C / C++ / MFC

Focusless window - how to make that?

28-Feb-06 3:39

Can you tell us more about the circumstances you want to do that. A short code extract would help. Nobody wants to steal anything from you but everybody wants to learn. Therefore tell us more detailed what you want to do.

midix28-Feb-06 0:13

midix

28-Feb-06 0:13

MFC is so full of capabilities that I am a bit confused in the documentation and help files and cannot find the solution.
The problem:
I have a simple CDialog based app window with an ActiveX control in it. This ActiveX control has a feature that I do not need at all: it makes the dialog box jump in the foreground sometimes. Even if I hide the window (ShowWinow(SW_HIDE)), my app steals the input focus. It is normal behaviour for that ActiveX control and I do not want (and can't) modify the ActiveX control.
But I want to make my app "focusless" - that means if it receives some message to activate or jump foreground or capture keyboard and mouse focus, it should not respond. Have tried OnActivate, OnActivateApp, OnNcActivate, OnSetFocus, but these handlers are triggered AFTER the actual event and this does not work for me. I even agree to have this window to be invisible all the time (or maybe you know how to get ActiveX work without any window at all? , it just needs to be silent in the background until it does what it has to do and then exits.
Any ideas?
Thanks (at least for reading this)

Re: Focusless window - how to make that?

mbue28-Feb-06 0:22

Re: Focusless window - how to make that?

28-Feb-06 0:22

On WM_WINDOWPOSCHANGING examine the WINDOWPOS* pointer in the LPARAM and set the flags member always on SWP_NOZORDER.

case WM_WINDOWPOSCHANGED:<br />
case WM_WINDOWPOSCHANGING:<br />
{<br />
  WINDOWPOS* wp=(WINDOWPOS*)lParam;<br />
  wp->flags |= SWP_NOZORDER;<br />
}<br />
break;

midix28-Feb-06 3:35

midix

28-Feb-06 3:35

Thanks a lot!
I knew that the solution is simple just did not want to try out all of message handlers available; so your help eased my life a lot Smile | :)

-- modified at 11:42 Tuesday 28th February, 2006

Oops! That does not work. Seems that ActiveX control is stronger - I completely hide my window and try filter with SWP_NOACTIVATE but nothing.
Maybe if I tell that ActiveX control is WebBrowser that would give you some more ideas?
Thanks

Re: Focusless window - how to make that?

mbue28-Feb-06 13:27

28-Feb-06 13:27

No I have no other idea. You can try to disable the window to prevent it from getting focus (EnableWindow(hwnd,0);).

Gutmann Algorithm

rajeevktripathi27-Feb-06 23:41

rajeevktripathi

27-Feb-06 23:41

Hi All
I have to erase a file permanently by using Gutmann Algorithm,
I studied Gutmann algorithm and learned that it deletes a file after 35 passes, in which in first 4 and in the last 4 passes random values are written to buffer and in the rest 28 passes RLL & MFM technique is used to write the data in to the buffer.

Here I'm not getting RLL & MFM.
So Please explain these terms, and I will be grateful if provide some code snippets for the same.

Please help me
Thanks

Re: Gutmann Algorithm

Trollslayer28-Feb-06 22:54

Trollslayer

28-Feb-06 22:54

Run Length Limited and Modified Frequency Modulation - these are encoding techniques when writing data to the disk head, it's more to do with eletrcial issues than software issues.

The tigress is here Big Grin | :-D

Environment Variable

Anil_vvs27-Feb-06 23:41

Anil_vvs

27-Feb-06 23:41

Hi All,

Can anyone tell me how to change the value of an Environment variable programmatically? I have tried _putenv, _wputenv and SetEnvironmentVariable. All of them are returning success but the value is not changing.

Can anyone tell me where I am going wrong?

Thanks and Regards,
Anil

toxcct27-Feb-06 23:46

27-Feb-06 23:46

the environment variable are acutally changed, but within the process...
close the windows session to see the changes appear...

TOXCCT >>> GEII power
[toxcct][VisualCalc 2.24][3.0 soon...]

mbue28-Feb-06 0:08

28-Feb-06 0:08

The environment block for each process is a copy of the system environment. You can modify it for your own process. But you cannot change the environment for other applications.

toxcct28-Feb-06 0:10

28-Feb-06 0:10

will you repeat what i say for long ??? Dead | X|

TOXCCT >>> GEII power
[toxcct][VisualCalc 2.24][3.0 soon...]

Cedric Moonen28-Feb-06 0:39

Cedric Moonen

28-Feb-06 0:39

Maybe you should copyright your answers

toxcct28-Feb-06 0:42

28-Feb-06 0:42

that's not what i meant, but the guy has been answering twice on something i already answered...
was there a real need to spam the forum with answers that don't solve the problem more ?

TOXCCT >>> GEII power
[toxcct][VisualCalc 2.24][3.0 soon...]

Abebe28-Feb-06 2:34

Abebe

28-Feb-06 2:34

i have to admit that his answer was more clear, so i think it does not qualify as spam.

Er zit een korstje op mijn aars.

i want to close a dialogbox with a button on it ...

David Crow28-Feb-06 2:49

David Crow

28-Feb-06 2:49

toxcct wrote:
...the guy has been answering twice on something i already answered...

Is that necessarily a bad thing? Are you sure that he saw your post before making one of his own?

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Mahhouraaaaaa27-Feb-06 23:37

Mahhouraaaaaa

27-Feb-06 23:37

(:(hello! what's the code to close a window using a button on it ...
the situation :
A login frame ( mainFrame of my program ) that will call a new frame
if the login is correct. then i have to close ( or hide ) the parent frame :

void Cfrmlogin::OnButton1()
{
// TODO: Add your control notification handler code here
CTgesDlg mainFrame ;
mainFrame.DoModal();
}
Thank you for your help Smile | :)

.. me again :'(

Re: i want to close a dialogbox with a button on it ...

toxcct27-Feb-06 23:44

Re: i want to close a dialogbox with a button on it ...

27-Feb-06 23:44

if the frame is Modal, then it halts the execution of the function which called it, unless it is closed from inside it.

inside the frame, do this->EndDialog(0);

TOXCCT >>> GEII power
[toxcct][VisualCalc 2.24][3.0 soon...]

mbue28-Feb-06 0:06

Re: i want to close a dialogbox with a button on it ...

28-Feb-06 0:06

void Cfrmlogin::OnButton1() <br />
{<br />
    // TODO: Add your control notification handler code here<br />
    CTgesDlg mainFrame ;<br />
    ShowWindow(SW_HIDE);<br />
    mainFrame.DoModal();<br />
    EndDialog(0);<br />
}

thats all.

toxcct28-Feb-06 0:10

Re: i want to close a dialogbox with a button on it ...

28-Feb-06 0:10

no, this wont close the frame but the application...

TOXCCT >>> GEII power
[toxcct][VisualCalc 2.24][3.0 soon...]

David Crow28-Feb-06 2:51

David Crow

28-Feb-06 2:51

As has already been mentioned, EndDialog() is the answer, but I would suggest using some argument other than 0 (which normally indicates success) to indicate to the calling process why the application was terminated.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

link for download Dictionary API

baldha rakesh27-Feb-06 23:20

baldha rakesh

27-Feb-06 23:20

I am working on bayesian filter so i have to prepare a hash table of some words so for this i am mot able to identify how to identify words which are noun,adjective,prepositions etc..
for this if anybody have idea please share with me .
i have one idea that i have to call dictionary API and this api provide function which returns type of given words so also
i am not able to find where i have to download dictionary API so first of all i have to download Dictionary API if anybody can give me link where i can download this API.
please reply me ASAP.

Bankey Khandelwal
Software Engineer

Dictionary API

baldha rakesh27-Feb-06 23:18

baldha rakesh

27-Feb-06 23:18

Re: Dictionary API

toxcct27-Feb-06 23:32