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Back to article list Search Articles Add Comment Printer friendly Direct link COM: Constructing Interfaces 4 2002-12-29 -- Andy Ireland Newsgroups: comp.lang.clarion
> Thanks very much for your reply - though I am still like trying to get
> a drink of water from a firehose !
> I have posted Oleview cut/paste in the NG, and can post
> complette source code (c++) - It's free.
The C++ is best.
> I have tryed this:
>
> IInterface interface,com
No, this should be like a class declaration containing the methods (no
properties) that are shown in OleView. I see the interface in OleView is
a dispinterface meaning it can only be called using late binding. Is
there also a dual interface? Most good, well designed controls unless
coded specifically for VB should use dual interfaces as per the ActiveX
specification.
An example are these from the WebBrowser control....
shdocvw::IWebBrowser interface(IDispatch),com
GoBack procedure,HRESULT,raw
GoForward procedure,HRESULT,raw
GoHome procedure,HRESULT,raw
GoSearch procedure,HRESULT,raw
Navigate procedure(BSTR URL,
*tVariant Flags,
*tVariant TargetFrameName, |
*tVariant PostData, |
*tVariant Headers),|
HRESULT,raw
Refresh procedure,HRESULT,raw
Refresh2 procedure(*tVariant Level),HRESULT,raw
Stop procedure,HRESULT,raw
get_Application procedure(*long pvObject),HRESULT,raw
!**IDispatch pvObject
get_Parent procedure(*long pvObject),HRESULT,raw
!**IDispatch pvObject
get_Container procedure(*long pvObject),HRESULT,raw
!**IDispatch pvObject
get_Document procedure(*long pvObject),HRESULT,raw
!**IDispatch pvObject
get_TopLevelContainer procedure(*short pVal),HRESULT,raw
get_Type procedure(*BSTR pVal),HRESULT,raw
get_Left procedure(*long pVal),HRESULT,raw
put_Left procedure(long _Left),HRESULT,raw
get_Top procedure(*long pVal),HRESULT,raw
put_Top procedure(long Top),HRESULT,raw
get_Width procedure(*long pVal),HRESULT,raw
put_Width procedure(long _Width),HRESULT,raw
get_Height procedure(*long pVal),HRESULT,raw
put_Height procedure(long Height),HRESULT,raw
get_LocationName procedure(*BSTR pVal),HRESULT,raw
get_LocationURL procedure(*BSTR pVal),HRESULT,raw
get_Busy procedure(*short pVal),HRESULT,raw
end
shdocvw::IWebBrowserApp interface(shdocvw::IWebBrowser),com
Quit procedure,HRESULT,raw
ClientToWindow procedure(*long pcx, |
*long pcy),HRESULT,raw
PutProperty procedure(BSTR Property, |
tVariant vtValue),HRESULT,raw
GetProperty procedure(BSTR Property, |
*tVariant pVal),HRESULT,raw
get_Name procedure(*BSTR pVal),HRESULT,raw
get_HWND procedure(*long pVal),HRESULT,raw
get_FullName procedure(*BSTR pVal),HRESULT,raw
get_Path procedure(*BSTR pVal),HRESULT,raw
get_Visible procedure(*short pVal),HRESULT,raw
put_Visible procedure(short Visible),HRESULT,raw
get_StatusBar procedure(*short pVal),HRESULT,raw
put_StatusBar procedure(short StatusBar),HRESULT,raw
get_StatusText procedure(*BSTR pVal),HRESULT,raw
put_StatusText procedure(BSTR StatusText),HRESULT,raw
get_ToolBar procedure(*long pVal),HRESULT,raw
put_ToolBar procedure(long ToolBar),HRESULT,raw
get_MenuBar procedure(*short pVal),HRESULT,raw
put_MenuBar procedure(short MenuBar),HRESULT,raw
get_FullScreen procedure(*short pVal),HRESULT,raw
put_FullScreen procedure(short FullScreen),HRESULT,raw
end
shdocvw::IWebBrowser2 interface(shdocvw::IWebBrowserApp),com
Navigate2 procedure(*tVariant URL, |
*tVariant Flags, |
*tVariant TargetFrameName, |
*tVariant PostData, |
*tVariant Headers),|
HRESULT,raw
QueryStatusWB procedure(OLECMDID cmdID, |
*OLECMDF pVal),|
HRESULT,raw
ExecWB procedure(OLECMDID cmdID, |
OLECMDEXECOPT cmdexecopt, |
*tVariant pvaIn, |
*tVariant pvaOut),|
HRESULT,raw
ShowBrowserBar procedure(*tVariant pvaClsid, |
*tVariant pvarShow, |
*tVariant pvarSize),|
HRESULT,raw
get_ReadyState procedure(*tagREADYSTATE pVal),|
HRESULT,raw
get_Offline procedure(*short pVal),HRESULT,raw
put_Offline procedure(short Offline),HRESULT,raw
get_Silent procedure(*short pVal),HRESULT,raw
put_Silent procedure(short Silent),HRESULT,raw
get_RegisterAsBrowser procedure(*short pVal),HRESULT,raw
put_RegisterAsBrowser procedure(short RegisterAsBrowser),|
HRESULT,raw
get_RegisterAsDropTarget procedure(*short pVal),HRESULT,raw
put_RegisterAsDropTarget procedure(short RegisterAsDropTarget),|
HRESULT,raw
get_TheaterMode procedure(*short pVal),HRESULT,raw
put_TheaterMode procedure(short TheaterMode),|
HRESULT,raw
get_AddressBar procedure(*short pVal),HRESULT,raw
put_AddressBar procedure(short AddressBar),HRESULT,raw
get_Resizable procedure(*short pVal),HRESULT,raw
put_Resizable procedure(short Resizable),HRESULT,raw
end
> code
> IItem &=3D ('A835836A-7519-4BA9-B235-90A5F0211FCF')
No, this is just the GUID that identifies the control. You need to ask
the Clarion OLE control of the instantiated object for the address of
the interface that you want to call a method on.
> Title_ = IItem.Add()
This would be the syntax. But it would return an HRESULT and the return
value would be an [out] param or one that is passed in by address for
setting for return.
i.e
hr = IItem.Add(Title) where Title is passed by address for filling.
For an example, see the get_xxxx and put_xxxx methods in the above
interfaces. The put methods pass in a value, the get methods receive a
value via a param passed by address. Where a pointer to a pointer is
returned a *long is used and the returned pointer is cast to the
appropriate object type such as an Interface.
Regards
Andy
Plugware Solutions.com Ltd, taking the puzzle out of I.T
Tel : +44 1249 813335
Fax : +44 1249 813462
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