Last updated: 17. 1.1998, 20:26
<* +M2EXTENSIONS *> MODULE DevCaps1; (*--------------------------------------------------------- DEVCAPS1.C --- Device Capabilities Display Program No. 1 (c) Charles Petzold, 1996 DevCaps1.mod --- Translation to XDS Modula-2 (c) Peter Stadler, 1997 ---------------------------------------------------------*) IMPORT Windows; IMPORT SYSTEM; CONST szAppName = "DevCaps1"; VAR hwnd : Windows.HWND; msg : Windows.MSG; wc : Windows.WNDCLASSEX; cxChar: INTEGER; cyChar: INTEGER; cxCaps: INTEGER; CONST NUMLINES = 20; TYPE Dev = RECORD iIndex : INTEGER; szLabel : ARRAY [0..20] OF CHAR; szDesc : ARRAY [0..50] OF CHAR; END; DevCaps= ARRAY[0..NUMLINES-1] OF Dev; CONST devcaps = DevCaps { {Windows.HORZSIZE, "HORZSIZE", "Width in millimeters:"}, {Windows.VERTSIZE, "VERTSIZE", "Height in millimeters:"}, {Windows.HORZRES, "HORZRES", "Width in pixels:"}, {Windows.VERTRES, "VERTRES", "Height in raster lines:"}, {Windows.BITSPIXEL, "BITSPIXEL", "Color bits per pixel:"}, {Windows.PLANES, "PLANES", "Number of color planes:"}, {Windows.NUMBRUSHES, "NUMBRUSHES", "Number of device brushes:"}, {Windows.NUMPENS, "NUMPENS", "Number of device pens:"}, {Windows.NUMMARKERS, "NUMMARKERS", "Number of device markers:"}, {Windows.NUMFONTS, "NUMFONTS", "Number of device fonts:"}, {Windows.NUMCOLORS, "NUMCOLORS", "Number of device colors:"}, {Windows.PDEVICESIZE, "PDEVICESIZE", "Size of device structure:"}, {Windows.ASPECTX, "ASPECTX", "Relative width of pixel:"}, {Windows.ASPECTY, "ASPECTY", "Relative height of pixel:"}, {Windows.ASPECTXY, "ASPECTXY", "Relative diagonal of pixel:"}, {Windows.LOGPIXELSX, "LOGPIXELSX", "Horizontal dots per inch:"}, {Windows.LOGPIXELSY, "LOGPIXELSY", "Vertical dots per inch:"}, {Windows.SIZEPALETTE, "SIZEPALETTE", "Number of palette entries:"}, {Windows.NUMRESERVED, "NUMRESERVED", "Reserved palette entries:"}, {Windows.COLORRES, "COLORRES", "Actual color resolution:"} }; (*++++*****************************************************************) PROCEDURE [Windows.CALLBACK] WndProc(hwnd : Windows.HWND; (**********************************************************************) iMsg : Windows.UINT; wParam : Windows.WPARAM; lParam : Windows.LPARAM) : Windows.LRESULT; VAR szBuffer : ARRAY[0..9] OF CHAR; i : INTEGER; hdc : Windows.HDC; ps : Windows.PAINTSTRUCT; tm : Windows.TEXTMETRIC; BEGIN CASE (iMsg) OF | Windows.WM_CREATE: hdc := Windows.GetDC (hwnd); Windows.GetTextMetrics (hdc, tm); cxChar := tm.tmAveCharWidth; IF(tm.tmPitchAndFamily=SYSTEM.CAST(Windows.PITCH_AND_FAMILY_SET,1)) THEN cxCaps := 3*cxChar/2; ELSE cxCaps := 2*cxChar/2; END; cyChar := tm.tmHeight + tm.tmExternalLeading; Windows.ReleaseDC (hwnd, hdc); RETURN 0; | Windows.WM_PAINT: hdc := Windows.BeginPaint (hwnd, ps); FOR i := 0 TO NUMLINES-1 DO Windows.TextOut (hdc, cxChar, cyChar * (1 + i), devcaps[i].szLabel, LENGTH(devcaps[i].szLabel)); Windows.TextOut (hdc, cxChar + 22 * cxCaps, cyChar * (1 + i), devcaps[i].szDesc, LENGTH(devcaps[i].szDesc)); Windows.SetTextAlign (hdc, Windows.TA_RIGHT + Windows.TA_TOP); Windows.TextOut (hdc, cxChar + 22 * cxCaps + 40 * cxChar, cyChar * (1 + i), szBuffer, Windows.wsprintf (szBuffer, "%5d", Windows.GetDeviceCaps (hdc, devcaps[i].iIndex))); Windows.SetTextAlign (hdc, Windows.TA_LEFT + Windows.TA_TOP); END; Windows.EndPaint (hwnd, ps); 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 := NIL; 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 *) "Device Capabilities, 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 IF InitApplication() AND InitMainWindow() THEN WHILE (Windows.GetMessage(msg,NIL,0,0)) DO Windows.TranslateMessage(msg); Windows.DispatchMessage(msg); END; END; END DevCaps1.