ListView WM_NOTIFY Message on x64 Returning Wrong Results

[SkinnyWhiteGuy <mleo2003@…>]

I'm on Windows 7 64-bit, trying to use a WM_NOTIFY function to detect when an item is clicked on. When I run the test script in 32-bit mode, everything works fine. When I run it in 64-bit mode, the Index returned is always 0, and the SubItem is the correct index I was looking for. I am using the example script from _GUICtrlListView_ClickItem help entry to test with. I played with the structs being used, changed them around, but it seems to be the data lParam is pointing to is not the sizes MSDN says they should be.

[Jon]

I'm not sure what you are reporting? A bug with a UDF? AutoIt? The help file example? Your script? I'm also not sure how I run the script to see whatever error you are talking about. I see a few lines with colored text? I click them, nothing happens? Is it supposed to do anything?

[Jon]

Nevermind. I see the output in the console now. The index is wrong on x64. A quick glance at the structures look like they are using the correct types. Might need Gary to look at this one before I dig around in there.

[Jon]

The NMITEMACTIVATE structure is being created as 48 bytes under Win32 and 64 under x64. It should be 72 bytes under x64 - not sure where the missing bytes are yet.

[SkinnyWhiteGuy <mleo2003@…>]

Sorry about that, should have mentioned the error was shown in the console window.

I wasn't sure if the Struct was too big, or too small. Dumping the binary data of the struct using this (right after $tInfo is created within either NM_CLICK or NM_DBLCLK),

ConsoleWrite(DllStructGetData(DllStructCreate("byte& DllStructGetSize($tInfo) &", DllStructGetPtr($tInfo)), 1) & @CRLF)

It looks as if the 3rd member (an int from $tagNMHDR) is sent as 64 bit, but should be 32 bit. I tried different alignments, to see if that would help, but there was no change.

[SkinnyWhiteGuy <mleo2003@…>]

Sorry, code in last post should be:

ConsoleWrite(DllStructGetData(DllStructCreate("byte[" & DllStructGetSize($tInfo) & "]", DllStructGetPtr($tInfo)), 1) & @CRLF)

[Valik]

If the types are correct but the size is wrong then it sounds to me like the structure is not being aligned correctly.

[Jpm]

May be the same problem as the one we fix in $tagNMLVKEYDOWN

[SkinnyWhiteGuy <mleo2003@…>]

Replying to Jpm:

May be the same problem as the one we fix in $tagNMLVKEYDOWN

Thanks for the suggestion, I tried it and it works for most cases, except the one I need. The MSDN article for this message says Index should return -1 when there is no item under the click (below the created items). With index changed to int_ptr, it returns 4294967295, which would be -1 as a 32 bit number.

Changing the alignment made the structure even smaller (60 bytes in x64), but still doesn't return the index clicked. When I dump the header after it was realigned, everything looks good, but the full message still shows extra null-byte padding where it doesn't need it.

[SkinnyWhiteGuy <mleo2003@…>]

Just on a hunch, I decided to check other messages related to the NMHDR struct, and other structs using WM_NOTIFY. So far, I found another help-file example that fails, but another one that works fine. The one that fails is _GUICtrlIpAddress_Create, and the one that works is _GUICtrlButton_Create. I'm not sure what the difference is, but at least I know now it's not related to just the ListView functions (nor is it my error).

[Jpm]

Fixed by revision [5922] in version: 3.3.7.0

[David Leigh <david@…>]

When executing _GUICtrlListView_SimpleSort example script on a 32 bit XP machine it works great, but on my 64 bit Win7 machine I get the following:

"C:\Program Files (x86)\AutoIt3\SciTE\AutoIt3Wrapper\AutoIt3Wrapper.exe" /run /prod /ErrorStdOut /in "C:\Program Files (x86)\AutoIt3\Examples\Helpfile\_GUICtrlListView_SimpleSort.au3" /autoit3dir "C:\Program Files (x86)\AutoIt3" /UserParams

+>14:32:09 Starting AutoIt3Wrapper v.2.0.1.24 Environment(Language:0409 Keyboard:00000409 OS:WIN_7/ CPU:X64 OS:X64)

Running AU3Check (1.54.19.0) params:-d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6 from:C:\Program Files (x86)\AutoIt3

+>14:32:09 AU3Check ended.rc:0

Running:(3.3.6.1):C:\Program Files (x86)\AutoIt3\autoit3_x64.exe "C:\Program Files (x86)\AutoIt3\Examples\Helpfile\_GUICtrlListView_SimpleSort.au3"

!===========================================================
+======================================================
-->Line(0061): $LVN_COLUMNCLICK
--> hWndFrom: 0x00000000000A0D1C
-->IDFrom: 3
-->Code: -108
-->Item: 0
-->SubItem: -1
-->NewState: 2
-->OldState: 0
-->Changed: 0
-->ActionX: 0
-->ActionY: 0
-->Param: 0
+======================================================
C:\Program Files (x86)\AutoIt3\Include\GuiListView.au3 (6769) : ==> Array variable subscript badly formatted.:
$b_desc = $vDescending[$iCol]
$b_desc = $vDescending[ ^{ERROR
->14:32:11 AutoIT3.exe ended.rc:1}

Exit code: 1 Time: 3.246

Adding #AutoIt3Wrapper_UseX64=n fixes it.

This looks to be the same issue as discussed in this thread (wrong structure size in x64), but I thought I'd submit it just in case.
Thanks!

[TicketCleanup]

Automatic ticket cleanup.

[TicketCleanup]

Automatic ticket cleanup.

[Jessie]

Thanks guys, I just about lost it loonikg for this.

[bernd]

If you change the following in the file StructurConstants.au3 then it works with 32bit and 64bit.

from

Global Const $tagNMLVKEYDOWN = "align 1;" & $tagNMHDR & ";word VKey;uint Flags"

to

Global Const $tagNMLVKEYDOWN = $tagNMHDR & ";word VKey;uint Flags"

This probably applies to other structures in this file.

[bernd]

Forgot to mention that the bug in the current version is still available.