CreateToolhelp32Snapshot Windows Mobile 5

Question

 

 have struggled with getting the Sample app 'pviewce' to work under Windows Mobile 5, on an Imate Jamin (QTEK S200).

For some reason

CreateToolhelp32Snapshot();

Returns an

INVALID_HANDLE_VALUE

Now it gets even more weird, GetLastError() r== 8
Which means :

"Not enough storage is available to process this command. "

I still have 19MB of free RAM, and other applications that use CreateToolhelp32Snapshot (exe files) seem to work.
Security is switched off.

I am using "Windows Mobile 2005 SDK" for the PocketPC

 

Any clues ?

 

Thanks ...

Answer 1

I have exactly the same problem on Windows Mobile 5.0 (Pocket PC) calling CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0) from a DLL
It returns an invalid handle and GetLastError() == 8 (not enough storage...)
And there is plenty of memory...
Couldn't find any way to solve it.
Any help ? Thanks again.

Answer 2

You're running out of memory as snapshoot includes all heaps by default. Please add "secret" TH32CS_SNAPNOHEAPS flag to fix that.

Note: TH32CS_SNAPNOHEAPS = 0x40000000

 

Answer 3

Try using TH32CS_SNAPNOHEAPS flag:

CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS|TH32CS_SNAPNOHEAPS, 0);

(Credit: Ilya Tumanov)

Answer 4

Cool stuff , working !

 

I am not sure how I could have figured this out, especially when the sample app, would normally work.

 

But thanks !

 

Answer 5

It works great ! Thank you very much for your answers !

Kaligero

Answer 6

Thats was deep deep in Win Mobile API. I have an old code from 2003 I was migrating to WM 2005, 6.0, 6.1 and when I saw that GetLastError()= 8 I panic. I use this method to kill my app when is running and I need to write to the database.
I also was checking my code and I kill iexplorer when I open, re-open it to display an html doc I create.
Thanks.

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