refer to this page:
http://www.cic.gc.ca/english/information/applications/guides/5312ETOC.asp#5312E2
if you go down to the section which says:
Have you been charged, discharged or pardoned?
This section will help you determine if you are inadmissible if you have been charged, discharged or pardoned.
For charges withdrawn or dismissed:
•If the offence occurred in Canada, you are not inadmissible. ~ which amounts to that YOU ARE ADMISSABLE
•If the offence occurred outside Canada, you may be inadmissible.
For an absolute or conditional discharge:
•If the offence occurred in Canada, you are not inadmissible.
•If the offence occurred outside Canada, you may be inadmissible.
Pardon granted:
•If the offence occurred in Canada, you are not inadmissible if you were pardoned under the Criminal Records Act in Canada.
•If the offence occurred outside Canada, you may be inadmissible.
If you may be inadmissible, you must provide an officer with complete details of all charges, convictions, court dispositions, pardons, photocopies of applicable sections of foreign law(s), and court proceedings to allow the officer to determine whether or not you are inadmissible to Canada.