How to prepopulate the currency of a commerce_price field I want to prepopulate the currency (select list of available currencies) of a commerce_price field. 

(edit – specify my question):

I don't want to prepopulate any value (e.g. EUR) for my field as a default value for all new content. I need to have different currency values prepopulated through content-create links out of different views. 

Example (I know the syntax doesn't work, that's my problem):

1st Link: http://www.example.com/node/add/contenttype?[curreny-value]=USD

2nd Link: http://www.example.com/node/add/contenttype?edit[title]=EUR

The curreny value should be visible but disabled (not editable) in any prepopulated forms.

Is that possible with the prepopulate module or do I need a hook?
You can use Commerce Multi Currency module.


  This module enhances some of the multi-currency capabilities of Drupal
  Commerce.
  
  Current features:
  
  UI for fine granular definition of exchange rates. (Every currency
  combination can be defined separately if needed) Synchronization of
  currency exchange rates directly from the European Central Bank (ECB).
  UI to specify which rates shall be synchronized and which are handled
  manually. Generation of currency specific price fields inclusive
  generation of rule-set to handle them. hooks for easy integration of
  custom currency exchange rate sources.


This will give you a 'Price with currency' widget for your field.

And you will have a dropdown with all active currencies next to the price.