[maemo-developers] Assertion failed unexpectedly

[From: Markku Vire]

Hi,

The problem behind "changing parameters" is that you are attaching wrong
type of singal handler to signal (i.e. the number/type of parameters
don't match).

I didn't actually try your code, but at least you cannot connect
"callback_do_test" (3 parameters) to "clicked" signal (2 parameters).
This will lead to you application accessing arbitrary data.

Hope this helps,

-Markku-

Jakov wrote:
> Hi,
> 
> I have a very simple app running on Maemo 4.0 with a textbox and a button.
> As I click on the button, a callback function is invoked to show the content
> of the textbox. I don't know why the data pointer which is passed to
> callback function is sometimes NULL:
> - if I click on the textbox (a virtual keyboard shown below) and then click
> on the button, the callback function failed due to assertion of data pointer
> - if I just click the button (don't focus on the textbox), the data pointer
> is not NULL, but the child of it is NULL.
> 
> I'm so confused. It didn't happen on Maemo 3.2 before.
> 
> Here's the code of 4 files (interface.*, callbacks.*) in my project /src/ui,
> I follow the structure of maemopad-2.1
> http://paste.org/index.php?id=2098
> 
> If you're interested in solving this problem, please help me out. Thanks
> very much!
> 
> Best regards,
> Jakov
> 
> 
> 
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