Re: Should be simple CEdit - C / C++ / MFC Discussion Boards

Member 180081715-Apr-05 2:55

15-Apr-05 2:55

i have some problem in designing the multithreaded tcp server using CAsyncSocket class.the problem is my server can accept only one connection at a time,even though i have used AfxBeginThread logic.so how can i make my server to aceept multiple clients.please help me.i dont want console program.i am using MFC.

Re: multithreaded tcp server

Alexander ^M.,15-Apr-05 3:35

Alexander ^M.,

15-Apr-05 3:35

You don't need a multithreaded app to handle multiple connections!
CAsyncSocket has overrideable notification functions, e.g. OnAccept, which informs the app about an incoming connection.
The whole notification works via windows messages (WSAAsyncSelect), so you only need one single thread for the message loop (which is done by MFC) and you will be able to handle many connections.
Using multithreading just makes sense when the CAsyncSocket::OnReceive has to do operations that take much time because it would block the message loop.

Don't try it, just do it! Wink | ;-)

Should be simple CEdit

Punk Legend15-Apr-05 1:14

Punk Legend

15-Apr-05 1:14

I Have been doing things similar to this for ages but all of a sudden it doesn't seem to work.

I am testing the contents of a CEdit control on the EN_CHANGE message and then ebabling/disabling the OK button depending on the result. the only trouble is that the EN_CHANGE message seems to trigger before the InitDialog routine and therefore doesn't recognize and of the controls i have set up in the InitDialog.

What am I doing, or what can i do?

Re: Should be simple CEdit

toxcct15-Apr-05 1:40

toxcct

15-Apr-05 1:40

could you give us a piece of code about what you are doing ?
i.e, how you declare your CEdit, how you initializes it (in the constructor on OnInitDialog() ), how you use it then...

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: (Modified)Should be simple CEdit

namaskaaram15-Apr-05 2:50

namaskaaram

15-Apr-05 2:50

(aaah.....i didnt quite follow ur question(i am assuming that u need to verfiy the string entered before enabling a button!!!!!).....
the EN_CHANGE message is called whenever there is a change in the Edit control.....but i beleive u want the final data.....but the en_change only tellz u only when there is a change in the data....and gives u no clue if the data entered is over!!!!!(as u dont have a button that updatez the dadta in the edit control).....so herez what u can do(assuming that u press enter key once u have made the changez in the Edit control.....override the function PreTranslateMessage().....

BOOL CXyzDlg::PreTranslateMessage(MSG* pMsg) 
{
	// TODO: Add your specialized code here and/or call the base class

	if(pMsg->message==WM_KEYDOWN)
    {
        if(pMsg->wParam==VK_RETURN)
            pMsg->wParam=VK_TAB;
    }	


	return CDialog::PreTranslateMessage(pMsg);
}

so what we have done here is that,we have made the edit control to loose focus when the enter key is pressed(actually the tab key does that,but we have changed it using the above code)(u can give any key u ant to i just stuck with the enter key).....
now add thiz code to the messahe that is passed when the control is lost ( EN_KILLFOCUS).....

void CXyzDlg::OnKillfocusEdit0() 
{
	// TODO: Add your control notification handler code here

UpdateData(TRUE);//add thiz to update the data!!!!!check here if ur string is the reqiured one!and do the necessary!	

}

by doing thiz we get the final output on th edit control .....hope thiz helpz.....

cheerz..... Big Grin | :-D

"faith, hope, love remain, these three.....; but the greatest of these is love" -1 Corinthians 13:13

Re: Should be simple CEdit

David Crow15-Apr-05 3:48

David Crow

15-Apr-05 3:48

When you call SetWindowText() from within OnInitDialog(), an EN_CHANGE notification will eventually get generated. What you simply need to do is differentiate between the control's contents changing during initialization vs. the user changing it. The simplest way is to add a m_bInitialized variable to the dialog. Set the variable to false in the dialog's constructor, and then set it to true at the very end of OnInitDialog(). Now in each of the EN_CHANGE handlers, only alter the OK button if m_bInitialized is true. Make sense?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: Should be simple CEdit

Ravi Bhavnani15-Apr-05 4:10

Ravi Bhavnani

15-Apr-05 4:10

DavidCrow wrote:
When you call SetWindowText() from within OnInitDialog(), an EN_CHANGE notification will eventually get generated.

I thought EN_CHANGE notifications are only sent in response to a user (vs. programmatic) action that changes the contents of an edit control.

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

Re: Should be simple CEdit

David Crow15-Apr-05 5:26

David Crow

15-Apr-05 5:26

Ravi Bhavnani wrote:
I thought EN_CHANGE notifications are only sent in response to a user (vs. programmatic) action that changes the contents of an edit control.

But now you know otherwise. Smile | :)

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

How to load picture to FlexGrid cell in MFC?

jahfer14-Apr-05 23:51

jahfer

14-Apr-05 23:51

Hello,

I am working with MS FlexGrid and VC++ 6.0(MFC). I need to load a picture(bmp) to the cell of the flexgrid.

How can I do this?

TIA,

Regards,
Jahfer V P

Re: How to load picture to FlexGrid cell in MFC?

22491715-Apr-05 0:42

224917

15-Apr-05 0:42

Use CMSFlexGrid::SetRefCellPicture(). A sample here[^]

suhredayan
There is no spoon.

Re: How to load picture to FlexGrid cell in MFC?

jahfer15-Apr-05 1:42

jahfer

15-Apr-05 1:42

Dear Suhredayan,

Thank You for your great help.

The sample you pointed out helped me to reach the destination.

Here is the way that I implemented it. It is very simple.

/******************************/
CPictureHolder picHdr;
picHdr.CreateFromBitmap(IDB_BITMAP1);
m_FlexGrid.SetCol(2);
m_FlexGrid.SetRow(1);
m_FlexGrid.SetRefCellPicture(picHdr.GetPictureDispatch());
/******************************/

Thanks & Regards,
Jahfer V P

Re: How to load picture to FlexGrid cell in MFC?

22491715-Apr-05 1:45

224917

15-Apr-05 1:45

any time

suhredayan
There is no spoon.

Get line index of cursor in CRichEditCtrl

Juanpast14-Apr-05 23:43

Juanpast

14-Apr-05 23:43

Thats all, i need to get the line index where the cursor is placed in a CRchEditCtrl.

Thanks

Re: Get line index of cursor in CRichEditCtrl

22491715-Apr-05 0:00

224917

15-Apr-05 0:00

check for EM_EXLINEFROMCHAR message in msdn.

suhredayan
There is no spoon.

WM_MBUTTONDBLCLK please help me

Member 68936114-Apr-05 23:08

Member 689361

14-Apr-05 23:08

hi all
i used API function hWndApp=FindWindowEx(0,0,"Notepad",0),and then i want to send WM_MBUTTONDBLCLK message to hWndApp but it didn't work as i think...

i send WM_MBUTTONDBLCLK message to hWndApp,and then send WM_COPY message to hWndApp so that i want to copy word what is highlighted (when call WM_MBUTTONDBLCLK message) to Clipboard (so call WM_COPY message)>>>but i didn't know how to code correctly///

please help me...
thanks...

Here we go!!!

Re: WM_MBUTTONDBLCLK please help me

22491715-Apr-05 0:01

224917

15-Apr-05 0:01

Hope this article gives you some clue on how to go ahead http://www.codeproject.com/win32/manipwindows.asp

suhredayan
There is no spoon.

Re: WM_MBUTTONDBLCLK please help me

Member 68936115-Apr-05 8:45

Member 689361

15-Apr-05 8:45

i have read your code>>>that's very useful>>>and thank you so much
but 1 more question for you///please

after enumming all childwindows of mainwindows that can get HWND easily>>>but how to get HWND of edit childwindows that always are used in a typing program.Because we really don't know contents of edit childwindows if we use GetWindowText() in EnumChildProc() function to get HWND hic hic///

D'Oh! | :doh:

i really understand all that you code...
thanks...waiting for you hic hic

Here we go!!!

Problem with CListCtrl

Neeranjan14-Apr-05 22:52

Neeranjan

14-Apr-05 22:52

Hi,

I have an application (in VC++ 6.0) wherein it displays the images in ListView. So the application starts displaying the images from the Top left corner (0,0).
Now I have added the manifest file (to give XP look to application) in applicatoin resource successfully. (as outlined in the below mentioned link http://www.codeguru.com/Cpp/controls/controls/article.php/c5227/[^])
The application is having the XP look but the images are displayed from the Bottom left corner.

Question:How to set the origin of the ListCtrl to top left corner (0,0) so that the images are displayed from the top left corner (0,0) ?

Thanks & Regards,
Neeraj

Cant use Ctrl+C like commands with CFormView

ugur_basak14-Apr-05 21:54

ugur_basak

14-Apr-05 21:54

Why can't i use Ctrl+C,V like commands with CFormView. When i want to use it doesnt respond.
is there any way to activate them.
I'm using SDI style.

Re: Cant use Ctrl+C like commands with CFormView

22491714-Apr-05 22:55

224917

14-Apr-05 22:55

Implement your own handler for WM_COPY message to CFormView. Because by default CFormView dosen't implement it.

suhredayan
There is no spoon.

Re: Cant use Ctrl+C like commands with CFormView

ugur_basak14-Apr-05 23:15

ugur_basak

14-Apr-05 23:15

this works but i guess i must write some code.
Thanks

Re: Cant use Ctrl+C like commands with CFormView

Michael Dunn15-Apr-05 6:05

Michael Dunn

15-Apr-05 6:05

Add accelerators for Ctrl+C, Ctrl+V, and any other keys you want. The AppWizards make Edit menu commands with IDs of (I think) ID_EDIT_COPY, ID_EDIT_PASTE, and so on, so use those same IDs for the accelerators and add command handlers using those IDs as well. Then the menus and accelerators will go through the same handler.

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

LINKS~! Ericahist | 1ClickPicGrabber | CP SearchBar v2.0.2 | C++ Forum FAQ
Strange things are afoot at the U+004B U+20DD

Re: Cant use Ctrl+C like commands with CFormView

ugur_basak15-Apr-05 20:36

ugur_basak

15-Apr-05 20:36

void CClass::OnEditCopy()
{
// TODO: Add your command handler code here
((CEdit*)GetFocus())->Copy();
}

I write the code above for(copy,paste,cut,undo). these already have acceleretors. They seem to work. When i want to use on a combobox, as guessed it doesn't copy but at least there is no errors.

Line Selection

javi_jmc14-Apr-05 21:51

javi_jmc

14-Apr-05 21:51

Hi
I would like to ask you how to select a line drawn between 2 points

Thanks

Javi

Re: Line Selection

Cedric Moonen14-Apr-05 22:12

Cedric Moonen

14-Apr-05 22:12

What do you mean by 'select a line drawn between two points' ?? Which points, which line and what type of project are you using, from where this line comes from ?? And what do you want to do by 'selecting' a line ???

We are missing a LOT of informations, se be more explicit if you want an answer

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.