The WIN.INI [Compatibility] SectionLast reviewed: November 23, 1994Article ID: Q82860 |
The information in this article applies to:
SUMMARYThis article discusses the Microsoft Windows version 3.1 WIN.INI [Compatibility] section.
MORE INFORMATIONCompatibility bits are defined in the [Compatibility] section of the WIN.INI file for the following applications:
The following is a detailed explanation of compatibility bits. The symbolic name is defined in WINDOWS.H. The problem, listed for each application, will be fixed if the compatibility bit is defined. If these switches are in the [Compatibility] section of the WIN.INI file then these problems will not occur. The Windows 3.1 Setup program automatically inserts these switches into the WIN.INI, regardless of whether or not that application is on the machine. The symbolic names are internal only, they are not in the WINDOWS.H that ships with the Software Development Kit (SDK).
Bit: 1Symbolic name: GACF_IGNORENODISCARD Meaning: Ignore NODISCARD flag if passed to GlobalAlloc(). C 6.x Runtime install library was allocating global memory
improperly by incorrectly specifying the GMEM_NODISCARD bit.
Apps:
Publisher
WIN.INI Line: notshell=0x0001
Problem: Setup for MS apps. does not work on 1M 286 machine.
Money
WIN.INI Line: notshell=0x0001
Problem: Setup for MS apps. does not work on 1M 286 machine.
Works
WIN.INI Line: notshell=0x0001
Problem: Setup for MS apps. does not work on 1M 286 machine.
Bit: 2Symbolic name: GACF_FORCETEXTBAND Meaning: Separate text band from graphics band. Forces separate band for text, disallowing 3.1 optimization where Text and
Graphics are printed in the same band. Word Perfect was
assuming text had to go in second band.
Apps:
WordPerfect
WIN.INI Line: WPWINFIL=0x0006
Problem: Can't print graphics in landscape mode. The
compatibility switch doesn't completely fix the
problem, just fixes it for certain memory
configurations.
Freelance
WIN.INI Line: rem=0x8022
Problem: Freelance couldn't print presentation (.pre) files.
Bit: 4Symbolic name: GACF_ONELANDGRXBAND Meaning: One graphics band only. Allows only one Landscape graphics band. Take as much memory as possible for this band. What
doesn't fit in that band doesn't print.
Apps:
WordPerfect
WIN.INI Line: WPWINFIL=0x0006
Problem: Can't print graphics in landscape mode. The
compatibility switch doesn't completely fix the
problem, just fixes it for certain memory
configurations.
Bit: 8Symbolic name: GACF_IGNORETOPMOST Meaning: Ignore topmost windows for GetWindow(HWND,GW_HWNDFIRST) Apps: CCMail
WIN.INI Line: ccmail=0x0008
Problem: CCMail would GP fault when running any Windows applet
from CCMail because it assumed the applet it starts
will be at the top of the window list when winexec
returns. Because of the addition of TOPMOST windows in
Win 3.1, this isn't the case. The compatibility bit
fixes this so GetWindow doesn't return a topmost
window.
Bit: 10Symbolic name: GACF_CALLTTDEVICE Meaning: Set the DEVICE_FONTTYPE bit in the FontType for TT fontsreturned by EnumFonts().Apps: Ami Pro
WIN.INI Line: Amipro=0x0010
Problem: Font mapping problems, described below.
WordPerfect
WIN.INI Line: win2wrs=0x1210
Problem: WordPerfect was assuming TT fonts enumerated by the
printer would have the device bit set. TT fonts are not
device fonts, so this bit wasn't set. There were
various font mapping problems, such as TNR appearing in
Script or Symbol.
Bit: 20Symbolic name: GACF_MULTIPLEBANDS Meaning: Manually break graphics output into more than one band whenprinting.Apps: Freelance
WIN.INI Line: Rem=0x08022
Problem: Freelance wouldn't print graphics when there was enough
memory and unidrv used only one band for printing. If
the first band was the entire page, it didn't issue any
graphics calls, thinking it was the text only band.
This forces unidrv to use multiple bands.
Bit: 40Symbolic name: GACF_ALWAYSSENDNCPAINT Meaning: SetWindowPos() must send a WM_NCPAINT message to all children, disallowing the 3.1 optimization where this message
is only sent to windows that must be redrawn.
Apps:
Pixie
WIN.INI Line: pixie=0x0040
Problem: File window overlaps the toolbox and doesn't repaint
when a new file is opened. Pixie used the receipt of
WM_NCPAINT messages to determine that they may need to
reposition themselves at the top of the list. Win 3.0
used to send the messages to windows even when they
didn't need to be sent; in particular if the window was
within the bounding rect of any update region involved
in a window management operation.
ObjectVision
WIN.INI Line: Vision=0x0040
Problem: Repaint problems with dialog boxes left on the screen
after file.open or file.new operations.
Cricket Presents
WIN.INI Line: cp=0x0040
Problem: Tool window is not available when opening the app.
Bit: 80Symbolic name: GACF_EDITSETTEXTMUNGE Meaning: Strings that are passed to Edit Controls by WM_SETTEXT are forced to upper case. Just Write was expecting this
behavior, which was a bug in 3.0.
Apps:
Just Write
WIN.INI Line: JW=0x42080
Problem: Just Write wouldn't change the extension in the
file.open dialog when opening a file of a different
format. Just Write calls SetDlgItemText to set the
default extension in edit controls during WM_INITDIALOG
processing. SetDlgItemText ultimately calls text
insert routine which had a bug in 3.0 where it
converted the case of the text passed in dependent on
edit control style. Thus, under 3.0, SetDlgItemText
was (wrongly) modifying the string passed in. The app
has worked around the bug in 3.0 and is now failing in
3.1 since the bug has been fixed. The compatibility
bit reverts to 3.0 behavior.
Bit: 100Symbolic name: GACF_MOREEXTRAWNDWORDS Meaning: Add 4 to the extra bytes (CBWNDEXTRA) in the window instance and class instance structures. In Windows 3.0, even if you
didn't allocate extra window/class words, you could still
access them and corrupt Windows internally. In Windows 3.1,
you are prevented from accessing extra words you didn't allocate
so that apps won't corrupt windows. This switch forces
extra words for all classes/windows created by the given
application.
Apps:
Compton's MM Ency
WIN.INI Line: TME=0x0100
Problem: Crashes choosing atlas. Caused by not initializing the
WNDCLASS.cbWndExtra field.
ExploreNet
WIN.INI Line: netset2=0x0100
Problem: Application error selecting update in "Input Form"
window. Caused by the app specifying 0 extra bytes
when creating the window class.
Aporia 1.4
WIN.INI Line: aporia=0x0100
Problem: Aporia icons don't appear on the desktop. Hangs the
system. App says it wants 1 extra byte in the
RegisterClass, then does a SetWindowWord (2 bytes),
then GetWindowLong (4 Bytes).
Bit: 200Symbolic name: GACF_TTIGNORERASTERDUPE Meaning: Don't enumerate Duplicate bit map fonts for TT fonts. Times New Roman was displayed and printed as a vector font. We
install bit map fonts for Arial and Times New Roman at sizes
8,10 (EGA resolution). When we enumerate fonts for face names
Arial and Times New Roman, we would enumerate the sizes
available in the bit map fonts and one size for the
corresponding true type font. This confused the font mapper
in WordPerfect. It would somehow get confused into believing
that a TNR font was available for only the two bit map sizes
and map a request for a larger size to a Roman vector font.
Apps:
Word Perfect
WIN.INI Line: Win2wrs=0x01210
Problem: Some fonts displayed as vector fonts. GDI will not
enumerate raster fonts which have the same face or
family name as a TT font if TT is enabled and the
compatibility bit is set.
Visual Basic
WIN.INI Line: vb=0x0200
Problem: Reports duplicate font sizes.
Bit: 800Symbolic name: GACF_DELAYHWHNDSHAKECHK Meaning: Don't check hardware handshaking on SetCommState(). Do not check hardware handshaking (CTS and DSR) on SetCommState().
(Reverts to 30 behavior.) Packrat could not Dial. It only
checked for DSR, but this is not set until carrier detect. A
bug existed in win30 where SetCommState never checked DSR and
CTS. If a serial printer was off-line, data would be sent to
the COM port anyway, causing lost data.
Apps:
Packrat
WIN.INI Line: packrat=0x0800
Problem: Packrat didn't dial using modem on COM2.
Microcourier
WIN.INI Line: mcourier=0x800
Problem: Couldn't connect to modem using COM2.
Bit: 1000Symbolic name: GACF_ENUMHELVNTMSRMN Meaning: Enumerates TmsRmn and Helv. Some apps are broken because they relied on 3.0 fonts Helv and Tms Rmn by name. Font
Substitution covers much of these problems but we cannot
legally enumerate Helv and Tms Rmn for future apps, so it was
dropped. We still have the exact same fonts, but now under
the names MS Sans Serif and MS Serif, and will enumerate them
as Helv and Tms Rmn when this bit is set. (We are allowed to
do this for backwards compatibility.)
Apps:
Spinnaker +
WIN.INI Line: plus=0x01000
Problem: Text alignment and spacing problems in buttons and
titles. Fix only works if Smallfonts come after serif
and sans serif entries. Setup does this automatically.
Milestones, etc.
WIN.INI Line: milesv3=0x1000
Problem: Text is unreadable when the app is started. App does
its own font mapping and gets confused when it can't
find Tms Rmn.
Guide
WIN.INI Line: guide=0x1000
Problem: Text problems.
Excel
WIN.INI Line: Excel=0x1000
Problem: Can't get past point where you have to enter a point
size in the tutorial.
WordPerfect
WIN.INI Line: win2wwrs=0x1210
Problem: Uses a vector font for TmsRmn.
Bit: 2000Symbolic name: GACF_ENUMTTNOTDEVICE Meaning: Turns off DEVICE_FONTTYPE. Some apps fail to enumerate more that one size of true type fonts because they interpret the
DEVICE_FONTTYPE flag incorrectly. They assume the font must
be device resident and disregard the case where the font is
downloaded (as TT can be). Therefore, when TT is correctly
enumerated with the device bit set, the apps check the device
capabilities to see if the printer can scale fonts. If the
device cannot, the app assumes one size of for the current
font. This problem is not seen on postscript printers which
can download and scale fonts, nor on dot matrix printers
which cannot download fonts. This Compatibility bit simply
checks all the above conditions and selectively turns the
DEVICE_FONTTYPE off.
Apps:
Pagemaker 4.0
WIN.INI Line: pm4=0x2000
Problem: Not all point sizes listed for some printers.
Designer 3.1
WIN.INI Line: designer=0x2000
Problem: Font size reverts to 6 point when selecting a TT font
in the font dialog.
Ascend 3.1
WIN.INI Line: planner=0x2000
Problem: TT fonts only allow one point size.
MGXDraw 3.0
WIN.INI Line: draw=0x2000
Problem: Shows no font sizes for TT fonts.
AccPack
WIN.INI Line: winsim=0x2000
Problem: Lists only one point size for TT fonts.
Charisma
WIN.INI Line: charisma=0x2000
Problem: Not all point sizes listed for some printers.
Persuasion
WIN.INI Line: pr2=0x2000
Problem: Lists only one point size for TT fonts.
Just Write
WIN.INI Line: jw=0x42080
Problem: Lists only one or two point sizes for TT fonts.
Bit: 4000Symbolic name: GACF_SUBTRACTCLIPSIBS Meaning: This flag affects the way window invalidation works for non- WS_CLIPSIBLINGS parent windows and their children (e.g.,
dialog boxes and dialog controls). Normally, if two
children of a non-WS_CLIPSIBLING parent overlap, and an area
that contains both of those windows is invalidated (either
by a call to InvalidateRect or through window
rearrangement), both of the windows will get invalidated,
even if one or both is WS_CLIPSIBLINGS. With
GACF_SUBTRACTCLIPSIBS, any sibling window underneath a
WS_CLIPSIBLINGS window will not be invalidated in the part
of the window that is beneath the WS_CLIPSIBLINGS window.
This situation arises most commonly when windows that are
supposed to appear overlapped don't seem to overlap
properly. Applications that implement drop down combo boxes
as child windows of dialog boxes will exhibit this problem
(e.g., Lotus Notes 2.1 drive drop downs). It's often hard to
tell whether a drop down is implemented as a top-level
window (e.g., the Windows system combo boxes) or as a child
window -- if there seem to be overlapping problems, then
GACF_SUBTRACTCLIPSIBS could be the solution.
Apps:
Lotus Notes 2.0 & 1
WIN.INI Line: _BNOTES=0x24000
Problem: Pull down drive list box pops down behind a list box
which is already on the screen.
Ingress
WIN.INI Lines: wagl=0x4000
waglr=0x4000
Problem: Overlapping child controls.
Bit: 8000Symbolic name: GACF_FORCETTGRAPHICS Meaning: Apps: Freelance
WIN.INI Line: rem=0x8022
Problem: Freelance wouldn't print TT unless print TT as graphics
was selected.
Bit: 10000Symbolic name: GACF_NOHRGN1 Meaning: This bit affects applications that depend on a bug in the 3.0 GetUpdateRect() function. Under 3.0, GetUpdateRect
would not always return the rectangle in logical DC
coordinates: if the entire window was invalid, the rectangle
was sometimes returned in window coordinates. This bug was
fixed for 3.0 and 3.1 apps in Windows 3.1: coordinates are
ALWAYS returned in logical coordinates. This bit re-
introduces the bug in GetUpdateRect(), for those
applications that depend on this behavior.
Apps:
MSDraw
WIN.INI Line: ED=0x00010000
Problem: Canvas not redrawn properly opening specific MSDraw
objects in Winword.
Bit: 20000Symbolic name: GACF_NCCALCSIZEONMOVE Meaning: 3.1 optimized WM_NCCALCSIZE if a window was just moving, where 3.0 always sent it. This bit causes it to be sent
always, as in 3.0.
Apps:
Lotus Notes
WIN.INI Line: _BNOTES=0x24000
Problem: Navigator bar of window fails to redraw when the window
is moved across the desktop.
Bit: 40000Symbolic name: GACF_SENDMENUDBLCLK Meaning: Passes double-clicks on a menu bar on to the app. With this bit set, if the user double clicks on the menu bar when a
menu is visible, we end processing of the menu and pass the
double click message on to the application. This allows Just
Write to detect double click on the system menu of a
maximized MDI child. The normal (and expected) behavior is
for Windows to detect the double click on a sys menu of a
maximized child and send the app a WM_SYSCOMMAND SC_CLOSE
message which is what happens with a non-maximized MDI child
window.
Apps:
Just Write
WIN.INI Line: JW=0x00042080
Problem: Sub-editors (such as footer and header editors)
couldn't be closed by double-clicking the system menu.
Bit: 80000Symbolic name: GACF_30AVGWIDTH Meaning: Changed the way we calculate avg width, this fixes it for postscript. Scale all fonts by 7/8. This flag has been
added for TurboTax for printing with pscript driver. Turbo
Tax has hard coded average width it uses for selecting fonts.
Since we changed the way we calculate avg width to match what
is in TT, Turbo Tax is broken.
Apps:
TurboTax
WIN.INI Line: turbotax=0x80000
Problem: 1040 tax forms wouldn't print correctly.
If a third party vendor fixes the problems in their application, they
can recompile it so that it requires Windows 3.1; the compatibility
bits will not be used. If the third party vedor wants their
application to run under Winodws 3.0 and 3.1, then they can change the
module name or edit the WIN.INI.
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