C / C++ / MFC

Michael Dunn21-Feb-02 8:10

Michael Dunn

21-Feb-02 8:10

Nish [BusterBoy] wrote:
I thought GetPrivateProfileString would automatically get converted to GetPrivateProfileStringW on Win2K.

No, using the Unicode APIs is a compile-time decision. If you used the ATL AppWizard, change the active config to one of the Unicode versions to link to the Unicode APIs.

As for the string literals, enclose them in the _T() macro. Using L"" means the code will only work in Unicode builds, whereas using _T() makes it work for ANSI as well.

--Mike--
Fetchez la vache!
My really out-of-date homepage
Sonork - 100.10414 AcidHelm
Big fan of Alyson Hannigan and Jamie Salé.

Nish Nishant21-Feb-02 9:32

Nish Nishant

21-Feb-02 9:32

Michael Dunn wrote:
No, using the Unicode APIs is a compile-time decision

Thanks. I thought it was kinda OS dependent.

Michael Dunn wrote:
As for the string literals, enclose them in the _T() macro. Using L"" means the code will only work in Unicode builds, whereas using _T() makes it work for ANSI as well.

I wish there was a compiler switch to automatically prefix _T to all string literals.

Nish

My most recent CP article :-

A newbie's elementary guide to spawning processes

www.busterboy.org

Anders Molin21-Feb-02 9:39

Anders Molin

21-Feb-02 9:39

And when you start to use _T() and TCHAR for all text, you should use the _tcs* functions, they work both with and without UNICODE and _UNICODE defined.

When not unicode the preprocessor converts _tcscpy() to strcpy(), and with unicode defined it converted to wcscpy().

And remenber, if you malloc a TCHAR do it like this:

TCHAR *s = (TCHAR*)malloc(wantedsize * sizeof(TCHAR));

Then it works both with and without unicode defined Wink | ;-)

- Anders

Money talks, but all mine ever says is "Goodbye!"

Remote Debugging of ISAPI Filter/Extension

Nish Nishant21-Feb-02 16:37

Nish Nishant

21-Feb-02 16:37

Thanks Anders...
The _tcs* tip was useful Smile | :)

Nish

My most recent CP article :-

A newbie's elementary guide to spawning processes

www.busterboy.org

21-Feb-02 3:57

I need to remotely debug an ISAPI filter. I have proven that I can remotely debug an EXE (between the two machines in question). I can also attach to a local process using Visual Studio and debug my local ISAPI filter. However, I can't seem to get Studio set up properly to attach to the inetinfo.exe on the remote machine.

Any thoughts?

Thanks in advance.

--G

Re: Remote Debugging of ISAPI Filter/Extension

Glenn E. Lanier II21-Feb-02 5:31

Glenn E. Lanier II

21-Feb-02 5:31

Never mind. According to Microsoft, this can't be done.

Drag'n drop

Jerome Conus21-Feb-02 3:39

Jerome Conus

21-Feb-02 3:39

Hi !

My App has an Explorer-like interface, with a leftview and a rightview. The leftview is a Tree control and the right view is a List control. I would like to enable the drag'n drop, to allow the user to drag items from the list (right view) and drop them into the tree (left view).

What I cannot figure out is how the tree (left view) will be notified of an item dropped on a tree-item ? I implemented the 'BeginDrag' in the right view, with the WM_MOUSEMOVE, and WM_LBUTTONUP, but when I drop an item on the left view, no messages is sent to the left view. I tried to use SetCapture() with my MainFrame window, but it's not working !

Any help of hint will be greatly appreciated !

Thanks !

Jerome

Re: Drag'n drop

Paul M Watt21-Feb-02 5:21

Paul M Watt

21-Feb-02 5:21

It has been a while since I have had to implement drag and drop for a control, but I believe that you need to register your tree control that will accept the dragged object as a drop target. This will let OLE know that it will look at the data a possibly accept it.

Then you will handle the function calls in the interface IDropTarget, there are functions like DragEnter, DragLeave and Drop.

Re: Drag'n drop

Shog⁹21-Feb-02 9:27

Shog⁹

21-Feb-02 9:27

When using MFC, you can create a member variable of type COleDropTarget and call Register() passing in your CWnd*. Then the virtual methods OnDragEnter(), OnDrop(), etc. will be called (if they are implemented).

farewell goodnight last one out turn out the lights

Smashing Pumpkins, Tales of a Scorched Earth

Re: Drag'n drop

Anders Molin21-Feb-02 9:43

Anders Molin

21-Feb-02 9:43

You have to send the message yourself, from the right view.

When you call setcapture from the right view, it's that view that get the drop message, then you can send a message to the windows undr the mouse, that you are dropping things in it...

- Anders

Money talks, but all mine ever says is "Goodbye!"

Accessing a view's members from another class

kostasdel21-Feb-02 3:07

kostasdel

21-Feb-02 3:07

Hi, I'd like to ask if anyone knows any good method to access a view's member functions or methods, from an outside class, in MFC Doc/View architecture, without using friend operators or methods, or with the scope resolution operator because that things does not work well on my project... (I'm trying to access from a TreeCtrl or TreeView potected code, some public functions and members from an other view and i got a compiler message "illegal call of non-static member functions").
What i ask is if there is a general way to override such member function calls or sth else to make this work. (The project i'm developing is an Image Viewer app which i will post in future, like ACD See or PolyView).
Sorry if these may sound funny for some experts, but although i program c/c++ 4 years i tried MFC the last months...Thanks. Smile | :)

Joaquín M López Muñoz21-Feb-02 3:10

Joaquín M López Muñoz

21-Feb-02 3:10

"illegal call of non-static member functions"

The message seems to imply that the problem has not to do with public/privateaccess, but rather with calling a non static member function as if it were static. Does this ring a bell for you, or am I totally off track?

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

kostasdel21-Feb-02 4:40

kostasdel

21-Feb-02 4:40

Thanks for replying... actually i tried to use these functions as static and as non-static but none of them seems to work properly (same compiler message), because there is a fact that no need is a static call on this view. I found an article by another reply to my message which might work. (accessing a view from anywhere).If it doesn't work i think a must override some accessor member function of the view but i wanted sth simple to solve such a thing.

Mazdak21-Feb-02 3:18

21-Feb-02 3:18

check this

Mazy

"So,so you think you can tell,
Heaven from Hell,
Blue skies from pain,...
How I wish,how I wish you were here."
Wish You Were Here-Pink Floyd-1975

kostasdel21-Feb-02 4:45

kostasdel

21-Feb-02 4:45

Thanks for your suggestion, and for the very nice Pink Floyd song...but in contrast i will say the TIME song from them... "...ten years have left behind you..." (to check all the codeproj articles i may need ten years and without solution maybe...) But OK,this article seems to be working. Smile | :)

Mazdak21-Feb-02 5:51

Trying to use IStream to pass data to an ATL Server

21-Feb-02 5:51

kostasdel wrote:
"...ten years have left behind you..." (to check all the codeproj articles

Laugh | :laugh:

You have to become old in CP to know all the places of it(thats persian expression,I don't know if you got it in English) Wink | ;)

Mazy

"So,so you think you can tell,
Heaven from Hell,
Blue skies from pain,...
How I wish,how I wish you were here."
Wish You Were Here-Pink Floyd-1975

Braulio Dez21-Feb-02 3:05

Re: Trying to use IStream to pass data to an ATL Server

21-Feb-02 3:05

Hi,

I want to pass a metafile to an ATL server, so I encapsulated it on a PictureBox object, and then saved it on one IStream, then I try to recover it in the ATL object, and it gives me on error, the code that I use is:

MFC client:

if(IPict) {
    IStorage *pIStg;
    Res = ::StgCreateDocfile(NULL, STGM_READWRITE | STGM_SHARE_EXCLUSIVE | STGM_CREATE, 0, &pIStg);
   if(pIStg) {
      IStream *TempStream = NULL;


      Res = pIStg->CreateStream(OLESTR("MyPicture"), STGM_READWRITE | STGM_SHARE_EXCLUSIVE | STGM_CREATE, 0,0, &TempStream);

      IPict->SaveAsFile(TempStream, TRUE, NULL);
      m_GDIGr.SetMetafile(TempStream);
   }
}

ATL Server:

STDMETHODIMP CGDIGraphics::SetMetafile(IStream *pStream)
{
   
   //PictureHolder PicHolder;
   //CComQIPtr<IPicture> Pict; // = PicHolder;

   IPicture *Pict = NULL;     
      
   HRESULT Res = ::OleLoadPicture(pStream, 0, FALSE, IID_IPicture,(void **) &Pict);

   
   if(Pict) {
      ::MessageBox(NULL, "PICT", "PICT", MB_OK);
   }

	return S_OK;
}

What I had made wrong ?, Thanks in advance, Bye !
Braulio

Mazdak21-Feb-02 3:33

Re: Trying to use IStream to pass data to an ATL Server

21-Feb-02 3:33

Hi Braulio Smile | :)

Braulio Díez wrote:
it gives me on error

You didn't mention what is that error Confused | :confused:

Anyway,Did Dr.Grimes reply you?If the answer is yes would you please tell the answer too?
Thanks

Mazy

"So,so you think you can tell,
Heaven from Hell,
Blue skies from pain,...
How I wish,how I wish you were here."
Wish You Were Here-Pink Floyd-1975

Braulio Dez21-Feb-02 3:49

Re: Trying to use IStream to pass data to an ATL Server

21-Feb-02 3:49

Hi,

Well the error message is quite dissapointing...

0x8000ffff E_UNEXPECTED

Dr. Grimes didn´t answer me, but well, I keep on researching, and it seems that you have to encapsulate the metafile in a PictureBox control ( IPicture), and the destination is not in the same DLL so I need to save the object in one stream ( I use for that IStream), and then in the ATL server I take that string and try to load the pic...

But... I when I´m going to read from the stream it doesn´t... Dead | X|

I know this is a quite common issue, just to pass a metafile from one process to another using COM, it´s one of the basic thing from COM, the sad thing is that anybody that knows the answer wants to give a hint.... Frown | :-(

Thanks for you interest mazdak, Bye !
Braulio

Mazdak21-Feb-02 4:22

Re: Trying to use IStream to pass data to an ATL Server

21-Feb-02 4:22

Hi:
Sorry,my ATL knowledge is not enough to help you. Frown | :(

It's very dissapointing that although there are lots of expert in CP but it seems
non of them (or few of them) have good ATL knowledge. Frown | :(

There are about 30000 members in this site... Dead | X|

Good luck and Bye

Mazy

"So,so you think you can tell,
Heaven from Hell,
Blue skies from pain,...
How I wish,how I wish you were here."
Wish You Were Here-Pink Floyd-1975

Braulio Dez21-Feb-02 7:25

Re: Trying to use IStream to pass data to an ATL Server

21-Feb-02 7:25

Hi Mazdak !

Finally I got the solution, Joao Vaz give me one URL to a nice article, and now it is working nice !!! ( there were some magic with the streams XDDD ).

I have to tidy up all the code and make a submission to codeproject. Bye !
Braulio

Braulio Dez13-Mar-02 2:41

Re: Trying to use IStream to pass data to an ATL Server

13-Mar-02 2:41

Hola !

As I promised you I Wrote the article about Streams and Pictures and ActiveX, you can check it out in:

http://www.codeproject.com/useritems/PictureTransfer.asp

The bad thing... something went wrong with the submission wizard and the Picture and the zip with the source is not there ( I sent one e-mail to chris with the files, let´s hope he fixes it).

Bye !
Braulio

Joao Vaz21-Feb-02 4:38

Joao Vaz

21-Feb-02 4:38

Braulio, just one thought , you tried to create the stream on global memory
with the CreateStreamOnHGlobal and get the global handle from the server with
GetHGlobalFromStream , this without using Stg ?

Joao Vaz

Re: Trying to use IStream to pass data to an ATL Server

Braulio Dez21-Feb-02 5:26