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alangr
Joined: 24 Oct 2016 Posts: 47 Location: Oxford,UK and Athens, Greece
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Posted: Mon Jan 09, 2023 5:41 pm Post subject: text colour printing to screen |
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I am doing some very simple text handling and want to have a choice of colours with the results put on screen. In FTN77, I used COUP@ and this still works with FTN95 although I cannot find any reference to in in the User Notes and I have not been able to get the blinking aspect to work.
How should I put a character to the screen with a specified colour; and is it possible to make it blink?
Thanks. _________________ Alan |
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PaulLaidler Site Admin
Joined: 21 Feb 2005 Posts: 8012 Location: Salford, UK
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Posted: Mon Jan 09, 2023 7:58 pm Post subject: |
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Alan
I am guessing that you are writing to a DOS box. Perhaps you could post a short sample program that illustrates what you can do at the moment.
Writing coloured text in a Windows application is quite simple using ClearWin+ but text that blinks may be more tricky.
The lack of documentation for COUP@ etc. simply reflects the fact that such routines have become outmoded. |
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alangr
Joined: 24 Oct 2016 Posts: 47 Location: Oxford,UK and Athens, Greece
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Posted: Tue Jan 10, 2023 10:21 am Post subject: |
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Paul
I am writing to the screen from DOS but not formally a 'DOS box'. Essentially I am doing what I had done in FTN77. As an example this is intended to provide an alternating green/red character on screen. When I run this code step by step all is well. when I just run it the screen remains blank until about 15 seconds has passed and execution stops.
DO 10 K=1,15
COLR=2
CALL COUP@(TILE, COLR, IV, IH)
CALL SLEEP@(1)
COLR=4
CALL COUP@(TILE, COLR, IV, IH)
10 CONTINUE
If I had set one of the two COUP@ calls to colour black, I was hoping to make the character on screen blink slowly.
I quite understand the fact that the COUP@ is now outmoded but wish to do something like this using FTN95.
I have not used ClearWin+ yet; is this my way forward?
Sorry, coming to this from the past. _________________ Alan |
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PaulLaidler Site Admin
Joined: 21 Feb 2005 Posts: 8012 Location: Salford, UK
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Posted: Tue Jan 10, 2023 1:00 pm Post subject: |
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Alan
I was asking for a short working program that one could run without modification.
Maybe it would then be possible to transcribe this into ClearWin+ to get you started. |
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alangr
Joined: 24 Oct 2016 Posts: 47 Location: Oxford,UK and Athens, Greece
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Posted: Tue Jan 10, 2023 4:08 pm Post subject: |
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Paul
Here is the body of a program that works to produce a character alternating from green to red. With SDBG stepping through gives the desired effect. Running the program (F6) just gives a blank screen until the loop is complete.
PROGRAM TEST
*
INTEGER*2 K, IH, IV, COLR
CHARACTER TILE*1
*
CALL CLEAR_SCREEN@
*
TILE=CHAR(35)
IH=5
IV=7
*
DO 10 K=1,15
COLR=2
*
CALL COUP@(TILE, COLR, IH, IV)
CALL SLEEP@(1)
*
COLR=4
CALL COUP@(TILE, COLR, IH, IV)
*
CALL SLEEP@(1)
10 CONTINUE
*
STOP
*
END
I would welcome your comments of moving this to ClearWin+
Thanks _________________ Alan |
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PaulLaidler Site Admin
Joined: 21 Feb 2005 Posts: 8012 Location: Salford, UK
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Posted: Tue Jan 10, 2023 8:46 pm Post subject: |
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Here is a sample program that uses %tx to create the equivalent of a DOS box with coloured text. If it is relevant then I can think about how to make part of the text blink. It is also possible to write coloured text using %eb.
Code: | winapp
program main
integer,parameter::NCOLS=80,NROWS=25,NCHRS=NCOLS*NROWS
character text(NCOLS,NROWS),attr(NCOLS,NROWS)
character(len=NCHRS) txt
equivalence(text,txt)
txt = " "
attr = char(0)
txt(1 :80) = "First line"
txt(81 :160) = "Second line"
txt(161:240) = "Third line"
attr(:,1) = char(1) !Attribute index for row 1
attr(:,2) = char(2) !Attribute index for row 2
attr(:,3) = char(3) !Attribute index for row 3
iw = winio@('%80.25tx&',text,attr,NCOLS,NROWS)
iw = winio@('%tc[blue]%ty[white]&') !Text colour and back colour for index 1
iw = winio@('%tc[red]%ty[white]&') !Text colour and back colour for index 2
iw = winio@('%tc[white]%ty[black]') !Text colour and back colour for index 3
end program |
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alangr
Joined: 24 Oct 2016 Posts: 47 Location: Oxford,UK and Athens, Greece
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Posted: Wed Jan 11, 2023 8:15 am Post subject: |
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Thank you for your response.
I will see what I can do working from your example. I think the flashing aspect is not a priority right now.
Thank you for your help. _________________ Alan |
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PaulLaidler Site Admin
Joined: 21 Feb 2005 Posts: 8012 Location: Salford, UK
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Posted: Wed Jan 11, 2023 9:55 am Post subject: |
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Here is a better sample for writing coloured text to a DOS box array of characters. Readers should note that writing text to a window is normally very simple as in iw = winio@("Hello World").
Code: | winapp
module txmod
use clrwin
integer,parameter::NCOLS=80,NROWS=25
character(len=NCOLS)::lines(NROWS),attr(NROWS)
integer ctrl
contains
integer function dialog()
integer i
do i = 1,NROWS
attr(i) = repeat(char(0),NCOLS)
lines(i) = " "
end do
iw = winio@('%pv%*.*tx&',NCOLS,NROWS,lines,attr,NCOLS,NROWS)
iw = winio@('%tc[#0000ff]%ty[#ffffff]&') !char(1)
iw = winio@('%tc[#ff0000]%ty[#ffffff]&') !char(2)
iw = winio@('%tc[#ffffff]%ty[#000000]&') !char(3)
iw = winio@('%lw',ctrl)
dialog = iw
end function
subroutine WriteLine(lineNo, attrNo, str)
integer lineNo, attrNo
character(*) str
lines(lineNo) = str
attr(lineNo) = repeat(char(attrNo),NCOLS)
end subroutine
end module txmod
program main
use txmod
iw = dialog()
call WriteLine(1, 2, "First line")
call WriteLine(2, 3, "Second line")
call WriteLine(3, 1, "Third line")
call window_update@(lines)
end program |
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