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Property sheets - captions

 
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wahorger



Joined: 13 Oct 2014
Posts: 825
Location: Morrison, CO, USA

PostPosted: Wed Oct 14, 2020 6:13 pm    Post subject: Property sheets - captions Reply with quote

There is a difference in how the captions are displayed on Property Sheet tabs when they are provided explicitly, or supplied as a character string. The following code demonstrates this

Code:

   winapp
        program main
   integer propsheet(3) ! handle to the property sheet
        integer ii
        character*13:: caption='   caption   '
        ii = winio@('%sh%ca[   caption   ]sheet 1',propsheet(1))
        ii = winio@('%sh%ca@Sheet 2',propsheet(2),caption)
        ii = winio@('%2ps[ms_style,hot_track]',propsheet(1),propsheet(2))
        end


The first sheet will have the caption displayed with all the characters; that is, the spaces present before and after the text are displayed. The second sheet using a character variable does not have the trailing spaces displayed.

While this is perhaps a minor issue, because captions are used to identify the tabs, it is not possible to do an equivalent of "centering" by supplying spaces before and after the caption. I could dynamically build the caption in a local character string, then have winio@() execute it, but now brackets that I use in captions cannot be displayed. So, I am stuck...

Bill
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John-Silver



Joined: 30 Jul 2013
Posts: 1451
Location: Aerospace Valley

PostPosted: Wed Oct 14, 2020 6:56 pm    Post subject: Reply with quote

Bill,
have you tried a call to windos_uodate@ as described in the 'description' ?

https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-setwindowtexta

you could also try the 'second method' mentioned there too
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wahorger



Joined: 13 Oct 2014
Posts: 825
Location: Morrison, CO, USA

PostPosted: Wed Oct 14, 2020 9:51 pm    Post subject: Reply with quote

John, I may be mistaken about this, but it is likely that when winio@() processes the variable, it trims the spaces off of the back. That is why they are different. When I set a caption for a window, this does not happen. How can I tell? Because if I make the variable 250 characters in length, I'll get a really wide window displayed.

A property sheet, while having some windows properties, is a different animal.

Bill
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LitusSaxonicum



Joined: 23 Aug 2005
Posts: 2180
Location: Yateley, Hants, UK

PostPosted: Wed Oct 14, 2020 10:10 pm    Post subject: Reply with quote

Bill,

Sometimes you can get the trailing space characters to show if you replace n blanks with n-1 and a full stop (period to you). It's not all that obvious to most users. Eventually you may find out the real way to do it, but in the meantime you have a workaround!

Eddie
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PaulLaidler
Site Admin


Joined: 21 Feb 2005
Posts: 6568
Location: Salford, UK

PostPosted: Thu Oct 15, 2020 8:19 am    Post subject: Reply with quote

When using the @ system, trailing spaces are indeed removed.

Character number 127 in the ASCII table (named DEL) can be used as an alternative to a space (32). In the Microsoft "Character Map" dialog this is call a "no-break space".

You can copy and paste this in Plato. It's not UNICODE and you don't need UTF8.

You only need to change the final character to a no-break space.
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John-Silver



Joined: 30 Jul 2013
Posts: 1451
Location: Aerospace Valley

PostPosted: Thu Oct 15, 2020 8:19 pm    Post subject: Reply with quote

it would be really excellent to have an option to directly justify, either left, CENTRE or right the specified title across the available field width.

One that of course automatically modifies when the window is re-sized for example.
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wahorger



Joined: 13 Oct 2014
Posts: 825
Location: Morrison, CO, USA

PostPosted: Sun Oct 18, 2020 6:47 pm    Post subject: Reply with quote

Paul, great news that there is a workaround that I can also make "transparent".

Thanks very much for your detective work.

Bill
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wahorger



Joined: 13 Oct 2014
Posts: 825
Location: Morrison, CO, USA

PostPosted: Tue Oct 20, 2020 12:48 am    Post subject: Reply with quote

This leaves a vertical bar on the right hand side of my captions.

However, using char(128+32) (basically a "space" with the high order bit set) does the job!

Bill


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PaulLaidler
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Joined: 21 Feb 2005
Posts: 6568
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PostPosted: Tue Oct 20, 2020 8:47 am    Post subject: Reply with quote

Bill

The outcome will depend on the font being used.
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wahorger



Joined: 13 Oct 2014
Posts: 825
Location: Morrison, CO, USA

PostPosted: Tue Oct 20, 2020 3:51 pm    Post subject: Reply with quote

Noted. Thanks for this comment.

Bill
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