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Know if shift key is down
Message
From
20/04/2009 09:46:15
 
 
To
20/04/2009 09:22:48
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Environment versions
Visual FoxPro:
VFP 9 SP1
Miscellaneous
Thread ID:
01395572
Message ID:
01395576
Views:
114
This message has been marked as the solution to the initial question of the thread.
>Is there some way to know if the shift key is down .... when the focus is on a different form?
>
>Background: from within my PEMEditor tool, which works when using either the Form or Class Designer, I want to know when the user has held the shfit key while using the designer (presumably for selecting multiple objects).
>
>Thus, normal techniques of capturing key movements or mouse movements are irrelevant, since these events are not occurring on my form.
>
>Thanks in advance.
&& do at startup
declare short GetKeyState in User32 integer vKey

* Left SHIFT key
#define VK_LSHIFT (0xA0)

* Right SHIFT key
#define VK_RSHIFT (0xA1)


#define	VK_LSHIFT_DOWN		bittest(GetKeyState(VK_LSHIFT), 31)
#define	VK_RSHIFT_DOWN		bittest(GetKeyState(VK_RSHIFT), 31)


if( VK_LSHIFT_DOWN or VK_RSHIFT_DOWN )
   && yes
endif
Gregory
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