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#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:"
};

sizeof( a ) / sizeof( a[0] )