Last updated: 18. 1.1998, 15:55
<* +M2EXTENSIONS *>
MODULE PopPad2;
(*-----------------------------------------------------
POPPAD2.C --- Popup Editor Version 2 (includes menu)
(c) Charles Petzold, 1996
PopPad2.mod --- Translation to XDS Modula-2
(c) Peter Stadler, 1997
-----------------------------------------------------*)
IMPORT Windows;
IMPORT h2d_poppad2;
IMPORT SYSTEM;
CONST
szAppName = "PopPad2";
szAppTitle = "PopPad2 : Translation to XDS Modula-2";
VAR
hAccel : Windows.HACCEL;
hwnd : Windows.HWND;
msg : Windows.MSG;
wc : Windows.WNDCLASSEX;
hwndEdit : Windows.HWND;
iSelect : INTEGER;
iEnable : Windows.MF_SET;
PROCEDURE AskConfirmation (hwnd : Windows.HWND) : INTEGER;
BEGIN
RETURN Windows.MessageBox (hwnd, "Really want to close PopPad2?",
szAppName, Windows.MB_YESNO + Windows.MB_ICONQUESTION);
END AskConfirmation;
(*++++*****************************************************************)
PROCEDURE [Windows.CALLBACK] WndProc (hwnd : Windows.HWND;
(**********************************************************************)
iMsg : Windows.UINT;
wParam : Windows.WPARAM;
lParam : Windows.LPARAM) : Windows.LRESULT;
VAR
bo : Windows.BOOL;
lr : Windows.LRESULT;
mf : Windows.MF_SET;
lpcr : Windows.PCREATESTRUCT;
BEGIN
CASE (iMsg) OF
| Windows.WM_CREATE :
lpcr := SYSTEM.CAST(Windows.PCREATESTRUCT,lParam);
hwndEdit := Windows.CreateWindow ("edit",
"",
Windows.WS_CHILD + Windows.WS_VISIBLE + Windows.WS_HSCROLL + Windows.WS_VSCROLL +
Windows.WS_BORDER + Windows.ES_LEFT + Windows.ES_MULTILINE +
Windows.ES_AUTOHSCROLL + Windows.ES_AUTOVSCROLL,
0,
0,
0,
0,
hwnd,
SYSTEM.CAST(Windows.HMENU,1),
(* statt
(SYSTEM.CAST(Windows.PCREATESTRUCT, lParam) ^. hInstance, NIL);
*)
lpcr^.hInstance,
NIL);
RETURN 0;
| Windows.WM_SETFOCUS :
Windows.SetFocus (hwndEdit);
RETURN 0;
| Windows.WM_SIZE :
Windows.MoveWindow (hwndEdit, 0, 0, Windows.LOWORD (lParam),
Windows.HIWORD (lParam), TRUE);
RETURN 0;
| Windows.WM_INITMENUPOPUP :
IF (lParam = 1) THEN
lr := Windows.SendMessage (hwndEdit, Windows.EM_CANUNDO, 0, 0);
IF(lr=1) THEN
mf := Windows.MF_ENABLED;
ELSIF(lr=0) THEN
mf := Windows.MF_GRAYED;
END;
Windows.EnableMenuItem (SYSTEM.CAST(Windows.HMENU,wParam), h2d_poppad2.IDM_UNDO,mf);
bo := Windows.IsClipboardFormatAvailable (Windows.CF_TEXT);
IF(bo=TRUE) THEN
mf := Windows.MF_ENABLED;
ELSE
mf := Windows.MF_GRAYED;
END;
Windows.EnableMenuItem (SYSTEM.CAST(Windows.HMENU,wParam), h2d_poppad2.IDM_PASTE,mf);
iSelect := Windows.SendMessage (hwndEdit, Windows.EM_GETSEL, 0, 0);
IF (Windows.HIWORD (iSelect) = Windows.LOWORD (iSelect)) THEN
iEnable := Windows.MF_GRAYED;
ELSE
iEnable := Windows.MF_ENABLED;
END;
Windows.EnableMenuItem (SYSTEM.CAST(Windows.HMENU,wParam), h2d_poppad2.IDM_CUT, iEnable);
Windows.EnableMenuItem (SYSTEM.CAST(Windows.HMENU,wParam), h2d_poppad2.IDM_COPY, iEnable);
Windows.EnableMenuItem (SYSTEM.CAST(Windows.HMENU,wParam), h2d_poppad2.IDM_DEL, iEnable);
RETURN 0;
END;
| Windows.WM_COMMAND :
IF (lParam=1) THEN
IF (Windows.LOWORD (lParam) = 1) AND
((Windows.HIWORD (wParam) = Windows.EN_ERRSPACE) OR (Windows.HIWORD (wParam) = Windows.EN_MAXTEXT)) THEN
Windows.MessageBox (hwnd, "Edit control out of space.",
szAppName, Windows.MB_OK + Windows.MB_ICONSTOP);
RETURN 0;
END;
ELSE
CASE (Windows.LOWORD (wParam)) OF
| h2d_poppad2.IDM_NEW :
| h2d_poppad2.IDM_OPEN :
| h2d_poppad2.IDM_SAVE :
| h2d_poppad2.IDM_SAVEAS :
| h2d_poppad2.IDM_PRINT :
Windows.MessageBeep (SYSTEM.CAST(Windows.MB_SET,0));
RETURN 0;
| h2d_poppad2.IDM_EXIT :
Windows.SendMessage (hwnd, Windows.WM_CLOSE, 0, 0);
RETURN 0;
| h2d_poppad2.IDM_UNDO :
Windows.SendMessage (hwndEdit, Windows.WM_UNDO, 0, 0);
RETURN 0;
| h2d_poppad2.IDM_CUT :
Windows.SendMessage (hwndEdit, Windows.WM_CUT, 0, 0);
RETURN 0;
| h2d_poppad2.IDM_COPY :
Windows.SendMessage (hwndEdit, Windows.WM_COPY, 0, 0);
RETURN 0;
| h2d_poppad2.IDM_PASTE :
Windows.SendMessage (hwndEdit, Windows.WM_PASTE, 0, 0);
RETURN 0;
| h2d_poppad2.IDM_DEL :
Windows.SendMessage (hwndEdit, Windows.WM_CLEAR, 0, 0);
RETURN 0;
| h2d_poppad2.IDM_SELALL :
Windows.SendMessage (hwndEdit, Windows.EM_SETSEL, 0,-1);
RETURN 0;
| h2d_poppad2.IDM_HELP :
Windows.MessageBox (hwnd, "Help not yet implemented!",
szAppName, Windows.MB_OK + Windows.MB_ICONEXCLAMATION);
RETURN 0;
| h2d_poppad2.IDM_ABOUT :
Windows.MessageBox (hwnd,
"POPPAD2 (c) Charles Petzold, 1996, Translation to XDS Modula-2 (c) Peter Stadler, 1997",
szAppName, Windows.MB_OK + Windows.MB_ICONINFORMATION);
RETURN 0;
ELSE
RETURN 0;
END;
END;
| Windows.WM_CLOSE :
IF (Windows.IDYES = AskConfirmation (hwnd)) THEN
Windows.DestroyWindow (hwnd);
END;
RETURN 0;
| Windows.WM_QUERYENDSESSION :
IF (Windows.IDYES = AskConfirmation (hwnd)) THEN
RETURN 1;
ELSE
RETURN 0;
END;
| Windows.WM_DESTROY :
Windows.PostQuitMessage (0);
RETURN 0;
ELSE
RETURN Windows.DefWindowProc (hwnd, iMsg, wParam, lParam);
END;
RETURN Windows.DefWindowProc (hwnd, iMsg, wParam, lParam);
END WndProc;
(*++++*****************************************************************)
PROCEDURE InitApplication () : BOOLEAN;
(**********************************************************************)
BEGIN
wc.cbSize := SIZE(wc);
wc.style := Windows.CS_HREDRAW + Windows.CS_VREDRAW;
wc.lpfnWndProc := WndProc;
wc.cbClsExtra := 0;
wc.cbWndExtra := 0;
wc.hInstance := Windows.MyInstance();
wc.hIcon := Windows.LoadIcon (Windows.MyInstance(), szAppName);
wc.hCursor := Windows.LoadCursor (NIL, Windows.IDC_ARROW);
wc.hbrBackground := SYSTEM.CAST(Windows.HBRUSH, Windows.GetStockObject (Windows.WHITE_BRUSH));
wc.lpszMenuName := SYSTEM.ADR(szAppName);
wc.lpszClassName := SYSTEM.ADR(szAppName);
wc.hIconSm := Windows.LoadIcon (NIL,Windows.IDI_APPLICATION);
RETURN Windows.RegisterClassEx(wc)#0;
END InitApplication;
(*++++*****************************************************************)
PROCEDURE InitMainWindow () : BOOLEAN;
(**********************************************************************)
BEGIN
hwnd := Windows.CreateWindow (
szAppName, (* window class name *)
szAppTitle, (* window caption *)
Windows.WS_OVERLAPPEDWINDOW, (* window style *)
Windows.GetSystemMetrics (Windows.SM_CXSCREEN) / 4,
Windows.GetSystemMetrics (Windows.SM_CYSCREEN) / 4,
Windows.GetSystemMetrics (Windows.SM_CXSCREEN) / 2,
Windows.GetSystemMetrics (Windows.SM_CYSCREEN) / 2,
NIL, (* parent window handle *)
NIL, (* window menu handle *)
wc.hInstance, (* program instance handle *)
NIL); (* creation parameters *)
IF hwnd = NIL THEN
RETURN FALSE;
END;
Windows.ShowWindow (hwnd, Windows.SW_SHOWDEFAULT);
Windows.UpdateWindow (hwnd);
hAccel := Windows.LoadAccelerators (wc.hInstance, szAppName);
RETURN TRUE;
END InitMainWindow;
BEGIN
IF InitApplication() AND InitMainWindow() THEN
WHILE (Windows.GetMessage(msg,NIL,0,0)) DO
IF (Windows.TranslateAccelerator (hwnd, hAccel, msg)=FALSE) THEN
Windows.TranslateMessage(msg);
Windows.DispatchMessage(msg);
END;
END;
END;
END PopPad2.