C / C++ / MFC

Re: Be notified of the input focus

De Nardis Andrea24-Aug-04 6:13

De Nardis Andrea

24-Aug-04 6:13

Hi David,
unfortunately it does not work.
My dialog is a window inside a frame in a SDI application. I checked w/ Spy++ and it does not receive any WM_ACTIVATE msg.
Have u got any idea?
Sorry if I am annoying u w/ silly question.
Thanx a lot.
Bye,
Andrea Smile | :)

Thank you Mr Maximilien But.....

bunty2k424-Aug-04 5:26

bunty2k4

24-Aug-04 5:26

But how do i assign some uneditable text to a rich text control which will change to some other text when clicking on the diferent Sub-Tree Controls.Can you please give me some code as i am not habituated to MFC. D'Oh! | :doh:

Re: Thank you Mr Maximilien But.....

David Crow24-Aug-04 5:57

David Crow

24-Aug-04 5:57

bunty2k4 wrote:
But how do i assign some uneditable text to a rich text control...

How text is added to a control has nothing to do with whether it is editable or not. Use SetWindowText(), Paste(), and ReplaceSel() to put text into the control.

To make the control uneditable, use the SetReadOnly(TRUE) or EnableWindow(FALSE) methods.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

placing pieces on game board

Choane Kgotso24-Aug-04 4:57

Choane Kgotso

24-Aug-04 4:57

I am trying to develop a morabaraba game in c++ Builder and i have completed the board but my problem is placing the pieces.please help me out.

Let freedom reign

controlling HTML web page in Visual C++ 6.0

Freeman Taylor24-Aug-04 4:15

Freeman Taylor

24-Aug-04 4:15

I am programming some "wrapper' software in Visual C++ 6.0 to control some 3rd party software that is written in HTML and has java script within the code. The HTML has buttons for making certain selections in the HTML file. I would like to programmatically make partial button selections and force the onclick to happen. I would appreciate any help I can get.

Freeman Taylor

Re: controlling HTML web page in Visual C++ 6.0

Jeff Bogan24-Aug-04 5:50

Jeff Bogan

24-Aug-04 5:50

I don't think it's possible to wrap C++ compiled code around html/javascript. You can interface but not wrap.

Re: controlling HTML web page in Visual C++ 6.0

Freeman Taylor24-Aug-04 6:35

Freeman Taylor

24-Aug-04 6:35

I guess wrap is not the term I should have used. Interface is what I am doing. I have successfully interfaced with the HTML file. Now I need to be able to control the buttons within the HTML file and that is what I have not been successful in doing. Any help would be appreciated.

Freeman Taylor

Re: controlling HTML web page in Visual C++ 6.0

Neville Franks24-Aug-04 10:45

Neville Franks

24-Aug-04 10:45

I you are using a class derived from CHtmlView you can do most anything you want with the html and with the Javascript including calling C++ code from JS and vice-versa.

To call a JS function you can use: execScript()

This is a snippet from my Surfulater app code:

MSHTML::IHTMLDocument2Ptr pDoc( GetHtmlDocument() );
if ( pDoc != NULL )
{   // Call our JS code to end Edit mode. Calls JS EndEditing()
    _variant_t vtRet;
    _bstr_t bstrFunc = _T("EndEditing()");
    vtRet = pDoc->GetparentWindow()->execScript( bstrFunc, L"JScript" );
}

See: http://www.codeproject.com/com/jscalls.asp#xx229574xx[^]

There is a lot of good documentation and sample code around on this subject. Yell out if you need more pointers.

Neville Franks, Author of ED for Windows www.getsoft.com and coming soon: Surfulater www.surfulater.com

Persistant GetOpenFileName

Patrick REY24-Aug-04 3:57

Patrick REY

24-Aug-04 3:57

If I let the user open a file through GetOpenFileName, how to have the customizations done on that dialog box stay from one open to another ?
If the user switches to the detailed view and selects new columns (choose details), how to have to columns back the next time he wants to open a file ?

Visual Studio.Net File, Open, File function does this WTF | :WTF:

!
... but my app does not Frown | :(

Help, please !

Interprocess communication or something like that

olliman24-Aug-04 3:15

olliman

24-Aug-04 3:15

Hi everyone,

I am writing an application that can replace a keypress with another one, e.g. if I press the 'm' key on the keyboard, my application detects it and replaces it with 'x' for example.

This is achieved by setting a low level keyboard hook.

Up to now, the replacement map is hard-coded into the hook dll, but I want to configure it on the fly with a program in the TNA.

My question:
Is there a standard way of communication between my hook dll and the config program (i'm planning a callback function that is called everytime a key is pressed. it returns the replacement key) or do I have to think of my own with perhaps ReadProcessMemory, a MMF or something like that??

thx in advance,
Oliver

TCP/IP Socket KeepAlive Feature Question.

jerry1211a24-Aug-04 3:05

jerry1211a

24-Aug-04 3:05

I am setting a socket option to use the KeepAlive feature...using setsocketopt(). If there is an error or break in the network connetion an error code is generated...but this can take minutes. I need an indication in seconds that there is a problem. Is there a way to do this??

Thanks,
Jerry

Re: TCP/IP Socket KeepAlive Feature Question.

Henry miller24-Aug-04 3:20

Henry miller

24-Aug-04 3:20

Last I checked the RFC (10 years ago) the timeout was 2 hours! If you need less you need to impliment that yourself. Basicly you need to ping the other end every second, and check for errors. However TCP does in order delivery, so if one packet is lost but the connection is otherwise good (this is a normal situation!) it can take more than one second for the retry.

You can get around this with UDP. In fact it might be better to use UDP for your keep alive because then you know which packets are lost, and when things are arriving out of order.

Help Please

bunty2k424-Aug-04 2:54

bunty2k4

24-Aug-04 2:54

Hello, i am bunty, i needed some help, i want to learn more about c++ , i am currently studying it but i am failing to get it in my heads.I immediately need a program built in which:-
1)There will be a built in User Id and password for the startup of the program.It has to be password protected to ward off prying eyes.
2)it will have a treeControl on the leftside pane on clicking different sub-tree items on the left pane there will be a display window which will show different pre-built in written stuff which is un-editable. D'Oh! | :doh:

I need it written in VC++.Please answer me through this column.Please help me someone. D'Oh! | :doh:

Re: Help Please

Maximilien24-Aug-04 4:58

Maximilien

24-Aug-04 4:58

I will answer specifics ...

1- when doing this, in the resource editor, change the Password property for the editbox to make it display * instead of the actual letters.

2- You want something like this http://www.codeproject.com/property/TreePropSheetEx.asp ?

Maximilien Lincourt
Your Head A Splode - Strong Bad

Help Please

bunty2k424-Aug-04 2:54

bunty2k4

24-Aug-04 2:54

fread crash

ns24-Aug-04 1:55

24-Aug-04 1:55

I am doing

char* junk;
stat = fread((void*)junk, sizeof(char),64880,  inFile);

and it crashes. The file is much larger than 64880. What could I be doing wrong? Its binary data.

If I do:

stat = fread ((void *) &pingMarker, 1, sizeof (unsigned int), inFile);

it doesnt crash. I was just wanting to skip past a bunch of data and see what lies at the 64881th byte
thanks,
sb

Re: fread crash

Cedric Moonen24-Aug-04 2:49

Cedric Moonen

24-Aug-04 2:49

ns wrote:
char* junk;
stat = fread((void*)junk, sizeof(char),64880, inFile);

junk is a pointer that has not been initialized (so it points to an invalid adress). When you call fread with this pointer, it will try to write something at this invalid adress and will crash.

Try this instead:

char* junk = new char[64881];<br />
stat = fread((void*)junk, sizeof(char),64880,  inFile);<br />
//<br />
//<br />
//<br />
delete[] junk;

char junk[64881];<br />
stat = fread((void*)junk, sizeof(char),64880,  inFile);<br />

Re: fread crash

ns24-Aug-04 2:54

24-Aug-04 2:54

Thanks.
That worked.
sb

Re: fread crash

Cedric Moonen24-Aug-04 2:50

Cedric Moonen

24-Aug-04 2:50

ns wrote:
I was just wanting to skip past a bunch of data and see what lies at the 64881th byte

Yes, a better solution is to use fseek. Take a look at the msdn for more info.

log method-call and time on PocketPc

pat27088124-Aug-04 1:46

pat270881

24-Aug-04 1:46

Hello,

I have already communicate with a lot of experts and read a lot about my
problem which is as follows: I want to develop a generic program for a
PocketPC, which logs the method-call and the time when any button or anything
else is executed, respectively a method is executed, in a file on the Pocket
PC. I need this for Usability studies. Every experts told me that i can reach
this only with embedded c++ or c code. I wrote my previous programs always with
c#.
So i want to ask in this forum if somebody can help me to solve my problem?
- this would be very important for me, because i need it for my diploma
(thesis).

thanks in advance.

Regards.

Patrick

Class View in VS 7

CreepingFeature24-Aug-04 1:37

CreepingFeature

24-Aug-04 1:37

In VS, there is a window that shows solutions, classes etc. D'Oh! | :doh:

If in class view you can see all components of that class. If the class contains enums etc. you can see all of the components by name in their respective groups.

Say:

Enums<br />
----balahBlah<br />
------bl<br />
------bla<br />
------blah

(Dont mind the ----)

The elements of enums etc. are listed by name but in case of enums the named values are actualy type int.

Q: Is there a way to force VS to organize the elements by value?

(VS only organizes by name, access, and group!)

Eg. If say blah = 0; it should be first in the list and if bla = 2; it should be last.

Thanks in advance!

Re: Class View in VS 7

Antony M Kancidrowski24-Aug-04 1:49

Antony M Kancidrowski

24-Aug-04 1:49

Sorry, I have not been able to find such!

If you really want the enum items in order you could write

enum { blah = 0 };
enum { bl = 1 };
enum { bla = 2 };

and they will appear in that order in the class view. Though this seems a bit overkill for me!

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Cstring to char??

Larsson24-Aug-04 1:33

Larsson

24-Aug-04 1:33

How can I make a CString to a char?
I don't now how big the CString is so how can I do it?

Please help me.

Re: Cstring to char??

Cedric Moonen24-Aug-04 1:40

Cedric Moonen

24-Aug-04 1:40

CString YourString = "Blahblah";<br />
char* szString = new char[YourString.GetLength()+1];<br />
strcpy(szString,YourString.GetBuffer(YourString.GetLength()) );<br />
//<br />
//<br />
//<br />
//Don't forget to delete the string after use:<br />
delete[] szString;

Hope this helps

Re: Cstring to char??

Larsson24-Aug-04 2:18

Larsson

24-Aug-04 2:18

Thanks that works fine,
You are a life saver..

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