[solved] Set HeaderColumn Color in ListView

[Melba23]

BBs19,

Alas, no.

M23

[VAN0]

On 10/29/2017 at 7:44 PM, BBs19 said:

Hi Melba, do you also know a way to color the background that is behind the headers? If I resize the headers, the background of the main ListView seems to be white

 

One trick is to add an empty column at the end and resize it dynamically:

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#include <GuiConstantsEx.au3>
#include <WindowsConstants.au3>
#include <FontConstants.au3>
#include <GuiListView.au3>

Global Const $tagNMCUSTOMDRAW = "struct;" & $tagNMHDR & ";dword dwDrawStage;handle hdc;" & $tagRECT & _
                                ";dword_ptr dwItemSpec;uint uItemState;lparam lItemlParam;endstruct"

;                        Title    TextCol   BkCol         - colours in BGR
Global $aHdrData[][] = [["Tom",   0x000000, 0x00FFFF], _
                        ["Dick",  0x00FFFF, 0x0000FF], _
                        ["Harry", 0xFF0000, 0xFFCCCC], _
                        ["", 0xFF0000, 0xFFCCCC] _ ;"fill" column
                        ]
Global $colCount = UBound($aHdrData)


$hGUI = GUICreate("Set Listview Header Colour ", 500, 300)
$cListView = GUICtrlCreateListView(_ArrayToString(_ArrayExtract($aHdrData, 0, $colCount-2, 0, 0)), 10, 10, 480, 280)
$hListView = GUICtrlGetHandle($cListView)
_GUICtrlListView_SetExtendedListViewStyle($cListView, $LVS_EX_FULLROWSELECT) ; BitOR($LVS_EX_DOUBLEBUFFER, $LVS_EX_GRIDLINES, $LVS_EX_FULLROWSELECT))

;Get header handle
Global $hHeader = _GUICtrlListView_GetHeader($cListView)

; Get the font of the Header control (credit KaFu)
Local $hDC = _WinAPI_GetDC($hHeader)
Local $hFont = _SendMessage($hHeader, $WM_GETFONT)
Local $hObject = _WinAPI_SelectObject($hDC, $hFont)
Local $tLogFont = DllStructCreate($tagLOGFONT)

_WinAPI_GetObject($hFont, DllStructGetSize($tLogFont), DllStructGetPtr($tLogFont))
_WinAPI_SelectObject($hDC, $hObject)
_WinAPI_ReleaseDC($hHeader, $hDC)

Local $iWeight = DllStructGetData( $tLogFont, "Weight" )               ; Bold
DllStructSetData( $tLogFont, "Weight", BitOR( $iWeight, $FW_BOLD ) )
$hHdrFont = _WinAPI_CreateFontIndirect( $tLogFont )

For $i = 1 To 15
    _GUICtrlListView_AddItem($cListView, "Item" & $i)
    _GUICtrlListView_AddSubItem($cListView, $i - 1, "SubItem" & $i, 1)
    _GUICtrlListView_AddSubItem($cListView, $i - 1, "SubItem" & $i, 2)
Next

For $i = 0 To  $colCount - 2
    _GUICtrlListView_SetColumnWidth($cListView, $i, $LVSCW_AUTOSIZE_USEHEADER)
Next

_GUICtrlListView_AddColumn($cListView, "") ;this will prevent last visible column from filling up the remaining width
_GUICtrlListView_SetColumnWidth($cListView, $colCount - 1, 0)

GUIRegisterMsg($WM_NOTIFY, "_WM_NOTIFY")

GUISetState()

Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE

Func _WM_NOTIFY($hWnd, $iMsg, $wParam, $lParam)

    #forceref $hWnd, $iMsg, $wParam
    ; Struct = $tagNMHDR and "int Item;int SubItem" from $tagNMLISTVIEW
    Local $tStruct = DllStructCreate("hwnd;uint_ptr;int_ptr;int;int", $lParam)
    If @error Then Return

    Local $tNMHEADER = DllStructCreate($tagNMHEADER, $lParam)
    If HWnd( DllStructGetData($tNMHEADER, "hWndFrom")) = $hHeader Then
        Local $iCode = BitAND(DllStructGetData($tStruct, 3), 0xFFFFFFFF)
        Switch $iCode

            Case $HDN_BEGINTRACKW
                Local $iCol = DllStructGetData($tNMHEADER, "Item")
                If $iCol = $colCount - 1 Then
                    ; Prevent resizing of last (empty) column
                    Return True
                Else
                    ; Allow resizing
                    Return False
                EndIf

            Case $HDN_TRACKW, $HDN_ENDTRACKW
                Local $pos = ControlGetPos($hGUI, "", $cListView)
                Local Static $scrollbarWidth = _WinAPI_GetSystemMetrics($SM_CXVSCROLL)
                Local $rectFirst = _GUICtrlListView_GetItemRect($hListView, 0)
                Local $rectLast = _GUICtrlListView_GetSubItemRect($hListView, _GUICtrlListView_GetItemCount($cListView) - 1, $colCount - 2, 0) ;rect of last subitem of last item 
                Local $sw = ($rectFirst[1] < 0 Or $rectLast[3] > $pos[3]) ? $scrollbarWidth : 0 ;scrollbar shown?
                Local $w = $pos[2] - $rectLast[2] - $sw - 4 ;not sure what the 4 is for
                GUICtrlSendMsg( $cListView, $LVM_SETCOLUMNWIDTH, $colCount-1, $w > 0 ? $w : 0);resize last (empty) column

            Case $NM_CUSTOMDRAW

                Local $tNMCustomDraw = DllStructCreate($tagNMCUSTOMDRAW, $lParam)
                Local $dwDrawStage = DllStructGetData($tNMCustomDraw, "dwDrawStage")
                Switch $dwDrawStage ; Holds a value that specifies the drawing stage
                    Case $CDDS_PREPAINT ; Before the paint cycle begins
                        Return $CDRF_NOTIFYITEMDRAW ; Notify parent window of any item related drawing operations

                    Case $CDDS_ITEMPREPAINT ; Before an item is drawn: Default painting (frames and background)
                        Return $CDRF_NOTIFYPOSTPAINT ; Notify parent window of any post item related drawing operations

                    Case $CDDS_ITEMPOSTPAINT ; After an item is drawn: Custom painting (item texts)
                        Local $tRECT = DllStructCreate($tagRECT)
                        Local $iIndex = DllStructGetData($tNMCustomDraw, "dwItemSpec") ; Item index
                        Local $hDC = DllStructGetData($tNMCustomDraw, "hdc") ; Device context
                        _WinAPI_SelectObject($hDC, $hHdrFont) ; Set text font
                        _WinAPI_SetBkMode($hDC, $TRANSPARENT) ; Transparent background
                        _WinAPI_SetTextColor( $hDC, $aHdrData[$iIndex][1]) ; Set text colour
                        ; Get header section size
                        DllStructSetData($tRECT, 1, DllStructGetData($tNMCustomDraw, 6) + 1)
                        DllStructSetData($tRECT, 2, DllStructGetData($tNMCustomDraw, 7) + 1)
                        DllStructSetData($tRECT, 3, DllStructGetData($tNMCustomDraw, 8) - ($iIndex = $colCount - 1 ? 0 : 2))
                        DllStructSetData($tRECT, 4, DllStructGetData($tNMCustomDraw, 9) - 2)
                        ; Set and draw back colour
                        Local $hBrush = _WinAPI_CreateSolidBrush($aHdrData[$iIndex][2])
                        _WinAPI_FillRect($hDC, $tRECT, $hBrush)
                        ; Write text
                        If $iIndex < _GUICtrlListView_GetColumnCount($cListView) Then
                            _WinAPI_DrawText ( $hDC, $aHdrData[$iIndex][0], $tRECT, $DT_CENTER + $DT_VCENTER )
                        EndIf
                        Return $CDRF_NEWFONT ; $CDRF_NEWFONT must be returned after changing font or colors
                EndSwitch

        EndSwitch
    EndIf

EndFunc   ;==>_WM_NOTIFY

Or disallow resizing last column to the size smaller than the width of the list

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#include <GuiConstantsEx.au3>
#include <WindowsConstants.au3>
#include <FontConstants.au3>
#include <GuiListView.au3>

Global Const $tagNMCUSTOMDRAW = "struct;" & $tagNMHDR & ";dword dwDrawStage;handle hdc;" & $tagRECT & _
                                ";dword_ptr dwItemSpec;uint uItemState;lparam lItemlParam;endstruct"

;                        Title    TextCol   BkCol         - colours in BGR
Global $aHdrData[][] = [["Tom",   0x000000, 0x00FFFF], _
                        ["Dick",  0x00FFFF, 0x0000FF], _
                        ["Harry", 0xFF0000, 0xFFCCCC] _
                        ]
Global $colCount = UBound($aHdrData)


$hGUI = GUICreate("Set Listview Header Colour ", 500, 300)
$cListView = GUICtrlCreateListView(_ArrayToString(_ArrayExtract($aHdrData, 0, $colCount-1, 0, 0)), 10, 10, 480, 280)
$hListView = GUICtrlGetHandle($cListView)
_GUICtrlListView_SetExtendedListViewStyle($cListView, $LVS_EX_FULLROWSELECT) ; BitOR($LVS_EX_DOUBLEBUFFER, $LVS_EX_GRIDLINES, $LVS_EX_FULLROWSELECT))

;Get header handle
Global $hHeader = _GUICtrlListView_GetHeader($cListView)

; Get the font of the Header control (credit KaFu)
Local $hDC = _WinAPI_GetDC($hHeader)
Local $hFont = _SendMessage($hHeader, $WM_GETFONT)
Local $hObject = _WinAPI_SelectObject($hDC, $hFont)
Local $tLogFont = DllStructCreate($tagLOGFONT)

_WinAPI_GetObject($hFont, DllStructGetSize($tLogFont), DllStructGetPtr($tLogFont))
_WinAPI_SelectObject($hDC, $hObject)
_WinAPI_ReleaseDC($hHeader, $hDC)

Local $iWeight = DllStructGetData( $tLogFont, "Weight" )               ; Bold
DllStructSetData( $tLogFont, "Weight", BitOR( $iWeight, $FW_BOLD ) )
$hHdrFont = _WinAPI_CreateFontIndirect( $tLogFont )

For $i = 1 To 15
    _GUICtrlListView_AddItem($cListView, "Item" & $i)
    _GUICtrlListView_AddSubItem($cListView, $i - 1, "SubItem" & $i, 1)
    _GUICtrlListView_AddSubItem($cListView, $i - 1, "SubItem" & $i, 2)
Next

For $i = 0 To  $colCount - 1
    _GUICtrlListView_SetColumnWidth($cListView, $i, $LVSCW_AUTOSIZE_USEHEADER)
Next

GUIRegisterMsg($WM_NOTIFY, "_WM_NOTIFY")

GUISetState()

Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE

Func _WM_NOTIFY($hWnd, $iMsg, $wParam, $lParam)

    #forceref $hWnd, $iMsg, $wParam
    ; Struct = $tagNMHDR and "int Item;int SubItem" from $tagNMLISTVIEW
    Local $tStruct = DllStructCreate("hwnd;uint_ptr;int_ptr;int;int", $lParam)
    If @error Then Return

    Local $tNMHEADER = DllStructCreate($tagNMHEADER, $lParam)
    If HWnd( DllStructGetData($tNMHEADER, "hWndFrom")) = $hHeader Then
        Local $iCode = BitAND(DllStructGetData($tStruct, 3), 0xFFFFFFFF)
        Local Static $lastRect = 0
        Switch $iCode

            Case $HDN_TRACKW, $HDN_ENDTRACKW
                Local $pos = ControlGetPos($hGUI, "", $cListView)
                Local $rectLast = _GUICtrlListView_GetSubItemRect($hListView, _GUICtrlListView_GetItemCount($cListView) - 1, $colCount - 1, 0)
                If $pos[2] > $rectLast[2] Then
                    Local Static $scrollbarWidth = _WinAPI_GetSystemMetrics($SM_CXVSCROLL)
                    Local $rectFirst = _GUICtrlListView_GetItemRect($hListView, 0)
                    Local $sw = ($rectFirst[1] < 0 Or $rectLast[3] > $pos[3]) ? $scrollbarWidth : 0
                    GUICtrlSendMsg( $cListView, $LVM_SETCOLUMNWIDTH, $colCount-1, $pos[2] - $rectLast[0] - $sw - 4);resize last column
                    Return True
                EndIf
            Case $NM_CUSTOMDRAW

                Local $tNMCustomDraw = DllStructCreate($tagNMCUSTOMDRAW, $lParam)
                Local $dwDrawStage = DllStructGetData($tNMCustomDraw, "dwDrawStage")
                Switch $dwDrawStage ; Holds a value that specifies the drawing stage
                    Case $CDDS_PREPAINT ; Before the paint cycle begins
                        Return $CDRF_NOTIFYITEMDRAW ; Notify parent window of any item related drawing operations

                    Case $CDDS_ITEMPREPAINT ; Before an item is drawn: Default painting (frames and background)
                        Return $CDRF_NOTIFYPOSTPAINT ; Notify parent window of any post item related drawing operations

                    Case $CDDS_ITEMPOSTPAINT ; After an item is drawn: Custom painting (item texts)
                        Local $tRECT = DllStructCreate($tagRECT)
                        Local $iIndex = DllStructGetData($tNMCustomDraw, "dwItemSpec") ; Item index
                        Local $hDC = DllStructGetData($tNMCustomDraw, "hdc") ; Device context
                        _WinAPI_SelectObject($hDC, $hHdrFont) ; Set text font
                        _WinAPI_SetBkMode($hDC, $TRANSPARENT) ; Transparent background
                        _WinAPI_SetTextColor( $hDC, $aHdrData[$iIndex][1]) ; Set text colour
                        ; Get header section size
                        DllStructSetData($tRECT, 1, DllStructGetData($tNMCustomDraw, 6) + 1)
                        DllStructSetData($tRECT, 2, DllStructGetData($tNMCustomDraw, 7) + 1)
                        DllStructSetData($tRECT, 3, DllStructGetData($tNMCustomDraw, 8) - 2)
                        DllStructSetData($tRECT, 4, DllStructGetData($tNMCustomDraw, 9) - 2)
                        ; Set and draw back colour
                        Local $hBrush = _WinAPI_CreateSolidBrush($aHdrData[$iIndex][2])
                        _WinAPI_FillRect($hDC, $tRECT, $hBrush)
                        ; Write text
                        If $iIndex < _GUICtrlListView_GetColumnCount($cListView) Then
                            _WinAPI_DrawText ( $hDC, $aHdrData[$iIndex][0], $tRECT, $DT_CENTER + $DT_VCENTER )
                        EndIf
                        Return $CDRF_NEWFONT ; $CDRF_NEWFONT must be returned after changing font or colors
                EndSwitch

        EndSwitch
    EndIf

EndFunc   ;==>_WM_NOTIFY

 

One thing I can't figure out is why $HDN_TRACKW event is not firing while column divider is being dragged?

Also there must be a better way detect when vertical scrollbar is shown, I'm using first item and last item coordinates to detect if they are outside of listview or not.

Edited June 13, 2020 by VAN0