Please help with input method

[Ionutz Borcoman <borco borco-ei eng hokudai ac jp>]

Hi,

I have the following problem: 

- I use in my program langdrill the skkinput method to insert Japanese
text in a Text Box;
- Everything is OK if the skkinput is stoped when I close my app;
- if the skkinput was not stoped, then my app sigsegvs when the main
window is destroyed and the program cannot make it's usual cleanup.

I have the following questions:
- how can I test to see if skkinput is active for my app ?
- how can I stop it from the program ?

TIA,

Ionutz