1 #define gray50_width 16
 
   2 #define gray50_height 16
 
   3 static unsigned char gray50_bits[] = {
 
   4    0x55, 0x55, 0xaa, 0xaa, 0x55, 0x55, 0xaa, 0xaa, 0x55, 0x55, 0xaa, 0xaa,
 
   5    0x55, 0x55, 0xaa, 0xaa, 0x55, 0x55, 0xaa, 0xaa, 0x55, 0x55, 0xaa, 0xaa,
 
   6    0x55, 0x55, 0xaa, 0xaa, 0x55, 0x55, 0xaa, 0xaa};