This PR enables the developers to include the CJK standard fonts into ReactOS by adding them in Folder modules/optional. This feature is for test purpose only. You may not use the fonts illegally.
The embeddable font files are: mingliu.ttc, simsun.ttc, mssong.ttf, msgothic.ttc, msmincho.ttc, gulim.ttc and batang.ttc.
CORE-9619
CORE-12683
Supersedes PR #612.
* [USETUP] Implement the internal MUI routines for text manipulation based on its ID and implement text resource based IDs
USETUP (the 1st stage text mode setup module) bases upon MUI (Multilingual User Interface) sub-component of USETUP which is responsible for the ability into translating the MUI pages (each page having corresponding properties like X, Y coordinates, text flags and text string buffer) in various languages.
The only problem, as of now, is that whenever you want to modify a certain property of a page, such as removing a text from the said page in the screen, you've got to rely on using CONSOLE_* specific functions and calling with hardcoded parameters, namely the coordinates.
This can become a problem as not every localized (translated) MUI page has the same properties for each language and this could lead to various issues. Therefore, assigning each entry with an ID you can remove a text by only giving its ID (and the entry page number) without having the need to specify the coordinates
as the internal MUI routine, MUIGetEntry(), automatically retrieves the entry with respective data fields.
The following commit implements:
- MUIGetEntry()
- MUIClearText()
- MUIClearStyledText()
- MUISetText()
- MUISetStyledText()
- Now the X and Y coordinate members of MUI_ENTRY are of SHORT integer type, for the sake of the general code as most of the coordination values, even the COORD structure itself, has the coordination points as SHORTs and not BYTEs.
The following MUI functions will be used to manipulate text based resources depending on their ID from the corresponding MUI entry.
* [USETUP] Make CONSOLE_ClearTextXY function public so that we can use across other files.
* [USETUP] Implement the IDs for each text MUI entry in locale files.
This mechanism follows the same principle of resource IDs in Win32 applications. Static text is merely a resource that doesn't get changed programmatically for whole of its lifetime whereas dynamic resources can change during the lifetime of the program depending on the algorithm (for example, hide that piece of text and set another one, etc.).
* [USETUP] Remove the "Press ENTER to continue" message prompt when the partition formatting begins.
CORE-15901
This fixes display reset transition when an external module acquired
INBV ownership and then released it, similarly to what was done in
commit 0ad65796 for VIDEOPRT.
For this a backup screenbuffer is used to store the contents of the
screen just before an INBV screen acquire transition, and these contents
are restored when it is detected that INBV ownership has been released.
Also, the active text font associated with the active console code-page
is restored, as well as the cursor state and shape.
In addition, any user of BLUE.SYS is now required to explicitly issue
a new IOCTL_CONSOLE_RESET_SCREEN to either enable or disable the screen.
This allows avoiding nasty unwanted screen mode switches when a handle
to the \Device\BlueScreen device is opened but no screen mode switch was
actually wanted - This "fixes" this annoyance on ReactOS and Windows,
when these are running witha VGA-compatible video driver and one wants
to look at properties of the \Device\BlueScreen device using
Sysinternals' WinObj.
Following this, we don't need to check anymore for explicit INBV
ownership by issuing calls to InbvCheckDisplayOwnership(), but instead
we check whether the screen has beeen manually enabled using the
aforementioned IOCTL. This partly supersedes commit 8b553a4b, and allows
fixing the second bug, namely that if we start ReactOS without the
/NOGUIBOOT option (and thus, INBV is active during boot), USETUP would
not show up anything because BLUE.SYS wouldn't display anything on screen.
See CORE-15901.
[USETUP][CONSRV] Call IOCTL_CONSOLE_RESET_SCREEN to tell BlueScreen device to enable the screen.
CORE-16274
SETUPLIB:
=========
- Find the system partition initially when we create the list of
partitions.
- Split the old CheckActiveSystemPartition() helper in two helpers:
FindSupportedSystemPartition() and SetActivePartition(). This allows
simplifying slightly the former one, and allows the user, in an
interactive situation, to decide whether the "supported system
partition" found can actually be used or not.
- Remove the "OriginalSystemPartition" hack in the PARTLIST structure.
- Add a note regarding the SystemPartition member in PARTLIST.
USETUP:
=======
- Use the introduced helpers from above. If the "system" partition we
are going to use, in case we install ReactOS on a fixed disk, is *NOT*
the same as the original one (e.g. because it is detected to be not
supported by ReactOS...), display an informative screen to the user
and let him confirm whether or not he wants to change the partition.
If we install on a fixed disk, try to find a supported system partition
on the system. Otherwise if we install on a removable disk, use the
install partition as the system partition instead.
This allows providing a fix for CORE-16274.
SETUPLIB:
=========
- Remove useless HiddenSectors member in PARTENTRY structure.
- InsertDiskRegion() helper returns a BOOLEAN success.
- CreateInsertBlankRegion() helper sets LogicalPartition.
- Simplify the InitializePartitionEntry() helper so that its PartEntry
parameter is clearly the one that is being initialized (i.e. converted
from a blank region to) an actual partition, and use the helper
CreateInsertBlankRegion(). The calculations for the StartSector and
SectorCount are exactly equivalent with the old version of this
function. Also make it return a BOOLEAN success instead.
+ Add some extra validation checks.
+ Adjust CreatePrimaryPartition(), CreateExtendedPartition() and
CreateLogicalPartition() in this regard.
- Better handling of "RAW"-mounted partitions: treat them as
"Unformatted" only if they are RAW *AND* their PartitionType is one of
those associated with FAT file-system. Otherwise we cannot decide
whether they are indeed unformatted or have an unknown file-system on
them, therefore treat them as the latter.
In this regard, the IsSupportedActivePartition() helper should not
look for FileSystem == RAW but instead only look whether the partition
is Unformatted.
This should help with situations similar to the one described in CORE-16274
where a partition with a genuine file-system but not recognized by
ReactOS (because we currently do not have the EXT2/3/4 filesystem
driver loaded during 1st-stage setup due to commit 5a650f6b) and
therefore mounted as RAW, was thought to be unformatted.
USETUP:
=======
- Use the "global" SystemPartition pointer: this is the "system"
partition we will actually use. It can be different from the actual
one of the computer, for example when we install ReactOS on a
removable disk. This allows also to simplify the code.
- Remove the single-used DestinationDriveLetter variable.
- Remove BuildInstallPaths() helper and use InitDestinationPaths()
directly instead.
- Always mention the disk where the partition being formatted is.
- Cleanup old code comments, add assertions here & there...
- Windows requires 16 bytes of response data.
- Add the PLUGPLAY_CONTROL_USER_RESPONSE_DATA type.
- Usetup and Umpnpmgr must fail if NtPlugPlayControl(PlugPlayControlUserResponse) does not return STATUS_SUCCESS.
Fixes GCC 8 warning:
base/setup/usetup/usetup.c:3407:78: error: '%S' directive writing up to 521 bytes into a region of size 200 [-Werror=format-overflow=]
"Setup is currently unable to check a partition formatted in %S.\n"
^~
base/setup/usetup/usetup.c:3406:9: note: 'sprintf' output between 128 and 649 bytes into a destination of size 260
sprintf(Buffer,
^~~~~~~~~~~~~~~
"Setup is currently unable to check a partition formatted in %S.\n"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"\n"
~~~~
" \x07 Press ENTER to continue Setup.\n"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
" \x07 Press F3 to quit Setup.",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
PartEntry->FileSystem);
~~~~~~~~~~~~~~~~~~~~~~
Nowadays more and more people try to install ReactOS from removable
drives (e.g. USB sticks) onto fixed HDDs, or try to install it into
USB sticks too.
Both fixed and removable drives, as well as partitions on these, are
represented in NT using the same device name format:
\Device\HarddiskM\PartitionN ,
with an increasing disk number M. Using this number for building the
corresponding firmware-specific ARC multi(x)disk(y)rdisk(z) path used
by the NT/ROS loader (FreeLdr, ...) is then prone to error since there
may have been removable drives inserted and accounted for in the
calculation of the disk number. These drives must be correctly
subtracted in order to generate the correct ARC path, valid once all
the removable drives have been ejected (which should also be the
situation seen from the BIOS when booting up, except of course if you
boot on a USB stick).
This problem is now solved. Note that it matters only for the disks
that have also been enumerated by the firmware (BIOS; Int 13h). We
don't have to care about the other drives, since the ARC path will be
of a different format and will not use the disk number (instead, the
SCSI coordinates are used).
We also try to enumerate all the disks found in all the possible disk
adapters and controllers enumerated in the Hardware registry tree
(and that are visible by FreeLdr) in order to cover all.
Finally, we detect whether a disk reports as a "super-floppy", i.e.
an unpartitioned disk with a valid VBR. This is indeed how a standard
floppy disk looks like, or how USB sticks are partitioned on Windows.
Such disk is reported has having only one single partition starting at
the beginning of the disk, with partition number == 0, its type being
FAT16 non-bootable.
This allows us to forbid creating any new partitions on such disks.
Note that accessing either \Device\HarddiskN\Partition0 or Partition1
on such a disk returns the same data.
Note also that on the contrary, regular MBR-partitioned disks would
report at least four partitions entries, instead of just one.
The other improvements are:
- Do *NOT* write any MBR on a disk partitioned as "super-floppy".
CORE-13703
- Fix the computed disk identifier, of format: %08x-%08x-%c .
The numbers are respectively the checksum of the first sector, and
the disk signature. The terminating letter is A or X, depending
whether the first sector ends with 0x55AA/0xAA55 or not (see also
commit 5053f1f5).
- Warn if the user attempts to install ReactOS on a disk that is not
visible by the firmware of his computer, because it may not be
bootable.
- Add also some validation ASSERTs and simplify the code here and there.
- The installation partition is called "InstallPartition", while the
global "CurrentPartition" is the disk region currently selected in
the partition UI list, on which prtitioning operations are effectued.
- Extend CheckActiveSystemPartition() to use an optional alternative
disk or partition in case the actual system partition (present in the
first disk) cannot be used, e.g. because we don't support writes on it.
- Find or set the active system partition only once, when we start the
formatting stage. If the system partition is to be created in some
non-partitioned space, we create it.
- A file-system check is always scheduled for both the system and the
installation partitions.
- If the system partition was already formatted (which usually means
that it already existed on the system), don't ask for formatting it.
CORE-13205
- For each partition to be formatted, the file-system menu list is
re-created, in order to display only the FSes that are compatible
with the selected partition, and allow to give the user the choice
to keep the existing file-system only if the selected partition was
already formatted.
- Check whether the user attempts to delete the partition on which
the installation source is present, only if it is not "new" and is
formatted.
- Check first whether the current partition is the system partition,
before displaying the CONFIRM_DELETE_SYSTEM_PARTITION_PAGE.
- Make some partitioning functions not dependent on the selected "CurrentPartition".
- Add some sanity checks.
- Improve some of the "is-partitioned" checks.
Similarly to FMIFS this structure should be private. Instead file-system
names are passed to the helper functions, allowing to use the names
returned by the FS drivers. The names are then internally mapped to the
corresponding FS providers.
In particular this allows to handle the "RAW" file-system and to assign
the 'Unformatted' flag to partitions having this FS.
Finally this helps us refining the checks performed to see whether the
current "active" system partition uses a supported file-system.
- Within the function's body code, check the status values returned by the called functions.
- Change the BuildInstallPaths's function type to NTSTATUS instead of VOID (and check the status of InitDestinationPaths() as well.
By default, we still fallback to FAT if nothing asked, or if there
is an invalid input.
0 is FAT, 1 is BtrFS. This can be grown as soon as we add more IFS.
- The converter is code7bit I made. code7bit: https://github.com/katahiromz/code7bit
- This converter converts non-clean characters in string literals.
- However I couldn't erase a ton of codepage C4819 warnings.
- CORE-15447
You can edit an European source file as follows:
- Right click the file in the Solution Explorer.
- Select "Open With...".
- Choose "C++ Source Code Editor (with encoding)".
- Choose "Central European (Windows) - Codepage 1260".
- Add checks for GPT disks and either fail or ignore the disk,
depending on the operation being executed.
[USETUP][REACTOS] Display the disk style more accurately.
Always perform the partition validity checks when creating new
primary/extended/logical partitions, and also when a new partition
is automatically created when unpartitioned space is selected for
ReactOS installation.
CORE-12246
Simplified implementation of the proposed solution by George Bișoc
and revised by Victor Perevertkin from PR #952.
NOTE: For whatever reason ERROR_INSTALL_BOOTCODE and ERROR_WRITE_BOOT
seem to be redundant with each other. To be investigated...
Most of Linux filesystems have the MBR ID assigned as 0x83 and when the user chooses BTRFS upon partitions page wizard, we're thinking of the partition as having Ext2 filesystem which is wrong and misleading.
- SETUPLIB and USETUP: Convert PARTENTRY::DriveLetter to WCHAR.
- SETUPLIB: Retrieve volume label.
- SETUPLIB and USETUP: Move the partition types (IDs) table from
USETUP to SETUPLIB so that they can share it with the 1st-stage
GUI installer too. Also take the opportunity to update the table
with information from http://www.win.tue.nl/~aeb/partitions/partition_types-1.html
and cross-checked with the list from Paragon Hard-Disk Manager.
- USETUP: Simplify PrintPartitionData().
- Add some code comments.
- Use adequate access flag when opening symbolic links.
- Simplify the prototype of UpdateRegistry() since now both Setup INF
handle and settings lists are inside the USETUP_DATA structure.
This means, call in the correct order the user callback with the correct
parameters (in particular the correct paths for file copy operations),
and check also for the callback returned value to know whether or not to
continue the file operations.
This allows using some of the SetupApi.dll functions when SETUPLIB is
used in the (Win32) GUI 1st-stage installer "REACTOS", while using the
custom implemented NT-aware functions in "USETUP".
- Add support for delete and move/rename operations, which are needed
for implementing ReactOS upgrading support.
- Use cabinet contexts.
- Use standard LIST_ENTRY structures for implementing the lists.
- Move the path-building hack code in SetupCommitFileQueueW() that had
been introduced in r66604 (97bb83f) out of the file-queues code.
- Make the function prototypes compatible with win32's setupapi functions.
- Fix the format of the data passed to the custom notification handler.
- Adjust the file-copy callback to correctly use its arguments (setupapi-compatible).
- Move a great deal of global variables into the USETUP_DATA structure
(the SetupInf, the SetupFileQueue, the generic lists...).
- Place the common setup initialization code into an InitializeSetup()
routine, and the cleanup code into FinishSetup().
- Implement the setup-code part support for the TXTSETUP.SIF setup
source path override variables "SetupSourceDevice" and "SetupSourcePath"
(see CORE-9023); support for them in SETUPLDR will be added later.
- It can therefore be also used by the 1st-stage GUI setup.
- Rename some function parameters to clarify what they should be.
Based on:
svn path=/branches/setup_improvements/; revision=75750
Additions:
- Use explicit __cdecl calling convention for variadic functions.
- Fix also the whitespace in consup.h.
svn path=/branches/setup_improvements/; revision=75749
[USETUP] Improve usage of ERROR_TXTSETUP_SECTION and ERROR_CABINET_SECTION error codes, correctly display associated error message, and remove a deprecated string.
- Apart from allowing a UI cache variable that may be used when
displaying GENERIC_LIST_ENTRY-ies, do not store any display strings
associated to these list entries. They should be instead computed only
when initializing a list UI (or a combo-box or list control if the
code is used in Win32 environment).
For this matter a callback is provided to InitGenericListUi() that
does the job of computing the displayed string corresponding to a
given GENERIC_LIST_ENTRY.
- Simplify the calls to InitGenericListUi(), and refactor the
RestoreGenericListUiState() function.
- Use for-loops for iterating over GENERIC_LIST items.
- Adapt the storage data format for lists of settings items.
- The txtsetup.sif INF format specified in LoadSetupInf() should not be
INF_STYLE_WIN4 (to be investigated...).
- Use OBJ_CASE_INSENSITIVE when initializing object attributes
(no actual reason why to keep case sensitivity there).
- Check the success of a RtlStringCchPrintfW call in EnumerateReactOSEntries().
- Explicitly check for returned STATUS_NOT_SUPPORTED from ChkdskPartition()
or FormatPartition(), and display an appropriate error message.
- Remove some left-over comments but also explain why I kept some
commented code (mainly for future reference).
Only convert to ANSI when needed (e.g. in the display code for usetup).
The 1st-stage GUI setup will however use the UNICODE strings directly.
svn path=/branches/setup_improvements/; revision=75753
[SETUPLIB] Copy the mui* files from usetup into the setuplib for later usage, and add mui.c to build.
svn path=/branches/setup_improvements/; revision=75711
[SETUPLIB][USETUP] Start massaging the MUI files and split up what concerns only the usetup "resources",
and what concerns general language parameters (in the setuplib).
It may be interesting to retrieve the language parameters
from INF file (e.g. intl.inf) (suggested by Giannis).
svn path=/branches/setup_improvements/; revision=75715
[SETUPLIB] Add the necessary headers to mui.c to be able to compile.
[USETUP] Comment out the languages that don't have any resources.
svn path=/branches/setup_improvements/; revision=75716
[SETUPLIB][USETUP] Adjust MUI and settings code.
- Re-enable settings code concerning language, keyboards & layout
in the setuplib, and remove the old code in usetup.
- Remove useless code in setuplib's mui.c.
- Rename usetup's MUI "LanguageList" into "ResourceList" so as to
avoid colliding with the "LanguageList" of setuplib.
- Add the magic CMakeLists line "add_definitions(${I18N_DEFS})" that
I forgot previously, that caused the "LanguageList" of setuplib to be empty!
The code compiles and works during my tests.
svn path=/branches/setup_improvements/; revision=75717
[SETUPLIB] Change some string pointer types & function prototypes so that the usetup-specific
"SelectedLanguageId" variable is not used in the library.
svn path=/branches/setup_improvements/; revision=75719
[SETUPLIB] Change some function prototypes so that the usetup-specific "SelectedLanguageId" variable is not used in the library.
Also, make AddEntriesFromInfSection(), DefaultProcessEntry() and the typedef PPROCESS_ENTRY_ROUTINE private again.
svn path=/branches/setup_improvements/; revision=75720
svn path=/branches/setup_improvements/; revision=75724
[USETUP] Code adaptations.
- Transform some do{}while() loops into while(){} ones, since the lists on which we work may only contain one single {NULL} element.
- Modify MUIGetOEMCodePage() call after r75719.
- Use PCWSTR where needed.
svn path=/branches/setup_improvements/; revision=75722
[USETUP] Adjust some MUI & settings calls, following the commits r75719, r75720 and r75721.
svn path=/branches/setup_improvements/; revision=75723
[INPUT.CPL] Adjust inclusion of "muifonts.h" (commit 3dbd44f) due to changes introduced in r75711 and r75715.
This code is moved ther since it'll be needed for 1st-stage GUI
installer as well.
The code dealing with keyboard layouts is however not moved yet,
since it uses MUI* functions from usetup.
I'll try to think how to include that in setuplib...
svn path=/branches/setup_improvements/; revision=75701
Move the bootsup.c code into the setuplib, as the code is generic
enough to be used by both USETUP and the 1st-stage GUI installer.
svn path=/branches/setup_improvements/; revision=75674
This helper is inspired by the reactos/reactos.c!LoadGenEntry() function.
Use this helper in the different Create*List() functions.
svn path=/branches/setup_improvements/; revision=75700
- Move several global setup variables into a structure "USETUP_DATA",
similar to the syssetup structure "SETUPDATA" (or the WIP 1st-stage
installer structure of the same name), so that these variables can be
set easily by different helper setup functions;
- Move CheckUnattendedSetup() and GetSourcePaths() to setuplib and make
CheckUnattendedSetup() use the USETUP_DATA structure;
- Add a LoadSetupInf() function that loads the txtsetup.sif file
(factoring out the corresponding code in USETUP);
- Add a InstallSetupInfFile() function (that I'll probably rename later on)
whose purpose is to create a valid "$winnt$.inf" setup installation file
in the ReactOS\system32 directory, which should help the 2nd-stage installer
to correctly retrieve the source installation media we used during 1st-stage,
and contain the unattended setup lines copied from unattend.inf. This is
done in a Windows-compatible way.
svn path=/branches/setup_improvements/; revision=75518
[USETUP] Close the txtsetup.sif file at the end of the operations.
svn path=/branches/setup_improvements/; revision=75539
They currently do nothing, since the getter functions don't actually
capture (copy) the strings but merely return pointers to read-only strings.
But the calls are placed here for consistency, because if one day the
getters' implementation is changed so that strings are captured, it would
then be needed to free the allocated buffers.
In addition, fix a buggy call to INF_GetData() -- should be instead
INF_GetDataField() -- in AddSectionToCopyQueue().
svn path=/branches/setup_improvements/; revision=75516
Remove the commented-out IsValidPath() in that file, and remove
as well the temporary prototypes in regutil.c .
svn path=/branches/setup_improvements/; revision=75249
Split the registry helper code into registry utility functions
(create/mount/unmount/verify hives) and registry creation code
(the rest: initializing the system hives) and move it in the
setup library.
svn path=/branches/setup_improvements/; revision=75247
[USETUP][SETUPLIB] Improve how the Setup* INF APIs are interfaced in the code.
Define prototypes compatible (including their calling convention)
with the ones defined by setupapi (.h/.dll) so that it can be possible
to either use an internal implementation of these functions (via the
INFLIB library) as currently being done, or using imported setupapi
functions, as would be done by the future 1st-stage GUI installer.
[SETUPLIB] Cleanup the registry.c file and use the infsupp.h header.
svn path=/branches/setup_improvements/; revision=75345
svn path=/branches/setup_improvements/; revision=75346
[USETUP][SETUPLIB] Move some INF-related code from usetup to the setuplib.
- Move the generic INF_GetDataField() and INF_GetData() helpers to
setuplib, and rework them a bit so that they explicitly call setupapi
functions (or implementations thereof when being used in usetup);
- Rework the headers in accordance;
- Fix compilation in lib/registry.c .
- Fix compilation when these headers are used withing usetup (who
doesn't use setupapi.dll) and "reactos" (the 1st-stage GUI installer
that uses setupapi.dll).
svn path=/branches/setup_improvements/; revision=75515
svn path=/branches/setup_improvements/; revision=75537
svn path=/branches/setup_improvements/; revision=75538
- As GetSourcePaths() is used once in USETUP to initialize global
UNICODE_STRING path strings once, move it out of drivesup.c and
put it in usetup.c. Then remove drivesup.c : 1 file less!
- Move some INF file prototype declarations out of usetup.h and
inside inffile.h where they should better be, as inffile.h and .c
is the glue code for the INF library, defining similar functions
as the ones in setupapi.dll.
- I rename our local SetupOpenInfFileW() into SetupOpenInfFileExW()
because the latter one takes an extra user-provided LCID parameter,
and this is this one that we use in USETUP.
- Make 'UNICODE_STRING SourcePath;' visible only inside usetup.c
(not used elsewhere).
- Implement installation path validity check in case we are either
in repair/update, or unattended setup mode. If the path is detected
as invalid, then we fall back into manual path specification
(for now...; note that we could instead fail the installation too).
svn path=/branches/setup_improvements/; revision=75246
- Modify a bit the page flow so that the upgrade page is inserted before
the Device-settings page, and after the Install-Intro page.
- Insert some extra 'RepairUpdateFlag' checks in SelectPartitionPage() and
InstallDirectoryPage() to take specific actions in case the flag is TRUE.
svn path=/branches/setup_improvements/; revision=74576
svn path=/branches/setup_improvements/; revision=75525
Implement work-in-progress code that, when upgrading an existing
ReactOS installation, verifies whether the (existing) system registry
hives are valid (by loading & unloading them, this allows using the
built-in repair functionality if needed), or not.
If a given hive cannot be repaired successfully, it is backed up
(with a '.brk' extension, "brk" as "broken"), then is marked up for
recreation.
When all hives have been checked, if there are any hive that needs
to be recreated, we recreate its hive file, mount it, but we do *NOT*
mount the other valid existing hives for update. We create instead
dummy registry hives so that we can actually use, as the update code,
the same one as the one used when fully creating the registry hives
for a clean installation (of course, this choice can be improved later on).
The update code (i.e. the same as the registry clean-install one) then
adds the registry keys & values, either putting them in the dummy
registry hives (the ones that we don't want to recreate) or in the
registry hive that is recreated.
At the end, the (re)created registry hives are flushed back to disk,
and a copy of them (under a '.sav' extension) are created, so that they
can be used for restoration purposes if 2nd-stage (and up) goes berserk.
Extra fixes:
- Use the correct structure member field when initializing the
'InstallDir' variable, when performing an upgrade.
- CreateNestedKey() should be better analysed to see whether it correctly
creates the full registry path compatible with volatile/non-volatile keys
(under inspection).
svn path=/branches/setup_improvements/; revision=75010
