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VDSDLL 28 - Key capture question

 
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marty
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Joined: 10 May 2001
Posts: 789
PostPosted: Wed Feb 23, 2005 2:11 pm    Post subject: VDSDLL 28 - Key capture question Reply with quote
Hi,

I have been looking at the Keyboard example that comes with VDSDLL (version 2.Cool and noticed it takes like 80% of the CPU.

Do you think there is a way to optimize this without loosing any key pressed?

If I had a pause it may miss some keys:

Here is the current demo script:
Code:

#define command,dll
#define function,dll


external @path(%0)vdsdll.dll,Public Freeware Key|90257236

  DIALOG CREATE,Keyboard example,-1,0,380,270
  DIALOG ADD,STYLE,STYLE2,Times New Roman,12
  DIALOG ADD,STYLE,STYLE1,Wingdings,22
  DIALOG ADD,BUTTON,UP,160,60,40,40,é,DEFAULT,STYLE1
  DIALOG ADD,BUTTON,LEFT,210,10,40,40,ç,STYLE1
  DIALOG ADD,BUTTON,DOWN,210,60,40,40,ê,STYLE1
  DIALOG ADD,BUTTON,RIGHT,210,110,40,40,è,STYLE1
  DIALOG ADD,BUTTON,INSERT,10,10,40,40,Ins,STYLE2
  DIALOG ADD,BUTTON,HOME,10,60,40,40,Home,STYLE2
  DIALOG ADD,BUTTON,PRIOR,10,110,40,40,Up,STYLE2
  DIALOG ADD,BUTTON,DELETE,60,10,40,40,Del,STYLE2
  DIALOG ADD,BUTTON,END,60,60,40,40,End,STYLE2
  DIALOG ADD,BUTTON,NEXT,60,110,40,40,Down,STYLE2
  DIALOG ADD,BUTTON,NUMPAD0,210,170,90,40,0,STYLE2
  DIALOG ADD,BUTTON,NUMPAD1,160,170,40,40,1,STYLE2
  DIALOG ADD,BUTTON,NUMPAD2,160,220,40,40,2,STYLE2
  DIALOG ADD,BUTTON,NUMPAD3,160,270,40,40,3,STYLE2
  DIALOG ADD,BUTTON,NUMPAD4,110,170,40,40,4,STYLE2
  DIALOG ADD,BUTTON,NUMPAD5,110,220,40,40,5,STYLE2
  DIALOG ADD,BUTTON,NUMPAD6,110,270,40,40,6,STYLE2
  DIALOG ADD,BUTTON,NUMPAD7,60,170,40,40,7,STYLE2
  DIALOG ADD,BUTTON,NUMPAD8,60,220,40,40,8,STYLE2
  DIALOG ADD,BUTTON,NUMPAD9,60,270,40,40,9,STYLE2
  DIALOG ADD,BUTTON,NUMLOCK,10,170,40,40,Num,STYLE2
  DIALOG ADD,BUTTON,DIVIDE,10,220,40,40,/,STYLE2
  DIALOG ADD,BUTTON,MULTIPLY,10,270,40,40,*,STYLE2
  DIALOG ADD,BUTTON,SUBTRACT,10,320,40,40,-,STYLE2
  DIALOG ADD,BUTTON,ADD,60,320,40,90,+,STYLE2
  DIALOG ADD,BUTTON,RETURN,160,320,40,90,Enter,STYLE2
  DIALOG ADD,BUTTON,DECIMAL,210,270,40,40,.,STYLE2
  DIALOG ADD,TEXT,TEXT1,10,10,350,240,Press any key on the right side on the keyboard.,STYLE2
  DIALOG SHOW
  list create,1
  list loadtext,1
"UP
"LEFT
"DOWN
"RIGHT
"NUMPAD0
"NUMPAD1
"NUMPAD2
"NUMPAD3
"NUMPAD4
"NUMPAD5
"NUMPAD6
"NUMPAD7
"NUMPAD8
"NUMPAD9
"NUMLOCK
"DIVIDE
"MULTIPLY
"SUBTRACT
"ADD
"RETURN
"DECIMAL
"DELETE
"END
"NEXT
"INSERT
"HOME
"PRIOR
:evloop
  %A = @event()
  if @equal(%A,CLOSE)
    goto CLOSE
  end
  list seek,1,0
  %B =
  repeat
    if @equal(@dll(keyboard,@item(1)),1)
      %B = 1
      dialog show,@next(1)
    else
      dialog hide,@next(1)
    end
  until @equal(@index(1),@count(1))
  if @not(%B)
    dialog show,TEXT1
  else
    dialog hide,TEXT1
  end
  goto evloop
:close



Thanks....
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Boo
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Joined: 31 Oct 2003
Posts: 599
Location: Gulf Breeze, Florida USA
PostPosted: Wed Feb 23, 2005 2:32 pm    Post subject: Reply with quote
Hi Marty,

How about using the Windows API instead of the DLL?

Cheers,

- Boo
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marty
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Joined: 10 May 2001
Posts: 789
PostPosted: Wed Feb 23, 2005 4:33 pm    Post subject: Reply with quote
I did but on some systems its not very accurate.. I tried on a Pentium 400mhz for example.

I am really looking for a solution that does not take the CPU. and works on most system.,
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Boo
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Joined: 31 Oct 2003
Posts: 599
Location: Gulf Breeze, Florida USA
PostPosted: Wed Feb 23, 2005 7:20 pm    Post subject: Reply with quote
Hi Marty,

Just curious... How is it not very accurate? And on what systems/operating systems?

Thanks,

- Boo
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Mac
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Joined: 08 Jul 2000
Posts: 1585
Location: Oklahoma USA
PostPosted: Wed Feb 23, 2005 9:07 pm    Post subject: Reply with quote
Not sure how accurate the WAIT is on VDS 5, but
using a WAIT ".001" should reduce CPU usage to
nearly nothing.

Or ya can use the API "Sleep(1)".

Either one should be approx 1/1000 second, and I
doubt the user can type that fast. Wink

Cheers, Mac Smile
_________________
VDSug.dll does file IO, check/disable menu items,
non-VDS dlls, draw functions and more...
Free download (30k dll size) at:
http://www.vdsworld.com/download.php?id=361
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marty
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Joined: 10 May 2001
Posts: 789
PostPosted: Thu Feb 24, 2005 1:02 pm    Post subject: Reply with quote
Thanks mac and boo.

I added the Wait but its much too slow now...

Back to the drawing board Wink
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Mac
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Joined: 08 Jul 2000
Posts: 1585
Location: Oklahoma USA
PostPosted: Thu Feb 24, 2005 5:09 pm    Post subject: Reply with quote
Razz

What exactly are ya building? Might be another way to
get there from here... Wink

Cheers, Mac Smile
_________________
VDSug.dll does file IO, check/disable menu items,
non-VDS dlls, draw functions and more...
Free download (30k dll size) at:
http://www.vdsworld.com/download.php?id=361
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marty
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Joined: 10 May 2001
Posts: 789
PostPosted: Thu Feb 24, 2005 8:22 pm    Post subject: Reply with quote
I need a way to trap certain keys on the keyboard.


If you look at this thread, http://forum.vdsworld.com/viewtopic.php?t=3188
I tought I had it going, but to really catch what was typed I need to have a very short wait for the timer... Now if its too short the CPU usage rises and if its too slow, keys are missed.

And on some slower machines , Windows 98 PII 400, some keys are missed.

So I have no idea how to make this. I tried to make a delphi DLL, but that involves to implement a HOOK..

Smile
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Mac
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Joined: 08 Jul 2000
Posts: 1585
Location: Oklahoma USA
PostPosted: Thu Feb 24, 2005 10:46 pm    Post subject: Reply with quote
Actually a hook is prolly the only way you'll be 100% accurate
at catching keystrokes - each one passes thru the hook and
can't escape detection.

Otherwise there are too many variables - CPU speed, typematic
rates, number of apps the user has running, available resources,
etc.

An app using near 100% cpu usage certainly has a better chance
of catching them, but that's not really desirable either... Confused

Cheers, Mac Smile
_________________
VDSug.dll does file IO, check/disable menu items,
non-VDS dlls, draw functions and more...
Free download (30k dll size) at:
http://www.vdsworld.com/download.php?id=361
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