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AustrianOak

Listview auto re-size

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I searched through the helpfile in listview styles and extended styles and could not find the feeature that would auto fit a listview items width to the text in it. maybe i overlooked something?

is there a function that does this?

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s there a function that does this?

I made a UDF for it:

#include <GuiConstantsEx.au3>
#include <ListViewConstants.au3>
#include <WindowsConstants.au3>
;

$Main_GUI = GUICreate("ListView Set Equel Column Width Demo", 340, 260, -1, -1, $WS_OVERLAPPEDWINDOW)

$ListView = GUICtrlCreateListView("col1|col2|col3", 20, 30, 300, 150, _
    $LVS_SHOWSELALWAYS+$LVS_NOSORTHEADER, $LVS_EX_FULLROWSELECT+$LVS_EX_GRIDLINES)

GUICtrlCreateListViewItem("line1|data1|more1", $ListView)
GUICtrlCreateListViewItem("line2|data2|more2", $ListView)
GUICtrlCreateListViewItem("line3|data3|more3", $ListView)
GUICtrlCreateListViewItem("line4|data4|more4", $ListView)
GUICtrlCreateListViewItem("line5|data5|more5", $ListView)

$Set_Equel_Button = GUICtrlCreateButton("Set Equel Width", 20, 190, 100, 20)
$Set_Full_Button = GUICtrlCreateButton("Set Full Width", 20, 220, 100, 20)

GUISetState()

GUIRegisterMsg($WM_SIZE, "WM_SIZE")

While 1
    $iMsg = GUIGetMsg()
    Switch $iMsg
        Case $GUI_EVENT_CLOSE
            Exit
        Case $Set_Full_Button, $GUI_EVENT_MAXIMIZE, $GUI_EVENT_RESTORE
            _GUICtrlListView_SetEquelColWidth($Main_GUI, $ListView, 1)
        Case $Set_Equel_Button
            _GUICtrlListView_SetEquelColWidth($Main_GUI, $ListView, 0)
    EndSwitch
WEnd

Func _GUICtrlListView_SetEquelColWidth($hWnd, $hLV, $iFullMode=1)
    If Not IsHWnd($hLV) Then $hLV = ControlGetHandle($hWnd, "", $hLV)
    If @error Then Return SetError(1, 0, -1)
    
    Local $hUser32DllOpen = DllOpen("user32.dll")
    If $hUser32DllOpen = -1 Then Return SetError(2, 0, -1)
    
    Local $LV_Header = DllCall($hUser32DllOpen, "long", "SendMessage", "hwnd", $hLV, "int", $LVM_GETHEADER, "int", 0, "int", 0)
    If @error Then Return SetError(3, 0, -1)
    
    ;Local Const $HDM_GETITEMCOUNT = 0x1200
    Local $sItmsCnt = DllCall($hUser32DllOpen, "long", "SendMessage", "hwnd", $LV_Header[0], "int", 0x1200, "int", 0, "int", 0)
    If @error Then Return SetError(4, 0, -1)
    
    Local $Columns_Count = $sItmsCnt[0]
    Local $iLV_Width = 0
    
    Switch $iFullMode
        Case 0
            Local $Columns_Width = 0
            Local $GetColumns_Width
            
            For $i = 0 To $Columns_Count
                $GetColumns_Width = DllCall($hUser32DllOpen, "long", "SendMessage", _
                    "hwnd", $hLV, "int", $LVM_GETCOLUMNWIDTH, "int", $i, "int", 0)
                $Columns_Width += $GetColumns_Width[0]
            Next
            
            $iLV_Width = $Columns_Width / $Columns_Count
        Case 1
            Local $sLV_Width = ControlGetPos($hWnd, "", $hLV)
            If @error Then Return SetError(5, 0, 0)
            
            $iLV_Width = ($sLV_Width[2]-10) / $Columns_Count
        Case Else
            Return SetError(6, 0, -1)
    EndSwitch
    
    For $i = 0 To $Columns_Count
        DllCall($hUser32DllOpen, "long", "SendMessage", "hwnd", $hLV, "int", $LVM_SETCOLUMNWIDTH, "int", $i, "int", $iLV_Width)
    Next
    
    DllClose($hUser32DllOpen)
EndFunc

Func WM_SIZE($hWndGUI, $MsgID, $WParam, $LParam)
    _GUICtrlListView_SetEquelColWidth($hWndGUI, $ListView, 1)
EndFuncoÝ÷ Ù:,)yÈÇ(é§Â'm붬jëh×6GUICtrlSendMsg($ListView, $LVM_SETCOLUMNWIDTH, 2, -1) ;2 is the zero-based column number

 

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