Re: About Combobox - C / C++ / MFC Discussion Boards

ramanand_bulusu23-Aug-06 22:11

23-Aug-06 22:11

what is the diff between UDP&TCP proocals?how to create a UDP client network application?
which api i have to use?in VC++ plz give me the sugetions.

Re: networking

toxcct23-Aug-06 22:24

toxcct

23-Aug-06 22:24

tcp calls to a particuliar computer, when udp doesn't.

take this for example :

TCP : you call someone by the phone... you know its phone number, and you know who gonna answer

UDP : you talk to the crowd. no matter how many of them is listenning, you're just sending your "stream" of talks...

seeing the picture ?

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: networking [modified]

ramanand_bulusu23-Aug-06 22:36

ramanand_bulusu

23-Aug-06 22:36

toxcct wrote:
TCP : you call someone by the phone... you know its phone number, and you know who gonna answer

UDP : you talk to the crowd. no matter how many of them is listenning, you're just sending your "stream" of talks...

seeing the picture ?

plz tell me how to create a UDP application. Sniff | :^)

-- modified at 4:39 Thursday 24th August, 2006

Re: networking

toxcct23-Aug-06 22:38

toxcct

23-Aug-06 22:38

ramanand_bulusu wrote:
plz tell me how to create a UDP application

this is not the original question, and no, i can't. google is your friend (and codeproject also !). did you bother search them first ?

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: networking

_AnsHUMAN_ 23-Aug-06 22:26

_AnsHUMAN_

23-Aug-06 22:26

ramanand_bulusu wrote:
Re: networking

This is not the networking forum.

ramanand_bulusu wrote:
diff between UDP&TCP protocols

See here

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: networking

Hamid_RT24-Aug-06 0:09

Hamid_RT

24-Aug-06 0:09

See Difference between TCP and UDP [^] and here[^]

WhiteSky

About Combobox

vijay_aroli23-Aug-06 22:09

vijay_aroli

23-Aug-06 22:09

i am using a combobox and the current selection is displayed in its edit control. After clicking the dropdown button of the combo box, if the user does not select any of the items in the listbox of the combo box, then how to display the previously selected item in the edit control of the combo box.
Thanks...

vijay

Re: About Combobox

_AnsHUMAN_ 23-Aug-06 22:22

_AnsHUMAN_

23-Aug-06 22:22

You will have to store the index of the previously selected item in some variable. If the user does not select anything you can show the same item that was being displayed earlier using this index.

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: About Combobox

yummi23-Aug-06 22:26

yummi

23-Aug-06 22:26

Hi,
I think you need a member variable where you save yor last selection, initialising with CB_ERR (nothing selected) Wenn you clicking the dropdown button you ask if (getCurSel() == CB_ERR) if its TRUE you call SetCurSel(yourVar)

yummi

Re: About Combobox

vijay_aroli23-Aug-06 22:49

vijay_aroli

23-Aug-06 22:49

thanks... i am new to this and so finding it a bit hard.

vijay

Re: About Combobox

uday kiran janaswamy23-Aug-06 23:25

uday kiran janaswamy

23-Aug-06 23:25

hi,

If you doesnt select the ComboBox then the Index value is always -1

so

if(cmb.getCurSel()== -1) //Nothing but CB_ERR.
{
cmb.setCurSel(previous index value);
}

Think clever.

Uday kiran

Re: About Combobox

Hamid_RT24-Aug-06 0:10

Hamid_RT

24-Aug-06 0:10

You need to a variable for same previous state,do you have this variable?

WhiteSky

Re: About Combobox

David Crow24-Aug-06 3:00

David Crow

24-Aug-06 3:00

aroli vijay wrote:
After clicking the dropdown button of the combo box, if the user does not select any of the items in the listbox of the combo box, then how to display the previously selected item in the edit control of the combo box.

If nothing is selected (i.e., the mouse is clicked outside of the control), the selection does not change.

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

Re: About Combobox

vijay_aroli24-Aug-06 3:53

vijay_aroli

24-Aug-06 3:53

yes, thank you very much friends.. i got the problem solved quite a while ago... and thanks for ur response..

vijay

Open a MDI childframe without using the menue

yummi23-Aug-06 22:07

yummi

23-Aug-06 22:07

Hi,
I have a MDI application with one open childframe.
I want to open a new childframe automaticly. I call OpenDocumentFile(file) and the childframe opens, the correct data will be displayed. When I look on the Document template I can see that for every childframe it exist an doc. But when I want to use the document functions for saving for example then I use only the document of my childframe that exist before I used OpenDocumentFile().

Must I do something to bind the document template to the right childframe?

Thanks for help
yummi

Problem with SetClipboardData on Win98 [modified]

SachinBhave23-Aug-06 21:39

SachinBhave

23-Aug-06 21:39

I have code written as below :

CString csText;
HANDLE hData=NULL;

m_emailAddress.GetWindowText( csText );

if( (hData=GlobalAlloc( GMEM_MOVEABLE|GMEM_DDESHARE, (csText.GetLength()+1) )) )
{
LPVOID lpLockedMemory=NULL;
lpLockedMemory = GlobalLock( hData );

CopyMemory( lpLockedMemory, csText.GetBuffer(csText.GetLength()), csText.GetLength() );

if( SetClipboardData( CF_TEXT, lpLockedMemory ) == NULL )
{
AfxMessageBox( "Unable to set Clipboard data" );
GlobalUnlock( lpLockedMemory );
lpLockedMemory = NULL;
CloseClipboard();
return;
}
}

Now, this code works fine on Winxp, but for Win98 I get NULL as return value of SetClipboardData(). Can anyone help on this?

-- modified at 4:03 Thursday 24th August, 2006

Re: Problem with SetClipboardData on Win98

Anna-Jayne Metcalfe23-Aug-06 21:54

Anna-Jayne Metcalfe

23-Aug-06 21:54

Yes, but not in the Lounge. That's why there's a red "No Programming Quesions, Please" sign at the top of the page...

Post in the correct forum and you might just get some assistance with your problem.

Anna

Currently working mostly on: Visual Lint Cool | :cool:

Anna's Place | Tears and Laughter

"Be yourself - not what others think you should be"
- Marcia Graesch

"Anna's just a sexy-looking lesbian tart"
- A friend, trying to wind me up. It didn't work.

Re: Problem with SetClipboardData on Win98

Eytukan23-Aug-06 21:59

Eytukan

23-Aug-06 21:59

sachinbhave wrote:
this code works fine on Winxp

Then why not you stick to WinXp? Unsure | :~

<marquee scrollamount="1" scrolldelay="1" direction="up" height="10" step="1">--[ Jig | [Dance]

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[My Current Status]

Re: Problem with SetClipboardData on Win98

Christian Graus23-Aug-06 22:03

Christian Graus

23-Aug-06 22:03

I'm going to save you from yourself and move this to the right forum. In future, please don't ask programming questions in the lounge.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Rage23-Aug-06 23:34

Rage

23-Aug-06 23:34

Christian Graus wrote:
move this to the right forum

What work does this require ? I mean, I have no knowledge of databasis and SQL and so, but is this done easily or do you have to dig somewhere to find the thread and reput it in another table ?

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

Re: OT

Christian Graus24-Aug-06 0:05

Christian Graus

24-Aug-06 0:05

Well, the first step would be to work here Smile | :)

I made the comment because I thought I was going to be the first ( and only lounge ) reply, and I wanted the OP to know that they had posted in the wrong spot still.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: OT

Rage24-Aug-06 1:38

Rage

24-Aug-06 1:38

Christian Graus wrote:
would be to work here

It was not my intention to do it myself, only wanted to nkow how this works...

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

Re: OT

Christian Graus24-Aug-06 2:14

Christian Graus

24-Aug-06 2:14

Fair enough - well, as an employee, I get UI to do that, I don't need to be messing with any DB tables directly.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: Problem with SetClipboardData on Win98

prasad_som23-Aug-06 22:35

prasad_som

23-Aug-06 22:35

sachinbhave wrote:
but for Win98 I get NULL as return value of SetClipboardData().

No win98 system , to check this.
Can you use GetLastError to check what error its returning.

Prasad
Notifier using ATL

Re: Problem with SetClipboardData on Win98

Michael Dunn24-Aug-06 0:18

Michael Dunn

24-Aug-06 0:18

Your memory management is a bit off. Call GlobalUnlock() before SetClipboardData(). If SetClipboardData() succeeds, the clipboard owns the memory, so you're done. If it fails, you need to GlobalFree() the memory.

--Mike--
Visual C++ MVP Cool | :cool:

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