Antonio, excuse me, I sent you an html file by email.
hb_DynCall( { "webview_navigate", pLib, ;
hb_bitOr( HB_DYN_CTYPE_VOID, hb_SysCallConv() ),;
HB_DYN_CTYPE_VOID_PTR, HB_DYN_CTYPE_CHAR_PTR },;
hWebView, "data:text/html,"+CRLF+filestr("my.html"))
Dear Yuri,
If you upload your HTML file to your hosting server and then use webview to navigate to it, it works fine. I just tested it.
But if we try to load it reading the file, then it crashes. Not sure why. We have noticed that with other HTML files too and still we
are wondering why.
// Navigates webview to the given URL. URL may be a properly encoded data URI.
// Examples:
// webview_navigate(w, "https://github.com/webview/webview");
// webview_navigate(w, "data:text/html,%3Ch1%3EHello%3C%2Fh1%3E");
// webview_navigate(w, "data:text/html;base64,PGgxPkhlbGxvPC9oMT4=");
Solved 
oWebView:Navigate( "data:text/html;base64," + hb_base64Encode( hb_memoRead( "my.html" ) ) )
function Main()
private pLib := hb_LibLoad( "webview.dll" )
private oWnd
DEFINE DIALOG oWnd TITLE "FWH desktop app" SIZE 1000, 600
ACTIVATE DIALOG oWnd ON INIT CreateWebView() CENTER
hb_LibFree( pLib )
return NIL
function CreateWebView
local hWebView
hWebView := hb_DynCall( { "webview_create", pLib, ;
hb_bitOr( HB_DYN_CTYPE_VOID_PTR, hb_SysCallConv() ), ;
HB_DYN_CTYPE_VOID_PTR, hb_SysLong(), HB_DYN_CTYPE_VOID_PTR }, ;
oWnd:hWnd, 0)
hb_DynCall( { "webview_navigate", pLib, ;
hb_bitOr( HB_DYN_CTYPE_VOID, hb_SysCallConv() ),;
HB_DYN_CTYPE_VOID_PTR, HB_DYN_CTYPE_CHAR_PTR },;
hWebView, "data:text/html;base64,"+ ;
hb_base64Encode(hb_memoread("my.html")))
hb_DynCall( { "webview_run", pLib, ;
hb_bitOr( HB_DYN_CTYPE_VOID, hb_SysCallConv() ), ;
HB_DYN_CTYPE_VOID, HB_DYN_CTYPE_VOID_PTR }, hWebView )
return nilYou have to supply 0, 0 to WebView_Create(). It does not work using params there
But you can make it child of any other window using SetParent( webview_get_window( hWebView ), hWndParent )
Harbour doesn't understand this syntax:
webview_get_window( hWebView )
I tried to read the window handle, but I get empty.
hWebView := hb_DynCall( { "webview_create", pLib, ;
hb_bitOr( HB_DYN_CTYPE_VOID_PTR, hb_SysCallConv() ), ;
HB_DYN_CTYPE_VOID_PTR, hb_SysLong(), HB_DYN_CTYPE_VOID_PTR }, 0, 0)
hWb:=hb_DynCall( { "webview_get_window", pLib, ;
hb_bitOr( HB_DYN_CTYPE_VOID, hb_SysCallConv() ), ;
HB_DYN_CTYPE_VOID, HB_DYN_CTYPE_VOID_PTR }, hWebView )
Dear Yuri,
You need the new Class TWebView. It properly works with Borland, Microsoft, MinGW and xHarbour too
Its going to be available in a few days with the new FWH 22.06 version
Is it possible to install webview 2 runtime under Linux ?
It uses Cocoa/WebKit on macOS, gtk-webkit2 on Linux and Edge on Windows 10.