Lindsay Mathieson
Email : <lmathieson@optusnet.com.au>
This is prelimanary stuff - the controls need extra methods and events etc,
feel free to email with suggestions &/or patches.
Tested with wxWindows 2.3.2.
Built with MS Visual C++ 6.0 & DevStudio
Minor use of templates and STL
-----------------------------------------------------------
This sample illustrates using wxActiveX and wxIEHtmlWin too:
1. Host an arbitrary ActiveX control
2. Specifically host the MSHTML Control
wxActiveX:
==========
wxActiveX is used to host and siplay any activeX control, all the wxWindows developer
needs to know is either the ProgID or CLSID of the control in question.
Derived From:
- wxWindow
Include Files:
- wxactivex.h
Source Files:
- wxactivex.cpp
Event Handling:
---------------
- EVT_ACTIVEX(id, eventName, handler) (handler = void OnActiveX(wxActiveXEvent& event))
class wxActiveXEvent : public wxNotifyEvent
int ParamCount() const;
wxVariant operator[] (int idx) const; // parameter by index
wxVariant& operator[] (int idx);
wxVariant operator[] (wxString name) const; // named parameters
wxVariant& operator[] (wxString name);
Members:
--------
wxActiveX::wxActiveX(wxWindow * parent, REFCLSID clsid, wxWindowID id = -1);
- Creates a activeX control identified by clsid
e.g
wxFrame *frame = new wxFrame(this, -1, "test");
wxActiveX *X = new wxActiveX(frame, CLSID_WebBrowser);
wxActiveX::wxActiveX(wxWindow * parent, wxString progId, wxWindowID id = -1);
- Creates a activeX control identified by progId
e.g.
wxFrame *frame = new wxFrame(this, -1, "test");
wxActiveX *X = new wxActiveX(frame, "MSCAL.Calendar");
wxActiveX::~wxActiveX();
- Destroys the control
- disconnects all connection points
HRESULT wxActiveX::ConnectAdvise(REFIID riid, IUnknown *eventSink);
- Connects a event sink. Connections are automaticlly diconnected in the destructor
e.g.
FS_DWebBrowserEvents2 *events = new FS_DWebBrowserEvents2(iecontrol);
hret = iecontrol->ConnectAdvise(DIID_DWebBrowserEvents2, events);
if (! SUCCEEDED(hret))
delete events;
Sample Events:
--------------
EVT_ACTIVEX(ID_MSHTML, "BeforeNavigate2", OnMSHTMLBeforeNavigate2X)
void wxIEFrame::OnMSHTMLBeforeNavigate2X(wxActiveXEvent& event)
{
wxString url = event["Url"];
int rc = wxMessageBox(url, "Allow open url ?", wxYES_NO);
if (rc != wxYES)
event["Cancel"] = true;
};
wxIEHtmlWin:
============
wxIEHtmlWin is a specialisation of the wxActiveX control for hosting the MSHTML control.
Derived From:
- wxActiveX
- wxWindow
Event Handling:
---------------
- class wxMSHTMLEvent
- EVT_MSHTML_BEFORENAVIGATE2
* url = event.m_text1
* event.Veto() to cancel
Generated before an attempt to browse a new url
- EVT_MSHTML_NEWWINDOW2
* event.Veto() to cancel
Generated when the control is asked create a new window (e.g a popup)
- EVT_MSHTML_DOCUMENTCOMPLETE
* url = event.m_text1
Generated after the document has finished loading
- EVT_MSHTML_PROGRESSCHANGE
* event.m_long1 = progress so far
* event.m_long2 = max range of progress
- EVT_MSHTML_STATUSTEXTCHANGE
* status = event.m_text1
- EVT_MSHTML_TITLECHANGE
* title = event.m_text1
Members:
--------
wxIEHtmlWin::wxIEHtmlWin(wxWindow * parent, wxWindowID id = -1);
- Constructs and initialises the MSHTML control
- LoadUrl("about:blank") is called
wxIEHtmlWin::~wxIEHtmlWin();
- destroys the control
void wxIEHtmlWin::LoadUrl(const wxString&);
- Attempts to browse to the url, the control uses its internal (MS)
network streams
bool wxIEHtmlWin::LoadString(wxString html);
- Load the passed HTML string
bool wxIEHtmlWin::LoadStream(istream *strm);
- load the passed HTML stream. The control takes ownership of
the pointer, deleting when finished.
void wxIEHtmlWin::SetCharset(wxString charset);
- Sets the charset of the loaded document
void wxIEHtmlWin::SetEditMode(bool seton);
- Sets edit mode.
NOTE: This does work, but is bare bones - we need more events exposed before
this is usable as an HTML editor.
bool wxIEHtmlWin::GetEditMode();
- Returns the edit mode setting
wxString wxIEHtmlWin::GetStringSelection(bool asHTML = false);
- Returns the currently selected text (plain or HTML text)
wxString GetText(bool asHTML = false);
- Returns the body text (plain or HTML text)
Lindsay Mathieson
Email : <lmathieson@optusnet.com.au>
2f4c0a1618