Fasm 1.73 64 bit GetAsyncKeyState not work.

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Index > Windows > Fasm 1.73 64 bit GetAsyncKeyState not work.

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Roman

Joined: 21 Apr 2012
Posts: 1823

Roman 23 Nov 2019, 14:20

Code:

     invoke GetAsyncKeyState,'1'

     and eax,0x8000
     test eax,eax
     je NotPressed

     invoke MessageBox,0, 'Key pressed',0,0

NotPressed:

I press key '1' but not print message.
This code work in 32 bit.

23 Nov 2019, 14:20

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8356
Location: Kraków, Poland

Tomasz Grysztar 23 Nov 2019, 14:33

The problem here is that the variants of "invoke" macro that allow embedded string arguments would pass a pointer to a string instead of character code to GetAsyncKeyState. So, for example, your snippet would work correctly with "win32a.inc" but not with "win32ax.inc". In 64-bit case even the basic "win64a.inc" already supports embedded strings.

To make this unambiguous, simply enforce numeric treatment of the argument like this:

Code:

     invoke GetAsyncKeyState,+'1'

23 Nov 2019, 14:33

Roman

Joined: 21 Apr 2012
Posts: 1823

Roman 23 Nov 2019, 14:40

Thanks !
Its magic Smile

23 Nov 2019, 14:40

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