htmlctrl.cpp

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////////////////////////////////////////////////////////////////
// Vckbase Online Journal -- Feb 2000
// Compiles with Visual C++ 6.0, runs on Windows 98 and probably NT too.
//
// ---
// AboutHtml shows how to implement an HTML About Dialog using a
// new class, CHtmlCtrl, that lets you use CHtmlView as a control in a dialog.


#include "StdAfx.h"
#include "HtmlCtrl.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

IMPLEMENT_DYNAMIC(CHtmlCtrl, CHtmlView)
BEGIN_MESSAGE_MAP(CHtmlCtrl, CHtmlView)
	ON_WM_DESTROY()
	ON_WM_MOUSEACTIVATE()
END_MESSAGE_MAP()

//////////////////
// Create control in same position as an existing static control with
// the same ID (could be any kind of control, really)
//
BOOL CHtmlCtrl::CreateFromStatic(UINT nID, CWnd* pParent)
{
	CStatic wndStatic;
	if (!wndStatic.SubclassDlgItem(nID, pParent))
		return FALSE;

	// Get static control rect, convert to parent's client coords.
	CRect rc;
	wndStatic.GetWindowRect(&rc);
	pParent->ScreenToClient(&rc);
	wndStatic.DestroyWindow();

	// create HTML control (CHtmlView)
	return Create(NULL,						 // class name
		NULL,										 // title
		(WS_CHILD | WS_VISIBLE ),			 // style
		rc,										 // rectangle
		pParent,									 // parent
		nID,										 // control ID
		NULL);									 // frame/doc context not used
}

////////////////
// Override to avoid CView stuff that assumes a frame.
//
void CHtmlCtrl::OnDestroy()
{
	// This is probably unecessary since ~CHtmlView does it, but
	// safer to mimic CHtmlView::OnDestroy.
	if (m_pBrowserApp) {
		m_pBrowserApp->Release();
		m_pBrowserApp = NULL;
	}
	CWnd::OnDestroy(); // bypass CView doc/frame stuff
}

////////////////
// Override to avoid CView stuff that assumes a frame.
//
int CHtmlCtrl::OnMouseActivate(CWnd* pDesktopWnd, UINT nHitTest, UINT msg)
{
	// bypass CView doc/frame stuff
	return CWnd::OnMouseActivate(pDesktopWnd, nHitTest, msg);
}

//////////////////
// Override navigation handler to pass to "app:" links to virtual handler.
// Cancels the navigation in the browser, since app: is a pseudo-protocol.
//
void CHtmlCtrl::OnBeforeNavigate2( LPCTSTR lpszURL,
	DWORD nFlags,
	LPCTSTR lpszTargetFrameName,
	CByteArray& baPostedData,
	LPCTSTR lpszHeaders,
	BOOL* pbCancel )
{
	const char APP_PROTOCOL[] = "app:";
	int len = _tcslen(APP_PROTOCOL);
	if (_tcsnicmp(lpszURL, APP_PROTOCOL, len)==0) {
		OnAppCmd(lpszURL + len);
		*pbCancel = TRUE;
	}
}

//////////////////
// Called when the browser attempts to navigate to "app:foo"
// with "foo" as lpszWhere. Override to handle app commands.
//
void CHtmlCtrl::OnAppCmd(LPCTSTR lpszWhere)
{
	// default: do nothing
}