If you look in your standard include directory you should have a file named "winuser.h", that will list all of the defined virtual key codes. For keys like the standard alphanumeric ones ('A', 'B', '0', '1' etc) you would use something like:

static_cast<int>('KEY NAME GOES IN HERE')

So to use the '+' and '-' keys (on my english keyboard) I would use:

// '+' keystatic_cast<int>('+')// '-' keystatic_cast<int>('-')

As the codes are just their ASCII equivalent, you could go to a site such as www.lookuptables.com and just find the actual numeric code for that key and use that, e.g:

// '+' key = 43 decimal// '-' key = 45 decimal

Hope that helps you [smile].