[Bug 49964] New: 32-bit dxdiag doesn't support '/64bit' command line switch (launch 64-bit dxdiag)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49964

            Bug ID: 49964
           Summary: 32-bit dxdiag doesn't support '/64bit' command line
                    switch (launch 64-bit dxdiag)
           Product: Wine
           Version: 5.18
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: programs
          Assignee: wine-bugs at winehq.org
          Reporter: focht at gmx.net
      Distribution: ---

Hello folks,

as it says. Encountered with some Wargaming titles in 64-bit WINEPREFIX. It
causes a message box to be shown which stays behind the main game window. Not
harmful but still worth to get rid of.

--- snip ---
$ pwd
/home/focht/wine-games/wineprefix64-wargaming/drive_c/ProgramData/Wargaming.net/GameCenter

$ WINEDEBUG=+process,+msgbox wine ./wgc.exe --disable-gpu >>log.txt 2>&1
...
03c0:trace:process:CreateProcessInternalW app (null) cmdline L"dxdiag /whql:off
/64bit /t C:\\users\\focht\\Temp\\dxdiag_cat_852.txt.tmp"
...
03c0:trace:process:NtCreateUserProcess
L"\\??\\C:\\windows\\system32\\dxdiag.exe" image
L"C:\\windows\\system32\\dxdiag.exe" cmdline L"dxdiag /whql:off /64bit /t
C:\\users\\focht\\Temp\\dxdiag_cat_852.txt.tmp" parent (nil)
...
03c0:trace:process:NtCreateUserProcess
L"\\??\\C:\\windows\\system32\\dxdiag.exe" pid 03cc tid 03d0 handles 0xf8/0xfc
03c0:trace:process:CreateProcessInternalW started process pid 03cc tid 03d0
...
03d0:trace:msgbox:MSGBOX_OnInit L"Usage: dxdiag [/whql:off | /whql:on] [/t
filename | /x filename]" 
--- snip ---

Wine source:

https://source.winehq.org/git/wine.git/blob/5d5102f8498413f4b7e11f7da0509e7717fb3735:/programs/dxdiag/main.c#l94

NOTE:

https://stackoverflow.com/questions/28189656/getting-output-from-dxdiag-in-c-sharp/28190692

--- quote ---
DxDiag is quite cranky on a 64-bit OS. The 32-bit version and the 64-bit
version accept different command line switches and it doesn't give a peep when
you use the wrong one. The /x option simply does not work when you try to use
the /64bit option on the 32-bit version. And the 64-bit version does not accept
/64bit. You'll have to start the 64-bit version explicitly when you run on a
64-bit OS and your program runs in 32-bit mode.
--- quote ---

The '64bit' command line switch is simply ignored by the 64-bit executable and
not listed in the command line help.

$ wine --version
wine-5.18-303-g5d5102f8498

Regards

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