Author Topic: WebBrowser Control: CCS Dock Menu  (Read 4668 times)

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Offline José Roca

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WebBrowser Control: CCS Dock Menu
« on: August 31, 2011, 01:52:27 AM »
 
The following example hosts an instance of the WebBrowser control and calls the Navigate2 method to load a web page that implements a CCS dock menu. Once loaded, it connects with the events fired by the page to detect which image has been clicked.

The CCS dock menu is the work of Nick La: http://www.ndesign-studio.com/blog/mac/css-dock-menuhttp:/www.ndesign-studio.com/blog/mac/css-dock-menu

I just have modified the .html pages to add identifiers to the anchors.

The attached file contains all you need to run the example. Preserve directory structure when unzipping to the folder of your choice.

Code: [Select]
' ########################################################################################
' This example demonstrates how to load a web page an detect which element has been clicked.
' ########################################################################################

' CSED_PBWIN - Use the PBWIN compiler
#COMPILE EXE
#DIM ALL
%UNICODE = 1

' // Include files for external files
%USEWEBBROWSER = 1            ' // Use the WebBrowser control
#INCLUDE ONCE "CWindow.inc"   ' // CWindow class

%IDC_WEBBROWSER = 101

' ========================================================================================
' Main
' ========================================================================================
FUNCTION WinMain (BYVAL hInstance AS DWORD, BYVAL hPrevInstance AS DWORD, BYVAL lpszCmdLine AS WSTRINGZ PTR, BYVAL nCmdShow AS LONG) AS LONG

   ' // Set process DPI aware
'   SetProcessDPIAware

   ' // Create an instance of the class
   LOCAL pWindow AS IWindow
   pWindow = CLASS "CWindow"
   IF ISNOTHING(pWindow) THEN EXIT FUNCTION

   ' // Create the main window
   pWindow.CreateWindow(%NULL, "CSS Dock Menu", 0, 0, 0, 0, 0, 0, CODEPTR(WindowProc))
   ' // Set the client size
   pWindow.SetClientSize 650, 350
   ' // Center the window
   pWindow.CenterWindow

   ' // Add a WebBrowser control
   LOCAL hCtl AS DWORD
   LOCAL bstrURL AS WSTRING

   ' // You can pass a URL
   bstrURL = EXE.Path$ & "css-dock-top.html"

   ' // Create an instance of the event class
   LOCAL pWBEvents AS DWebBrowserEvents2Impl
   pWBEvents = CLASS "CDWebBrowserEvents2"

   ' // Create the control
   hCtl = pWindow.AddWebBrowserControl(pWindow.hwnd, %IDC_WEBBROWSER, bstrURL, pWBEvents, 0, 0, pWindow.ClientWidth, pWindow.ClientHeight)
   SetFocus hCtl

   ' // Default message pump (you can replace it with your own)
   pWindow.DoEvents(nCmdShow)

END FUNCTION
' ========================================================================================

' ========================================================================================
' Main Window procedure
' ========================================================================================
FUNCTION WindowProc (BYVAL hWnd AS DWORD, BYVAL wMsg AS DWORD, BYVAL wParam AS DWORD, BYVAL lParam AS LONG) AS LONG

   STATIC pWindow AS IWindow        ' // Reference to the IWindow interface

   SELECT CASE wMsg

      CASE %WM_CREATE
         ' // Get a reference to the IWindow interface from the CREATESTRUCT structure
         pWindow = CWindow_GetObjectFromCreateStruct(lParam)
         EXIT FUNCTION

      CASE %WM_COMMAND
         SELECT CASE LO(WORD, wParam)
            CASE %IDCANCEL
               IF HI(WORD, wParam) = %BN_CLICKED THEN
                  SendMessage hWnd, %WM_CLOSE, 0, 0
                  EXIT FUNCTION
               END IF
         END SELECT

      CASE %WM_SYSCOMMAND
         ' Capture this message and send a WM_CLOSE message
         IF (wParam AND &HFFF0) = %SC_CLOSE THEN
            SendMessage hWnd, %WM_CLOSE, 0, 0
            EXIT FUNCTION
         END IF

      CASE %WM_SIZE
         ' Resizes the control
         IF wParam <> %SIZE_MINIMIZED THEN
            pWindow.MoveWindow GetDlgItem(hwnd, %IDC_WEBBROWSER), 0, 0, pWindow.ClientWidth, pWindow.ClientHeight, %TRUE
         END IF

      CASE %WM_DESTROY
         PostQuitMessage 0
         EXIT FUNCTION

   END SELECT

   FUNCTION = DefWindowProc(hWnd, wMsg, wParam, lParam)

END FUNCTION
' ========================================================================================

' ########################################################################################
' Class CDWebBrowserEvents2
' Interface name = DWebBrowserEvents2
' IID = {34A715A0-6587-11D0-924A-0020AFC7AC4D}
' Web Browser Control events interface
' Attributes = 4112 [&H1010] [Hidden] [Dispatchable]
' ########################################################################################

CLASS CDWebBrowserEvents2 GUID$("{700B73A2-CCFC-4FE0-B9AC-D5853D71B7B9}") AS EVENT

   INSTANCE pIWebBrowser2 AS IWebBrowser2
   INSTANCE pHTMLDocumentEvents2 AS HTMLDocumentEvents2Impl

   ' =====================================================================================
   CLASS METHOD Destroy
      ' Disconnect events
      IF ISOBJECT(pHTMLDocumentEvents2) THEN EVENTS END pHTMLDocumentEvents2
   END METHOD
   ' =====================================================================================

' ========================================================================================
' Implementation of the interface
' ========================================================================================
INTERFACE DWebBrowserEvents2Impl GUID$("{34A715A0-6587-11D0-924A-0020AFC7AC4D}") AS EVENT

  INHERIT IDispatch

   ' =====================================================================================
   METHOD BeforeNavigate2 <250> ( _
     BYVAL pDisp AS IDispatch _                         ' __in IDispatch* pDisp
   , BYREF vURL AS VARIANT _                            ' __in VARIANT* URL
   , BYREF vFlags AS VARIANT _                          ' __in VARIANT* Flags
   , BYREF vTargetFrameName AS VARIANT _                ' __in VARIANT* TargetFrameName
   , BYREF vPostData AS VARIANT _                       ' __in VARIANT* PostData
   , BYREF vHeaders AS VARIANT _                        ' __in VARIANT* Headers
   , BYREF bCancel AS INTEGER _                         ' __in_out VARIANT_BOOL* Cancel
   )                                                    ' void

      ' Get a reference to the WebBrowser control
      IF ISNOTHING(pIWebBrowser2) THEN pIWebBrowser2 = pDisp
      IF ISNOTHING(pIWebBrowser2) THEN EXIT METHOD
      ' If there was a previous loaded page, disconnect from the events
      IF ISOBJECT(pHTMLDocumentEvents2) THEN
         EVENTS END pHTMLDocumentEvents2
         pHTMLDocumentEvents2 = NOTHING
      END IF

   END METHOD
   ' =====================================================================================

   ' =====================================================================================
   METHOD DocumentComplete <259> ( _
     BYVAL pDisp AS IDispatch _                         ' __in IDispatch* pDisp
   , BYREF vURL AS VARIANT _                            ' __in VARIANT* URL
   )                                                    ' void

      ' Get a reference to the IHTMLDocument2 interface
      LOCAL pHTMLDocument2 AS IHTMLDocument2
      pHTMLDocument2 = pIWebBrowser2.Document
      IF ISNOTHING(pHTMLDocument2) THEN EXIT METHOD
      ' Connect to the events fired by the page
      pHTMLDocumentEvents2 = CLASS "CHTMLDocumentEvents2"
      IF ISNOTHING(pHTMLDocumentEvents2) THEN EXIT METHOD
      EVENTS FROM pHTMLDocument2 CALL pHTMLDocumentEvents2

   END METHOD
   ' =====================================================================================

END INTERFACE

END CLASS
' ########################################################################################


' ########################################################################################
' Class CHTMLDocumentEvents2
' Interface name = HTMLDocumentEvents2
' IID = {3050F613-98B5-11CF-BB82-00AA00BDCE0B}
' Attributes = 4112 [&H1010] [Hidden] [Dispatchable]
' ########################################################################################

CLASS CHTMLDocumentEvents2 GUID$("{1FFB0071-8BCC-4BBD-BC29-A662FAE87C82}") AS EVENT

INTERFACE HTMLDocumentEvents2Impl GUID$("{3050F613-98B5-11CF-BB82-00AA00BDCE0B}") AS EVENT

  INHERIT IDispatch

   ' =====================================================================================
   METHOD onclick <-600> ( _
     BYVAL pEvtObj AS IHTMLEventObj _                   ' __in IHTMLEventObj* pEvtObj
   )                                                    ' void

      LOCAL pElement AS IHTMLElement             ' // Element that has fired the event
      LOCAL pHTMLDocument2 AS IHTMLDocument2     ' // Document object
      LOCAL bstrId AS WSTRING                    ' // Identifier of the element that has fired the event

      ' // Get a reference to the element that has fired the event
      IF ISOBJECT(pEvtObj) THEN pElement = pEvtObj.srcElement
      IF ISNOTHING(pElement) THEN EXIT METHOD

      ' // Get a reference to the IHTMLDocument2 interface
      pHTMLDocument2 = pElement.document
      IF ISNOTHING(pHTMLDocument2) THEN EXIT METHOD

      ' // Get the identifier of the element that has fired the event
      bstrId = pElement.id

      SELECT CASE bstrId
         CASE "Home", "Contact", "Portfolio", "Music", "Video", "History", "Calendar", "Links", "RSS", "RSS2"
            MSGBOX "You have clicked " & bstrId
      END SELECT

   END METHOD
   ' =====================================================================================

END INTERFACE

END CLASS
' ########################################################################################