Googling reveals this is a known bug in WinXP when themes are enabled. You can verify this by switching a WinXP box to classic theme and then enlarging a ListView (works fine).
So... the obvious workaround is to turn off the theme for your ListView (at least temporarily) however, AHK does not turn off the theme for the header control in that case. Here you can see the ListView loses its theme, but not its header control.
Code:
Gui, -Theme
Gui, Add, ListView, r10, Column1
Loop, *.*
LV_Add("",A_LoopFileName)
Gui, Show
return
GuiClose:
ExitApp
So... the remaining problem is to discover how to disable (and then re-enable) the theme of a control after it has been created. You will probably need the header's hWnd for this, which can be retrieved with a simple message.
Code:
Gui, Add, ListView, r10 vLV HWNDhLV, Column1
Loop, *.*
LV_Add("",A_LoopFileName)
Gui, Add, Edit, vEdit Number, 100
Gui, Add, Button, x+10 Default, Resize
SendMessage, 0x101F,,,,ahk_id %hLV% ;LVM_GETHEADER
hWnd := ErrorLevel
Gui, Show
return
GuiClose:
ExitApp
ButtonResize:
Gui, Submit, NoHide
ControlMove,,,,,%Edit%, ahk_id %hWnd%
GuiControl, MoveDraw, LV
return
I got as far as
Header Control Styles, which seems like a dead end.
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