home *** CD-ROM | disk | FTP | other *** search
- /*---------------------------------------------------------
- DEVCAPS1.C -- Device Capabilities Display Program No. 1
- (c) Charles Petzold, 1996
- ---------------------------------------------------------*/
-
- #include <windows.h>
- #include <string.h>
-
- #define NUMLINES ((int) (sizeof devcaps / sizeof devcaps [0]))
-
- struct
- {
- int iIndex ;
- char *szLabel ;
- char *szDesc ;
- }
- devcaps [] =
- {
- HORZSIZE, "HORZSIZE", "Width in millimeters:",
- VERTSIZE, "VERTSIZE", "Height in millimeters:",
- HORZRES, "HORZRES", "Width in pixels:",
- VERTRES, "VERTRES", "Height in raster lines:",
- BITSPIXEL, "BITSPIXEL", "Color bits per pixel:",
- PLANES, "PLANES", "Number of color planes:",
- NUMBRUSHES, "NUMBRUSHES", "Number of device brushes:",
- NUMPENS, "NUMPENS", "Number of device pens:",
- NUMMARKERS, "NUMMARKERS", "Number of device markers:",
- NUMFONTS, "NUMFONTS", "Number of device fonts:",
- NUMCOLORS, "NUMCOLORS", "Number of device colors:",
- PDEVICESIZE, "PDEVICESIZE", "Size of device structure:",
- ASPECTX, "ASPECTX", "Relative width of pixel:",
- ASPECTY, "ASPECTY", "Relative height of pixel:",
- ASPECTXY, "ASPECTXY", "Relative diagonal of pixel:",
- LOGPIXELSX, "LOGPIXELSX", "Horizontal dots per inch:",
- LOGPIXELSY, "LOGPIXELSY", "Vertical dots per inch:",
- SIZEPALETTE, "SIZEPALETTE", "Number of palette entries:",
- NUMRESERVED, "NUMRESERVED", "Reserved palette entries:",
- COLORRES, "COLORRES", "Actual color resolution:"
- } ;
-
- LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
-
- int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
- PSTR szCmdLine, int iCmdShow)
- {
- static char szAppName[] = "DevCaps1" ;
- HWND hwnd ;
- MSG msg ;
- WNDCLASSEX wndclass ;
-
- wndclass.cbSize = sizeof (wndclass) ;
- wndclass.style = CS_HREDRAW | CS_VREDRAW ;
- wndclass.lpfnWndProc = WndProc ;
- wndclass.cbClsExtra = 0 ;
- wndclass.cbWndExtra = 0 ;
- wndclass.hInstance = hInstance ;
- wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
- wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
- wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
- wndclass.lpszMenuName = NULL ;
- wndclass.lpszClassName = szAppName ;
- wndclass.hIconSm = LoadIcon (NULL, IDI_APPLICATION) ;
-
- RegisterClassEx (&wndclass) ;
-
- hwnd = CreateWindow (szAppName, "Device Capabilities",
- WS_OVERLAPPEDWINDOW,
- CW_USEDEFAULT, CW_USEDEFAULT,
- CW_USEDEFAULT, CW_USEDEFAULT,
- NULL, NULL, hInstance, NULL) ;
-
- ShowWindow (hwnd, iCmdShow) ;
- UpdateWindow (hwnd) ;
-
- while (GetMessage (&msg, NULL, 0, 0))
- {
- TranslateMessage (&msg) ;
- DispatchMessage (&msg) ;
- }
- return msg.wParam ;
- }
-
- LRESULT CALLBACK WndProc (HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
- {
- static int cxChar, cxCaps, cyChar ;
- char szBuffer[10] ;
- HDC hdc ;
- int i ;
- PAINTSTRUCT ps ;
- TEXTMETRIC tm ;
-
- switch (iMsg)
- {
- case WM_CREATE:
- hdc = GetDC (hwnd) ;
-
- GetTextMetrics (hdc, &tm) ;
- cxChar = tm.tmAveCharWidth ;
- cxCaps = (tm.tmPitchAndFamily & 1 ? 3 : 2) * cxChar / 2 ;
- cyChar = tm.tmHeight + tm.tmExternalLeading ;
-
- ReleaseDC (hwnd, hdc) ;
- return 0 ;
-
- case WM_PAINT:
- hdc = BeginPaint (hwnd, &ps) ;
-
- for (i = 0 ; i < NUMLINES ; i++)
- {
- TextOut (hdc, cxChar, cyChar * (1 + i),
- devcaps[i].szLabel,
- strlen (devcaps[i].szLabel)) ;
-
- TextOut (hdc, cxChar + 22 * cxCaps, cyChar * (1 + i),
- devcaps[i].szDesc,
- strlen (devcaps[i].szDesc)) ;
-
- SetTextAlign (hdc, TA_RIGHT | TA_TOP) ;
-
- TextOut (hdc, cxChar + 22 * cxCaps + 40 * cxChar,
- cyChar * (1 + i), szBuffer,
- wsprintf (szBuffer, "%5d",
- GetDeviceCaps (hdc, devcaps[i].iIndex))) ;
-
- SetTextAlign (hdc, TA_LEFT | TA_TOP) ;
- }
-
- EndPaint (hwnd, &ps) ;
- return 0 ;
-
- case WM_DESTROY:
- PostQuitMessage (0) ;
- return 0 ;
- }
-
- return DefWindowProc (hwnd, iMsg, wParam, lParam) ;
- }
-