Attributes in Hercules Graphics Mode

Last reviewed: July 17, 1997
Article ID: Q38312

5.10 6.00 6.00a 6.00ax 7.00 | 5.10 6.00 6.00a | 1.00 1.50

MS-DOS                      | OS/2            | WINDOWS

kbprg

The information in this article applies to:

The C Run-time (CRT), included with:

    - Microsoft C for MS-DOS, versions 5.1, 6.0, 6.0a, and 6.0ax
    - Microsoft C for OS/2, versions 5.1, 6.0, and 6.0a
    - Microsoft C/C++ for MS-DOS, version 7.0
    - Microsoft Visual C++ for Windows, version 1.0 and 1.5

When using the Hercules graphics adapter in graphics mode, each pixel maps to only 1 bit in memory. Because there is only 1 bit, that pixel can only be on or off. In Hercules graphics mode, there is no facility for attributes such as high-intensity, blinking, reverse, or underline.

In Hercules graphics mode, to obtain blinking, reverse, and underline, your program must manipulate or turn on and off each pixel. High- intensity is not possible.

If you put the adapter into Text mode, you can use all of these attributes freely.

Additional reference words: kbinf 1.00 1.50 5.10 6.00 6.00a 6.00ax 7.00
KBCategory: kbprg
KBSubcategory: CRTIss GraphicsIss
Keywords : kb16bitonly

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Last reviewed: July 17, 1997
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