Last updated: 15. 2.1998, 17:47
<*/NOWARN:F*> MODULE About2; (*-------------------------------------------- ABOUT2.C --- About Box Demo Program No. 2 (c) Charles Petzold, 1996 About2.MOD --- Translation to Stony Brook Modula-2 (c) Peter Stadler, 1997 ------------------------------------------*) %IF WIN32 %THEN <*/Resource:ABOUT2.RES*> %ELSE %END IMPORT h2d_about2; IMPORT WIN32; IMPORT WINUSER; IMPORT SYSTEM; IMPORT WINGDI; IMPORT WINX; CONST szAppName = "About2"; VAR iCurrentColor : INTEGER = h2d_about2.IDD_BLACK; iCurrentFigure : INTEGER = h2d_about2.IDD_RECT; TYPE COLORREFARRAY = ARRAY[0..7] OF WIN32.COLORREF; VAR msg : WINUSER.MSG; hwnd : WIN32.HWND; wc : WINUSER.WNDCLASSEX; crColor : COLORREFARRAY; hInstance : WIN32.HINSTANCE; hCtrlBlock : WIN32.HWND; iColor : INTEGER; iFigure : INTEGER; (*++++*****************************************************************) PROCEDURE PaintWindow ( hwnd : WIN32.HWND; iColor : INTEGER; iFigure : INTEGER); (**********************************************************************) VAR hBrush : WIN32.HBRUSH; hdc : WIN32.HDC; rect : WIN32.RECT; BEGIN hdc := WINUSER.GetDC (hwnd); WINUSER.GetClientRect (hwnd, rect); hBrush := WINGDI.CreateSolidBrush (crColor[iColor - h2d_about2.IDD_BLACK]); hBrush := SYSTEM.CAST(WIN32.HBRUSH, WINGDI.SelectObject (hdc, SYSTEM.CAST(WIN32.HGDIOBJ,hBrush))); IF (iFigure = h2d_about2.IDD_RECT) THEN WINGDI.Rectangle (hdc, rect.left, rect.top, rect.right, rect.bottom); ELSE WINGDI.Ellipse (hdc, rect.left, rect.top, rect.right, rect.bottom); END; WINGDI.DeleteObject (WINGDI.SelectObject (hdc, SYSTEM.CAST(WIN32.HGDIOBJ,hBrush))); WINUSER.ReleaseDC (hwnd, hdc); END PaintWindow; (*++++*****************************************************************) PROCEDURE PaintTheBlock ( hCtrl : WIN32.HWND; iColor : INTEGER; iFigure: INTEGER); (**********************************************************************) BEGIN WINUSER.InvalidateRect (hCtrl, WINX.NIL_RECT, TRUE); WINUSER.UpdateWindow (hCtrl); PaintWindow (hCtrl, iColor, iFigure); END PaintTheBlock; <*/PUSH*> %IF WIN32 %THEN <*/CALLS:WIN32SYSTEM*> %ELSE <*/CALLS:WINSYSTEM*> %END (*++++*****************************************************************) PROCEDURE AboutDlgProc (hDlg : WIN32.HWND; (**********************************************************************) iMsg : WIN32.UINT; wParam : WIN32.WPARAM; lParam : WIN32.LPARAM) : WIN32.BOOL [EXPORT]; BEGIN CASE (iMsg) OF | WINUSER.WM_INITDIALOG : iColor := iCurrentColor; iFigure := iCurrentFigure; WINUSER.CheckRadioButton (hDlg, h2d_about2.IDD_BLACK, h2d_about2.IDD_WHITE, iColor); WINUSER.CheckRadioButton (hDlg, h2d_about2.IDD_RECT, h2d_about2.IDD_ELL, iFigure); hCtrlBlock := WINUSER.GetDlgItem (hDlg, h2d_about2.IDD_PAINT); WINUSER.SetFocus (WINUSER.GetDlgItem (hDlg, iColor)); RETURN FALSE; | WINUSER.WM_COMMAND : CASE (WINUSER.LOWORD (wParam)) OF | WINUSER.IDOK : iCurrentColor := iColor; iCurrentFigure := iFigure; WINUSER.EndDialog (hDlg, 1); RETURN TRUE; | WINUSER.IDCANCEL : WINUSER.EndDialog (hDlg, 0); RETURN TRUE; | h2d_about2.IDD_BLACK : iColor := WINUSER.LOWORD (wParam); WINUSER.CheckRadioButton (hDlg, h2d_about2.IDD_BLACK, h2d_about2.IDD_WHITE, WINUSER.LOWORD (wParam)); PaintTheBlock (hCtrlBlock, iColor, iFigure); RETURN TRUE; | h2d_about2.IDD_RED : iColor := WINUSER.LOWORD (wParam); WINUSER.CheckRadioButton (hDlg, h2d_about2.IDD_BLACK, h2d_about2.IDD_WHITE, WINUSER.LOWORD (wParam)); PaintTheBlock (hCtrlBlock, iColor, iFigure); RETURN TRUE; | h2d_about2.IDD_GREEN : iColor := WINUSER.LOWORD (wParam); WINUSER.CheckRadioButton (hDlg, h2d_about2.IDD_BLACK, h2d_about2.IDD_WHITE, WINUSER.LOWORD (wParam)); PaintTheBlock (hCtrlBlock, iColor, iFigure); RETURN TRUE; | h2d_about2.IDD_YELLOW : iColor := WINUSER.LOWORD (wParam); WINUSER.CheckRadioButton (hDlg, h2d_about2.IDD_BLACK, h2d_about2.IDD_WHITE, WINUSER.LOWORD (wParam)); PaintTheBlock (hCtrlBlock, iColor, iFigure); RETURN TRUE; | h2d_about2.IDD_BLUE : iColor := WINUSER.LOWORD (wParam); WINUSER.CheckRadioButton (hDlg, h2d_about2.IDD_BLACK, h2d_about2.IDD_WHITE, WINUSER.LOWORD (wParam)); PaintTheBlock (hCtrlBlock, iColor, iFigure); RETURN TRUE; | h2d_about2.IDD_MAGENTA : iColor := WINUSER.LOWORD (wParam); WINUSER.CheckRadioButton (hDlg, h2d_about2.IDD_BLACK, h2d_about2.IDD_WHITE, WINUSER.LOWORD (wParam)); PaintTheBlock (hCtrlBlock, iColor, iFigure); RETURN TRUE; | h2d_about2.IDD_CYAN : iColor := WINUSER.LOWORD (wParam); WINUSER.CheckRadioButton (hDlg, h2d_about2.IDD_BLACK, h2d_about2.IDD_WHITE, WINUSER.LOWORD (wParam)); PaintTheBlock (hCtrlBlock, iColor, iFigure); RETURN TRUE; | h2d_about2.IDD_WHITE : iColor := WINUSER.LOWORD (wParam); WINUSER.CheckRadioButton (hDlg, h2d_about2.IDD_BLACK, h2d_about2.IDD_WHITE, WINUSER.LOWORD (wParam)); PaintTheBlock (hCtrlBlock, iColor, iFigure); RETURN TRUE; | h2d_about2.IDD_RECT : iFigure := WINUSER.LOWORD (wParam); WINUSER.CheckRadioButton (hDlg, h2d_about2.IDD_RECT, h2d_about2.IDD_ELL, WINUSER.LOWORD (wParam)); PaintTheBlock (hCtrlBlock, iColor, iFigure); RETURN TRUE; | h2d_about2.IDD_ELL : iFigure := WINUSER.LOWORD (wParam); WINUSER.CheckRadioButton (hDlg, h2d_about2.IDD_RECT, h2d_about2.IDD_ELL, WINUSER.LOWORD (wParam)); PaintTheBlock (hCtrlBlock, iColor, iFigure); RETURN TRUE; ELSE END; | WINUSER.WM_PAINT : PaintTheBlock (hCtrlBlock, iColor, iFigure); ELSE RETURN FALSE; END; RETURN FALSE; END AboutDlgProc; <*/POP*> <*/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 ps : WINUSER.PAINTSTRUCT; lpcr : WINUSER.LPCREATESTRUCT; BEGIN CASE (iMsg) OF | WINUSER.WM_CREATE : lpcr := SYSTEM.CAST(WINUSER.LPCREATESTRUCT,lParam); hInstance := lpcr^.hInstance; RETURN 0; | WINUSER.WM_COMMAND : CASE (WINUSER.LOWORD (wParam)) OF | h2d_about2.IDM_ABOUT : IF (WINUSER.DialogBox (hInstance, "AboutBox", hwnd, AboutDlgProc)=1) THEN WINUSER.InvalidateRect (hwnd, WINX.NIL_RECT, TRUE); END; RETURN 0; ELSE RETURN 0; END; | WINUSER.WM_PAINT : WINUSER.BeginPaint (hwnd, ps); WINUSER.EndPaint (hwnd, ps); PaintWindow (hwnd, iCurrentColor, iCurrentFigure); 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; (**********************************************************************) VAR rc : CARDINAL; BEGIN wc.cbSize := SIZE(wc); wc.style := WINUSER.CS_HREDRAW BOR WINUSER.CS_VREDRAW; wc.lpfnWndProc := WndProc; wc.cbClsExtra := 0; wc.cbWndExtra := 0; wc.hInstance := WINX.Instance; wc.hIcon := WINUSER.LoadIcon (wc.hInstance,szAppName); wc.hCursor := WINUSER.LoadCursor (NIL, WINUSER.IDC_ARROW^); wc.hbrBackground := SYSTEM.CAST(WIN32.HBRUSH,WINGDI.GetStockObject(WINGDI.WHITE_BRUSH)); wc.lpszMenuName := SYSTEM.ADR(szAppName); wc.lpszClassName := SYSTEM.ADR(szAppName); wc.hIconSm := WINUSER.LoadIcon (wc.hInstance,szAppName); rc := WINUSER.RegisterClassEx(wc); RETURN rc#0; END InitApplication; (*++++*****************************************************************) PROCEDURE InitMainWindow () : BOOLEAN; (**********************************************************************) BEGIN hwnd := WINUSER.CreateWindow (szAppName, "About Box Demo Program #2: Translation to Stony Brook Modula-2", WINUSER.WS_OVERLAPPEDWINDOW, WINUSER.CW_USEDEFAULT, WINUSER.CW_USEDEFAULT, WINUSER.CW_USEDEFAULT, WINUSER.CW_USEDEFAULT, NIL, NIL, WINX.Instance, NIL); IF hwnd = NIL THEN RETURN FALSE; END; WINUSER.ShowWindow (hwnd, WINUSER.SW_SHOWDEFAULT); WINUSER.UpdateWindow (hwnd); RETURN TRUE; END InitMainWindow; BEGIN crColor := COLORREFARRAY { WINGDI.RGB (0, 0, 0), WINGDI.RGB ( 0, 0, 255), WINGDI.RGB (0, 255, 0), WINGDI.RGB ( 0, 255, 255), WINGDI.RGB (255, 0, 0), WINGDI.RGB (255, 0, 255), WINGDI.RGB (255, 255, 0), WINGDI.RGB (255, 255, 255) }; IF InitApplication() AND InitMainWindow() THEN WHILE (WINUSER.GetMessage(msg,NIL,0,0)) DO WINUSER.TranslateMessage(msg); WINUSER.DispatchMessage(msg); END; END; END About2.