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RobertKipling

"Browser" crashes on Back, Forward buttons

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RobertKipling

This code is no rocket science, but browser crashes if Back or Forward button is clicked, given that nothing has been navigated to. I found a suggestion by Microsoft, but can't make heads or tails of it, and can't figure out how to implement the suggestion in AutoIt.

http://msdn2.microsoft.com/en-us/library/a...090(VS.85).aspx

#include <GUIConstants.au3>
#include <IE.au3>
; Simple example: Embedding an Internet Explorer Object inside an AutoIt GUI
;
; See also: http://msdn.microsoft.com/workshop/browser/webbrowser/reference/objects/internetexplorer.asp

$oIE = ObjCreate("Shell.Explorer.2")
Opt("GuiResizeMode", $GUI_DOCKLEFT+$GUI_DOCKRIGHT+$GUI_DOCKTOP+$GUI_DOCKBOTTOM)

; Create a simple GUI for our output
$gui = GUICreate ( "Embedded Web control Test", 640, 580,(@DesktopWidth-640)/2, (@DesktopHeight-580)/2, BitOr($WS_OVERLAPPEDWINDOW, $WS_CLIPSIBLINGS, $WS_CLIPCHILDREN))
$client = WinGetClientSize($gui)
$GUIActiveX      = GUICtrlCreateObj   ( $oIE,   1, 30 , $client[0], $client[1]-30)
Opt("GuiResizeMode", $GUI_DOCKWIDTH+$GUI_DOCKHEIGHT+$GUI_DOCKLEFT)

$GUI_Button_Back    = GuiCtrlCreateButton   ("Back",     1, 1, 100,  30)
$GUI_Button_Forward = GuiCtrlCreateButton   ("Forward", 100, 1, 100,  30)
$GUI_Button_Home    = GuiCtrlCreateButton   ("Home",    200, 1, 100,  30)
$GUI_Button_Stop    = GuiCtrlCreateButton   ("Stop",    300, 1, 100,  30)

GUISetState ()    ;Show GUI

$oIE.navigate("google.com")

While 1

    $msg = GUIGetMsg()
        if $oIE.busy=0 Then
            $title = $oIE.document.title
            WinSetTitle($gui, "", $title)
        EndIf
    
    Select
        Case $msg = $GUI_EVENT_CLOSE
            ExitLoop
        Case $msg = $GUI_Button_Home
            $oIE.navigate("http://www.autoitscript.com")
        Case $msg = $GUI_Button_Back
            $oIE.GoBack
        Case $msg = $GUI_Button_Forward
            $oIE.GoForward
        Case $msg = $GUI_Button_Stop
            $oIE.Stop
    EndSelect
    
Wend

GUIDelete ()

Exit

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