OpenEuphoria

Re: Win32 (GetAsyncKeyState)

• Posted by Adam Weeden <theskaman at MINDSPRING.COM> May 19, 1999
• 519 views

It might be this.  In C (and its successor) whenever you are testing a
variable against many values you use a switch statement like this:

// Sorry abou the C code, necessary to show my point.
// Assume we have already set value of key to what ASyncKeyState
// returns.

switch(key)
{
    case VALUE1:
        {
            // Do whatever you need to do for VALUE1
        } break;
    case VALUE2:
        {
            // Do whatever you need to do for VALUE2
        } break;
    default:
        {
            // If key doesnt match any of the above values do this
        } break;
}

In Euphoria this could be wriiten as
If key = VALUE1 then  -- Keep in mind VALUE1 in my example is a
                                       -- constant so this is legal.

        -- Do whatever you need to do for VALUE1
elsif key = VALUE2 then
        -- Do whatever you need to do for VALUE2
else
        -- If key doesnt match any of the above values do this
end if

My point is that maybe you need some sort of function that would parse a
return value of GetAsyncKeyState that you do not need.
Just a thought.

Adam Weeden
-----Original Message-----
From: Molasses <molasses at ALPHALINK.COM.AU>
To: EUPHORIA at LISTSERV.MUOHIO.EDU <EUPHORIA at LISTSERV.MUOHIO.EDU>
Date: Tuesday, May 18, 1999 8:45 PM
Subject: Win32 (GetAsyncKeyState)


>Hi all,
>
>I have recently been playing around with the user32.dll function
>GetAsyncKeyState.
>I'm using it for moving around in a 3dfx Glide prog.
>
>Problems:
>
>* GetAsyncKeyState only works after I open a message box.
>
>This may be something to do with not opening a standard window, I open a
>Glide window like this:
>context = grSstWinOpen( GetDesktopWindow(), GR_RESOLUTION_640x480, ...)
>
>* GetAsyncKeyState stops responding if I hit a key that i'm not checking
>for.
>
>Anyone know what I'm doing wrong?
>
>Thanks,
>
>-molasses