The following example demonstrates how to display a Google Map in an instance of the Web Browser control embeded in a PowerBASIC application.
' ########################################################################################
' Microsoft Windows
' File: CW_WB_GoogleMap.bas
' Contents: WebBrowser example - Google map.
' Compilers: PBWIN 10.02+, PBCC 6.02+
' Headers: Windows API headers 2.03+
' Copyright (c) 2011 José Roca. Freeware. Use at your own risk.
' THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
' EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
' MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
' ########################################################################################
#COMPILE EXE
#DIM ALL
%UNICODE = 1
' // Include files for external files
%USEWEBBROWSER = 1 ' // Use the WebBrowser control
#INCLUDE ONCE "CWindow.inc" ' // CWindow class
' // Identifier
%IDC_WEBBROWSER = 1001
' ########################################################################################
' 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, "Web Browser Template: Google Map", 0, 0, 0, 0, 0, 0, CODEPTR(WindowProc))
pWindow.SetClientSize 700, 500
' // Center the window
pWindow.CenterWindow
' Web Browser zoom
' IF pWindow.IsProcessDPIAware THEN pWindow.WBZoom = 100 * pWindow.rxRatio
' // Build the html script
LOCAL s AS WSTRING
LOCAL cx, cy AS DOUBLE
LOCAL zoom AS LONG
cx = 39.47#
cy = 0.28#
zoom = 7
s = "<!DOCTYPE html>"
s += "<html>"
s += "<head>"
s += "<meta name='viewport' content='initial-scale=1.0, user-scalable=no' />"
s += "<style type='text/css'>" & $CRLF
s += "html { height: 100% }" & $CRLF
s += " body { height: 100%; margin: 0px; padding: 0px }" & $CRLF
s += " #map_canvas { height: 100% }" & $CRLF
s += "</style>" & $CRLF
s += "<script type='text/javascript'" & $CRLF
s += " src='http://maps.google.com/maps/api/js?sensor=false'>" & $CRLF
s += "</script>" & $CRLF
s += "<script type='text/javascript'>" & $CRLF
s += " function initialize() {" & $CRLF
s += " var latlng = new google.maps.LatLng(" & FORMAT$(cx) & "," & FORMAT$(cy) & ");" & $CRLF
s += " var myOptions = {" & $CRLF
s += " zoom: " & FORMAT$(zoom) & "," & $CRLF
s += " center: latlng," & $CRLF
s += " mapTypeId: google.maps.MapTypeId.ROADMAP" & $CRLF
s += " };" & $CRLF
s += " var map = new google.maps.Map(document.getElementById('map_canvas')," & $CRLF
s += " myOptions);" & $CRLF
s += " }" & $CRLF
s += "</script>" & $CRLF
s += "</head>" & $CRLF
s += "<body scroll='no' onload='initialize()'>" & $CRLF
s += " <div id='map_canvas' style='width:100%; height:100%'></div>" & $CRLF
s += "</body>" & $CRLF
s += "</html>" & $CRLF
' // Save the script as a temporary file
LOCAL bstrTempFileName AS WSTRING
bstrTempFileName = AfxSaveTempFile(s, "", "TMP", "html", 1)
' // Create the WebBrowser control with the embedded map
pWindow.AddWebBrowserControl(pWindow.hwnd, %IDC_WEBBROWSER, bstrTempFileName, NOTHING, 0, 0, pWindow.ClientWidth, pWindow.ClientHeight)
' // Default message pump (you can replace it with your own)
pWindow.DoEvents(nCmdShow)
END FUNCTION
' ########################################################################################
' ========================================================================================
' Main callback function.
' ========================================================================================
FUNCTION WindowProc (BYVAL hwnd AS DWORD, BYVAL uMsg AS DWORD, BYVAL wParam AS DWORD, BYVAL lParam AS LONG) AS LONG
STATIC hInstance AS DWORD ' // Instance handle
STATIC lpc AS CREATESTRUCT PTR ' // Pointer to the creation parameters
STATIC pWindow AS IWindow ' // Reference to the IWindow interface
SELECT CASE uMsg
CASE %WM_CREATE
' // Pointer to the creation parameters
lpc = lParam
' // Instance handle
hInstance = @lpc.hInstance
' // Get a reference to the IWindow interface from the CREATESTRUCT structure
pWindow = CWindow_GetObjectFromCreateStruct(lParam)
EXIT FUNCTION
CASE %WM_SYSCOMMAND
' // Capture this message and send a WM_CLOSE message
' // Note: Needed with some OCXs that, otherwise, remain in memory
IF (wParam AND &HFFF0) = %SC_CLOSE THEN
SendMessage hwnd, %WM_CLOSE, 0, 0
EXIT FUNCTION
END IF
CASE %WM_COMMAND
SELECT CASE LO(WORD, wParam)
CASE %IDCANCEL
' // If the Escape key has been pressed...
IF HI(WORD, wParam) = %BN_CLICKED THEN
' // ... close the application by sending a WM_CLOSE message
SendMessage hwnd, %WM_CLOSE, 0, 0
EXIT FUNCTION
END IF
END SELECT
CASE %WM_SIZE
IF wParam <> %SIZE_MINIMIZED THEN
' // Resize the control
pWindow.MoveWindow GetDlgItem(hwnd, %IDC_WEBBROWSER), 0, 0, pWindow.ClientWidth, pWindow.ClientHeight, %TRUE
END IF
CASE %WM_DESTROY
' // End the application
PostQuitMessage 0
EXIT FUNCTION
END SELECT
' // Pass unprocessed messages to Windows
FUNCTION = DefWindowProc(hwnd, uMsg, wParam, lParam)
END FUNCTION
' ========================================================================================
How can I get the contents of the browser control? I have an app that uses a browser control and google maps api to produce a map with a turn by turn driving directions. I want to get the directions and print them on a printer or send them in a text message.
I have tried.
SUB PTGMAPIT_BTNPRINT_Events( MyID&, CMsg&, CVal&, Cancel&)
Local txt$, hDlg AS LONG
SELECT CASE CMsg&
CASE %EZ_Click
hDlg = EZ_Handle("PTGMAPIT",0)
CONTROL GET TEXT hDlg, %IDC_WEBBROWSER TO txt$
EZ_Dprint txt$
' EZ_GetText "PTGMAPIT", %PTGMAPIT_BTNPRINT
CASE ELSE
END SELECT
END SUB
I just get "SHELL.EXPLORER" in the txt variable.
No idea. Probably you will need to use some javascript code.