Last updated: 18. 1.1998, 15:43
<* +M2EXTENSIONS *> MODULE MenuDemo; (*----------------------------------------- MENUDEMO.C --- Menu Demonstration (c) Charles Petzold, 1996 MenuDemo.mod --- Translation to XDS Modula-2 (c) Peter Stadler, 1997 -----------------------------------------*) IMPORT h2d_MenuDemo; IMPORT Windows; IMPORT SYSTEM; CONST szAppName = "MenuDemo"; VAR hwnd : Windows.HWND; msg : Windows.MSG; wc : Windows.WNDCLASSEX; TYPE Color = Windows.STOCK_ENUM; ColorArr = ARRAY[0..4] OF Color; CONST (* static in WndProc *) iColorID = ColorArr { Windows.WHITE_BRUSH, Windows.LTGRAY_BRUSH, Windows.GRAY_BRUSH, Windows.DKGRAY_BRUSH, Windows.BLACK_BRUSH }; VAR iSelection : INTEGER; (*++++*****************************************************************) PROCEDURE [Windows.CALLBACK] WndProc (hwnd : Windows.HWND; iMsg : Windows.UINT; wParam : Windows.WPARAM; lParam : Windows.LPARAM) : Windows.LRESULT; (**********************************************************************) VAR hMenu : Windows.HMENU; BEGIN CASE (iMsg) OF | Windows.WM_COMMAND : hMenu := Windows.GetMenu (hwnd); CASE (Windows.LOWORD (wParam)) OF | h2d_MenuDemo.IDM_NEW : Windows.MessageBeep (SYSTEM.CAST(Windows.MB_SET,0)); RETURN 0; | h2d_MenuDemo.IDM_OPEN : Windows.MessageBeep (SYSTEM.CAST(Windows.MB_SET,0)); RETURN 0; | h2d_MenuDemo.IDM_SAVE : Windows.MessageBeep (SYSTEM.CAST(Windows.MB_SET,0)); RETURN 0; | h2d_MenuDemo.IDM_SAVEAS : Windows.MessageBeep (SYSTEM.CAST(Windows.MB_SET,0)); RETURN 0; | h2d_MenuDemo.IDM_EXIT : Windows.SendMessage (hwnd, Windows.WM_CLOSE, 0, 00000h); RETURN 0; | h2d_MenuDemo.IDM_UNDO : Windows.MessageBeep (SYSTEM.CAST(Windows.MB_SET,0)); RETURN 0; | h2d_MenuDemo.IDM_CUT : Windows.MessageBeep (SYSTEM.CAST(Windows.MB_SET,0)); RETURN 0; | h2d_MenuDemo.IDM_COPY : Windows.MessageBeep (SYSTEM.CAST(Windows.MB_SET,0)); RETURN 0; | h2d_MenuDemo.IDM_PASTE : Windows.MessageBeep (SYSTEM.CAST(Windows.MB_SET,0)); RETURN 0; | h2d_MenuDemo.IDM_DEL : Windows.MessageBeep (SYSTEM.CAST(Windows.MB_SET,0)); RETURN 0; | h2d_MenuDemo.IDM_WHITE : (* Note: Logic below *) Windows.CheckMenuItem (hMenu, iSelection, Windows.MF_UNCHECKED); iSelection := Windows.LOWORD (wParam); Windows.CheckMenuItem (hMenu, iSelection, Windows.MF_CHECKED); Windows.SetClassLong (hwnd, Windows.GCL_HBRBACKGROUND, SYSTEM.CAST(Windows.LONG,Windows.GetStockObject(iColorID[Windows.LOWORD (wParam) - h2d_MenuDemo.IDM_WHITE]))); Windows.InvalidateRect (hwnd, NIL, TRUE); RETURN 0; | h2d_MenuDemo.IDM_LTGRAY : (* assumes that IDM_WHITE *) Windows.CheckMenuItem (hMenu, iSelection, Windows.MF_UNCHECKED); iSelection := Windows.LOWORD (wParam); Windows.CheckMenuItem (hMenu, iSelection, Windows.MF_CHECKED); Windows.SetClassLong (hwnd, Windows.GCL_HBRBACKGROUND, SYSTEM.CAST(Windows.LONG,Windows.GetStockObject(iColorID[Windows.LOWORD (wParam) - h2d_MenuDemo.IDM_WHITE]))); Windows.InvalidateRect (hwnd, NIL, TRUE); RETURN 0; | h2d_MenuDemo.IDM_GRAY : (* through IDM_BLACK are *) Windows.CheckMenuItem (hMenu, iSelection, Windows.MF_UNCHECKED); iSelection := Windows.LOWORD (wParam); Windows.CheckMenuItem (hMenu, iSelection, Windows.MF_CHECKED); Windows.SetClassLong (hwnd, Windows.GCL_HBRBACKGROUND, SYSTEM.CAST(Windows.LONG,Windows.GetStockObject(iColorID[Windows.LOWORD (wParam) - h2d_MenuDemo.IDM_WHITE]))); Windows.InvalidateRect (hwnd, NIL, TRUE); RETURN 0; | h2d_MenuDemo.IDM_DKGRAY : (* consecutive numbers in *) Windows.CheckMenuItem (hMenu, iSelection, Windows.MF_UNCHECKED); iSelection := Windows.LOWORD (wParam); Windows.CheckMenuItem (hMenu, iSelection, Windows.MF_CHECKED); Windows.SetClassLong (hwnd, Windows.GCL_HBRBACKGROUND, SYSTEM.CAST(Windows.LONG,Windows.GetStockObject(iColorID[Windows.LOWORD (wParam) - h2d_MenuDemo.IDM_WHITE]))); Windows.InvalidateRect (hwnd, NIL, TRUE); RETURN 0; | h2d_MenuDemo.IDM_BLACK : (* the order shown here. *) Windows.CheckMenuItem (hMenu, iSelection, Windows.MF_UNCHECKED); iSelection := Windows.LOWORD (wParam); Windows.CheckMenuItem (hMenu, iSelection, Windows.MF_CHECKED); Windows.SetClassLong (hwnd, Windows.GCL_HBRBACKGROUND, SYSTEM.CAST(Windows.LONG,Windows.GetStockObject(iColorID[Windows.LOWORD (wParam) - h2d_MenuDemo.IDM_WHITE]))); Windows.InvalidateRect (hwnd, NIL, TRUE); RETURN 0; | h2d_MenuDemo.IDM_START : IF (Windows.SetTimer (hwnd, 1, 1000, NIL)=1) THEN Windows.EnableMenuItem (hMenu, h2d_MenuDemo.IDM_START, Windows.MF_GRAYED); Windows.EnableMenuItem (hMenu, h2d_MenuDemo.IDM_STOP, Windows.MF_ENABLED); END; RETURN 0; | h2d_MenuDemo.IDM_STOP : Windows.KillTimer (hwnd, 1); Windows.EnableMenuItem (hMenu, h2d_MenuDemo.IDM_START, Windows.MF_ENABLED); Windows.EnableMenuItem (hMenu, h2d_MenuDemo.IDM_STOP, Windows.MF_GRAYED); RETURN 0; | h2d_MenuDemo.IDM_HELP : Windows.MessageBox (hwnd, "Help not yet implemented!", szAppName, Windows.MB_ICONEXCLAMATION + Windows.MB_OK); RETURN 0; | h2d_MenuDemo.IDM_ABOUT : Windows.MessageBox (hwnd, "Menu Demonstration Program.", szAppName, Windows.MB_ICONINFORMATION + Windows.MB_OK); RETURN 0; ELSE RETURN 0; END; | Windows.WM_TIMER : Windows.MessageBeep (SYSTEM.CAST(Windows.MB_SET,0)); RETURN 0; | Windows.WM_DESTROY : Windows.PostQuitMessage (0); RETURN 0; ELSE RETURN Windows.DefWindowProc (hwnd, iMsg, wParam, lParam); END; END WndProc; (*++++*****************************************************************) PROCEDURE InitApplication () : BOOLEAN; (**********************************************************************) BEGIN wc.cbSize := SIZE(Windows.WNDCLASSEX); 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 (NIL, Windows.IDI_APPLICATION); 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 *) "Menu Demonstration, Translation to XDS Modula-2", (* window caption *) Windows.WS_OVERLAPPEDWINDOW, (* window style *) Windows.CW_USEDEFAULT, (* initial x position *) Windows.CW_USEDEFAULT, (* initial y position *) Windows.CW_USEDEFAULT, (* initial x size *) Windows.CW_USEDEFAULT, (* initial y size *) NIL, (* parent window handle *) NIL, (* window menu handle *) Windows.MyInstance(), (* program instance handle *) NIL); (* creation parameters *) IF hwnd = NIL THEN RETURN FALSE; END; Windows.ShowWindow (hwnd, Windows.SW_SHOWDEFAULT); Windows.UpdateWindow (hwnd); RETURN TRUE; END InitMainWindow; (*++++*****************************************************************) BEGIN iSelection := h2d_MenuDemo.IDM_WHITE; IF InitApplication() AND InitMainWindow() THEN WHILE (Windows.GetMessage(msg,NIL,0,0)) DO Windows.TranslateMessage(msg); Windows.DispatchMessage(msg); END; END; END MenuDemo.