ID Number: Q39215
5.00 5.10 6.00 6.00a 6.00ax 7.00 | 5.10 6.00 6.00a
MS-DOS | OS/2
Summary:
In Microsoft C versions 5.1, 6.0, 6.0a, 6.0ax, and C/C++ version 7.0,
the _setfillmask() function sets a background pattern using repeated 8-
by-8 pixel patterns. The mask consists of an 8-byte character array.
More Information:
The following example illustrates a pixel pattern:
Powers of 2
decimal: 128 64 32 16 08 04 02 01
hex: 80 40 20 10 08 04 02 01
--------------------------------
byte 1 | 1 1 1 1 = 0x66
byte 2 | 1 1 1 1 = 0x66
byte 3 | = 0x00
byte 4 | 1 = 0x08
byte 5 | 1 1 = 0x18
byte 6 | 1 1 = 0x81
byte 7 | 1 1 = 0x42
byte 8 | 1 1 1 1 = 0x3C
The character array for this particular fill mask would be declared in
a C program as follows:
unsigned char *maskarray = "\x66\x66\x00\x08\x18\x81\x42\x3C";
When the fill mask above is used with _setfillmask() and a graphics
function such as _rectangle() or _ellipse(), the pattern creates a
continuous field of faces.
Additional reference words: 5.10 6.00 6.00a 6.00ax 7.00