Can an undone action be redone?
#include <GuiRichEdit.au3>
_GUICtrlRichEdit_CanRedo ( $hWnd )
$hWnd | Handle to the control |
Success: | True or False. |
Failure: | sets the @error flag to non-zero. |
@error: | 101 - $hWnd is not a handle |
_GUICtrlRichEdit_Redo, _GUICtrlRichEdit_SetUndoLimit
Search EM_CANREDO in MSDN Library.
#include <GUIConstantsEx.au3>
#include <GuiMenu.au3>
#include <GuiRichEdit.au3>
#include <WindowsConstants.au3>
Global $g_hRichEdit, $g_idMnu, $g_idMnuUndo, $g_idMnuRedo, $g_idMnuCut, $g_idMnuCopy
Global $g_idMnuPaste, $g_idMnuPasteSpl
Example()
Func Example()
Local $hGui, $idMnuPasteSplRTF, $idMnuPasteSplwObjs
$hGui = GUICreate("Example (" & StringTrimRight(@ScriptName, StringLen(".exe")) & ")", 320, 350, -1, -1)
$g_hRichEdit = _GUICtrlRichEdit_Create($hGui, "This is a test.", 10, 10, 300, 220, _
BitOR($ES_MULTILINE, $WS_VSCROLL, $ES_AUTOVSCROLL))
GUISetState(@SW_SHOW)
_GUICtrlRichEdit_AppendText($g_hRichEdit, ReadBmpToRtf(FindFirstBMP()))
GUIRegisterMsg($WM_NOTIFY, "WM_NOTIFY")
$g_idMnu = GUICtrlCreateContextMenu(GUICtrlCreateDummy())
$g_idMnuUndo = GUICtrlCreateMenuItem("Undo", $g_idMnu)
$g_idMnuRedo = GUICtrlCreateMenuItem("Redo", $g_idMnu)
GUICtrlCreateMenuItem("", $g_idMnu)
$g_idMnuCut = GUICtrlCreateMenuItem("Cut", $g_idMnu)
$g_idMnuCopy = GUICtrlCreateMenuItem("Copy", $g_idMnu)
$g_idMnuPaste = GUICtrlCreateMenuItem("Paste", $g_idMnu)
$g_idMnuPasteSpl = GUICtrlCreateMenu("Paste Special", $g_idMnu)
$idMnuPasteSplRTF = GUICtrlCreateMenuItem("RTF only", $g_idMnuPasteSpl)
$idMnuPasteSplwObjs = GUICtrlCreateMenuItem("With objects", $g_idMnuPasteSpl)
_GUICtrlRichEdit_SetEventMask($g_hRichEdit, $ENM_MOUSEEVENTS)
While True
Switch GUIGetMsg()
Case $GUI_EVENT_CLOSE
_GUICtrlRichEdit_Destroy($g_hRichEdit) ; needed unless script crashes
; GUIDelete() ; is OK too
Exit
Case $g_idMnuUndo
_GUICtrlRichEdit_Undo($g_hRichEdit)
Case $g_idMnuRedo
_GUICtrlRichEdit_Redo($g_hRichEdit)
Case $g_idMnuCut
_GUICtrlRichEdit_Cut($g_hRichEdit)
Case $g_idMnuCopy
_GUICtrlRichEdit_Copy($g_hRichEdit)
Case $g_idMnuPaste
_GUICtrlRichEdit_Paste($g_hRichEdit)
Case $idMnuPasteSplRTF
_GUICtrlRichEdit_PasteSpecial($g_hRichEdit, False)
Case $idMnuPasteSplwObjs
_GUICtrlRichEdit_PasteSpecial($g_hRichEdit, True)
EndSwitch
WEnd
EndFunc ;==>Example
Func WM_NOTIFY($hWnd, $iMsg, $wParam, $lParam)
#forceref $iMsg, $wParam
Local $hWndFrom, $iCode, $tNMHDR, $tMsgFilter, $hMenu
$tNMHDR = DllStructCreate($tagNMHDR, $lParam)
$hWndFrom = HWnd(DllStructGetData($tNMHDR, "hWndFrom"))
$iCode = DllStructGetData($tNMHDR, "Code")
Switch $hWndFrom
Case $g_hRichEdit
Select
Case $iCode = $EN_MSGFILTER
$tMsgFilter = DllStructCreate($tagMSGFILTER, $lParam)
If DllStructGetData($tMsgFilter, "msg") = $WM_RBUTTONUP Then
$hMenu = GUICtrlGetHandle($g_idMnu)
SetMenuTexts($hWndFrom, $hMenu)
_GUICtrlMenu_TrackPopupMenu($hMenu, $hWnd)
EndIf
EndSelect
EndSwitch
Return $GUI_RUNDEFMSG
EndFunc ;==>WM_NOTIFY
Func SetMenuTexts($hWnd, $hMenu)
Local $bState
If _GUICtrlRichEdit_CanUndo($hWnd) Then
_GUICtrlMenu_SetItemEnabled($hMenu, $g_idMnuUndo, True, False)
_GUICtrlMenu_SetItemText($hMenu, $g_idMnuUndo, "Undo: " & _GUICtrlRichEdit_GetNextUndo($hWnd), False)
Else
_GUICtrlMenu_SetItemText($hMenu, $g_idMnuUndo, "Undo", False)
_GUICtrlMenu_SetItemEnabled($hMenu, $g_idMnuUndo, False, False)
EndIf
If _GUICtrlRichEdit_CanRedo($hWnd) Then
_GUICtrlMenu_SetItemEnabled($hMenu, $g_idMnuRedo, True, False)
_GUICtrlMenu_SetItemText($hMenu, $g_idMnuRedo, "Redo: " & _GUICtrlRichEdit_GetNextRedo($hWnd), False)
Else
_GUICtrlMenu_SetItemText($hMenu, $g_idMnuRedo, "Redo", False)
_GUICtrlMenu_SetItemEnabled($hMenu, $g_idMnuRedo, False, False)
EndIf
$bState = _GUICtrlRichEdit_IsTextSelected($hWnd)
_GUICtrlMenu_SetItemEnabled($hMenu, $g_idMnuCut, $bState, False)
_GUICtrlMenu_SetItemEnabled($hMenu, $g_idMnuCopy, $bState, False)
_GUICtrlMenu_SetItemEnabled($hMenu, $g_idMnuPaste, _GUICtrlRichEdit_CanPaste($hWnd))
_GUICtrlMenu_SetItemEnabled($hMenu, $g_idMnuPasteSpl, _GUICtrlRichEdit_CanPasteSpecial($hWnd), False)
EndFunc ;==>SetMenuTexts
Func ReadBmpToRtf($sBmpFilspc)
Local $hFile, $sRtf
$hFile = FileOpen($sBmpFilspc, $FO_BINARY)
If FileRead($hFile, 2) <> "0x424D" Then Return SetError(1, 0, "")
FileRead($hFile, 12)
$sRtf = '{\rtf1{\pict\dibitmap ' & Hex(FileRead($hFile)) & '}}'
FileClose($hFile)
Return $sRtf
EndFunc ;==>ReadBmpToRtf
Func FindFirstBMP($sPath = Default)
If $sPath = Default Then
; X64 running support
Local $sWow64 = ""
If @AutoItX64 Then $sWow64 = "\Wow6432Node"
$sPath = RegRead("HKEY_LOCAL_MACHINE\SOFTWARE" & $sWow64 & "\AutoIt v3\AutoIt", "InstallDir") & "\Examples\GUI\Advanced\Images"
EndIf
Local $hFind, $sBmpFilspc
$hFind = FileFindFirstFile($sPath & "\*.bmp")
$sBmpFilspc = FileFindNextFile($hFind)
FileClose($hFind)
Return $sPath & "\" & $sBmpFilspc
EndFunc ;==>FindFirstBMP