and rebuilt
everything on an XP machine and that didn't help. I'm now thinking it's
some sort of multi-threading error. I don't know, I'm at a loss. If anyone
has experienced a similar problem and can provide me with some info. I will
greatly appreciate it.

Here's the full exception dump:

System.Runtime. InteropServices .SEHException: External component has thrown
an exception.
at System.Windows. Forms.UnsafeNat iveMethods.Disp atchMessageW(MS G& msg)
at
System.Windows. Forms.Component Manager.System. Windows.Forms.U nsafeNativeMeth o
ds+IMsoComponen tManager.FPushM essageLoop(Int3 2 dwComponentID, Int32 reason,
Int32 pvLoopData)
at System.Windows. Forms.ThreadCon text.RunMessage LoopInner(Int32 reason,
ApplicationCont ext context)
at System.Windows. Forms.ThreadCon text.RunMessage Loop(Int32 reason,
ApplicationCont ext context)
at System.Windows. Forms.Applicati on.Run(Form mainForm)
at MyApp.frmMain.M ain() in C:\SoftwareDev\ MyApp\MyApp
v5.0\SourceCode \MyApp\frmMain. cs:line 2901

You wouldn't be updating the UI from a background thread would you? And
if you are, are you making sure your using .Invoke to do it?

Tom Shelton

[MJB]

I removed the entry:

Application.Ena bleVisualStyles ();

from my main function, and so far it seems to be more stable. I have a few
more tests to run, but I hope this nipped it in the bud.

Thanks,
Matt
"MJB" <mb*@email.co m> wrote in message
news:Oc******** ******@TK2MSFTN GP12.phx.gbl...

I never get the above exception in Windows 2k. It only happens in
Windows XP, which is the first oddity. My application is multi-threaded and I use the webbrowser control and media player. The exception normally occurs when I open the browser control or media control, but sometimes it just
occurs randomly. I was thinking first that it was some sort of build
difference with the COM interop components, but I re-referenced and rebuilt everything on an XP machine and that didn't help. I'm now thinking it's
some sort of multi-threading error. I don't know, I'm at a loss. If anyone has experienced a similar problem and can provide me with some info. I will greatly appreciate it.

Here's the full exception dump:

System.Runtime. InteropServices .SEHException: External component has thrown
an exception.
at System.Windows. Forms.UnsafeNat iveMethods.Disp atchMessageW(MS G& msg)
at
System.Windows. Forms.Component Manager.System. Windows.Forms.U nsafeNativeMeth o ds+IMsoComponen tManager.FPushM essageLoop(Int3 2 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows. Forms.ThreadCon text.RunMessage LoopInner(Int32 reason,
ApplicationCont ext context)
at System.Windows. Forms.ThreadCon text.RunMessage Loop(Int32 reason,
ApplicationCont ext context)
at System.Windows. Forms.Applicati on.Run(Form mainForm)
at MyApp.frmMain.M ain() in C:\SoftwareDev\ MyApp\MyApp
v5.0\SourceCode \MyApp\frmMain. cs:line 2901

[Tom Spink]

Hi MJB, Do you have Application.DoE vents after
Application.Ena bleVisualStyles ??

--
HTH,
-- Tom Spink, Über Geek

Please respond to the newsgroup,
so all can benefit

" System.Reflecti on Master "

==== Converting to 2002 ====
Remove inline declarations
"MJB" <mb*@email.co m> wrote in message
news:#y******** ******@TK2MSFTN GP09.phx.gbl...

I removed the entry:

Application.Ena bleVisualStyles ();

from my main function, and so far it seems to be more stable. I have a few more tests to run, but I hope this nipped it in the bud.

Thanks,
Matt
"MJB" <mb*@email.co m> wrote in message
news:Oc******** ******@TK2MSFTN GP12.phx.gbl...

I never get the above exception in Windows 2k. It only happens in
Windows XP, which is the first oddity. My application is multi-threaded

and

I use the webbrowser control and media player. The exception normally

occurs

when I open the browser control or media control, but sometimes it just
occurs randomly. I was thinking first that it was some sort of build
difference with the COM interop components, but I re-referenced and

rebuilt

everything on an XP machine and that didn't help. I'm now thinking it's
some sort of multi-threading error. I don't know, I'm at a loss. If

anyone

has experienced a similar problem and can provide me with some info. I

will

greatly appreciate it.

Here's the full exception dump:

System.Runtime. InteropServices .SEHException: External component has thrown an exception.
at System.Windows. Forms.UnsafeNat iveMethods.Disp atchMessageW(MS G& msg) at

System.Windows. Forms.Component Manager.System. Windows.Forms.U nsafeNativeMeth o

ds+IMsoComponen tManager.FPushM essageLoop(Int3 2 dwComponentID, Int32

reason,

Int32 pvLoopData)
at System.Windows. Forms.ThreadCon text.RunMessage LoopInner(Int32 reason, ApplicationCont ext context)
at System.Windows. Forms.ThreadCon text.RunMessage Loop(Int32 reason,
ApplicationCont ext context)
at System.Windows. Forms.Applicati on.Run(Form mainForm)
at MyApp.frmMain.M ain() in C:\SoftwareDev\ MyApp\MyApp
v5.0\SourceCode \MyApp\frmMain. cs:line 2901

[Hananiel]

I am getting the same problem. But I havent used
Application.Ena bleVisualStyles (); Specifically my error occurs on a return
from a dynamically created form, after a showdialog. Removing showdialog
removes the problem (but i dont know conclusively).
Thanks,
Hananiel

"MJB" <mb*@email.co m> wrote in message
news:#y******** ******@TK2MSFTN GP09.phx.gbl...

I removed the entry:

Application.Ena bleVisualStyles ();

from my main function, and so far it seems to be more stable. I have a few more tests to run, but I hope this nipped it in the bud.

Thanks,
Matt
"MJB" <mb*@email.co m> wrote in message
news:Oc******** ******@TK2MSFTN GP12.phx.gbl...

I never get the above exception in Windows 2k. It only happens in
Windows XP, which is the first oddity. My application is multi-threaded

and

I use the webbrowser control and media player. The exception normally

occurs

when I open the browser control or media control, but sometimes it just
occurs randomly. I was thinking first that it was some sort of build
difference with the COM interop components, but I re-referenced and

rebuilt

everything on an XP machine and that didn't help. I'm now thinking it's
some sort of multi-threading error. I don't know, I'm at a loss. If

anyone

has experienced a similar problem and can provide me with some info. I

will

greatly appreciate it.

Here's the full exception dump:

System.Runtime. InteropServices .SEHException: External component has thrown an exception.
at System.Windows. Forms.UnsafeNat iveMethods.Disp atchMessageW(MS G& msg) at

System.Windows. Forms.Component Manager.System. Windows.Forms.U nsafeNativeMeth o

ds+IMsoComponen tManager.FPushM essageLoop(Int3 2 dwComponentID, Int32

reason,

Int32 pvLoopData)
at System.Windows. Forms.ThreadCon text.RunMessage LoopInner(Int32 reason, ApplicationCont ext context)
at System.Windows. Forms.ThreadCon text.RunMessage Loop(Int32 reason,
ApplicationCont ext context)
at System.Windows. Forms.Applicati on.Run(Form mainForm)
at MyApp.frmMain.M ain() in C:\SoftwareDev\ MyApp\MyApp
v5.0\SourceCode \MyApp\frmMain. cs:line 2901