Virtual Keys - PB Win bombs

[dean goodman]

Is there a limit to the number of Virtual Keys that can be defined...In any event, in my program I am able to get PBwin bomb out of executing. I have never seen that happen before.

I have wired it down to number of virtual keys defined. I have it at 13/14 which seems to trigger PB Win to fail...Anyone else seen this behaviour...What might be wrong in my code?

Thanks for any help...

[Chris Holbrook]

What might be wrong in my code?

Difficult to say, as we have not seen it!

[Michael Mattias]

"Virtual key" not found in PB WIN 9.0.0 help file.

[dean goodman]

The error occurs in this sequence...If the last line is uncommented, then execution of PBwin terminates...

IF master$="Open GL Draw" THEN
DIM ac(15) AS ACCELAPI
ac(0).fvirt = %fvirtkey : ac(0).key = %vk_left : ac(0).cmd = %wm_user + %vk_left
ac(1).fvirt = %fvirtkey : ac(1).key = %vk_right : ac(1).cmd = %wm_user + %vk_right
ac(2).fvirt = %fvirtkey : ac(2).key = %vk_up : ac(2).cmd = %wm_user + %vk_up
ac(3).fvirt = %fvirtkey : ac(3).key = %vk_down : ac(3).cmd = %wm_user + %vk_down
ac(4).fvirt = %fvirtkey : ac(4).key = %vk_pgup : ac(4).cmd = %wm_user + %vk_pgup
ac(5).fvirt = %fvirtkey : ac(5).key = %vk_pgdn : ac(5).cmd = %wm_user + %vk_pgdn
ac(6).fvirt = %fvirtkey : ac(6).key = ASC(CHR$(72)) : ac(6).cmd = %wm_user +ASC(CHR$(72)) ' h key
ac(7).fvirt = %fvirtkey : ac(7).key = ASC(CHR$(76)) : ac(7).cmd = %wm_user +ASC(CHR$(76)) ' l key
ac(8).fvirt = %fvirtkey : ac(8).key = ASC(CHR$(87)) : ac(8).cmd = %wm_user +ASC(CHR$(87)) ' w key
ac(9).fvirt = %fvirtkey : ac(9).key = ASC(CHR$(71)) : ac(9).cmd = %wm_user +ASC(CHR$(71)) ' h key
ac(10).fvirt = %fvirtkey : ac(10).key = ASC(CHR$(75)) : ac(10).cmd = %wm_user +ASC(CHR$(75)) ' l key
ac(11).fvirt = %fvirtkey : ac(11).key = ASC(CHR$(81)) : ac(11).cmd = %wm_user +ASC(CHR$(81)) ' w key
ac(12).fvirt = %fvirtkey : ac(12).key = ASC(CHR$(82)) : ac(12).cmd = %wm_user +ASC(CHR$(82)) ' r key
' ac(13).fvirt = %fvirtkey : ac(13).key = ASC(CHR$(69)) : ac(13).cmd = %wm_user +ASC(CHR$(69)) ' e key
ACCEL ATTACH hDlggl3d, ac() TO result

END IF

[Gösta H. Lovgren-2]

The error occurs in this sequence...If the last line is uncommented, then execution of PBwin terminates...

Dean, it compiles fine here,

'

'PBWIN 9.00 - WinApi 05/2008 - XP Pro SP3
#Dim All 
#Compile Exe  
#Include "WIN32API.INC"
'
  Global hdlg As Dword                
  Global Dlg_Hght&, Dlg_Wdth&
'
Macro Common_Locals 'Macro easier than retyping and maintains coding consistency
  Local ctr&, ln&, ln1&, i&, s$
  Local hght&, wd&, Longest&, l$
  Local Row&, col&
End Macro  
'
CallBack Function Dialog_Processor
  Select Case CbMsg     'This is TO determine the message TYPE 
     '       
     Case %WM_INITDIALOG'<- Initialiaton when the program loads 
     '
     Case %WM_SYSCOMMAND 'Traps Any Alt key but only F4 closes              
     '
     Case %WM_COMMAND  'This processes command messages
       Select Case CbCtl
         'Case %Id_
           Select Case CbCtlMsg
           End Select
       End Select
  End Select
End Function
'
Function PBMain
  Dialog New Pixels, hdlg, "Demo", , , 400, 400, %WS_SYSMENU To hdlg  
' Local hDlggl3d As Dword
 Local s As String             
 Local result As Long
  
Dim ac(15) As ACCELAPI
ac(0).fvirt = %fvirtkey : ac(0).key = %vk_left : ac(0).cmd = %wm_user + %vk_left
ac(1).fvirt = %fvirtkey : ac(1).key = %vk_right : ac(1).cmd = %wm_user + %vk_right
ac(2).fvirt = %fvirtkey : ac(2).key = %vk_up : ac(2).cmd = %wm_user + %vk_up
ac(3).fvirt = %fvirtkey : ac(3).key = %vk_down : ac(3).cmd = %wm_user + %vk_down
ac(4).fvirt = %fvirtkey : ac(4).key = %vk_pgup : ac(4).cmd = %wm_user + %vk_pgup
ac(5).fvirt = %fvirtkey : ac(5).key = %vk_pgdn : ac(5).cmd = %wm_user + %vk_pgdn
ac(6).fvirt = %fvirtkey : ac(6).key = Asc(Chr$(72)) : ac(6).cmd = %wm_user +Asc(Chr$(72)) ' h key
ac(7).fvirt = %fvirtkey : ac(7).key = Asc(Chr$(76)) : ac(7).cmd = %wm_user +Asc(Chr$(76)) ' l key
ac(8).fvirt = %fvirtkey : ac(8).key = Asc(Chr$(87)) : ac(8).cmd = %wm_user +Asc(Chr$(87)) ' w key
ac(9).fvirt = %fvirtkey : ac(9).key = Asc(Chr$(71)) : ac(9).cmd = %wm_user +Asc(Chr$(71)) ' h key
ac(10).fvirt = %fvirtkey : ac(10).key = Asc(Chr$(75)) : ac(10).cmd = %wm_user +Asc(Chr$(75)) ' l key
ac(11).fvirt = %fvirtkey : ac(11).key = Asc(Chr$(81)) : ac(11).cmd = %wm_user +Asc(Chr$(81)) ' w key
ac(12).fvirt = %fvirtkey : ac(12).key = Asc(Chr$(82)) : ac(12).cmd = %wm_user +Asc(Chr$(82)) ' r key
 ac(13).fvirt = %fvirtkey : ac(13).key = Asc(Chr$(69)) : ac(13).cmd = %wm_user +Asc(Chr$(69)) ' e key
Accel Attach hDlg, ac() To result '<<<<<<< only changed handle name
  
     Dialog Show Modal hDlg   Call Dialog_Processor
End Function 'Applikation fursvhtunken
'

[Aslan Babakhanov]

Less code provided, so can't help for sure, but you can try these:

1. Move out the DIM ac() from if block and make it global. Redim it from 0 to 15 in initialization module.
2. Check you code where boundaries of ac() might be changed by thread/sub/function. Just check out the code for an ac() array
3. You forgot to say 'Debug' --- simply, debug your application

[Paul Dixon]

Dean,
have you checked the value of ERR after you DIM your array?

Paul.

[Michael Mattias]

Suggestions to test array bounds or ERR, or consider the effects of other threads of execution are not very useful until the program compiles.

I read the problem as "won't compile."

I have another way to get the compiler (pbwin.exe 9.0.0) to fail on a GPF if anyone needs it.

[Paul Dixon]

MCM,
I read the problem as "compiled application ceased running without reporting an error". We'll have to wait for clarification from Dean.

Paul.

[Gösta H. Lovgren-2]

Geez fellas. What Dean actually said was:

Is there a limit to the number of Virtual Keys that can be defined...

then later -

The error occurs in this sequence...If the last line is uncommented, then execution of PBwin terminates...

After which I compiled (and posted) his posted code without error, demostraing there is no inherent limit to the number of VK's allowed, or is at least more than 14.

==========================
"A small daily task,
if it be really daily,
will beat the labors
of a spasmodic Hercules."
Anthony Trollope (1815 - )
==========================

[dean goodman]

Sorry for the late response...

Taking the DIM statement out of the If block seems to solve the problem...that leads me to believe there is something else going on...but it is working now with no limit on the virtual keys...thx...

[Michael Mattias]

>Taking the DIM statement out of the If block seems to solve the problem

If that is a second (or third...) DIM statment for that array in that procedure, it is ignored. REDIM is always obeyed. If it's your application (versus pbwin.exe) which is terminating abnornally, that would explain it.

[Paul Dixon]

Dean,
are you accessing ac() elsewhere? If so, should the IF loop not be executed then ac() will not be dimmed and may be undefined so if you access ac() elsewhere then you'll be accessing undefined locations in memory which could cause your problem.

Paul.