Treeview m. Checkbox - Un/Check durch Leertaste verhindern

**BugFix**

In einem Treeview lassen sich die Checkboxen mit Mausklick oder durch Drücken der Leertaste un/checken. Ich möchte nun die Leertasten-Funktion verhindern.
Mein Gedanke war:
- TVN_KEYDOWN abfragen
- Prüfen ob Leertaste das Event ausgelöst hat - wenn ja: "Return 1" um Normalverhalten zu unterbinden.

Aber leider reagiert die Checkbox trotzdem. Also ist das Event TVN_KEYDOWN wohl ungeeignet, da die Markierung der Checkbox scheinbar stattfindet ehe dieses Event ausgelöst wird.
Nun habe ich im Moment keine Idee, wie ich die Leertaste verhindern kann...

AutoIt

#include <TreeViewConstants.au3>
#include <StructureConstants.au3>
#include <WindowsConstants.au3>
#include <GUIConstantsEx.au3>


Global $hTreeview


_Test()


Func _Test()
	GUICreate('Test', 210, 210)
	Local $iStyle = BitOR($TVS_EDITLABELS, $TVS_HASBUTTONS, $TVS_HASLINES, $TVS_LINESATROOT, $TVS_DISABLEDRAGDROP, $TVS_SHOWSELALWAYS, $TVS_CHECKBOXES)
	Local $idTreeview = GUICtrlCreateTreeView(15, 15, 180, 180, $iStyle, $WS_EX_CLIENTEDGE)
	$hTreeview = GUICtrlGetHandle(-1)
	For $i = 0 To 9
		GUICtrlCreateTreeViewItem('Item ' & $i, $idTreeview)
	Next
	GuiRegisterMsg($WM_NOTIFY, '_WM_NOTIFY')
	GUISetState()
	Do
	Until GUIGetMsg() = -3
EndFunc


Func _WM_NOTIFY($hWnd, $iMsg, $wParam, $lParam)
    #forceref $hWnd, $iMsg, $wParam
    Local $hWndFrom, $tNMHDR, $iCode
    $tNMHDR = DllStructCreate($tagNMHDR, $lParam)
    $hWndFrom = HWnd(DllStructGetData($tNMHDR, "hWndFrom"))
    $iCode = DllStructGetData($tNMHDR, "Code")


    Switch $hWndFrom
        Case $hTreeview
            Switch $iCode
				Case $TVN_KEYDOWN
					Local $tagTVKEYDOWN = $tagNMHDR & ';WORD  wVKey;UINT  flags'
					Local $tTVKEYDOWN = DllStructCreate($tagTVKEYDOWN, $lParam)
					Local $vKey = DllStructGetData($tTVKEYDOWN, 'wVKey')
						ConsoleWrite("@@ Debug line" & @TAB & @ScriptLineNumber & "   var: $vKey --> " & $vKey & @LF)
					If $vKey = 32 Then Return 1 ; Leertaste >> kein Normalverhalten gewünscht (Checkbox soll nicht reagieren)
				Case $TVN_SELCHANGEDA, $TVN_SELCHANGEDW
					Local $tNMTREEVIEW = DllStructCreate($tagNMTREEVIEW, $lParam)
					Switch DllStructGetData($tNMTREEVIEW, 'Action')
						Case $TVC_BYKEYBOARD
							ConsoleWrite('TVC_BYKEYBOARD' & @CRLF)
						Case $TVC_BYMOUSE
							ConsoleWrite('TVC_BYMOUSE' & @CRLF)
						Case $TVC_UNKNOWN
							ConsoleWrite('TVC_UNKNOWN' & @CRLF)
					EndSwitch
            EndSwitch
    EndSwitch
    Return $GUI_RUNDEFMSG
EndFunc

Alles anzeigen

**Bitnugger**

So in etwa...

AutoIt

;-- TIME_STAMP   2016-05-01 19:58:54


#Region ;************ Includes ************
;~ #include <Constants.au3>;~~~
;~ #include <GUIConstants.au3>;~~~
#include <WindowsConstants.au3>
#include <WinAPI.au3>
#include <TreeViewConstants.au3>
;~ #include <StructureConstants.au3>;~~~
#include <WindowsConstants.au3>
#include <GUIConstantsEx.au3>
#EndRegion ;************ Includes ************


$hCallback = DllCallbackRegister("_KeyProc", "long", "int;wparam;lparam")
$hHook = _WinAPI_SetWindowsHookEx($WH_KEYBOARD_LL, DllCallbackGetPtr($hCallback), _WinAPI_GetModuleHandle(0))


GUISetOnEvent($GUI_EVENT_CLOSE, "Event_Close")


Global $hGUI, $hTreeview, $idTreeview


_Test()


Func _Test()
	$hGUI = GUICreate('Test', 210, 210)
	Local $iStyle = BitOR($TVS_EDITLABELS, $TVS_HASBUTTONS, $TVS_HASLINES, $TVS_LINESATROOT, $TVS_DISABLEDRAGDROP, $TVS_SHOWSELALWAYS, $TVS_CHECKBOXES)
	$idTreeview = GUICtrlCreateTreeView(15, 15, 180, 180, $iStyle, $WS_EX_CLIENTEDGE)
	$hTreeview = GUICtrlGetHandle(-1)
	For $i = 0 To 9
		GUICtrlCreateTreeViewItem('Item ' & $i, $idTreeview)
	Next
	GUISetState()
	Do
	Until GUIGetMsg() = -3
EndFunc   ;==>_Test


Func _KeyProc($nCode, $wParam, $lParam) ;subclassing
	If $nCode < 0 Then Return _WinAPI_CallNextHookEx($hHook, $nCode, $wParam, $lParam)
	Local $tKEYHOOKS = DllStructCreate($tagKBDLLHOOKSTRUCT, $lParam)
	Local $iSpace = 0
	Switch $wParam
		Case $WM_KEYUP
			If DllStructGetData($tKEYHOOKS, "vkCode") = 0x20 Then
				ConsoleWrite("Space wurde losgelassen." & @CRLF)
				$iSpace = 1
			EndIf
		Case $WM_KEYDOWN
			If DllStructGetData($tKEYHOOKS, "vkCode") = 0x20 Then
				ConsoleWrite("Space wurde gedrückt." & @CRLF)
				$iSpace = 1
			EndIf
	EndSwitch
	If $iSpace = 1 Then
		$sClassNameFocus = ControlGetFocus($hGUI)
		$sClassName = _WinAPI_GetClassName($hTreeview)
		If StringInStr($sClassNameFocus, $sClassName) = 0 Then
			Return _WinAPI_CallNextHookEx($hHook, $nCode, $wParam, $lParam)
		Else
			ConsoleWrite('Space wird ignoriert...' & @CRLF)
			Return 1
		EndIf
	EndIf
EndFunc   ;==>_KeyProc


Func Event_Close()
	_WinAPI_UnhookWindowsHookEx($hHook)
	DllCallbackFree($hCallback)
	GUIDelete()
	Exit
EndFunc   ;==>Event_Close

Alles anzeigen

**BugFix**

Danke, aber hooken wollte ich hierbei eigentlich nicht. Wäre nur die allerletzte Wahl.
Meines Erachtens muß es doch eine Notifikation geben, wenn die Checkbox per Leertaste un/checked wird. Leider habe ich in keiner der Strukturen und Messages bisher etwas passendes gefunden.

Ich hoffe mal, jemand hat noch eine Idee.

**Bitnugger**

Und wie gefällt dir diese Lösung?

AutoIt

;-- TIME_STAMP   2016-05-01 23:08:27   v 0.1


#include <TreeViewConstants.au3>
#include <StructureConstants.au3>
#include <WindowsConstants.au3>
#include <GUIConstantsEx.au3>


Global $hGUI, $hTreeview, $idTreeview


_Test()


Func _Test()
	$hGUI = GUICreate('Test', 210, 210)
	Local $iStyle = BitOR($TVS_EDITLABELS, $TVS_HASBUTTONS, $TVS_HASLINES, $TVS_LINESATROOT, $TVS_DISABLEDRAGDROP, $TVS_SHOWSELALWAYS, $TVS_CHECKBOXES)
	$idTreeview = GUICtrlCreateTreeView(15, 15, 180, 180, $iStyle, $WS_EX_CLIENTEDGE)
	$hTreeview = GUICtrlGetHandle(-1)
	For $i = 0 To 9
		GUICtrlCreateTreeViewItem('Item ' & $i, $idTreeview)
	Next
	GuiRegisterMsg($WM_NOTIFY, '_WM_NOTIFY')
	GUISetState()
	Do
	Until GUIGetMsg() = -3
EndFunc


Func _WM_NOTIFY($hWnd, $iMsg, $wParam, $lParam)
    #forceref $hWnd, $iMsg, $wParam
    Local $hWndFrom, $tNMHDR, $iCode
	Local Static $iSend = 0
    $tNMHDR = DllStructCreate($tagNMHDR, $lParam)
    $hWndFrom = HWnd(DllStructGetData($tNMHDR, "hWndFrom"))
    $iCode = DllStructGetData($tNMHDR, "Code")


    Switch $hWndFrom
		Case $hTreeview
				Switch $iCode
					Case $TVN_KEYDOWN
						Local $tagTVKEYDOWN = $tagNMHDR & ';WORD  wVKey;UINT  flags'
						Local $tTVKEYDOWN = DllStructCreate($tagTVKEYDOWN, $lParam)
						Local $vKey = DllStructGetData($tTVKEYDOWN, 'wVKey')
						If $vKey = 32 Then
							ConsoleWrite("@@ Debug line" & @TAB & @ScriptLineNumber & "   var: $vKey --> " & $vKey & @LF)
							If $iSend = 1 Then
								$iSend = 0
								Return 1 ; Leertaste >> kein Normalverhalten gewünscht (Checkbox soll nicht reagieren)
							Else
								$iSend = 1
								ControlSend($hGUI, '', $idTreeview, '{SPACE}')
								Return 1 ; Leertaste >> kein Normalverhalten gewünscht (Checkbox soll nicht reagieren)
							EndIf
						EndIf
					Case $TVN_SELCHANGEDA, $TVN_SELCHANGEDW
						Local $tNMTREEVIEW = DllStructCreate($tagNMTREEVIEW, $lParam)
						Switch DllStructGetData($tNMTREEVIEW, 'Action')
							Case $TVC_BYKEYBOARD
								ConsoleWrite('TVC_BYKEYBOARD' & @CRLF)
							Case $TVC_BYMOUSE
								ConsoleWrite('TVC_BYMOUSE' & @CRLF)
							Case $TVC_UNKNOWN
								ConsoleWrite('TVC_UNKNOWN' & @CRLF)
						EndSwitch
				EndSwitch
    EndSwitch
    Return $GUI_RUNDEFMSG
EndFunc

Alles anzeigen

**Bitnugger**

Und hier noch eine andere Version...

AutoIt

;-- TIME_STAMP   2016-05-02 03:34:49   v 0.1


#include <TreeViewConstants.au3>
#include <StructureConstants.au3>
#include <WindowsConstants.au3>
#include <GUIConstantsEx.au3>
#include <GuiTreeView.au3>


Global $hGUI, $hTreeview, $idTreeview


_Test()


Func _Test()
	$hGUI = GUICreate('Test', 210, 210)
	Local $iStyle = BitOR($TVS_EDITLABELS, $TVS_HASBUTTONS, $TVS_HASLINES, $TVS_LINESATROOT, $TVS_DISABLEDRAGDROP, $TVS_SHOWSELALWAYS, $TVS_CHECKBOXES)
	$idTreeview = GUICtrlCreateTreeView(15, 15, 180, 180, $iStyle, $WS_EX_CLIENTEDGE)
	$hTreeview = GUICtrlGetHandle(-1)
	For $i = 0 To 9
		GUICtrlCreateTreeViewItem('Item ' & $i, $idTreeview)
	Next
	GuiRegisterMsg($WM_NOTIFY, '_WM_NOTIFY')
	GUISetState()
	Do
	Until GUIGetMsg() = -3
EndFunc


Func _WM_NOTIFY($hWnd, $iMsg, $wParam, $lParam)
    #forceref $hWnd, $iMsg, $wParam
    Local $hWndFrom, $tNMHDR, $iCode
    $tNMHDR = DllStructCreate($tagNMHDR, $lParam)
    $hWndFrom = HWnd(DllStructGetData($tNMHDR, "hWndFrom"))
    $iCode = DllStructGetData($tNMHDR, "Code")


    Switch $hWndFrom
		Case $hTreeview
				Switch $iCode
					Case $TVN_KEYDOWN
						Local $tagTVKEYDOWN = $tagNMHDR & ';WORD  wVKey;UINT  flags'
						Local $tTVKEYDOWN = DllStructCreate($tagTVKEYDOWN, $lParam)
						Local $vKey = DllStructGetData($tTVKEYDOWN, 'wVKey')
						If $vKey = 32 Then
							ConsoleWrite("@@ Debug line" & @TAB & @ScriptLineNumber & "   var: $vKey --> " & $vKey & @LF)
							If _GUICtrlTreeView_GetChecked($hTreeview, _GUICtrlTreeView_GetSelection($hTreeview)) Then
								_GUICtrlTreeView_SetChecked($hTreeview, _GUICtrlTreeView_GetSelection($hTreeview), False)
							Else
								_GUICtrlTreeView_SetChecked($hTreeview, _GUICtrlTreeView_GetSelection($hTreeview), True)
							EndIf
							;Return 1 ; Leertaste >> kein Normalverhalten gewünscht (Checkbox soll nicht reagieren)
						EndIf
					Case $TVN_SELCHANGEDA, $TVN_SELCHANGEDW
						Local $tNMTREEVIEW = DllStructCreate($tagNMTREEVIEW, $lParam)
						Switch DllStructGetData($tNMTREEVIEW, 'Action')
							Case $TVC_BYKEYBOARD
								ConsoleWrite('TVC_BYKEYBOARD' & @CRLF)
							Case $TVC_BYMOUSE
								ConsoleWrite('TVC_BYMOUSE' & @CRLF)
							Case $TVC_UNKNOWN
								ConsoleWrite('TVC_UNKNOWN' & @CRLF)
						EndSwitch
				EndSwitch
    EndSwitch
    Return $GUI_RUNDEFMSG
EndFunc

Alles anzeigen

**UEZ**

Probiere es mal mit

AutoIt

If $vKey = 32 Then _GUICtrlTreeView_SetChecked($hTreeview, _GUICtrlTreeView_GetSelection($hTreeview), Not _GUICtrlTreeView_GetChecked($hTreeview, _GUICtrlTreeView_GetSelection($hTreeview))) ; Leertaste >> kein Normalverhalten gewünscht (Checkbox soll nicht reagieren)