How i can get the Profession Skill rank by playerbase?

[zhai789lfh]

With the Playerbase and offsets,i can get lots of info like crit haste etc.
And the Profession Skill ID,but why i can't get the skill rank?

[-Ryuk-]

With the Playerbase and offsets,i can get lots of info like crit haste etc.
And the Profession Skill ID,but why i can't get the skill rank?

Look how the game does it.

My guess, is to check this lua function:

GetProfessionInfo();

[Bananenbrot]

reverse API GetProfessionInfo - WoWWiki - Your guide to the World of Warcraft . As you can see the third return value is the skill level. Needless to say, this only works for the local player.
If you track down the skill level initialization, you will eventually come to int CGPlayer_C::GetSkillValue(CGPlayer_C* this, int skillIndex). The rest is a piece of cake:

skillRelated= *((_DWORD *)this + 1178);
result = *(_WORD *)(skillRelated+ 2 * skillIndex + 0x998);
if ( result > 0 )
    result += *(_WORD *)(skillRelated+ 2 * skillIndex + 3224);

For getting the skillIndex you need to reverse int CGPlayer_C::GetSkillIndexById(void *this, int id) though, which does essentially

DWORD offset = 0x798;
DWORD skillRelated = *((DWORD*)this + 1178);
for (int i = 0; i < 128; i++)
{
    if (id == *(WORD*)(skillRelated + offset + i * 2))
        return i;
}
return -1;

so you can leverage the connectivity between both.

[zhai789lfh]

And when I use CE to findout the skill point i found that the offset isn't the same each time,humm,it happen when the Race change ,why?

[flo8464]

And when I use CE to findout the skill point i found that the offset isn't the same each time,humm,it happen when the Race change ,why?

The problem is that you have no clue what you're doing. Of course the address changes each time as the memory is dynamically allocated.
Bananenbrot showed you how to do it, if you don't understand what he wants you to do, do your homework first.