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SYSCOLOR.HLP
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OS/2 Help File
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1991-07-08
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5KB
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191 lines
ΓòÉΓòÉΓòÉ 1. SysColor for OS2 1.3 ΓòÉΓòÉΓòÉ
SysColor provides an expanded ability to modify the PM system colors. Unlike
the Control Panel system color utility, you may access more object types
directly, work with standard RGB values and restore previously customized
colors.
SysColor is SHAREWARE. If you use this utility regularly, you should send me
money. Please do.
Send $10 US
Dave Lester
Box 461 / 4 N. 3rd. St.
New Freedom, PA. 17349
DISCLAIMER
This program is provided to you AS IS with no express or implied warranty. It
has been thoroughly tested by the author. However, the author assumes no
responsibility for any damage that may be caused by its use.
If you would like to send me a comment or suggestion, I may be reached on
Compuserve as user 75600,237.
The following Topics may be selected from this menu:
Overview: Purpose and function
Dithering: Colors may be true or not
ΓòÉΓòÉΓòÉ 2. Welcome to Syscolor ΓòÉΓòÉΓòÉ
The SysColor utility reads the system color settings from the INI file and
allows you to manipulate them. You may change the running system's current
color values by pressing the Set button. If you find that the colors are
really ugly, (happens to me a lot) then you may press the Restore button to
retrieve the colors from the INI file again. After you are satisfied with the
colors, you may update the system INI file with your changes by pressing the
Save button.
The list box displays the PM object names that are recorded. Most of the names
are pretty straight forward. However, you will probably need to experiment a
little until you come to grips with all of their ramifications. Don't hold
back because all you need to do is press the Restore button to put things right
again.
Select the object that you wish to modify. Then adjust the RGB values using
the scroll bars. Press the Set button to make PM repaint all the active
windows. Darn right easy, isn't it?
The only fly in the ointment is dithering.
ΓòÉΓòÉΓòÉ 3. Color Dithering ΓòÉΓòÉΓòÉ
Modern display terminals are capable of reproducing a whole slew of colors.
Unfortunately, programmatically describing all of those colors for each and
every dot that you want to display is not such an easy thing. The problem is
one of too many choices.
In order to limit the possibilities, a physical and logical color table is
employed. If you would like to display a color that is not located in the
physical color table, then PM tries to reproduce that color by interlacing
colors that are located in the physical color table. Not really too complex a
concept. Just trot down to the local hardware store and you can probably find
the owner's son doing something very similar with latex paint. This interlaced
color reproduction is called dithering.
The rub is that PM does not allow dithering for all of its display objects.
For the objects that will dither, setting the color value that you prefer is
pretty straight forward. Setting the color for objects that won't dither is a
bit more obtuse. Scroll until you get close to the color that you want. Once
you stop scrolling, your color is matched against the physical color table and
replaced with the true color that is judged by PM to be nearest to the color
that you requested.
ΓòÉΓòÉΓòÉ 4. Action Bar Item - Exit ΓòÉΓòÉΓòÉ
Select the Exit action bar item to terminate the utility.
ΓòÉΓòÉΓòÉ 5. Keys Help ΓòÉΓòÉΓòÉ
The list of keys is arranged in groups.
ACCELERATOR KEYS
ALT-x
Exit program
HELP KEYS
F1
Get help
F2
Get extended help (from within any help window)
Alt+F4
End help
F9
Go to a list of keys (from within any help window)
F11
Go to the help index (from within any help window)
Esc
Previous Help Panel, or End help if only one panel
Alt+F6
Go to/from help and programs
Shift+F10
Get help for help
SYSTEM KEYS
Alt+F6
Switch to the next windowed program
Alt+Esc
Switch to the next program, including full-screen programs
Ctrl+Esc
Switch to the Task List
WINDOW KEYS
F3
Close a window
F10
Go to/from the action bar
Arrow keys
Move among choices
End
Go to the last choice in a pull-down
Esc
Cancel a pull-down or the system menu
Home
Go to the first choice in a pull-down
PgUp
Scroll the contents of the window up one page
PgDn
Scroll the contents of the window down one page
Underlined letter
Move among the choices on the action bar and pull-downs
Alt+F10
Go to/from the action bar
Alt+F4 or F3
Close the window
Alt+F5
Restore the window
Alt+F7
Move the window
Alt+F8
Size the window
Alt+F9
Minimize the window
Alt+F10
Maximize the window
Ctrl+PgDn or Shift+F8
Scroll the contents of the window right one page
Ctrl+PgUp or Shift+F7
Scroll the contents of the window left one page
Shift+Esc or Alt+Spacebar
Go to/from the system menu
Shift+Esc or Alt
Go to/from the system menu of a text window