Making CEdit behave properly in a CWnd - C / C++ / MFC Discussion Boards

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Re: VC++2003: Question about "Pointers to member functions".

Maxwell Chen25-Jul-05 19:01

Maxwell Chen

25-Jul-05 19:01

Hello,

My original intention was to hide / to prevent from passing the whole CMyLoopbackDlg interface (either in poiter or in reference form) into the thread callback. I just hoped that the member structure could carry some functions of CMyLoopbackDlg to the thread callback as well as the handles to events, (... since that single object of CMyLoopback is there, and the data mamber m_InfoTest is public. And I don't want static member function stuffs...)

AfxBeginThread(TestThreadProc, &m_InfoTest);

The solution (InvokeDelegate) still requires the exposure of CMyLoopbackDlg. This would be far from my intention. Unsure | :~

Maxwell Chen

Re: VC++2003: Question about "Pointers to member functions".

Bob Stanneveld25-Jul-05 21:01

Bob Stanneveld

25-Jul-05 21:01

Hello,

There is a solution for your problem, but I think that it is a little bit cumbersome. (Actually there are many solutions to the problem, but all have their pro's and con's.)

One solution:
You create another worker thread, that has access to your dialog and everything else. That worker thread waits for one or multiple events. You other thread sets one of those events and your extra "observer" thread takes appropriate actions.

Other solution:
You demote the functionality that your thread needs to a special base class. You can also create a pure interface for this (only abstract methods). Pass a pointer or reference to this interface and your problem is solved.

Example:

class YourBasicInterface
{
public:
    virtual void SetYourEvent1() = 0;
    virtual void SetYourEvent2() { ::SetEvent(hYourEvent2); }

private:
    HANDLE hYourEvent2;
};

class YourDialogClass : public CDialog, public YourBasicInterface
{
    // ...
};

Hope this helps Smile | :)

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... is the police. - Conspiracy brother

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Re: VC++2003: Question about "Pointers to member functions".

Maxwell Chen26-Jul-05 18:14

Maxwell Chen

26-Jul-05 18:14

Hello,

The solution 2 (class YourBasicInterface) is interesting. I will consider this. Thanks!! Blush | :O

Maxwell Chen

TA_TOP

Anonymous21-Jul-05 23:48

Anonymous

21-Jul-05 23:48

Can som1 explain me the method of how TA_TOP is calculated . ?Have any1 any idea abt it ...

Regards

Re: TA_TOP

Aamir Butt22-Jul-05 0:46

Aamir Butt

22-Jul-05 0:46

Anonymous wrote:
Have any1 any idea abt it ...

I have no idea what you are talking about. Be a bit more elaborative.

Steve Mayfield: "Coding in VB is like riding a tricycle...once you figured out how to peddle, its really hard to fall off."

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Re: TA_TOP

Anonymous22-Jul-05 0:51

Anonymous

22-Jul-05 0:51

Okay ... and Sorry ... thing is that I want to replicate wat I have drawn onmy Window with the help CDC Funcs in another lang. I am following the same source code. Now at point I am stuck becoz in the code there is a statement ....
pDC->SetTextAlign(TA_TOP);
How Do I calculate it ... What is exactly the bounded rectangle ... how i get its specs ???

Regards

Re: TA_TOP

Aamir Butt22-Jul-05 1:00

Aamir Butt

22-Jul-05 1:00

Looks like you want to get the dimensions of text or its bounding rectangle according to the selected DC. You can use CDC::GetTextExtent function for this.

If you are confused about TA_TOP value, check it Here[^]

Steve Mayfield: "Coding in VB is like riding a tricycle...once you figured out how to peddle, its really hard to fall off."

My Articles

Making CEdit behave properly in a CWnd

panzerdivisionmarkus21-Jul-05 23:04

panzerdivisionmarkus

21-Jul-05 23:04

Hi,
The subject may be a little off, but anyways...
I wonder how I can make a CEdit behave "properly" in a CWnd. I want it to behave the way it does in a CDialog.
When I place a CEdit in my CWnd, I can't use delete on it, I can't use tab to jump between ctrls and I can't select the text in a CEdit(yes, I've tried using setsel(0,-1)).

So I wonder if anyone please can help make my CEdits behave like in a CDialog.

Regards
Markus

Re: Making CEdit behave properly in a CWnd

basementman22-Jul-05 4:32

basementman

22-Jul-05 4:32

You need to implement the IsDialogMessage function in a PreTranslateMessage handler. See IsDialogMessage in the docs for more information.

onwards and upwards...

Re: Making CEdit behave properly in a CWnd

panzerdivisionmarkus24-Jul-05 20:17

panzerdivisionmarkus

24-Jul-05 20:17

If I understood you right, I'm supposed to override the PreTranslateMessage handler in my CWnd, and call the IsDialogMessage from there, like this:

BOOL CMyWnd::PreTranslateMessage( msg )
{
if( IsDialogMessage( msg ) )
return TRUE;
else
return CWnd::PreTranslateMessage( msg );
}

Sadly it didn't work, I still can't use delete or tab in my CEdit. And the messages doesn't come to the function, at least not what I can see.
Did I misunderstood you, or have I done something wrong?

CFileDialog retrieve view mode

Nooklaer21-Jul-05 22:59

Nooklaer

21-Jul-05 22:59

How can i find out what the current view mode (details, thumbnails, etc.) of a CFileDialog is?

I want to save the current mode so when i re-open the dialog i can open it using the same mode. I do know how to open a CFileDialog in a specific view mode but i don't know how to ask the dialog what its current view mode is.

Any help would be greatly appreciated.

Thomas

2 questions

gohappy_199921-Jul-05 22:10

gohappy_1999

21-Jul-05 22:10

1.what is top-level window?
2.how to enumerates all top-level windows?

I love you not for whom you are, but who i am when I'm by your side

Re: 2 questions

Nilesh K.21-Jul-05 23:43

Nilesh K.

21-Jul-05 23:43

gohappy_1999 wrote:
1.what is top-level window?

A top-level window is any window that is not a child window. Top-level windows do not have the WS_CHILD style.

gohappy_1999 wrote:
2.how to enumerates all top-level windows?

You can do that by using EnumWindows API

<bold>- Nilesh
<italics>"Reading made Don Quixote a gentleman. Believing what he read made him mad" -George Bernard Shaw

Re: 2 questions

gohappy_199924-Jul-05 17:47

gohappy_1999

24-Jul-05 17:47

Thank you very much！

I love you not for whom you are, but who i am when I'm by your side

How can I make a PERFECT RE-USABLE SOCKET ?

NOVICE0021-Jul-05 21:36

NOVICE00

21-Jul-05 21:36

I have some problems to make a network component.

It is a "TIME_WAIT" state on client socket.

When the socket is in "TIME_WAIT" state, it cannot connect into any remote server.

How can I avoid "TIME_WAIT" state?

Or, is there any function that can check a socket in "TIME_WAIT" or not ?

I disconnect all sessions using "DisconnectEx" function for re-using socket.

And, all sockets are pre-binded.

There are no problem when I disconnect client from server.

But, client disconnects itself and then socket falls in "TIME_WAIT" state.

I tryed to remove that state, but I can't. (failed..all)

I applied handshaking routine, LINGER option and changing into blocking mode..

As you know, TIME_WAIT state's duration is so~~~~ long!!

So, I want to know, how to check it or avoid it. ( TIME_WAIT state )

NOVICE FOREVER!!!

JPEG ...

Lachezar21-Jul-05 21:33

Lachezar

21-Jul-05 21:33

I need information ( mathematical basics ) about JPEG and JPEG2000 file formats . How can I convert BMP file to JPEG one . I have the all information I need about BMP . But I can't find info about JPEG . Could You recommend me some articles in Internet , devoted to JPEG construction .

Re: JPEG ...

Ted Ferenc21-Jul-05 21:42

Ted Ferenc

21-Jul-05 21:42

A good starting point is http://www.wotsit.org/

"An education isn't how much you have committed to memory, or even how much you know. It's being able to differentiate between what you do know and what you don't." - Anatole France

Re: JPEG ...

C^hris L^osinger22-Jul-05 6:38

C^hris L^osinger

22-Jul-05 6:38

you could try http://www.smalleranimals.com/jpegfile.htm
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users

sunit521-Jul-05 21:28

sunit5

21-Jul-05 21:28

i m using NetUserAdd()keeping level as 1 ie USER_INFO_1.in this structure i have to keep usri1_priv as USER_PRIV_USER.it has added the user.with the specified user name and password i can log in my comp.but when i m checking its " member of" (in the manage)it is showing me nothing.why

Re: users

sunit521-Jul-05 23:08

sunit5

21-Jul-05 23:08

i got the answer

Re: users

David Crow22-Jul-05 4:38

David Crow

22-Jul-05 4:38

Well how about sharing it with the rest of the community?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: users