How to fix (RubyInstaller::Runtime::DllDirectory::WinApiError) in ruby on windows? - ruby

Question

while Implementing ruby2d in the code i get this error
It's a strange runtime issue
Ruby2d Code
require 'ruby2d'
# Set the window size
set width: 300, height: 200
# Create a new shape
s = Square.new
# Give it some color
s.color = 'red'
# Show the window
show
Error
8: from R.rb:1:in `<main>'
7: from C:/Ruby25-x64/lib/ruby/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:39:in `require'
6: from C:/Ruby25-x64/lib/ruby/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:135:in `rescue in require'
5: from C:/Ruby25-x64/lib/ruby/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:135:in `require'
4: from C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/ruby2d-0.5.1/lib/ruby2d.rb:28:in `<top (required)>'
3: from C:/Ruby25-x64/lib/ruby/site_ruby/2.5.0/ruby_installer/runtime/singleton.rb:12:in `add_dll_directory'
2: from C:/Ruby25-x64/lib/ruby/site_ruby/2.5.0/ruby_installer/runtime/singleton.rb:12:in `new'
1: from C:/Ruby25-x64/lib/ruby/site_ruby/2.5.0/ruby_installer/runtime/dll_directory.rb:50:in `initialize'
*C:/Ruby25-
x64/lib/ruby/site_ruby/2.5.0/ruby_installer/runtime/dll_directory.rb:83:in
`add_dll_directory_winapi': AddDllDirectory failed for
C:/Users/Salim/usr/local/bin
(RubyInstaller::Runtime::DllDirectory::WinApiError)*
Please Help me to fix

Answer 1

You have to run your project from the MINGW 64-bit command prompt. Not from the regular DOS prompt (Windows Command Prompt).
Make sure you follow the instructions here:
http://www.ruby2d.com/learn/windows/
Note the last paragraph:
Using Ruby 2D on Windows
When working with Ruby 2D, make sure to use a MinGW 64-bit command prompt, rather than a standard one (cmd.exe) or the “Start Command Prompt with Ruby” found in the Start menu.

Answer 2

Fixed this issue by creating usr/local/bin folders in the C/users/username directory
and pasted the dlls required which can ne found on Link for dll
extract it and copy the dll from bin and paste in the new bin directory that you have created .
Imp- usr/local/bin was my default dll-load directory i hope its the same for others too but please check the error message properly.