Hello everyone. What about passing complex c-types (structures) to c-functions. More detailed: I have an application in production which was written in Delphi. IT has ability to create pluggable modules to it. Interface realized by sending Win32Api messages to application. function in haskell Win32 Graphics.Win32.sendMessage :: HWND -> WyidowMessage-> WPARAM -> LPARAM -> IO RESULT Application wants to get different data in WPARAM and LPARAM. Such as window descriptor (HWND), string pointers and datastructer pointers. The latter i don't know how to create. I need anyones experience.
On 13/11/09 05:31, Vasiliy G. Stavenko wrote:
Hello everyone.
What about passing complex c-types (structures) to c-functions.
More detailed: I have an application in production which was written in Delphi. IT has ability to create pluggable modules to it. Interface realized by sending Win32Api messages to application.
function in haskell Win32 Graphics.Win32.sendMessage :: HWND -> WyidowMessage-> WPARAM -> LPARAM -> IO RESULT
Application wants to get different data in WPARAM and LPARAM. Such as window descriptor (HWND), string pointers and datastructer pointers. The latter i don't know how to create.
I need anyones experience.
Possibly this old post of mine can help: http://therning.org/magnus/archives/315 /M -- Magnus Therning (OpenPGP: 0xAB4DFBA4) magnus＠therning．org Jabber: magnus＠therning．org http://therning.org/magnus identi.ca|twitter: magthe
I need anyones experience.
Possibly this old post of mine can help: http://therning.org/magnus/archives/315
Oh... WHile i was trying to repeat after you, it's become clear to me that this is not actually what I want. I want to create some structure, say data WM = WM {some_info :: Ptr CChar} create pointer for it type LPWM = Ptr WM and, when i need to convert it to something Int (or UINT) I found in Graphics.Win32 function castPtrToUINT :: Ptr a -> UINT So my question now is: would the structure defined in haskell as written in http://therning.org/magnus/archives/315, which pointer i will send to another C-function? be restored properly? Or maybe there's another function? which allows to do so?
participants (2)
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Magnus Therning -
Vasiliy G. Stavenko