Last updated: 15. 1.1998, 21:42
<*/NOWARN:F*> MODULE EndJoin; (*---------------------------------------- ENDJOIN.C --- Ends and Joins Demo (c) Charles Petzold, 1996 EndJoin.C --- Translation to Stony Brook Modula-2 by (c) Peter Stadler, 1997 ----------------------------------------*) IMPORT WINUSER; IMPORT WIN32; IMPORT WINX; IMPORT WINGDI; IMPORT SYSTEM; CONST szAppName = "EndJoin"; VAR hwnd : WIN32.HWND; msg : WINUSER.MSG; wc : WINUSER.WNDCLASSEX; iEnd : ARRAY[0..2] OF INTEGER = { WINGDI.PS_ENDCAP_ROUND, WINGDI.PS_ENDCAP_SQUARE, WINGDI.PS_ENDCAP_FLAT }; iJoin : ARRAY[0..2] OF INTEGER = { WINGDI.PS_JOIN_ROUND, WINGDI.PS_JOIN_BEVEL, WINGDI.PS_JOIN_MITER }; cxClient : INTEGER; cyClient : INTEGER; <*/PUSH*> %IF WIN32 %THEN <*/CALLS:WIN32SYSTEM*> %ELSE <*/CALLS:WINSYSTEM*> %END (*++++*****************************************************************) PROCEDURE WndProc(hwnd : WIN32.HWND; (**********************************************************************) iMsg : WIN32.UINT; wParam : WIN32.WPARAM; lParam : WIN32.LPARAM) : WIN32.LRESULT [EXPORT]; VAR hdc : WIN32.HDC; i : INTEGER; lb : WINGDI.LOGBRUSH; ps : WINUSER.PAINTSTRUCT; BEGIN CASE (iMsg) OF | WINUSER.WM_SIZE: cxClient := WINUSER.LOWORD (lParam); cyClient := WINUSER.HIWORD (lParam); RETURN 0; | WINUSER.WM_PAINT: hdc := WINUSER.BeginPaint (hwnd, ps); WINGDI.SetMapMode (hdc, WINGDI.MM_ANISOTROPIC); WINGDI.SetWindowExtEx (hdc, 100, 100, WINX.NIL_SIZE); WINGDI.SetViewportExtEx (hdc, cxClient, cyClient, WINX.NIL_SIZE); lb.lbStyle := WINGDI.BS_SOLID; lb.lbColor := WINGDI.RGB (128, 128, 128); lb.lbHatch := 0; FOR i := 0 TO 3-1 DO WINGDI.SelectObject (hdc, SYSTEM.CAST(WIN32.HGDIOBJ,WINGDI.ExtCreatePen (WINGDI.PS_SOLID BOR WINGDI.PS_GEOMETRIC BOR iEnd [i] BOR iJoin [i], 10, lb, 0, WINX.NIL_DWORD))); WINGDI.BeginPath (hdc); WINGDI.MoveToEx (hdc, 10 + 30 * i, 25, WINX.NIL_POINT); WINGDI.LineTo (hdc, 20 + 30 * i, 75); WINGDI.LineTo (hdc, 30 + 30 * i, 25); WINGDI.EndPath (hdc); WINGDI.StrokePath (hdc); WINGDI.DeleteObject ( WINGDI.SelectObject (hdc, WINGDI.GetStockObject (WINGDI.BLACK_PEN))); WINGDI.MoveToEx (hdc, 10 + 30 * i, 25, WINX.NIL_POINT); WINGDI.LineTo (hdc, 20 + 30 * i, 75); WINGDI.LineTo (hdc, 30 + 30 * i, 25); END; WINUSER.EndPaint (hwnd, ps); RETURN 0; | WINUSER.WM_DESTROY: WINUSER.PostQuitMessage (0); RETURN 0; ELSE RETURN WINUSER.DefWindowProc (hwnd, iMsg, wParam, lParam); END; END WndProc; <*/POP*> (*++++*****************************************************************) PROCEDURE InitApplication () : BOOLEAN; (**********************************************************************) BEGIN wc.cbSize := SIZE(wc); wc.style := WINUSER.CS_HREDRAW + WINUSER.CS_VREDRAW; wc.lpfnWndProc := WndProc; wc.cbClsExtra := 0; wc.cbWndExtra := 0; wc.hInstance := WINX.Instance; wc.hIcon := WINUSER.LoadIcon (NIL, WINUSER.IDI_APPLICATION^); wc.hCursor := WINUSER.LoadCursor (NIL, WINUSER.IDC_ARROW^); wc.hbrBackground := SYSTEM.CAST(WIN32.HBRUSH, WINGDI.GetStockObject (WINGDI.WHITE_BRUSH)); wc.lpszMenuName := NIL; wc.lpszClassName := SYSTEM.ADR(szAppName); wc.hIconSm := WINUSER.LoadIcon (NIL,WINUSER.IDI_APPLICATION^); RETURN WINUSER.RegisterClassEx(wc)#0; END InitApplication; (*++++*****************************************************************) PROCEDURE InitMainWindow () : BOOLEAN; (**********************************************************************) BEGIN hwnd := WINUSER.CreateWindow ( szAppName, (* window class name *) "Ends and Joins Demo: Translation to Stony Brook Modula-2", (* window caption *) WINUSER.WS_OVERLAPPEDWINDOW, (* window style *) WINUSER.CW_USEDEFAULT, (* initial x position *) WINUSER.CW_USEDEFAULT, (* initial y position *) WINUSER.CW_USEDEFAULT, (* initial x size *) WINUSER.CW_USEDEFAULT, (* initial y size *) NIL, (* parent window handle *) NIL, (* window menu handle *) wc.hInstance, (* program instance handle *) NIL); (* creation parameters *) IF hwnd = NIL THEN RETURN FALSE; END; WINUSER.ShowWindow (hwnd, WINUSER.SW_SHOWDEFAULT); WINUSER.UpdateWindow (hwnd); RETURN TRUE; END InitMainWindow; BEGIN IF InitApplication() AND InitMainWindow() THEN WHILE (WINUSER.GetMessage(msg,NIL,0,0)) DO WINUSER.TranslateMessage(msg); WINUSER.DispatchMessage(msg); END; END; END EndJoin.