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

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Roman



Joined: 21 Apr 2012
Posts: 676
Roman
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.
Post 23 Nov 2019, 14:20
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Tomasz Grysztar



Joined: 16 Jun 2003
Posts: 7755
Location: Kraków, Poland
Tomasz Grysztar
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'    
Post 23 Nov 2019, 14:33
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Roman



Joined: 21 Apr 2012
Posts: 676
Roman
Thanks !
Its magic Smile
Post 23 Nov 2019, 14:40
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