WebBrowser Control KeyPreview
in [Visual Basic]
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From: k_zeon on 18 Dec 2009 14:56 Hi I have a Form and on the form a WebBrowser Control I use this to display info. I have other forms and set the KeyPreview of the form to True and have a keypress event set so that if i press the escape key the form unloads But the form I have the Webbrowser control on does not trap the event and will not close is there another way to trap this event ie API or such any help is appreciated many thanks Garry
From: Nobody on 18 Dec 2009 15:08 "k_zeon" <silvermaine2000(a)googlemail.com> wrote in message news:O4ODkwBgKHA.4528(a)TK2MSFTNGP06.phx.gbl... > Hi > > I have a Form and on the form a WebBrowser Control > I use this to display info. > > I have other forms and set the KeyPreview of the form to True and have a > keypress event set so that if i press the escape key the form unloads > > But the form I have the Webbrowser control on does not trap the event and > will not close > > is there another way to trap this event ie API or such > > any help is appreciated Use SetWindowsHookEx(WH_KEYBOARD). Search the web for samples. Another way, but less elegant is to call GetAsyncKeyState(vbKeyEscape) in a Timer, but you may not be able to see that the key was pressed if you are not calling it fast enough.
From: k_zeon on 18 Dec 2009 16:20 Hi I found some examples of SetWindowsHookEx(WH_KEYBOARD). but cannot get it to work properly If I have one form then all works ok. What I would like to do is set it up so it allows me to work with multiple forms ie each form that loads I can hit the escape button and the form unloads. at the moment i have tweaked some simple code but it always unloads all my forms Here is my Module code:: Private Declare Function SetWindowsHookEx Lib "user32" Alias "SetWindowsHookExA" (ByVal idHook As Long, ByVal lpfn As Long, ByVal hmod As Long, ByVal dwThreadId As Long) As Long Private Declare Function UnhookWindowsHookEx Lib "user32" (ByVal hHook As Long) As Long Private Declare Function CallNextHookEx Lib "user32" (ByVal hHook As Long, ByVal ncode As Long, ByVal wParam As Long, ByVal lParam As Long) As Long Private Const WH_KEYBOARD = 2 Private mlngHookId As Long Private MyFormtoUnload As Form Public Sub SetFormName(ByVal Formname As Form) Set MyFormtoUnload = Formname End Sub Public Sub StartKeyHook() mlngHookId = SetWindowsHookEx(WH_KEYBOARD, AddressOf KeyProc, App.hInstance, App.ThreadID) End Sub Public Sub StopKeyHook() UnhookWindowsHookEx mlngHookId End Sub Private Function KeyProc(ByVal ncode As Long, ByVal wParam As Long, ByVal lParam As Long) As Long On Error GoTo err If wParam = 27 Then Unload MyFormtoUnload End If KeyProc = CallNextHookEx(mlngHookId, ncode, wParam, lParam) err: End Function And here is the form code:: Private Sub Form_Activate() SetFormName Me End Sub Private Sub Form_Load() StartKeyHook End Sub Private Sub Form_Unload(Cancel As Integer) StopKeyHook End Sub hope someone can help thanks Garry "Nobody" <nobody(a)nobody.com> wrote in message news:ObZWq3BgKHA.5564(a)TK2MSFTNGP06.phx.gbl... > "k_zeon" <silvermaine2000(a)googlemail.com> wrote in message > news:O4ODkwBgKHA.4528(a)TK2MSFTNGP06.phx.gbl... >> Hi >> >> I have a Form and on the form a WebBrowser Control >> I use this to display info. >> >> I have other forms and set the KeyPreview of the form to True and have a >> keypress event set so that if i press the escape key the form unloads >> >> But the form I have the Webbrowser control on does not trap the event and >> will not close >> >> is there another way to trap this event ie API or such >> >> any help is appreciated > > Use SetWindowsHookEx(WH_KEYBOARD). Search the web for samples. Another > way, but less elegant is to call GetAsyncKeyState(vbKeyEscape) in a Timer, > but you may not be able to see that the key was pressed if you are not > calling it fast enough. > >
From: Henning on 18 Dec 2009 16:22 "k_zeon" <silvermaine2000(a)googlemail.com> skrev i meddelandet news:O4ODkwBgKHA.4528(a)TK2MSFTNGP06.phx.gbl... > Hi > > I have a Form and on the form a WebBrowser Control > I use this to display info. > > I have other forms and set the KeyPreview of the form to True and have a > keypress event set so that if i press the escape key the form unloads > > But the form I have the Webbrowser control on does not trap the event and > will not close > > is there another way to trap this event ie API or such > > any help is appreciated > > many thanks > > Garry > Does it work if you add an Exit button and set its Cancel property to True. In its Click Event use Unload Me to Close the Form. /Henning
From: k_zeon on 18 Dec 2009 16:41
excellent. so simple but effective many thanks Garry "Henning" <computer_hero(a)coldmail.com> wrote in message news:OPpvylCgKHA.2160(a)TK2MSFTNGP02.phx.gbl... > > "k_zeon" <silvermaine2000(a)googlemail.com> skrev i meddelandet > news:O4ODkwBgKHA.4528(a)TK2MSFTNGP06.phx.gbl... >> Hi >> >> I have a Form and on the form a WebBrowser Control >> I use this to display info. >> >> I have other forms and set the KeyPreview of the form to True and have a >> keypress event set so that if i press the escape key the form unloads >> >> But the form I have the Webbrowser control on does not trap the event and >> will not close >> >> is there another way to trap this event ie API or such >> >> any help is appreciated >> >> many thanks >> >> Garry >> > > Does it work if you add an Exit button and set its Cancel property to > True. In its Click Event use Unload Me to Close the Form. > > /Henning > > |