• Andre (9/9) Dec 16 2013 Hi,
• Adam D. Ruppe (3/3) Dec 17 2013 I'm not able to run your code but are you sure the web page
• Andre (4/7) Dec 17 2013 I just checked, the dimensions of the main form are passed correctly
• Andre (9/18) Dec 18 2013 The issue was related to SysAllocString:
• Marco Leise (6/30) Dec 19 2013 Did you mean this?:
• Andre (4/6) Dec 19 2013 Exacactly. But if I have my url in a string variable,
• Adam D. Ruppe (10/13) Dec 19 2013 You can use wstring variables and convert them with
• Andre (3/16) Dec 19 2013 Thanks a lot!
• Richard Webb (6/9) Dec 19 2013 Looks like the problem there is casting a string to a wchar* - I guess
• Marco Leise (15/32) Dec 19 2013 Oh yes, you are right and I was totally ignorant of what a

Andre <andre s-e-a-p.de> writes:

Hi,

I try to embed Windows Internet Explorer into my application.
Most of the coding should be availabe. During method navigate2
I get an empty white screen. No errors is thrown but also the
web page is not loaded. Do you have some ideas?

=> Is use the windows headers from DSource and the dgui forms library.
I attached the source code.

Kind regards
André

"Adam D. Ruppe" <destructionator gmail.com> writes:

I'm not able to run your code but are you sure the web page 
control is sized in your window? One time I had a problem like 
this and it was because the control was a 1x1 pixel...

Andre <andre s-e-a-p.de> writes:

Am 17.12.2013 17:34, schrieb Adam D. Ruppe:
 I'm not able to run your code but are you sure the web page control is
 sized in your window? One time I had a problem like this and it was
 because the control was a 1x1 pixel...

I just checked, the dimensions of the main form are passed correctly
to the IWebBrowser2 instance. GetClientRect(hwnd) is used and dimensions
are evaluated correctly.

Andre <andre s-e-a-p.de> writes:

Am 16.12.2013 19:44, schrieb Andre:
 Hi,

 I try to embed Windows Internet Explorer into my application.
 Most of the coding should be availabe. During method navigate2
 I get an empty white screen. No errors is thrown but also the
 web page is not loaded. Do you have some ideas?

 => Is use the windows headers from DSource and the dgui forms library.
 I attached the source code.

 Kind regards
 André

The issue was related to SysAllocString:

VARIANT myURL;
VariantInit(&myURL);
myURL.vt = cast(VARTYPE)VARENUM.VT_BSTR;
=> myURL.bstrVal = SysAllocString(cast(const(wchar*))url);
webBrowser2.Navigate2( &myURL, null, null, null, null);

It only works with statement:
myURL.bstrVal = cast(wchar*)"http://www.google.de";

Marco Leise <Marco.Leise gmx.de> writes:

Am Wed, 18 Dec 2013 21:48:30 +0100
schrieb Andre <andre s-e-a-p.de>:

 Am 16.12.2013 19:44, schrieb Andre:
 Hi,

 I try to embed Windows Internet Explorer into my application.
 Most of the coding should be availabe. During method navigate2
 I get an empty white screen. No errors is thrown but also the
 web page is not loaded. Do you have some ideas?

 =3D> Is use the windows headers from DSource and the dgui forms library.
 I attached the source code.

 Kind regards
 Andr=C3=A9

=20
 The issue was related to SysAllocString:
=20
 VARIANT myURL;
 VariantInit(&myURL);
 myURL.vt =3D cast(VARTYPE)VARENUM.VT_BSTR;
 =3D> myURL.bstrVal =3D SysAllocString(cast(const(wchar*))url);
 webBrowser2.Navigate2( &myURL, null, null, null, null);
=20
 It only works with statement:
 myURL.bstrVal =3D cast(wchar*)"http://www.google.de";

Did you mean this?:
  myURL.bstrVal =3D "http://www.google.de"w.ptr;


--=20
Marco

Andre <andre s-e-a-p.de> writes:

Am 19.12.2013 10:58, schrieb Marco Leise:

 Did you mean this?:
    myURL.bstrVal = "http://www.google.de"w.ptr;

Exacactly. But if I have my url in a string variable,
how can I get the wchar[].ptr from my string variable,
to fill bstrVal?

"Adam D. Ruppe" <destructionator gmail.com> writes:

On Thursday, 19 December 2013 at 15:45:49 UTC, Andre wrote:
 Exacactly. But if I have my url in a string variable,
 how can I get the wchar[].ptr from my string variable,
 to fill bstrVal?

You can use wstring variables and convert them with

import std.utf;

wchar* str = toUTFz!(wchar*)(another_string_variable);

then you can fill it. Or you can also do

import std.conv;

wstring ws = to!wstring(another_string_variable);



The difference is the first one has a zero terminator, so you can 
easily pass it to C functions. The second one doesn't, but it is 
a D array so you can use .ptr and .length.

Andre <andre s-e-a-p.de> writes:

Am 19.12.2013 16:54, schrieb Adam D. Ruppe:
 On Thursday, 19 December 2013 at 15:45:49 UTC, Andre wrote:
 Exacactly. But if I have my url in a string variable,
 how can I get the wchar[].ptr from my string variable,
 to fill bstrVal?

 You can use wstring variables and convert them with

 import std.utf;

 wchar* str = toUTFz!(wchar*)(another_string_variable);

 then you can fill it. Or you can also do

 import std.conv;

 wstring ws = to!wstring(another_string_variable);



 The difference is the first one has a zero terminator, so you can easily
 pass it to C functions. The second one doesn't, but it is a D array so
 you can use .ptr and .length.

Thanks a lot!
thats the solution

Richard Webb <richard.webb boldonjames.com> writes:

On 18/12/2013 20:48, Andre wrote:
 => myURL.bstrVal = SysAllocString(cast(const(wchar*))url);


Looks like the problem there is casting a string to a wchar* - I guess 
the resulting BSTR will contain garbage instead of the intended value.


 It only works with statement:
 myURL.bstrVal = cast(wchar*)"http://www.google.de";


Treating a wchar* as a BSTR might cause unexpected things to happen - 
converting the string to a wchar* and then passing that to 
SysAllocString would be safer.

Marco Leise <Marco.Leise gmx.de> writes:

Am Thu, 19 Dec 2013 17:36:57 +0000
schrieb Richard Webb <richard.webb boldonjames.com>:

 On 18/12/2013 20:48, Andre wrote:
  > =3D> myURL.bstrVal =3D SysAllocString(cast(const(wchar*))url);
=20
=20
 Looks like the problem there is casting a string to a wchar* - I guess=20
 the resulting BSTR will contain garbage instead of the intended value.
=20
=20
  >
  > It only works with statement:
  > myURL.bstrVal =3D cast(wchar*)"http://www.google.de";
  >
=20
=20
 Treating a wchar* as a BSTR might cause unexpected things to happen -=20
 converting the string to a wchar* and then passing that to=20
 SysAllocString would be safer.

Oh yes, you are right and I was totally ignorant of what a
BSTR is! It is a data structure for strings consisting of size
prefix for the character data (4 bytes), the character data as
wchars and a terminating zero wchar.

So your first approach was correct:

  string url =3D =E2=80=A6;
  BSTR* bstrUrl =3D enforce(SysAllocString(toUTFz!(const(wchar)*)(url)),
                          "Out of memory or url is null");
  myURL.bstrVal =3D bstrUrl;

  =E2=80=A6

  SysFreeString(bstrUrl);

--=20
Marco