Re: Object-oriented preprocessor
- Posted by jmduro Sep 16, 2022
- 1286 views
Now I will adapt the demo\win32 examples of OEU. This will be in another thread when available and could be a basis for a new win32lib_r2.oex.
As the preprocessor leaves translated files in place, users will have to versions available: OOP style and translated version.
The preprocessor has still a lot of bugs but the translated version of the windows demo works. It is available here: http://jean-marc.duro.pagesperso-orange.fr/window_demo.zip
I don't see the benefits of programming in such a way. It has roughly the same number of lines of code than the original.
Maybe if the whole win32lib replacement was written it could be different. Than, the demo would be:
include new_win32lib.ew include classes.e -- callback routine to handle Window class function WndProc(atom hwnd, atom iMsg, atom wParam, atom lParam) atom wav_file = allocate_string(getenv("windir")&`\Media\tada.wav`), Euphoria = allocate_string("A Plain Vanilla Window using Euphoria!"), ps = allocate(64), rect = allocate(16) if iMsg = WM_CREATE then c_proc(PlaySound, {wav_file, NULL, or_bits(SND_FILENAME, SND_ASYNC)}) return 0 elsif iMsg = WM_PAINT then atom hdc = c_func(BeginPaint, {hwnd, ps}) c_proc(GetClientRect, {hwnd, rect}) c_proc(DrawText, {hdc, Euphoria, -1, rect, or_all({DT_SINGLELINE, DT_CENTER, DT_VCENTER})}) c_proc(EndPaint, {hwnd, ps}) return 0 elsif iMsg = WM_DESTROY then c_proc(PostQuitMessage, {0}) return 0 end if return c_func(DefWindowProc, {hwnd, iMsg, wParam, lParam}) end function integer mainWin = classes:new("mainWin", TWindow) callMethod(mainWin, "create", {"MLE Test", 0, 0, 0, 300, 300, 0, routine_id("WndProc")}) WinMain()
It is such a tremendous work that it will probably not be achieved.
Jean-Marc
