[c/c++ 11 - win32] - how can i detect if the caps lock is activated?

[Cambalinho]

how can i detect if the caps\scrool\num lock is activated?

[Cambalinho]

i have these code that works fine:

if ((GetKeyState(VK_CAPITAL) & 0x0001)!=0)
            a.Text="Caps Lock ON!";
        else
             a.Text="Caps Lock OFF!";

but the WM_KEYUP message only works if the window have the focus. so how can i detect when the window don't have the focus?

[Cambalinho]

finally the code works fine:

const int AnyKey=257;
const int NoKey=256;
const int ON=2;
void GetKeyBoardKeyState(int *keys)
{
    bool NoKey=true;
    bool AnyKey =false;
    for(int i=0; i<256; i++)
    {
        keys[i]=0;

        if(GetKeyState(i) & 0x8000)
        {
            //if a key isn't a lock activated(2)
            //put it 1
            keys[i]=1;

            //any key pressed
            NoKey=false;
            AnyKey=true;
        }
        else
        {
            keys[i]=0;
        }
    }

    //testing the lock activation
    if(((GetKeyState(VK_CAPITAL) & 0x0001)!=0))
        keys[VK_CAPITAL]=2;
    if(((GetKeyState(VK_NUMLOCK) & 0x0001)!=0))
        keys[VK_NUMLOCK]=2;
    if(((GetKeyState(VK_SCROLL) & 0x0001)!=0))
        keys[VK_SCROLL]=2;

    if(NoKey==false)
    {
        keys[256]=0;
    }
    else
    {
        keys[256]=1;
    }

    if(AnyKey==true)
    {
        keys[257]=1;
    }
    else
    {
        keys[257]=0;
    }
}

it needs be optimizated, but works fine.
i use it with a timer with 120ms. even, when the window loses the focus, i can get the keys states ;)