Identifying specific ListView columns on double click / mouseover

schliden · May 21, 2007

I have a ListView control with 5 columns:

1. A Checkbox (to enable/disable selection)

2. A Count

3. A Source

4. A Target

5. A Status

I have used the following code:

CODE

; global constant to support ListView events

Global Const $WM_NOTIFY = 0x004E

;ListView Events

Global Const $NM_FIRST = 0 - 0

Global Const $NM_LAST = 0 - 99

Global Const $NM_OUTOFMEMORY = $NM_FIRST - 1

Global Const $NM_CLICK = $NM_FIRST - 2

Global Const $NM_DBLCLK = $NM_FIRST - 3

Global Const $NM_RETURN = $NM_FIRST - 4

Global Const $NM_RCLICK = $NM_FIRST - 5

Global Const $NM_RDBLCLK = $NM_FIRST - 6

Global Const $NM_SETFOCUS = $NM_FIRST - 7

Global Const $NM_KILLFOCUS = $NM_FIRST - 8

Global Const $NM_CUSTOMDRAW = $NM_FIRST - 12

Global Const $NM_HOVER = $NM_FIRST - 13

Global Const $NM_NCHITTEST = $NM_FIRST - 14

Global Const $NM_KEYDOWN = $NM_FIRST - 15

Global Const $NM_RELEASEDCAPTURE = $NM_FIRST - 16

Global Const $NM_SETCURSOR = $NM_FIRST - 17

Global Const $NM_CHAR = $NM_FIRST - 18

Global Const $NM_TOOLTIPSCREATED = $NM_FIRST - 19

;Register user defined function "exEvents" for known Windows Messages $WM_NOTIFY (use to trap double click in ListView)

GUIRegisterMsg($WM_NOTIFY, "exEvents")

....

;------------------------------------------------------------------------

; Description: $WM_NOTIFY event handler

;------------------------------------------------------------------------

Func exEvents($hWndGUI, $MsgID, $WParam, $LParam)

Switch $WParam

Case $ListView1

$tagNMHDR = DllStructCreate ( "int;int;int",$LParam) ;NMHDR (hwndFrom, idFrom, code)

$code = DllStructGetData ( $tagNMHDR, 3)

Switch $code

Case $NM_DBLCLK

_EditListItem($ListView1,$cListColTarget)

Case $NM_HOVER

_HoverListItem($ListView1,$cListColSource)

Endswitch

endfunc

to allow doubleclick handling.

(I don't know if this is the correct way, but it seems to work)

I am, however, unable to detect the specific column that is double-clicked.

Is it possible to detect which column is double-clicked ?

________________________

Also, I don't seem to be able to get Case $NM_HOVER to work ?

What I would like to do is display a tooltip that expands the full text of the item in the listbox onmouseover.

TIA

GaryFrost · May 21, 2007

; Events - ListView
#include <GuiConstants.au3>;Inclusion file for the GUI interface controls
#include <GuiListView.au3>

Global $ListView
Global Const $WM_NOTIFY = 0x004E
Global Const $DebugIt = 1

;ListView Events
Global Const $NM_FIRST = 0
Global Const $NM_LAST = (-99)
Global Const $NM_OUTOFMEMORY = ($NM_FIRST - 1)
Global Const $NM_CLICK = ($NM_FIRST - 2)
Global Const $NM_DBLCLK = ($NM_FIRST - 3)
;~ Global Const $NM_RETURN = ($NM_FIRST - 4)
;~ Global Const $NM_RCLICK = ($NM_FIRST - 5)
;~ Global Const $NM_RDBLCLK = ($NM_FIRST - 6)
;~ Global Const $NM_SETFOCUS = ($NM_FIRST - 7)
;~ Global Const $NM_KILLFOCUS = ($NM_FIRST - 8)
;~ Global Const $NM_CUSTOMDRAW = ($NM_FIRST - 12)
;~ Global Const $NM_HOVER = ($NM_FIRST - 13)
;~ Global Const $NM_NCHITTEST = ($NM_FIRST - 14)
;~ Global Const $NM_KEYDOWN = ($NM_FIRST - 15)
;~ Global Const $NM_RELEASEDCAPTURE = ($NM_FIRST - 16)
;~ Global Const $NM_SETCURSOR = ($NM_FIRST - 17)
;~ Global Const $NM_CHAR = ($NM_FIRST - 18)
;~ Global Const $NM_TOOLTIPSCREATED = ($NM_FIRST - 19)

#endregion End Global variables

Opt("WinTitleMatchMode", 2)

$main_GUI = GUICreate("GuiRegisterMsg Test", 225, 400, 300, 10, BitOR($WS_THICKFRAME, $WS_SIZEBOX))

$ListView = GUICtrlCreateListView("Entry Name|Category", 5, 75, 195, 280, BitOR($LVS_SORTASCENDING, $LVS_SINGLESEL))
_GUICtrlListViewSetColumnWidth ($ListView, 0, 100)
_GUICtrlListViewSetColumnWidth ($ListView, 1, 100)
GUICtrlSendMsg($ListView, $LVM_SETEXTENDEDLISTVIEWSTYLE, $LVS_EX_GRIDLINES, $LVS_EX_GRIDLINES)
GUICtrlSendMsg($ListView, $LVM_SETEXTENDEDLISTVIEWSTYLE, $LVS_EX_FULLROWSELECT, $LVS_EX_FULLROWSELECT)
GUICtrlCreateListViewItem("Name 1|Category 1", $ListView)
GUICtrlCreateListViewItem("Name 2|Category 2", $ListView)
GUISetState()

;Register WM_NOTIFY  events
GUIRegisterMsg($WM_NOTIFY, "WM_Notify_Events")

While 1
   
   $msg = GUIGetMsg()
   
   Switch $msg
      
    ;-----------------------------------------------------------------------------------------
    ;This case statement exits and updates code if needed
      Case $GUI_EVENT_CLOSE
         Exit
         
         
       ;-----------------------------------------------------------------------------------------
       ;put all the misc. stuff here
        Case Else
            ;;;
   EndSwitch
WEnd

Func ListView_Click()
    ;----------------------------------------------------------------------------------------------
    If $DebugIt Then    _DebugPrint ("$NM_CLICK")
    ;----------------------------------------------------------------------------------------------
EndFunc   ;==>ListView_Click

Func ListView_DoubleClick()
    ;----------------------------------------------------------------------------------------------
    If $DebugIt Then    _DebugPrint ("$NM_DBLCLK")
    ;----------------------------------------------------------------------------------------------
    MsgBox(0,"Double Clicked", _GUICtrlListViewGetItemText ($ListView, _GUICtrlListViewGetSelectedIndices($ListView)))
EndFunc   ;==>ListView_DoubleClick

;
; WM_NOTIFY event handler
Func WM_Notify_Events($hWndGUI, $MsgID, $wParam, $lParam)
    #forceref $hWndGUI, $MsgID, $wParam
    Local $tagNMLISTVIEW , $event, $hwndFrom, $code
    $tagNMLISTVIEW = DllStructCreate("int;int;int;int;int;uint;uint;uint;int;int", $lParam) ;NMHDR (hwndFrom, idFrom, code), (iItem, iSubItem, uNewState, uOldState, uChanged, ptAction)
    If @error Then Return
    $event = DllStructGetData($tagNMLISTVIEW, 3)
    Switch $wParam
    Case $ListView
        Switch $event
            Case $NM_CLICK
                _DebugPrint("Item: " & DllStructGetData($tagNMLISTVIEW,4) & " SubItem: " & DllStructGetData($tagNMLISTVIEW,5))
                ListView_Click ()
            Case $NM_DBLCLK
                ListView_DoubleClick ()
            EndSwitch
    EndSwitch
    $tagNMHDR = 0
    $event = 0
    $lParam = 0
EndFunc   ;==>WM_Notify_Events

Func _DebugPrint($s_text)
    $s_text = StringReplace($s_text, @LF, @LF & "-->")
    ConsoleWrite("!===========================================================" & @LF & _
            "+===========================================================" & @LF & _
            "-->" & $s_text & @LF & _
            "+===========================================================" & @LF)
EndFunc   ;==>_DebugPrint

schliden · May 21, 2007

Thanks (ga)ry ?

Is it possible to pickup the mouseover event ?

TIA

birdofprey · May 21, 2007

Thanks (ga)ry ?

Is it possible to pickup the mouseover event ?

TIA

uncomment this:

;~ Global Const $NM_HOVER = ($NM_FIRST - 13)oÝ÷ Ù©Ýi×Z)ÞêÞ)¶¬jëh×6    Case $ListView
        Switch $event
            Case $NM_CLICK
                _DebugPrint("Item: " & DllStructGetData($tagNMLISTVIEW,4) & " SubItem: " & DllStructGetData($tagNMLISTVIEW,5))
                ListView_Click ()
            Case $NM_DBLCLK
                ListView_DoubleClick ()
            Case $NM_HOVER
                ListView_MouseOver ()

            EndSwitch

...and create this ListView_MouseOver () function so that something actually happens.

schliden · May 21, 2007

uncomment this:

;~ Global Const $NM_HOVER = ($NM_FIRST - 13)oÝ÷ Ù©Ýi×Z)ÞêÞ)¶¬jëh×6    Case $ListView
        Switch $event
            Case $NM_CLICK
                _DebugPrint("Item: " & DllStructGetData($tagNMLISTVIEW,4) & " SubItem: " & DllStructGetData($tagNMLISTVIEW,5))
                ListView_Click ()
            Case $NM_DBLCLK
                ListView_DoubleClick ()
            Case $NM_HOVER
                ListView_MouseOver ()

            EndSwitch

...and create this ListView_MouseOver () function so that something actually happens.

Thanks...

I found that I also needed to do this:

GUICtrlSendMsg($ListView1, $LVM_SETEXTENDEDLISTVIEWSTYLE, $LVS_EX_TRACKSELECT, $LVS_EX_TRACKSELECT)

Although the tooltip now works, it seems to prevent the $NM_DBLCLK from working.

schliden · May 21, 2007

Thanks...
I found that I also needed to do this:
GUICtrlSendMsg($ListView1, $LVM_SETEXTENDEDLISTVIEWSTYLE, $LVS_EX_TRACKSELECT, $LVS_EX_TRACKSELECT)
Although the tooltip now works, it seems to prevent the $NM_DBLCLK from working.

Ahhh, fixed the blocking with:

; set the time required before a hover event fires

_GUICtrlListViewSetHoverTime($ListView1,2000)

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Identifying specific ListView columns on double click / mouseover

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