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Hello, When running the below code and you maximize the GUI, the resize of the Rebar doesn't work properly. When you "disable" the line "GUIRegisterMsg($WM_NOTIFY, "WM_NOTIFY")" the resize of the Rebar works fine. Does anybody know why this happens ? Thanks, Rodger #include <GuiComboBox.au3> #include <GUIConstantsEx.au3> #include <GuiDateTimePicker.au3> #include <GuiEdit.au3> #include <GuiReBar.au3> #include <GuiToolbar.au3> #include <WindowsConstants.au3> Global $g_hReBar Example() Func Example() Local $hGui, $idBtnExit, $hToolbar, $hCombo, $hDTP, $hInput Local Enum $e_idNew = 1000, $e_idOpen, $e_idSave, $idHelp $hGui = GUICreate("Rebar", 400, 396, -1, -1, BitOR($WS_MINIMIZEBOX, $WS_CAPTION, $WS_POPUP, $WS_SYSMENU, $WS_MAXIMIZEBOX)) GUIRegisterMsg($WM_NOTIFY, "WM_NOTIFY") GUIRegisterMsg($WM_SIZE, "WM_SIZE") ; create the rebar control $g_hReBar = _GUICtrlRebar_Create($hGui, BitOR($CCS_TOP, $WS_BORDER, $RBS_VARHEIGHT, $RBS_AUTOSIZE, $RBS_BANDBORDERS)) ; create a toolbar to put in the rebar $hToolbar = _GUICtrlToolbar_Create($hGui, BitOR($TBSTYLE_FLAT, $CCS_NORESIZE, $CCS_NOPARENTALIGN)) ; Add standard system bitmaps Switch _GUICtrlToolbar_GetBitmapFlags($hToolbar) Case 0 _GUICtrlToolbar_AddBitmap($hToolbar, 1, -1, $IDB_STD_SMALL_COLOR) Case 2 _GUICtrlToolbar_AddBitmap($hToolbar, 1, -1, $IDB_STD_LARGE_COLOR) EndSwitch ; Add buttons _GUICtrlToolbar_AddButton($hToolbar, $e_idNew, $STD_FILENEW) _GUICtrlToolbar_AddButton($hToolbar, $e_idOpen, $STD_FILEOPEN) _GUICtrlToolbar_AddButton($hToolbar, $e_idSave, $STD_FILESAVE) _GUICtrlToolbar_AddButtonSep($hToolbar) _GUICtrlToolbar_AddButton($hToolbar, $idHelp, $STD_HELP) ; create a combobox to put in the rebar $hCombo = _GUICtrlComboBox_Create($hGui, "", 0, 0, 120) _GUICtrlComboBox_BeginUpdate($hCombo) _GUICtrlComboBox_AddDir($hCombo, @WindowsDir & "\*.exe") _GUICtrlComboBox_EndUpdate($hCombo) ; create a date time picker to put in the rebar $hDTP = _GUICtrlDTP_Create($hGui, 0, 0, 190) ; create a input box to put in the rebar ; $hInput = GUICtrlCreateInput("Input control", 0, 0, 120, 20) $hInput = _GUICtrlEdit_Create($hGui, "Input control", 0, 0, 120, 20) ; default for add is append ; add band with control _GUICtrlRebar_AddBand($g_hReBar, $hCombo, 120, 200, "Dir *.exe") ; add band with date time picker _GUICtrlRebar_AddBand($g_hReBar, $hDTP, 120) ; add band with toolbar to beginning of rebar _GUICtrlRebar_AddToolBarBand($g_hReBar, $hToolbar, "", 0) ;add another control ; _GUICtrlRebar_AddBand($g_hReBar, GUICtrlGetHandle($hInput), 120, 200, "Name:") _GUICtrlRebar_AddBand($g_hReBar, $hInput, 120, 200, "Name:") $idBtnExit = GUICtrlCreateButton("Exit", 150, 360, 100, 25) GUISetState(@SW_SHOW) While 1 Switch GUIGetMsg() Case $GUI_EVENT_CLOSE, $idBtnExit Exit EndSwitch WEnd EndFunc ;==>Example Func WM_NOTIFY($hWnd, $iMsg, $wParam, $lParam) #forceref $hWnd, $iMsg, $wParam Local $hWndFrom, $iIDFrom, $iCode, $tNMHDR Local $tAUTOBREAK, $tAUTOSIZE, $tNMREBAR, $tCHEVRON, $tCHILDSIZE, $tOBJECTNOTIFY $tNMHDR = DllStructCreate($tagNMHDR, $lParam) $hWndFrom = HWnd(DllStructGetData($tNMHDR, "hWndFrom")) $iIDFrom = DllStructGetData($tNMHDR, "IDFrom") $iCode = DllStructGetData($tNMHDR, "Code") Switch $hWndFrom Case $g_hReBar Switch $iCode Case $RBN_AUTOBREAK ; Notifies a rebar's parent that a break will appear in the bar. The parent determines whether to make the break ; Return value not used Case $RBN_AUTOSIZE ; Sent by a rebar control created with the $RBS_AUTOSIZE style when the rebar automatically resizes itself ; Return value not used Case $RBN_BEGINDRAG ; Sent by a rebar control when the user begins dragging a band Return 0 ; to allow the rebar to continue the drag operation ; Return 1 ; nonzero to abort the drag operation Case $RBN_CHEVRONPUSHED ; Sent by a rebar control when a chevron is pushed ; When an application receives this notification, it is responsible for displaying a popup menu with items for each hidden tool. ; Use the rc member of the NMREBARCHEVRON structure to find the correct position for the popup menu ; Return value not used Case $RBN_CHILDSIZE ; Sent by a rebar control when a band's child window is resized ; Return value not used Case $RBN_DELETEDBAND ; Sent by a rebar control after a band has been deleted ; Return value not used Case $RBN_DELETINGBAND ; Sent by a rebar control when a band is about to be deleted ; Return value not used Case $RBN_ENDDRAG ; Sent by a rebar control when the user stops dragging a band ; Return value not used Case $RBN_GETOBJECT ; Sent by a rebar control created with the $RBS_REGISTERDROP style when an object is dragged over a band in the control ; Return value not used Case $RBN_HEIGHTCHANGE ; Sent by a rebar control when its height has changed ; Rebar controls that use the $CCS_VERT style send this notification message when their width changes ; Return value not used Case $RBN_LAYOUTCHANGED ; Sent by a rebar control when the user changes the layout of the control's bands ; Return value not used Case $RBN_MINMAX ; Sent by a rebar control prior to maximizing or minimizing a band ; Return 1 ; a non-zero value to prevent the operation from taking place Return 0 ; zero to allow it to continue EndSwitch EndSwitch Return $GUI_RUNDEFMSG EndFunc ;==>WM_NOTIFY Func WM_SIZE($hWnd, $iMsg, $iwParam, $ilParam) $wPos = WinGetPos($hWnd) ControlMove($hWnd, "", $g_hReBar, 0, 0, $wPos[2]) Return $GUI_RUNDEFMSG EndFunc