I am getting illegal storage access when trying to compile and run the plot.nim program.

nim c -r plot.nim
Hint: used config file '/home/nixfreak/.choosenim/toolchains/nim-1.6.2/config/nim.cfg' [Conf]
Hint: used config file '/home/nixfreak/.choosenim/toolchains/nim-1.6.2/config/config.nims' [Conf]
Hint: gc: refc; opt: none (DEBUG BUILD, -d:release generates faster code)
9878 lines; 0.035s; 8.652MiB peakmem; proj: /home/nixfreak/nim/gui/niup/nixfreak_fork/niupc/plot.nim; out: /home/nixfreak/nim/gui/niup/nixfreak_fork/niupc/plot [SuccessX]
Hint: /home/nixfreak/nim/gui/niup/nixfreak_fork/niupc/plot [Exec]
Traceback (most recent call last)
/home/nixfreak/nim/gui/niup/nixfreak_fork/niupc/plot.nim(597) plot
/home/nixfreak/nim/gui/niup/nixfreak_fork/niupc/plot.nim(591) mainProc
/home/nixfreak/nim/gui/niup/nixfreak_fork/niupc/plot.nim(584) PlotTest
SIGSEGV: Illegal storage access. (Attempt to read from nil?)
Error: execution of an external program failed: '/home/nixfreak/nim/gui/niup/nixfreak_fork/niupc/plot '

I'm probably wrong about this I get errors compiling the majority of the niupc examples.
Example "tree.nim" https://github.com/dariolah/nim-iup-examples/blob/master/niupc/tree.nim the code states.

import niup
import niupext
Shouldn't it be

import niup/niupc
import niup/niupext

Same with the webbrowser.nim example

import niup
import niupext
Shouldn't it be

import niup/niupc
import niup/niupext

If this is correct I could do pull request to help out , I really like this project. Thanks again.

Versions:
niup #head
Nim 1.6.0
IUP 3.30

I want to try how a GetParam works. I took an example of GetParam usage from nim-iup-examples from example4_*.nim.
A minimal example

# simple_params.nim
import niup/niupc
import niup/niupext

proc show_params(ih: PIhandle): int =
  var
    width: int = 10
    height: int = 20

  if GetParam("Page Setup", nil, nil, "Width: %i\nHeight: %i\n", width, height, nil) != 0:
    discard

  return IUP_DEFAULT

proc mainProc =
  niupext.Open()

  when defined(Linux):
    SetGlobal("UTF8MODE", "YES")

  var button = Button("Params", nil)
  SetCallback(button, "ACTION", show_params)

  var dlg = Dialog(button)
  SetAttribute(dlg, "TITLE", "simple_params")
  SetAttribute(dlg, "SIZE", "HALFxHALF")

  ShowXY(dlg, IUP_CENTER, IUP_CENTER)

  MainLoop()
  Close()

if isMainModule:
  mainProc()

Run

nim c -r simple_params.nim

Next I click on the button and get a traceback

Traceback (most recent call last)
.../simple_params.nim(33) simple_params
.../simple_params.nim(29) mainProc
.../simple_params.nim(9) show_params
SIGSEGV: Illegal storage access. (Attempt to read from nil?)
Segmentation fault (core dumped)
Error: execution of an external program failed: '.../simple_params '

What could be the problem?

Trying to re-create tempConvert.c using niup library

I get errors trying to SetAtrribute
`ot <Text_t, string, string>
but expected one of:
proc SetAttribute(ih: PIhandle; name: cstring; value: cstring)
first type mismatch at position: 1
required type for ih: PIhandle
but expression 'textLabel_c' is of type: Text_t

expression: SetAttribute(textLabel_c, "value", "")
In the example do you have to SetStrf to convert to a string? or do I need to parseString? `

import std/[httpclient, strutils, strformat]
import niup
#import TempFormula

var
  label_c: Label_t
  label_f: Label_t
  textLabel_c: Text_t
  textLabel_f: Text_t
  celsius: float
  fahrenheit: float

proc txt_celcius_cb(ih: PIhandle):cint {.cdecl.} =
  var fahrenheit = GetDialogChild(ih, "Fahrenheit")
  var value = (celsius * 1.8) + 32
  return IUP_DEFAULT



proc txt_fahrenheit_cb(ih: PIhandle):cint {.cdecl.} =
  var celcius = GetDialogChild(ih, "Celcius")
  var value = (fahrenheit - 32) / 1.8

  return IUP_DEFAULT


#proc button_show_ip(ih: PIhandle): cint {.cdecl.} = # every callback has cint as return value
#textLabel.value = Ip()
  #return IUP_DEFAULT

# create main proc and open UIP application
proc mainProc =
  Open()

# create 2 labels and 2 textLabels
  #textLabel_f.value =
  label_c = Label("Celcius  " & " = ")
  textLabel_c = Text("")
  SetAttribute(textLabel_c, "value", "")
  SetAttribute(textLabel_c, "NAME", "Celcius")
  textLabel_c.alignment = IUP_ACENTER

  label_f  = Label("Fahrenheit")
  SetAttribute(textLabel_f, "value", "")
  SetAttribute(textLabel_f, "NAME", "Fahrenheit")
  textLabel_f = Text("")
  textLabel_f.alignment = IUP_ACENTER

  var
     hbox = Hbox(textLabel_c, label_c, textLabel_f, label_f)

  hbox.alignment = IUP_ACENTER
  hbox.gap(20)
  hbox.margin(20, 20)
# add dialog box to show title of UIP application

  var dlg_h = Dialog(hbox)
  dlg_h.title = "Convert Temperature"
  dlg_h.bgcolor = "#7f11e0"

# call backs
  SetCallback(textLabel_c, "VALUECHANGED_CB",  (Icallback(txt_celcius_cb)))
  SetCallback(textLabel_f, "VALUECHANGED_CB",  (Icallback(txt_fahrenheit_cb)))
# show UIP application
  #ShowXY(dlg, IUP_CENTER, IUP_CENTER)
  ShowXY(dlg_h , IUP_CENTER, IUP_CENTER)

  MainLoop()
  Close()

if isMainModule: # if main module than call mainProc()
  mainProc()

I tried to compile & run example2_1.nim using the following command:
nim compile --run example2_1.nim
But it fails with error: could not load: libiup.dylib

I just installed nim with brew install nim and niup nimble install niup, so the packages should all be up to date. Any ideas why this is happening? Let me know if you need any additional info.

Trying to figure out what to use for an output, do I use a dialog box or show or something else?

I would like to create a box with a button that shows your own IP address. Also opacity works great I was able to use opacity on a full window.

Could you please sync all examples with the latest release version of niup?

Traceback (most recent call last)
/home/nixfreak/nim/gui/niup/nixfreak_fork/niupc/example4_2.nim(733) example4_2
/home/nixfreak/nim/gui/niup/nixfreak_fork/niupc/example4_2.nim(718) mainProc
SIGSEGV: Illegal storage access. (Attempt to read from nil?)
Error: execution of an external program failed: '/home/nixfreak/nim/gui/niup/nixfreak_fork/niupc/example4_2 '

After changing everything over to use the niupc library and niupext.

I'm sure this is pretty messed up but , I am not understanding the callbacks I guess.
Also setting the attributes is probably wrong. It compiles just fine but no callbacks work.

import std/[httpclient, strutils, strformat]
import niup
#import TempFormula

var
  label_c: Label_t
  label_f: Label_t
  textLabel_c: Text_t
  textLabel_f: Text_t


proc txt_celcius_cb(ih: PIhandle):cint {.cdecl.} =
  var fahrenheit = GetDialogChild("Fahrenheit")
  var value = float(value * (1.8) + 32)
   return IUP_DEFAULT



proc txt_fahrenheit_cb(ih: PIhandle):cint {.cdecl.} =
  var celcius = GetDialogChild("Celcius")

   return IUP_DEFAULT


#proc button_show_ip(ih: PIhandle): cint {.cdecl.} = # every callback has cint as return value
#textLabel.value = Ip()
  #return IUP_DEFAULT

# create main proc and open UIP application
proc mainProc =
  Open()

# create 2 labels and 2 textLabels
  textLabel_f.value =
  label_c = Label("Celcius  " & " = ")
  SetAttribute(textLabel_c, "VALUE", "")
  SetAttribute(textLabel_c, "NAME", "Celcius")
  textLabel_c = Text("")
  textLabel_c.alignment = IUP_ACENTER

  label_f  = Label("Fahrenheit")
  SetAttribute(textLabel_f, "VALUE", "")
  SetAttribute(textLabel_f, "NAME", "Fahrenheit")
  textLabel_f = Text("")
  textLabel_f.alignment = IUP_ACENTER

  var
     hbox = Hbox(textLabel_c, label_c, "=" ,textLabel_f, label_f)

  hbox.alignment = IUP_ACENTER
  hbox.gap(20)
  hbox.margin(20, 20)
# add dialog box to show title of UIP application

  var dlg_h = Dialog(hbox)
  dlg_h.title = "Convert Temperature"
  dlg_h.bgcolor = "#7f11e0"

# call backs
  SetCallback(textLabel_c, "VALUECHANGED_CB",  (ICallback(txt_celcius_cb)))
  SetCallback(textLabel_f, "VALUECHANGED_CB",  (ICallback(txt_fahrenheit_cb)))
# show UIP application
  #ShowXY(dlg, IUP_CENTER, IUP_CENTER)
  ShowXY(dlg_h , IUP_CENTER, IUP_CENTER)

  MainLoop()
  Close()

if isMainModule: # if main module than call mainProc()
  mainProc()

hello, I tried to compile the first example in Emacs but it failed with the following message:

nim c -r --app:gui example2_1.nim
nim c -r --app:gui example2_1.nim
Hint: used config file 'C:\nim-0.19.2\config\nim.cfg' [Conf]
Hint: system [Processing]
Hint: widestrs [Processing]
Hint: io [Processing]
Hint: example2_1 [Processing]
Hint: niup [Processing]
CC: stdlib_system.nim
CC: ../../../../../../C:/Users/Neil/.nimble/pkgs/niup-3.27.2/niup.nim
CC: example2_1.nim
Error: execution of an external compiler program 'C:\MinGW\mingw64\bin\gcc.exe -c -w -mno-ms-bitfields -IC:\nim-0.19.2\lib -I"c:\Users\Neil\Documents\Nim Files\nim-iup-examples-master" -o C:\Users\Neil\nimcache\example2_1_d_7_7_7_7_7_7C87Users7Neil7.nimble7pkgs7niup-3.277.27niup.nim.c.o C:\Users\Neil\nimcache\example2_1_d_7_7_7_7_7_7C87Users7Neil7.nimble7pkgs7niup-3.277.27niup.nim.c' failed with exit code: 1

C:\Users\Neil\nimcache\example2_1_d_7_7_7_7_7_7C87Users7Neil7.nimble7pkgs7niup-3.277.27niup.nim.c:38:10: fatal error: dlfcn.h: No such file or directory
#include <dlfcn.h>
^~~~~~~~~
compilation terminated.

I am able to compile the modules dependent on 'iupcontrols.dll', however, during execution, I get the message that the DLL could not be loaded. Any advice? Thank you.