wxhaskell-users — General mailing list for wxhaskell users

Re: [wxhaskell-users] Getting the selected text of a textCtrl

[Henk-Jan v. T. <hj...@ch...>]

On Tue, 03 Mar 2009 20:49:39 +0100, Eric <er...@ma...> wrote:

> How may I obtain the selected text of a textCtrl?
>

Like this:
   textInput <- textCtrl f []
   inputText <- WXCore.textCtrlGetValue textInput

A lot of things to do with a textCtrl can be found at:
   https://svn.cs.uu.nl:12443/repos/hint/trunk/hint-wxHaskell-unfinished/TextCtrlConsole.hs

-- 
Regards,
Henk-Jan van Tuyl


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[wxhaskell-users] Multilingual window clears on resizing

[Henk-Jan v. T. <hj...@ch...>]

L.S.,

The attached program can display English and Dutch text, depending on the  
button pressed; the title switches as well. However, the static text in  
the window dissappears when I resize the window. Is this a bug in  
wxHaskell/wxWidgets?

How can I create a proper wxHaskell GUI with selectable language?

-- 
Regards,
Henk-Jan van Tuyl


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--

[wxhaskell-users] Getting the selected text of a textCtrl

[Eric <er...@ma...>]

Dear all,

How may I obtain the selected text of a textCtrl?

Eric M.

[wxhaskell-users] relative merits of wxHaskell and gtk2hs

[Eric K. <eri...@gm...>]

http://stackoverflow.com/questions/553317/what-are-the-relative-merits-of-wxhaskell-and-gtk2hs

BTW: maybe if some wxhaskell hackers could make it to the Hackathon in
Utrecht (17-19 April), you could work with Duncan on the ongoing
Cabalisation of wxcore (right now our Cabal file is just a wrapper
around our hand-written 'configure' shell script and Makefile)

-- 
Eric Kow <http://www.nltg.brighton.ac.uk/home/Eric.Kow>
PGP Key ID: 08AC04F9

Re: [wxhaskell-users] Segmentation fault

[Henk-Jan v. T. <hj...@ch...>]

On Fri, 20 Feb 2009 00:17:05 +0100, Eric <er...@ma...> wrote:

> Dear all,
>
> When I run the following program I get a "Segmentation fault/access
> violation". Can anyone see the problem?
>
> ***
>
> main = start gui
>
>
> gui = do{
>     f <- frame [text := ""]
>     ;book <- notebook f []
>     ;page <- new_page f
>     ;set f [layout := tabs book [page]]
>     ;set f [position := pt 0 0, clientSize := sz 900 700]
>     ;return()}
>
>
> new_page :: Window a -> IO TabPage
> new_page wnd = do
>     txt_gui <- textCtrl wnd []
>     pnl <- panel wnd []
>     empty_bitmap <- bitmapCreateEmpty (sz 1 1) 1
>     let tab_page = ("Blank", empty_bitmap, container pnl (fill . widget
> $ txt_gui))
>     return tab_page
>
> ***
>
> Eric M.

The GHCi debugger [1] shows that the crash occurs while evaluating the  
line:
>     ;set f [layout := tabs book [page]]

The description of "tabs" contains the phrase:
   The pages always need to be embedded inside a container

See the file samples\wx\Controls.hs of the wxHaskell package for an  
example how to use a notebook.

[1]  
http://www.haskell.org/ghc/docs/latest/html/users_guide/ghci-debugger.html

-- 
Regards,
Henk-Jan van Tuyl


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[wxhaskell-users] Segmentation fault

[Eric <er...@ma...>]

Dear all,

When I run the following program I get a "Segmentation fault/access 
violation". Can anyone see the problem?

***

main = start gui


gui = do{
    f <- frame [text := ""]
    ;book <- notebook f []
    ;page <- new_page f
    ;set f [layout := tabs book [page]]
    ;set f [position := pt 0 0, clientSize := sz 900 700]
    ;return()}


new_page :: Window a -> IO TabPage
new_page wnd = do
    txt_gui <- textCtrl wnd []
    pnl <- panel wnd []
    empty_bitmap <- bitmapCreateEmpty (sz 1 1) 1
    let tab_page = ("Blank", empty_bitmap, container pnl (fill . widget 
$ txt_gui))
    return tab_page

***

Eric M.

[wxhaskell-users] SVG

[Ben C. <bmc...@gm...>]

Hi there,

I'm interested in using vector graphics for a GUI in wxHaskell, and I was
wondering whether anyone could suggest the best way to go about it. I
noticed some limited support for writing vector graphics to an SVG file, but
that's about it. Has anyone here, used wxHaskell to display SVG files?

Many thanks

Ben Collier

[wxhaskell-users] Can't load .so/.DLL for: wxc-msw2.8.9-0.11.0

[José P. M. <jp...@cs...>]

Hello all,

After installing wxhaskell (from
wxhaskell-bin-msw2.8.9-ghc6.10.1-0.11.0-0.zip) on my machine (Windows XP
64-bit edition), I get the following when running the examples:

GHCi, version 6.10.1: http://www.haskell.org/ghc/  :? for help
> Loading package ghc-prim ... linking ... done.
> Loading package integer ... linking ... done.
> Loading package base ... linking ... done.
> [1 of 1] Compiling Main             (
> C:\Temp\wxhaskell-0.11.0\samples\wx\HelloWorld.hs, interpreted )
> Ok, modules loaded: Main.
> *Main> main
> Loading package syb ... linking ... done.
> Loading package array-0.2.0.0 ... linking ... done.
> Loading package containers-0.2.0.0 ... linking ... done.
> Loading package bytestring-0.9.1.4 ... linking ... done.
> Loading package old-locale-1.0.0.1 ... linking ... done.
> Loading package old-time-1.0.0.1 ... linking ... done.
> Loading package filepath-1.1.0.1 ... linking ... done.
> Loading package Win32-2.2.0.0 ... linking ... done.
> Loading package directory-1.0.0.2 ... linking ... done.
> Loading package stm-2.1.1.2 ... linking ... done.
> Loading package process-1.0.1.1 ... linking ... done.
> Loading package random-1.0.0.1 ... linking ... done.
> Loading package haskell98 ... linking ... done.
> Loading package wxcore-0.11.0 ... <interactive>: wxc-msw2.8.9-0.11.0: The
> specified module could not be found.
> can't load .so/.DLL for: wxc-msw2.8.9-0.11.0 (addDLL: could not load DLL)
> *Main>
>

Compiling with ghc --make produces a similar error in a popup when trying to
run the application. Following
http://haskell.org/haskellwiki/WxHaskell/Troubleshooting#Runtime_issues, I
am posting the issue to this list.

Any ideas?


Thanks,
Pedro

Re: [wxhaskell-users] Creating a TabPage

[Eric <er...@ma...>]

Arne Vogel wrote:
> to answer the first question: You can use, for instance, bitmap,
> bitmapCreateFromFile or bitmapFromImage (all Graphics.UI.WX.Media).
>
> bitmap returns Bitmap () while bitmapCreateFromFile returns IO  
> (Bitmap ()).
> I guess what this means is that bitmap does not require the IO monad but
> you have little control over when it's executed. So bitmap should  
> probably
> only be used if the file doesn't change over the lifetime of the
> application instance.
>   
Thanks for the info.
> To answer the second question: Maybe you could create an empty image.
>   
How do I do that?

Eric

Re: [wxhaskell-users] Creating a TabPage

[Arne V. <ar...@me...>]

> Hi all,
>
> In order to create a value of type TabPage, I need to create a  
> value of
> type Bitmap. But how do I create such a value and what if I don't want
> to because I do not need my tabs to have images?
>
> Eric M

Hello,

to answer the first question: You can use, for instance, bitmap,
bitmapCreateFromFile or bitmapFromImage (all Graphics.UI.WX.Media).

bitmap returns Bitmap () while bitmapCreateFromFile returns IO  
(Bitmap ()).
I guess what this means is that bitmap does not require the IO monad but
you have little control over when it's executed. So bitmap should  
probably
only be used if the file doesn't change over the lifetime of the
application instance.

To answer the second question: Maybe you could create an empty image.

Regards,
Arne Vogel

[wxhaskell-users] Creating a TabPage

[Eric <er...@ma...>]

Hi all,

In order to create a value of type TabPage, I need to create a value of 
type Bitmap. But how do I create such a value and what if I don't want 
to because I do not need my tabs to have images?

Eric M

Re: [wxhaskell-users] Size of an entry field

[G?uenther S. <re...@fe...>]

Hi Henk Jan,

I've found out by now what works:

    static $ minsize (sz 40 (-1)) $ widget

Günther


Henk-Jan van Tuyl schrieb:
> On Sun, 15 Feb 2009 00:31:11 +0100, Günther Schmidt 
> <re...@fe...> wrote:
>
>> Hi,
>>
>> how can I set the visible size of an entry field?
>> In pixels or in characters.
>>
>> Günther
>
> At 
> http://hackage.haskell.org/packages/archive/wx/0.10.2/doc/html/Graphics-UI-WX-Controls.html#5 
> I see that the text entry widgets have Dimensions in their list of 
> instances; one of the methods of Dimensions will probably do it.
>

Re: [wxhaskell-users] Size of an entry field

[Henk-Jan v. T. <hj...@ch...>]

On Sun, 15 Feb 2009 00:31:11 +0100, Günther Schmidt <re...@fe...>  
wrote:

> Hi,
>
> how can I set the visible size of an entry field?
> In pixels or in characters.
>
> Günther

At  
http://hackage.haskell.org/packages/archive/wx/0.10.2/doc/html/Graphics-UI-WX-Controls.html#5  
I see that the text entry widgets have Dimensions in their list of  
instances; one of the methods of Dimensions will probably do it.

-- 
Met vriendelijke groet,
Henk-Jan van Tuyl


--
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http://Van.Tuyl.eu/
--

Re: [wxhaskell-users] cabal install insists on reinstalling wxcore

[Henk-Jan v. T. <hj...@ch...>]

On Sat, 14 Feb 2009 11:36:51 +0100, Eric Kow <eri...@gm...> wrote:

> So I've got this program GenI
>
>   darcs get http://code.haskell.org/GenI
>
> If I try to cabal install it:
>
>   cd libGenI; cabal install; cd ..;
>   cd GenI;    cabal install; cd ..
>
> cabal-install tries to install wxcore even though it already is
> installed (and in my user package database, for what it's worth)
>
> Has anybody else run into this kind of problem?  Is this something we've
> already dealt with?
>


I have had the same after the command:
   cabal install --global wxFruit
after downloading Yampa, wxCore was "installed" again (it actually  
failed), the same version as already installed.

Regards,
Henk-Jan van Tuyl


--
http://functor.bamikanarie.com
http://Van.Tuyl.eu/
--


-- 

[wxhaskell-users] Size of an entry field

[Günther S. <re...@fe...>]

Hi,

how can I set the visible size of an entry field?
In pixels or in characters.

Günther

[wxhaskell-users] cabal install insists on reinstalling wxcore

[Eric K. <eri...@gm...>]

So I've got this program GenI

  darcs get http://code.haskell.org/GenI

If I try to cabal install it:

  cd libGenI; cabal install; cd ..;
  cd GenI;    cabal install; cd ..

cabal-install tries to install wxcore even though it already is
installed (and in my user package database, for what it's worth)

Has anybody else run into this kind of problem?  Is this something we've
already dealt with?

For now the solution seems to be for me to install GenI by hand (sigh)

I realise it may be a cabal-install issue, and the wxHaskell build instructions
mention some problems in the cabal-install dependency tracking.  Do we have
anything more specific?  Bug numbers?  Is this something I should be mailing
the cabal-install folks about?

Thanks!

Eric

PS: cabal-install --dry-run output below

-----------------8<--------------------------------------------

$ cabal install --dry-run -v

/usr/local/bin/ghc --numeric-version
looking for package tool: ghc-pkg near compiler in /usr/local/bin
found package tool in /usr/local/bin/ghc-pkg
/usr/local/bin/ghc-pkg --version
/usr/local/bin/ghc --supported-languages
Reading installed packages...
/usr/local/bin/ghc-pkg dump --global
/usr/local/bin/ghc-pkg dump --user
Reading available packages...
Resolving dependencies...
selecting GenI-0.17.1 (hackage) and discarding QuickCheck-1.0, 1.1.0.0, 2.1,
2.1.0.1, filepath-1.0, parsec-2.0, 3.0.0, wx-0.10.1 and 0.10.2
selecting QuickCheck-1.2.0.0 (installed or hackage)
selecting wx-0.11.0 (installed or hackage) and discarding wx-0.10.3, 0.10.4,
0.10.5, 0.10.6, wxcore-0.10.1, 0.10.2 and 0.10.3
selecting wxcore-0.11.0 (installed or hackage) and discarding wxcore-0.10.4,
0.10.5, 0.10.6, 0.10.7, 0.10.8, 0.10.9, 0.10.10, 0.10.11, 0.10.12 and 0.10.13
selecting time-1.1.2.2 (installed or hackage) and discarding time-1.0,
1.1.2.0, 1.1.2.1 and 1.1.2.3
selecting stm-2.1.1.2 (installed or hackage) and discarding stm-2.1 and
2.1.1.0
selecting libGenI-0.17.1 (installed) and discarding HUnit-1.1, 1.2.0.0,
1.2.0.1, 1.2.0.2, 1.2.0.3, QuickCheck-1.2.0.0, array-0.1.0.0, 0.2.0.0,
binary-0.2, 0.3, 0.4, 0.4.1, 0.4.2, 0.4.3, 0.4.3.1, 0.4.4, bytestring-0.9,
0.9.0.1, 0.9.0.2, 0.9.0.3, 0.9.0.4, 0.9.1.0, 0.9.1.1, 0.9.1.2, 0.9.1.3,
0.9.1.4, containers-0.1.0.0, 0.1.0.1, 0.2.0.0, directory-1.0.0.0,
filepath-1.1.0.0, 1.1.0.1, libGenI-0.16, 0.16.1, mtl-1.0, 1.1.0.0, 1.1.0.1,
1.1.0.2, old-locale-1.0.0.0, 1.0.0.1, old-time-1.0.0.0, parsec-2.1.0.0,
2.1.0.1, process-1.0.0.0, 1.0.1.0, 1.0.1.1, random-1.0.0.0, 1.0.0.1,
syb-0.1.0.0, unix-2.0, 2.2.0.0, 2.3.0.0 and 2.3.1.0
selecting HUnit-1.2.0.3 (installed)
selecting array-0.2.0.0 (installed)
selecting binary-0.4.4 (installed)
selecting bytestring-0.9.1.4 (installed)
selecting containers-0.2.0.0 (installed)
selecting directory-1.0.0.2 (installed)
selecting filepath-1.1.0.1 (installed)
selecting ghc-prim-0.1.0.0 (installed)
selecting integer-0.1.0.0 (installed)
selecting mtl-1.1.0.2 (installed)
selecting old-locale-1.0.0.1 (installed)
selecting old-time-1.0.0.1 (installed)
selecting parsec-2.1.0.1 (installed)
selecting process-1.0.1.1 (installed)
selecting random-1.0.0.1 (installed)
selecting rts-1.0 (installed)
selecting syb-0.1.0.0 (installed)
selecting unix-2.3.1.0 (installed)
selecting base-3.0.3.0 (installed) and 4.0.0.0 (installed)
In order, the following would be installed:
wxcore-0.11.0 (reinstall) changes: array-0.2.0.0 added, directory-1.0.0.2
added, haskell98-1.0.1.0 removed, old-time-1.0.0.1 added, parsec-2.1.0.1
added, time-1.1.2.2 added
wx-0.11.0 (reinstall)
GenI-0.17.1 (new package)


-- 
Eric Kow <http://www.nltg.brighton.ac.uk/home/Eric.Kow>
PGP Key ID: 08AC04F9

[wxhaskell-users] Trying to size a window

[Eric <er...@ma...>]

Dear all,

I have written the following code to display a top level window with 
width and height 1000 :

gui = do
    f <- frame [size := Size 1000 1000]
    return()

When i run the program, however, the window appears larger for a second, 
and then returns to te default, smaller size. Anyone know what's going on?

Eric M.

[wxhaskell-users] "Controls" and "Print" examples not working

[Chris C. <chr...@gm...>]

Hi all,

It seems the darcs version solves the problem I reported last week
(see the "GTK initialization failure" thread).  Thanks, whoever fixed
this.

Now I am experimenting with some of the different examples in the
samples/wx directory.  Most of them work fine.  However, Controls.hs
segfaults immediately, and Print.hs segfaults if I try to use any of
the print options from the menu.

Unfortunately, I'm completely new to wxwidgets and wxhaskell, so even
locating specific parts of these files that might be to blame has been
a problem.  Can any one else confirm (or refute) this behavior?
Anyone know what might be causing it?

Thanks for your help!

--Chris Casinghino

Re: [wxhaskell-users] getAbsoluteFilePath, getApplicationDir, getApplicationPath, neither working?!

[G?uenther S. <re...@fe...>]

Hallo Henk-Jan,

moi weer van jou te hooren.

Well actually none of the below solutions does give me the result I 
need, but this does:

    System.Win32.getModuleFileName nullPtr

That was given to me by jeffz on irc and made me want to marry him :-)

It works quite nicely, and really solves the problem of finding files 
relative to exes dir when the exe is not called from the directory it's in.

Haartelik bedankt,

Günther


Henk-Jan van Tuyl schrieb:
> On Mon, 02 Feb 2009 22:35:44 +0100, Günther Schmidt 
> <re...@fe...> wrote:
>
>> Hi,
>>
>> none of the above functions seem to be working, how can I then find 
>> where
>> the exe is? Copyfile is not very reliable when I pass it relative paths.
>>
>> Günther
>>
>
>   currentDirectory  <- System.Directory.getCurrentDirectory
>
> Convert the relative path to an absolute path with:
>   canonicalizedPath <- System.Directory.canonicalizePath ".."
>
> There is also System.Directory.findExecutable to find an executable by 
> name, in the search path, but this is not a reliable way to find your 
> application.
>

Re: [wxhaskell-users] getAbsoluteFilePath, getApplicationDir, getApplicationPath, neither working?!

[Henk-Jan v. T. <hj...@ch...>]

On Mon, 02 Feb 2009 22:35:44 +0100, Günther Schmidt <re...@fe...>  
wrote:

> Hi,
>
> none of the above functions seem to be working, how can I then find where
> the exe is? Copyfile is not very reliable when I pass it relative paths.
>
> Günther
>

   currentDirectory  <- System.Directory.getCurrentDirectory

Convert the relative path to an absolute path with:
   canonicalizedPath <- System.Directory.canonicalizePath ".."

There is also System.Directory.findExecutable to find an executable by  
name, in the search path, but this is not a reliable way to find your  
application.

-- 
Met vriendelijke groet,
Henk-Jan van Tuyl


--
http://functor.bamikanarie.com
http://Van.Tuyl.eu/
--

[wxhaskell-users] getAbsoluteFilePath, getApplicationDir, getApplicationPath, neither working?!

[Günther S. <re...@fe...>]

Hi,

none of the above functions seem to be working, how can I then find where  
the exe is? Copyfile is not very reliable when I pass it relative paths.

Günther

[wxhaskell-users] Enhancement request (was: Exact fit of picture in bitmapButton)

[Henk-Jan v. T. <hj...@ch...>]

On Sat, 10 Jan 2009 23:57:00 +0100, Henk-Jan van Tuyl <hj...@ch...>  
wrote:

>
> L.S.,
>
> I created a bitmapButton as follows:
>
>>   ok <- bitmapButton f [ on command := close f, picture :=  
>> "button62.gif", text := "Ok" ]
>
> The picture is not shown in full; how can I get this correct? I found  
> out that wxPython has wx.BU_EXACTFIT to make the button exactly the size  
> of the image; is there anything like that in wxHaskell?
>

I have found that wxHaskell defines wxBU_EXACTFIT, but I have found no way  
to use it. A way get an exact fit is:

>   bitmapSize <- WXCore.withBitmapFromFile "button63.gif"  
> WXCore.bitmapGetSize
>   bmb <- bitmapButton f [ on command := close f
>                         , picture    := "button63.gif"
>                         , outerSize  := bitmapSize
>                         ]

My suggestion is, that a new attribute is defined for bitmapButton:
   exactFit :: Attr w Bool
When this is set to true, the size of the button should be set to the size  
of the image.

With this new attribute, the above code would become:

>   bmb <- bitmapButton f [ on command := close f
>                         , picture    := "button63.gif"
>                         , exactFit   := True
>                         ]

-- 
Regards,
Henk-Jan van Tuyl


--
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http://Van.Tuyl.eu/
--

Re: [wxhaskell-users] GTK initialization failure

[Chris C. <chr...@gm...>]

I have the same problem as these two.  I am running ubuntu 8.10.  To answer
Mads Lindstrom's question, ubuntu says I have version 2.13.4-0ubuntu1 of
libgtk2.0 and libgtk2.0-dev.  I also have libgtk1.2 installed (though not
the dev files).

I have been able to successfully run this hello world tutorial program from
the wxwidgets website:

http://www.wxwidgets.org/docs/tutorials/hworld.txt

So, I think the problem is not with wxwidgets itself.

--Chris Casinghino


> I am having the same problem (see my earlier e-mails on the list) on Ubuntu
>
> with both wxGTK 2.8.9 and 2.8.7. Unfortunately noone has replied to my
> previous e-mail yet.
>
> On Saturday 10 January 2009 21:53:14 Kellen J. McClain wrote:
> > I'm running Fedora 10, and installed wxGTK with "yum", (version 2.8.9),
> > and have successfully compiled wxhaskell-0.11.0 (using --with-opengl
> > --with-contrib --with-mediactrl --wx-toolkit=gtk2), but whenever I run
> > any of the sample programs, no windows pop up, and the same error
> > occurs:
> >
> > (process:16395): GLib-GObject-CRITICAL **: gtype.c:2458: initialization
> > assertion failed, use IA__g_type_init() prior to this function
> >
> > (process:16395): GLib-CRITICAL **: g_once_init_leave: assertion
> > `initialization_value != 0' failed
> >
> > (process:16395): Gdk-CRITICAL **: gdk_cursor_new_for_display: assertion
> > `GDK_IS_DISPLAY (display)' failed
> >
> > I tried running a sample program written in C++ and it ran fine, so I'm
> > thinking that it is a problem with something in wxhaskell. I noticed
> > that Jose Ramirez in 2008-08-12 came across the same problem
> > (
> http://sourceforge.net/mailarchive/message.php?msg_name=89c11d70808120559j
> >63465383r1c61f4c11a46d47c%40mail.gmail.com). Did anyone figure out what
> the
> > problem was?

[wxhaskell-users] XP-Themes

[Günther S. <re...@fe...>]

Hi,

I'm using xsHaskell on Win XP.

How can I make it use the XP-Theme instead of the Win2k theme?

Günther

Re: [wxhaskell-users] Bitmap buttons - samples pls

[Günther S. <re...@fe...>]

Hi Henk-Jan,

thanks, I can see how your code would work.

Funny me but I had thought the methods

bitmapButtonSetBitmapSelected
bitmapButtonSetBitmapLabel
bitmapButtonSetBitmapDisabled		
bitmapButtonSetBitmapFocus

were implemented and would handle the switching of images themselves, once  
the images were set.

But since you also handle this manually I guess that's just the way to do  
it then.


Hartelike groetjes naar Nederlands en tot de volgende keer  :)

Günther