pnglib Files

1)usage in dosbox:
  ld_file.exe <file.png>
example 1:  ld_file.exe ..\pnglib.png
example 2:  ld_file.exe ..\01.png

  If not dosbox, we maybe modify graphy_mode in
ld_file.c\int show_bmp_fail(void)
{
 else if(biBitCount==16)/* 64K color */
	{grahy_mode(0x117);/* 1024 x 768 x RGB565 */
	...
	}

 else if(biBitCount==24)/* 16M color */
	{grahy_mode(0x117);/* 1024 x 768 x RGB565 */
	...
	}

 else if(biBitCount==32)/* 4G color */
	{grahy_mode(0x117);/* 1024 x 768 x RGB565 */
	...
	}
}


2)how to build ld_file.exe:
2.1)modify the path of turbo c.
  In my computer, it is in D:\program\tc2.0
so i write this path in all batch files as below.
But it is maybe not your bc path.
You can modify them in batch files.

2.2)compile and link:
  make.bat will make ld_file.exe, after compile over 20 files which are in [source] folder.
That's original designed by Thomas.  

  mak2.bat will make ld_file.exe, after compile ld_file.c and gdi.c and pnglib.c.
Because the later #include over 20 files which are in [source] folder.
That's quick and dirty technique by Leisure bamboo.

  dll.bat will make ld_file.exe by ld_file.c and gdi.c, and make png.ovl by pnglib.c.
After wrap all png function in the ovl, so all variable(which in ld_file.c)
will NOT worry about their names conflict with
over 20 files(which are in [source] folder).