Could not load: iupcontrols.dll

[OxeStone]

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.

[dariolah]

A guessing game:

• iupcontrols.dll is in PATH, e.g. same directory as .exe?
• iupcontrols.dll is same version, 32/64 bit, as .exe?
• iupcontrols.dll is compiled with same compiler as .exe? GCC/Mingw or VCC
  $ file iupcontrols.dll
iupcontrols.dll: PE32+ executable (DLL) (console) x86-64, for MS Windows

[OxeStone]

Thank you for the quick response. I omitted to mention the issue when I try to run 'matrix.nim' and 'plot.nim'. I had checked the above suggestions before posting. It turns IUP DLLs need other DLLs not included in the IUP zip file such as 'cd.dll', 'cdgl.dll' etc. Now I get the following message when running 'plot.nim'
could not import: cdCanvasFont
I am using MinGW compiler and libraries.
Cheers!

[OxeStone]

Update: I tried all 36 examples under NIUPC. All work except 'plot' and 'webbrowser'. Different errors.
plot: could not import: cdCanvasFont
webbrowser: (no errors warnings or messages).
Thank you!

[dariolah]

There are more libraries needed, see...
https://www.tecgraf.puc-rio.br/iup/en/download_tips.html

This is list of DLLs I'm using for testing ...

cdcontextplus.dll
cddirect2d.dll
cd.dll
cdgl.dll
cdim.dll
cdpdf.dll
freetype6.dll
ftgl.dll
iupcd.dll
iupcontrols.dll
iup.dll
iupglcontrols.dll
iupgl.dll
iupim.dll
iupimglib.dll
iup_mglplot.dll
iupole.dll
iup_plot.dll
iup_scintilla.dll
iuptuio.dll
pdflib.dll
zlib1.dll

Additional for mingw cross compiling, probably you don't need them

boehmgc64.dll
libgcc_s_seh-1.dll
libstdc++-6.dll
libwinpthread-1.dll

[OxeStone]

I have the same DLLs in the first list in my 'IUP' directory
I don't have 'boehmgc64.dll'
I have 'libgcc_s_sjlj-1.dll' instead of 'libgcc_s_seh-1.dll' (same)
I have 'libstdc++-6.dll' and 'libwinpthread-1.dll'

I use VS Code and the 'nim' extension. How do you compile and run 'plot.nim'?

[dariolah]

Same as all other examples, nothing special about it. See niupc\Makefile
It's been a while since I've run it, only tested compiling it.

I've tried now plot and I have broken install of IUP on Linux, libCD specifically :D

When I try windows build I get error about importing function:
could not import: cdCanvasFont

Add this option to compile command: -d:nimDebugDlOpen

Or you can try to run it with procmon, maybe it will show you why it fails.:
https://docs.microsoft.com/en-us/sysinternals/downloads/procmon

cd.dll has symbol cdCanvasFont no idea why it is not loading it. When I'll have more time I'll try with C example then work out Nim version.

[dariolah]

Small update, plot example works on Linux as is. Still no clue why Win version, cross compiled + wine, fails