C / C++ / MFC Discussion Boards

Closing CFrameWnd children Dialogs from Frame

Brian Nash24-Oct-02 5:21

24-Oct-02 5:21

I'm trying to implement a 'inactivity' feature in my MDI/SDI app. Since there are many different modal dialogs that could be up, I'm using windows hooks to set/reset a timer based on keyboard and mouse events. That's all working fine.

I'm having a problem killing off any dialogs (who might also have children dialogs) that might be up when the timer kicks off.

I'm doing all of this from within my CFrameWnd derived class, but can't simply post WM_CLOSE to the frame, since my frame class has a little 'signon' screen that it reverts to.

In my timer handler I've tried SendMessageToDescendants(WM_CLOSE), and I've tried finding children windows with GetWindow(GW_CHILD) and posting WM_CLOSE (even tried WM_DESTROY), but my child windows never seem to care. Actually they never even seem to get the message...

If I save off a CWnd* to the currently modal dialog, and then send a WM_CLOSE to that, it'll go away, but it's children hang out. I thought they would go away too. But I'd rather not have to save off that ptr (there are a lot of menu commands that bring up dialogs, dozens and dozens) if there is another way around it..

Anyone have any suggestions?

CEdit multiline

Mark Donkers24-Oct-02 4:55

Mark Donkers

24-Oct-02 4:55

Ok. I'm almost embarrassed to ask this one, but here goes...
I have a dialog box with a CEdit control on it. I'm using it as a logging window, but I can't get it to multiline my text. I'm using a CString member variable to contain the text that is written to it, but when I insert a '\n' or '\r' the CEdit control displays it as a control character inside of moving to the next line.

What properties need to be set? The ones that I have checked are:
- multiline
- horizontal scroll
- vertical scroll

Am I missing something? Thanks in advance.

Mark

Mark Donkers

A witty saying proves nothing.

-- Voltaire

Re: CEdit multiline

jmkhael24-Oct-02 5:02

jmkhael

24-Oct-02 5:02

use \r\n to pass a line

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: CEdit multiline

Mark Donkers24-Oct-02 5:15

Mark Donkers

24-Oct-02 5:15

Perfect. Thanks Papa.

MD

Mark Donkers

A witty saying proves nothing.

-- Voltaire

What is the easyest way to get HTTP response header?

George224-Oct-02 4:49

George2

24-Oct-02 4:49

Hi, everyone!

I want to get HTTP response header of my HTTP request.
I have seen some documents in MSDN, but I think it is
too hard to understand.

I just want to get all of the header and print it out.
Are there some sample codes?

Cheers,
George

Re: What is the easyest way to get HTTP response header?

Ravi Bhavnani24-Oct-02 5:08

Ravi Bhavnani

24-Oct-02 5:08

See this article[^].

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Re: What is the easyest way to get HTTP response header?

George224-Oct-02 20:39

George2

24-Oct-02 20:39

Thanks, Ravi pal!

I have seen the article you introduced to me.
It really helps a lot!

Cheers,
George

Re: What is the easyest way to get HTTP response header?

George225-Oct-02 0:25

George2

25-Oct-02 0:25

Thanks, Ravi pal!

I have a further question. I use the following codes to
get the header of Yahoo,

--------
CAmHttpSocket http;
TCHAR *ts = http.GetHeaders(_T("http://www.yahoo.com"));
CString str = ts;
AfxMessageBox(ts);
}
--------

in the message box, I can only get

--------
HTTP/1.1 200 OK
--------

I can not get other headers (Content-Length, and cookies etc).
Can you tell me how can I get all of the headers?

Have a nice weekend,
George

Re: What is the easyest way to get HTTP response header?

Ravi Bhavnani25-Oct-02 1:43

Ravi Bhavnani

25-Oct-02 1:43

The headers received depends on the webserver. Many webservers will only respond with a minimal subset and may also change headers (like the document's last-updated timestamp) to fool you. Frown | :(

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Re: What is the easyest way to get HTTP response header?

George225-Oct-02 17:23

George2

25-Oct-02 17:23

Thanks, Ravi pal!

I use "curl" command in Linux and can see all the headers, but
by using this tool, I can only see one of the headers.

I wondered whether I have miss-used the lib?

Can you check my code?

Cheers,
George

Re: What is the easyest way to get HTTP response header?

Todd Smith24-Oct-02 8:48

Todd Smith

24-Oct-02 8:48

What function are you using to send an HTTP request? Some of the IE technologies don't allow you to get the response header.

Todd Smith

Re: What is the easyest way to get HTTP response header?

George224-Oct-02 18:51

George2

24-Oct-02 18:51

Thanks, Todd pal!

I am not using any specific browser. I just want to use
some client technology to see whether my web server runs
properly.

Do you have some ideas?

Cheers,
George

Re: What is the easyest way to get HTTP response header?

Todd Smith25-Oct-02 6:47

Todd Smith

25-Oct-02 6:47

In that case here's the easiest way to get a response header

[www@staging2 apache]$ telnet www.codeproject.com 80
Trying 207.219.70.31...
Connected to www.codeproject.com (207.219.70.31).
Escape character is '^]'.
GET /index.html HTTP/1.1
host: test

HTTP/1.1 200 OK
Server: Microsoft-IIS/5.0
Date: Fri, 25 Oct 2002 16:46:38 GMT
Content-Length: 20307
Content-Type: text/html
Set-Cookie: LastVisit=10%2F25%2F2002+12%3A46%3A38+PM; expires=Wed, 23-Apr-2003 04:00:00 GMT; path=/
Set-Cookie: ASPSESSIONIDGQGGQZSK=LIPJNILADKDFHFMELBMDCJHE; path=/
Cache-control: private

Todd Smith

RichEdit Ctrl question.

JohnnyG24-Oct-02 4:49

JohnnyG

24-Oct-02 4:49

I found out how to display colored text in a rich edit control but am having a problem retaining the colored text when doing a ReplaceSel().

Is this normal? Is there a way around it? I mean is there another way of adding lines of text to a rich edit control without doing ReplaceSel?

I would like to keep adding text to this rich edit control and am using a method described here where you SetSel(0,-1), GetSelText(), then add my new text to it, and call ReplaceSel() to replace the entire contents of the rich edit control with the old and new text. But, if my old text was colored (only certain portions or certain lines are of different colors), the text is being overwritten to the default color - black text.

Crystal Reports

Ruca24-Oct-02 4:49

Ruca

24-Oct-02 4:49

Hi,
A quick question with regards the above:
Can one use Crystal Reports in Visual C++?
And if so how does one go about doing that?

Thanks
Regards

Rui

Re: Crystal Reports

Stephane Rodriguez.24-Oct-02 5:26

Stephane Rodriguez.

24-Oct-02 5:26

You've a C++ SDK[^].

How low can you go ?
(MS rant)

Re: Crystal Reports

Patje24-Oct-02 5:46

Patje

24-Oct-02 5:46

Yes you can do that.
Via COM it is possible to open reports, show them in a window (in a Crystal Reports Viewer ActiveX control), and perform all kinds of actions on it (print, mail, ...).
It is even possible to show the embeddable designer, and let you users design their own reports; within your application (although you need a separate license for this).
Normally the data for your report will come from a database (that's easy), but it's even possible to tell Crystal Reports that the data comes from within your application. However be careful, since CR 9.0 does not support the same functionality as CR 8.5. If you want to do this I suggest to go to CR 9.0 directly.

When you only want to show the report in your application, you don't have to pay any runtime royalty to CR (you can ship a free CR View-Only Runtime). However, if you want to create or modify reports from within your application, or let the user create or modify reports, you need a special RCAPI (Report Creation (or was it Component) API) license. This license is per named user, and costs about the same as a full Crystal Reports. This license and the Design-Time RunTime is mandatory ! simply installing Crystal Reports won't do the job.

Best way to get more information is to look at the crystal reports site, especially the developer zone (http://www.crystaldecisions.com/products/dev_zone[^]).

Enjoy life, this is not a rehearsal !!!

Re: Crystal Reports

Anonymous24-Oct-02 23:07

Anonymous

24-Oct-02 23:07

Hi Patje,
THank you very much for the information. May I ask you something else: The Crystal Reports that comes with Studio .Net, how does this fit in with what you are saying?
I notice that one can create a crystal report item for a C++ application, would this be the report that is called by the Crystal Reports Viewer ActiveX control?

Thanks
Regards

Re: Crystal Reports

Patje25-Oct-02 0:34

Patje

25-Oct-02 0:34

I don't know anything about the CR that comes with VS.Net, but I assume that it's a kind 8.5.Net version, not the brand new CR 9.0.

We are using the CR ActiveX control by using the "AtlAxWin" control (part of ATL 3.0) and passing it

"CrystalReport.EmbeddableCrystalReportsDesignerCtrl.8.5" for the embeddable designer
"CRViewer.CRViewer.8.0" for the ActiveX viewer

Then use ATL::AtlAxGetControl to get the IUnknown interface of the ActiveX control hosted in the AtlAxWin control.
ATL::AtlAxGetControl (NativeWin, &UnknownInterface);

Then use IUnknownInterface->QueryInterface to get the interface to the CRVIEWERLib::ICrystalReportViewer4Ptr.
hr = UnknownInterface->QueryInterface (__uuidof(CRVIEWERLib::ICrystalReportViewer4),(void **)&CrystalReportViewer);
or for the designer:
hr = UnknownInterface->QueryInterface (__uuidof(CRDESIGNERCTRLLib::ICRDesignerCtrl),(void **)&CrystalReportDesigner);

Then simply use
CrystalReportViewer->ReportSource = MyReport
to set the report in the viewer (similar for the designer).

Don't forget to import the necessary type libraries:

#import "CRAXDDRT.tlb"            // The Crystal Reports designer run-time<br />
#import "CRAXDRT.tlb"             // The Crystal Reports non-designer run-time<br />
#import "crviewer.tlb"            // The Crystal Reports viewer component<br />
#import "CRDesignerCtrl.tlb"      // The Crystal Reports designer module

Also take a look at the generated .tli and .tlh files (by the #import). They're also very interesting if you want to know some of the more technical details.

Hope this helps (this was one of my first C++/COM projects, a real C++/COM guru might write this maybe a bit more efficient).

Enjoy life, this is not a rehearsal !!!

Changing ComboBox Color

doctorpi24-Oct-02 4:35

doctorpi

24-Oct-02 4:35

Hi guys
How can I change the color of the EditBox part of a CComboBox?
I don't want to change the list color, only the edit box part.
Best regards
Jordi

Re: Changing ComboBox Color

alex.barylski24-Oct-02 13:14

alex.barylski

24-Oct-02 13:14

Probably wanna look into CWnd::OnCtlColor as one solution...and by far the easiest...

There is also Ownerdrawing as an option, but thats ALOT of work... Smile | :)

So look into the above first

"An expert is someone who has made all the mistakes in his or her field" - Niels Bohr

Recieving rate of exchange for securitypapers from the internet

tabor2524-Oct-02 4:31

tabor25

24-Oct-02 4:31

Hello,

i have to write an activex-control, that can recieve the rate of exchange for a securitypaper from a server in the internet. But at this time i have no idea how to access a server and how to recieve the information. Has anyone out there an idea or can give me a link to a description how to do this. Help would be very appreciated.

Best regards

tabor25

How to calculate how much height and width a string will take in pixels for any font.

Muhammad Kamran24-Oct-02 3:59

Muhammad Kamran

24-Oct-02 3:59

HI
How can i calculate that how much length and height of any text will take
with any font before displaying with Device Context.
thanks in anticipation for any hint or solutions.

bye.

Re: How to calculate how much height and width a string will take in pixels for any font.

User 665824-Oct-02 4:25

User 6658

24-Oct-02 4:25

You can use GetTextExtentPoint32 (API) or CDC::GetTextExtent (MFC) for that purpose.

regards

modified 12-Sep-18 21:01pm.

Setting the text size such that it fits with in a rectangle.

Muhammad Kamran24-Oct-02 3:53

Muhammad Kamran

24-Oct-02 3:53

i am to set the size of font such that specified text always comes with in
some specified rectangle. for this purpose i am using
CSize sz =pDC->GetOutputTextExtent(*txt);
it works . but problem is that it is very slow as there are many times font
is to be selected in pDC with a higher font size.
has any body done it in some other way or some hint.
All i want is to display text in a rectangle making the size of the
font such that text fits in the rectangle.
thanks in anticipation.

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