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NSKEVAL.EXE
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CRAWL.INC
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1992-11-17
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Comment
==========================================================
This section allows for a screen crawl on the bottom line of the screen.
It reads a file and displays it over and over.
If TODAY.TXT doesn't exist then no crawl will be displayed.
Blank lines in the TODAY.TXT file cause * * * to appear.
==========================================================
EndComment
;----- Background Tasking
var
CrawlFile = 'TODAY.TXT' ;name of the file you want to display
CrawlDelay = 30 ;seconds to wait to start
ThisLine
NextLine
LinePtr
OldTimer
Crawl
;----- Setup
OldTimer = Timer
if IdleProgram = nil
IdleProgram = Loc CrawlTask
endif
;----- Procedures
Procedure FillLine
while length(ThisLine) < (ScreenWidth - 2)
if NextLine = ''
NextLine = Crawl[LinePtr]
LinePtr = LinePtr + 1
if NextLine = ''
NextLine = '* * * '
else
NextLine = NextLine + ' '
endif
endif
ThisLine = ThisLine + Left(NextLine,1)
delete(NextLine,1,1)
endwhile
EndProc
Procedure CrawlTask
var X
; if Hour = 1
;this is where you can start something at 1:00 in the morning
; endif
while not KbdReady and (Timer - OldTimer < (CrawlDelay * 18))
EndWhile
OldTimer = Timer
if KbdReady then Return
ThisLine = ' * * * * * * * * * * '
LinePtr = 1
NextLine = ''
;----- Read the text file.
if NumberOfElements(Crawl) = 0
CrawlFile = ExistOnPath(CrawlFile)
if CrawlFile = ''
IdleProgram = Nil
Return
endif
ReadTextFile (CrawlFile,Crawl)
if Crawl[NumberOfElements(Crawl)] > ''
AppendArray(Crawl,'')
endif
AppendArray(Crawl,'###')
AppendArray(Crawl,'')
endif
SetTopWindow StatusWindow
while not KbdReady
if LinePtr > NumberOfElements(Crawl) then LinePtr = 1
FillLine
X = Timer
if (X mod 2 = 0) and (X <> OldTimer)
GotoXY 2 1
Write ThisLine
delete(ThisLine,1,1)
OldTimer = X
endif
endwhile
ClearScreen
WriteCenter StatusLineText
SetWindowUnder (StatusWindow,StatusWindow + 1)
OldTimer = Timer
EndProc