Re: Using GetAsyncKeyState() ?!!

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#14342

From: Dennis Jones
Date: Sun, 17 Aug 2003 18:41

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"Chris Hill" <Chris244@aol.com> wrote in message
news:3f3f5610.3143789530@forums.borland.com...
> On Sun, 17 Aug 2003 11:08:23 +0300, "Schandler"
> <theslider@programmer.net> wrote:
>
> >I want to use the api function GetAsyncKeyState (int vkey) to know if a
> >specified key is down at the moment I'm calling the function
> >the win32 api help says that the function detectes if the key is down if
the
> >"most significant bit is set" !! which I don't know what it means
> >I tried to call the function to check if the Shift key is pressed on
windows
> >98 as follows
>
> Try this:
> int keydown = (GetAsyncKeyState(VK_SHIFT) < 0);

Or, more explicitly, check the most significant bit:

bool keydown = ((GetAsyncKeyState(VK_SHIFT) & 0x8000) == 0x8000);

- Dennis

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Subject: Re: Using GetAsyncKeyState() ?!!
Date: Sun, 17 Aug 2003 11:41:47 -0700
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