Ruby DL callback function for a windowProc

ruby-talk
1

I am trying to create a window class with ruby dl so I can create my
own window but I'm stuck on the wndproc. here is what I have so far
but it doesn't work.
I can get it to work if I use one of the standard window classes like
Button but if I do that then I dont have control over the wndproc which
seems to be getting the messages I am trying to recieve.

There is more to the code I just cut out the parts with the problem.
module Win32
  extend DL::Importable
  dlload 'user32.dll' , 'kernel32.dll'
WNDCLASSEX = struct [
    "UINT cbSize",
    "UINT style",
    "void* lpfnWndProc",
    "int cbClsExtra",
    "int cbWndExtra",
    "UINT hInstance1",
    "UINT hIcon",
    "UINT hCursor",
    "UINT hbrBackground",
    "LPCSTR lpszMenuName",
    "LPCSTR lpszClassName",
    "UINT hIconSm"

  ]

def my_proc(hwnd,uMsg,wParam,lParam)
    puts "TEST"
end

MY_PROC = callback 'UINT my_proc(HWND,UINT,WPARAM,LPARAM)'
end

#this is the line that the program stops on.
wndclass.lpfnWndProc = Win32::MY_PROC

this is the error
type mismatch
(eval):16:in `[]='

2

awertyui@gmail.com wrote:

#this is the line that the program stops on.
wndclass.lpfnWndProc = Win32::MY_PROC

Create an PtrData object using to_ptr() and assign it to lpfnWndProc as follows.
     wndclass.lpfnWndProc = Win32::MY_PROC.to_ptr()

Regards,

···

--
Takaaki Tateishi <ttate@ttsky.net>

3

awertyui@gmail.com wrote:

#this is the line that the program stops on.
wndclass.lpfnWndProc = Win32::MY_PROC

Create an PtrData object using to_ptr() and assign it to lpfnWndProc as follows.
     wndclass.lpfnWndProc = Win32::MY_PROC.to_ptr()

Regards,

···

--
Takaaki Tateishi <ttate@ttsky.net>