//DEVCAPS1.C--Device Capabilities Display Program No.1 (c) Charles Petzold, 1998

 #include <Windows.h>

 #define NUMLINES ((int) (sizeof(devcaps) / sizeof(devcaps[0])))

 struct

 {

     int iIndex;

     TCHAR *szLabel;

     TCHAR *szDesc;

 }

 devcaps[] =

 {

     HORZSIZE,        TEXT("HORZSIZE"),        TEXT("Width in millimeters:"),

     VERTSIZE,        TEXT("VERTSIZE"),        TEXT("Height in milimeters:"),

     HORZRES,        TEXT("HORZRES"),        TEXT("Width in pixels:"),

     VERTRES,        TEXT("VERTRES"),        TEXT("Height in raster lines:"),

     BITSPIXEL,        TEXT("BITSPIXEL"),        TEXT("Color bits per pixel:"),

     PLANES,            TEXT("PLANES"),            TEXT("Number of color planes:"),

     NUMBRUSHES,        TEXT("NUMBRUSHES"),        TEXT("Number of device brushes"),

     NUMPENS,        TEXT("NUMPENS"),        TEXT("Number of device pens:"),

     NUMMARKERS,        TEXT("NUMMARKERS"),        TEXT("Number of device markers:"),

     NUMFONTS,        TEXT("NUMFONTS"),        TEXT("Number of device fonts:"),

     NUMCOLORS,        TEXT("NUMCOLORS"),        TEXT("Number of device colors:"),

     PDEVICESIZE,    TEXT("PDEVICESIZE"),    TEXT("Size of device structure:"),

     ASPECTX,        TEXT("ASPECTX"),        TEXT("Relative width of pixel:"),

     ASPECTY,        TEXT("ASPECTY"),        TEXT("Relative height of pixel:"),

     ASPECTXY,        TEXT("ASPECTXY"),        TEXT("Relative diagonal of pixel:"),

     LOGPIXELSX,        TEXT("LOGPIXELSX"),        TEXT("Horizontal dots per inch:"),

     LOGPIXELSY,        TEXT("LOGPIXELSY"),        TEXT("Vertical dots per inch:"),

     SIZEPALETTE,    TEXT("SIZEPALETTE"),    TEXT("Number of palette entries:"),

     NUMRESERVED,    TEXT("NUMRESERVED"),    TEXT("Reserved palette entries:"),

     COLORRES,        TEXT("COLORRES"),        TEXT("Actual color resolution:")

 };

 LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

 int WINAPI WinMain( __in HINSTANCE hInstance

                     , __in_opt HINSTANCE hPrevInstance

                     , __in LPSTR lpCmdLine

                     , __in int nShowCmd )

 {

     static TCHAR szAppName[] = TEXT("DevCaps1");

     HWND hwnd;

     MSG msg;

     WNDCLASS wndclass;

     wndclass.style = CS_HREDRAW | CS_VREDRAW;

     wndclass.lpfnWndProc = WndProc;

     wndclass.cbClsExtra = ;

     wndclass.cbWndExtra = ;

     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;

     if (!RegisterClass(&wndclass))

     {

         MessageBox(NULL, TEXT("This program requires Window NT!")

             , szAppName, MB_ICONERROR);

         return ;

     }

     hwnd = CreateWindow(szAppName, TEXT("Device Capabilities")

         , WS_OVERLAPPEDWINDOW

         , CW_USEDEFAULT, CW_USEDEFAULT

         , CW_USEDEFAULT, CW_USEDEFAULT

         , NULL, NULL, hInstance, NULL);

     ShowWindow(hwnd, nShowCmd);

     UpdateWindow(hwnd);

     while (GetMessage(&msg, NULL, , ))

     {

         TranslateMessage(&msg);

         DispatchMessage(&msg);

     }

     return msg.wParam;

 }

 LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

 {

     static int cxChar, cxCaps, cyChar;

     TCHAR szBuffer[];

     HDC hdc;

     int i;

     PAINTSTRUCT ps;

     TEXTMETRIC tm;

     switch (message)

     {

     case WM_CREATE:

         hdc = GetDC(hwnd);

         GetTextMetrics(hdc, &tm);

         cxChar = tm.tmAveCharWidth;

         cxCaps = (tm.tmPitchAndFamily &  ?  : ) * cxChar / ;

         cyChar = tm.tmHeight + tm.tmExternalLeading;

         ReleaseDC(hwnd, hdc);

         return ;

     case WM_PAINT:

         hdc = BeginPaint(hwnd, &ps);

         for (i = ; i != NUMLINES; ++i)

         {

             TextOut(hdc, , cyChar * i, devcaps[i].szLabel

                 , lstrlen(devcaps[i].szLabel));

             TextOut(hdc,  * cxCaps, cyChar * i, devcaps[i].szDesc

                 , lstrlen(devcaps[i].szDesc));

             SetTextAlign(hdc, TA_RIGHT | TA_TOP);

             TextOut(hdc,  * cxCaps +  * cxChar, cyChar * i, szBuffer

                 , wsprintf(szBuffer, TEXT("%5d"), GetDeviceCaps(hdc, devcaps[i].iIndex)));

             SetTextAlign(hdc, TA_LEFT | TA_TOP);

         }

         EndPaint(hwnd, &ps);

         return ;

     case WM_DESTROY:

         PostQuitMessage();

         return ;

     }

     return DefWindowProc(hwnd, message, wParam, lParam);

 }