Re: TCP/IP Sockets - C / C++ / MFC Discussion Boards

Re: How can several panels of a CTabCtrl share the same CComboBox ?

BlackDice12-Nov-04 2:43

12-Nov-04 2:43

this might not even work, it's just an idea. how about creating the combobox as a child of the dialog, not the tab, and see if you can use SetWindowPos() or MoveWindow(), (I can't remember which one uses &wndTopMost) without changing the size or location, just setting the the Z-order to &wndTopMost. If this doesn't work, I hope it at least gives you another idea.

If I write code in my sleep, does that make me brilliant, or just a lazy programmer?

My articles

www.stillwaterexpress.com

BlackDice - the programmer formerly known as bdiamond

Re: How can several panels of a CTabCtrl share the same CComboBox ?

Member 124237313-Nov-04 5:12

Member 1242373

13-Nov-04 5:12

Hello,

not bad this idea ... I already had the same ... Wink | ;-)

)
look at my code hereunder :

m_Tab.InsertItem( 0, "Tabnbr1");
m_Tab.InsertItem( 1, "Tabnbr22");
m_pTab1 = new CTab1;
m_pTab1->Create(CTab1::IDD, &m_Tab);
m_pTab1->SetWindowPos(NULL, 4, 28 , 0, 0,SWP_FRAMECHANGED | SWP_NOSIZE | SWP_NOZORDER);
m_pTab1->ShowWindow(SW_SHOW);
//
m_pTab2 = new CTab2;
m_pTab2->Create(CTab2::IDD, &m_Tab);
m_pTab2->SetWindowPos(NULL, 4, 28 , 0, 0,SWP_FRAMECHANGED | SWP_NOSIZE | SWP_NOZORDER);
m_pTab2->ShowWindow(SW_HIDE);
//
m_pDialogListe = new CTestDialogListe;
m_pDialogListe->Create(CTestDialogListe::IDD, &m_Tab); // solution1
m_pDialogListe->Create(CTestDialogListe::IDD, (CWnd*) m_pTab1); // solution2
m_pDialogListe->Create(CTestDialogListe::IDD, NULL);
m_pDialogListe->SetWindowPos(NULL, 4, 28 , 0, 0,SWP_FRAMECHANGED | SWP_NOSIZE | SWP_NOZORDER);
m_pDialogListe->ShowWindow(SW_SHOW);
As you can see, when we create the doughter dialog with the combo box in, we are obliged to give a parent.
If I give the Tab (solution1) as parent : ok, the combo is displayed on every panels, but is not accessable from any of the 2 panels.
If I give the panel1 (solution2) as parent : ok, the combo is displayed on panel1 and it works, but is even not displayed on panel 2. Is there a solution to make it appear and make it work on panel 2?
Thanks your your answer
DD

Re: How can several panels of a CTabCtrl share the same CComboBox ?

David Crow12-Nov-04 3:33

David Crow

12-Nov-04 3:33

Each panel should have its own combobox. If the populating of the combobox is expensive (e.g., querying a database), you can put the data (e.g., list) in the dialog instead. Then as each panel is activated, the data can be quickly pulled from the dialog's data structure rather than from an external source. Make sense?

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

Re: How can several panels of a CTabCtrl share the same CComboBox ?

Member 124237313-Nov-04 5:32

Member 1242373

13-Nov-04 5:32

Hello,

<each panel="" should="" have="" its="" own="" combobox="">
that's what all my trials seem to proove ... Frown | :-(

(
<you can="" put="" the="" data="" (e.g.,="" list)="" in="" dialog="" instead="">
what do you mean by "in the dialog instead" ?
the dialog with the tab is not permanent, there is a general menu above that calls this dialog-Tab when I need it, and when I return to general menu, all this stuff is destroyed.
Effectively, maybe I should make the extraction from DB once at the launch of the application, save the result in a global list, and fill every combos from this list. Remain the problem to synchonize this list with the DB ...

Why not ... if I don't find another solution
Thanks
DD

Re: How can several panels of a CTabCtrl share the same CComboBox ?

David Crow13-Nov-04 5:52

David Crow

13-Nov-04 5:52

qadddd_free wrote:
what do you mean by "in the dialog instead" ?

I assumed that the parent/owner window of the tab control was a dialog.

qadddd_free wrote:
Remain the problem to synchonize this list with the DB ...

If you are just reading from the database, what needs to be synchronized?

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

Re: How can several panels of a CTabCtrl share the same CComboBox ?

Member 124237314-Nov-04 11:23

Member 1242373

14-Nov-04 11:23

hello,

It is the case

<if you="" are="" just="" reading="" from="" the="" database,="" what="" needs="" to="" be="" synchronized?="">
I am reading from the database but this application is planned to be used by several users able to change the content of the tables I am reading, so I have to synchronize my list with eventual new records or with record content that have been changed

Regards
DD

Re: How can several panels of a CTabCtrl share the same CComboBox ?

David Crow15-Nov-04 3:41

David Crow

15-Nov-04 3:41

Then you are obviously going to have to requery the database each time. That is the only way to get updated records.

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

Re: TCP/IP Sockets

22491711-Nov-04 23:07

224917

11-Nov-04 23:07

Disable network.

A com solution

<br />
#define _WIN32_WINNT 0x0502<br />
<br />
#include <windows.h><br />
#include <stdio.h><br />
#include <objbase.h><br />
#include <netcon.h><br />
<br />
//Check the HRESULT of COM calls and exit on ERROR<br />
#define CheckHR(info) \<br />
    { \<br />
        HRESULT hr = (info); \<br />
        if(FAILED(hr)) \<br />
        { \<br />
               if ( hr != 0x800704D5 ) \<br />
               { \<br />
                    printf("ERROR"); \<br />
                    exit(1); \<br />
               } \<br />
        }\<br />
    }<br />
<br />
<br />
typedef enum<br />
{<br />
     DISABLE = 0,                    //Disable the Network Connection<br />
          ENABLE = 1,                    //Enable the Network Connection<br />
          PORT_STATUS = 2,     //Get the Network Port Status Command<br />
          LINK_STATUS = 3,     //Get the Network Link Status Command<br />
          ENDIS_PORT = 4          //Disable/Enable Network Connection Command<br />
}PORTSTATUS;<br />
<br />
<br />
<br />
void main(int argc, char** argv)<br />
{<br />
    INetConnectionManager*          pManager;<br />
    INetConnection*                    pConnection;<br />
    IEnumNetConnection*               pEnum;<br />
    INetConnectionConnectUi*     pConnectionUI;<br />
<br />
    ULONG     celtFetched;<br />
<br />
     BOOL bFoundInterface = FALSE;<br />
     int     nPortStatus = -1;<br />
     int nCmd = -1;<br />
     wchar_t ifname[100];<br />
<br />
<br />
     if (argc <= 2 )<br />
     {<br />
          printf("ERROR");<br />
          return;<br />
     }<br />
<br />
     swprintf(ifname,L"%S",argv[1]); //Copy the interface name "Local Area Connection"<br />
     nCmd = atoi(argv[2]);     //Copy the Command<br />
     if ( argc == 4 )<br />
     {<br />
          nPortStatus = ( argv[3][0] == '1' ) ? 1:0 ;     //Copy the Status to be Set<br />
     }<br />
<br />
<br />
     //Initialize COM<br />
    CheckHR( CoInitialize(NULL) );<br />
     //Get an Instance of INetConnectionManager<br />
    CheckHR( CoCreateInstance(CLSID_ConnectionManager, NULL, CLSCTX_SERVER, IID_INetConnectionManager, (void**)&pManager) );<br />
    //Enumerate the Network Connections<br />
    CheckHR( pManager->EnumConnections(NCME_DEFAULT, &pEnum) );<br />
     //Release the InetConnectionManager<br />
    pManager->Release();<br />
   <br />
    while( pEnum->Next(1, &pConnection, &celtFetched) == S_OK )<br />
    {<br />
        NETCON_PROPERTIES* properties;<br />
          //Get the properties of a Network Connection<br />
        CheckHR( pConnection->GetProperties(&properties) );<br />
          //Check the Interface Name<br />
          if ( (wcscmp(properties->pszwName,ifname)) == 0 )<br />
          {<br />
               bFoundInterface = TRUE;<br />
               switch(nCmd)<br />
               {<br />
               case PORT_STATUS:<br />
               case LINK_STATUS:<br />
                    {<br />
                         switch(properties->Status)<br />
                         {<br />
                         case NCS_DISCONNECTED:<br />
                         case NCS_DISCONNECTING:<br />
                         case NCS_HARDWARE_NOT_PRESENT:<br />
                         case NCS_HARDWARE_DISABLED:<br />
                         case NCS_HARDWARE_MALFUNCTION:<br />
                         case NCS_AUTHENTICATION_FAILED:<br />
                         case NCS_INVALID_ADDRESS:<br />
                         case NCS_CREDENTIALS_REQUIRED:<br />
                              printf("Port is not Functioning");<br />
                              break;<br />
                         case NCS_CONNECTED:<br />
                              {<br />
                                   if ( nCmd == PORT_STATUS )<br />
                                        printf("Port is UP");<br />
                                   else<br />
                                        printf("Link is UP");<br />
                              }<br />
                              break;<br />
                         case NCS_MEDIA_DISCONNECTED:<br />
                              printf("MEDIADISCONNECTED");<br />
                              break;<br />
                         default:<br />
                              printf("ERROR");<br />
                              break;<br />
                         }<br />
                    }<br />
                    break;<br />
               case ENDIS_PORT:<br />
                    {<br />
                         switch(nPortStatus)<br />
                         {<br />
                         case DISABLE:<br />
                              {<br />
                                   if(SUCCEEDED(pConnection->QueryInterface(IID_INetConnectionConnectUi, (void**)pConnectionUI)))<br />
                                   {<br />
                                        pConnectionUI->SetConnection(pConnection);<br />
                                        pConnectionUI->Disconnect(NULL, NCUC_NO_UI);<br />
                                        pConnectionUI->Release();<br />
                                   }<br />
                                   else<br />
                                   {<br />
                                        CheckHR( pConnection->Disconnect() );<br />
                                   }<br />
                              }<br />
                              break;<br />
                         case ENABLE:<br />
                              {<br />
                                   if(SUCCEEDED(pConnection->QueryInterface(IID_INetConnectionConnectUi, (void**)pConnectionUI)))<br />
                                   {<br />
                                        pConnectionUI->SetConnection(pConnection);<br />
                                        pConnectionUI->Connect(NULL, NCUC_NO_UI);<br />
                                        pConnectionUI->Release();<br />
                                   }<br />
                                   else<br />
                                   {<br />
                                        CheckHR( pConnection->Connect() );<br />
                                   }<br />
                              }<br />
                              break;<br />
                         default:<br />
                              printf("ERROR");<br />
                              break;<br />
                         }<br />
                    }<br />
                    break;<br />
               default:<br />
                    printf("ERROR");<br />
                    break;<br />
               }<br />
               CoTaskMemFree(properties);<br />
               pConnection->Release();<br />
               break;<br />
          }<br />
          else<br />
          {<br />
               CoTaskMemFree(properties);<br />
               pConnection->Release();<br />
               continue;<br />
          }<br />
    }<br />
     if ( !bFoundInterface )<br />
          printf("ERROR");<br />
<br />
    pEnum->Release();<br />
    CoUninitialize();<br />
}<br />
<br />

There is no spoon.

mail

Create device driver

snthomas11-Nov-04 22:41

snthomas

11-Nov-04 22:41

How to create Device Driver for win 2000.This driver must support all peripheral devices.

Re: Create device driver

22491712-Nov-04 0:54

224917

12-Nov-04 0:54

DDK(Device Driver Kit) has a lot of help and samples regarding this.

There is no spoon.

mail

Main handle of MFC dialog

Kreatief11-Nov-04 22:25

Kreatief

11-Nov-04 22:25

Hi,

one stupid question:

I need to know the handle of the main dialog created by the MFC Wizzard (dialog based app). How to get that? I am confused that I couldnt find anything about it. I am using this for a class for minimizing the app to the tray.
Do this dialogs have a handle?

DKT

Re: Main handle of MFC dialog

22491711-Nov-04 22:47

224917

11-Nov-04 22:47

CWnd::m_hWnd

CDialog is derived from CWnd, so you can access m_hwnd from CDialog or through CDialog !

There is no spoon.

mail

Re: Main handle of MFC dialog

Kreatief12-Nov-04 0:46

Kreatief

12-Nov-04 0:46

Thank you!

Thats it!

Btw, why cant I see this member variable in the ClassWizzard? I just see my own vars...

DKT

Re: Main handle of MFC dialog

BlackDice12-Nov-04 2:46

BlackDice

12-Nov-04 2:46

I think if you saw every inherited function and variable from all the parent classes, classwizard would be almost useless. Smile | :)

If I write code in my sleep, does that make me brilliant, or just a lazy programmer?

My articles

www.stillwaterexpress.com

BlackDice - the programmer formerly known as bdiamond

Re: Main handle of MFC dialog

David Crow12-Nov-04 3:35

David Crow

12-Nov-04 3:35

Kreatief wrote:
I am using this for a class for minimizing the app to the tray.

You use Shell_NotifyIcon() for this. There are plenty of examples on how to do this here at CP, and on MSDN. You can Google for even more.

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

Re: Main handle of MFC dialog

Kreatief12-Nov-04 4:51

Kreatief

12-Nov-04 4:51

Yeah sure. I did that, and got it to work. I am having other problems with the trayicon, which caused the problem! I have an MFC app, where I wanna handle Messages, eg. a Buttonclick on the icon. I dunno how to do that. Who can tell me just the base. I can learn myself, but I need to know the base. For a normal app you make an endless loop checking for messages. But here?

DKT

aaaaaaaaah.....help!!!!!my OnSetCursor()....doesnt work at all places!!!!!!

namaskaaram11-Nov-04 22:19

namaskaaram

11-Nov-04 22:19

ok....tis a long story.....here goes......
u c.....the code.....

HICON hIcon = AfxGetApp()->LoadCursor( IDC_CURSOR1 );
SetCursor( hIcon );
return TRUE;

is a working code coz i have put this in my Dialog based application (Xyz) in a class called CXyzDlg..... that is, i have already added this function "OnSetCursor()".....and the cursor changes......in the main Dlg box but..... i have derived a class from the CStatic Class named it as "CMyClass".....and i have created obcts of it in the CXyzDlg class.....basically these objects i have created by placing the "static control" on the dialog box and then..... thru the class wizard created an object linking it with the picture control of type CMyClass(that is .....SUBCLASSING).....
also in thiz CMyClass i have added the "OnSetCursor()" function as well......and many other mouse functions like "onmousemove()","LbuttonDown()".....etc.....but here when i put in the same code as i had put in the main Dlg box for the "OnsetCursor()".....it does not change!!!!!......y???

heres the code......that i have put in the derived class CMyClass......

// MyClass.cpp : implementation file<br />
//<br />
<br />
#include "stdafx.h"<br />
#include "creamz.h"<br />
#include "MyClass.h"<br />
<br />
#ifdef _DEBUG<br />
#define new DEBUG_NEW<br />
#undef THIS_FILE<br />
static char THIS_FILE[] = __FILE__;<br />
#endif<br />
<br />
/////////////////////////////////////////////////////////////////////////////<br />
// CMyStaticpot1<br />
<br />
CMyClass::CMyClass()<br />
{<br />
m_DragOn1=FALSE;<br />
m_pot1=0;<br />
m_update=TRUE;<br />
//AfxMessageBox("constructor activated");<br />
}<br />
<br />
CMyClass::~CMyClass()<br />
{<br />
}<br />
<br />
<br />
BEGIN_MESSAGE_MAP(CMyClass, CStatic)<br />
//{{AFX_MSG_MAP(CMyStaticpot1)<br />
ON_WM_LBUTTONDOWN()<br />
ON_WM_LBUTTONUP()<br />
ON_WM_MOUSEMOVE()<br />
ON_WM_SETCURSOR()<br />
//}}AFX_MSG_MAP<br />
END_MESSAGE_MAP()<br />
<br />
/////////////////////////////////////////////////////////////////////////////<br />
// CMyClass message handlers<br />
<br />
void CMyClass::OnLButtonDown(UINT nFlags, CPoint point) <br />
{<br />
// TODO: Add your message handler code here and/or call default<br />
<br />
HICON hIcon = AfxGetApp()->LoadCursor( IDC_CURSOR2 );<br />
SetCursor( hIcon );<br />
m_DragOn1=TRUE;<br />
<br />
<br />
CStatic::OnLButtonDown(nFlags, point);<br />
}<br />
<br />
void CMyClass::OnLButtonUp(UINT nFlags, CPoint point) <br />
{<br />
// TODO: Add your message handler code here and/or call default<br />
//AfxMessageBox("click up");<br />
<br />
HICON hIcon = AfxGetApp()->LoadCursor( IDC_CURSOR1 );<br />
SetCursor( hIcon );<br />
m_DragOn1=FALSE;<br />
<br />
<br />
CStatic::OnLButtonUp(nFlags, point);<br />
}<br />
<br />
void CMyClass::onmousemove(UINT nFlags, CPoint point) <br />
{<br />
// TODO: Add your message handler code here and/or call default<br />
<br />
//AfxMessageBox("move");<br />
<br />
if(m_DragOn1==TRUE)<br />
{<br />
<br />
if(m_pot1<62)<br />
m_pot1+=1;<br />
else<br />
m_pot1=0;<br />
<br />
//AfxMessageBox("dragging");<br />
// Invalidate();<br />
if(m_pot1%2==0)<br />
m_update=TRUE;<br />
<br />
}//end of if(m_DragOn==TRUE)<br />
<br />
<br />
<br />
<br />
CStatic::onmousemove(nFlags, point);<br />
}<br />
<br />
BOOL CMyClass::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) <br />
{<br />
// TODO: Add your message handler code here and/or call default<br />
<br />
if(m_DragOn1==FALSE)<br />
{<br />
<br />
//AfxMessageBox("CURSOR SET");<br />
<br />
HICON hIcon = AfxGetApp()->LoadCursor( IDC_CURSOR1 );<br />
SetCursor( hIcon );<br />
}<br />
else<br />
{<br />
HICON hIcon = AfxGetApp()->LoadCursor( IDC_CURSOR2 );<br />
SetCursor( hIcon );<br />
} <br />
<br />
<br />
return TRUE;<br />
<br />
<br />
// return CStatic::OnSetCursor(pWnd, nHitTest, message);<br />
}

plz help me out......
thanx in advance.....and thanx for ur intrest!!!!!

convert _int64 to double

Member 147636711-Nov-04 22:15

Member 1476367

11-Nov-04 22:15

How can I convert an _int64 variable to double?

Re: convert _int64 to double

David Crow12-Nov-04 3:47

David Crow

12-Nov-04 3:47

How about:

__int64 i64;
double d = (__int64) i64;

If you are using the .NET framework, check out the Convert.ToDouble() method.

Another way would be like:

__int64 i64;
char s[32];
sprintf(s, "%I64d", i64);
double d = atof(s);

I've not explicitly tried either of these.

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

TCP/IP Sockets

QuaKx11-Nov-04 22:08

QuaKx

11-Nov-04 22:08

How can I turn off all network traffic and then later turn it on again.

Regards
Tobias

Window without vertical borders

Sara Burns11-Nov-04 21:57

Sara Burns

11-Nov-04 21:57

A fixed font should allow 80 columns across a screen. However this doesn't quite fit when there are standard borders around the window when viewed in maximized mode.

Can anyone suggest how I can display a window, based on CScrollView, which does not have the normal side borders. Either no border or a very narrow border.

All suggestions appreciated.

Sara

How to hide an application on Win 9x/Me ?

chauhoangtrung11-Nov-04 20:16

chauhoangtrung

11-Nov-04 20:16

Hi,

I want to write an application.
I want to hide it in Task List on Windows 9x/Me.

Please help me !

Thanks.

Re: How to hide an application on Win 9x/Me ?

David Crow12-Nov-04 3:51

David Crow

12-Nov-04 3:51

Does ShowWindow(..., SW_HIDE) not do what you want?

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

Re: How to hide an application on Win 9x/Me ?

chauhoangtrung14-Nov-04 14:34

chauhoangtrung

14-Nov-04 14:34

I use ShowWindow(..., SW_HIDE).
It will be hidden. But It will be shown in Task List.

I don't know the way to hide it in Task List.

Re: How to hide an application on Win 9x/Me ?

David Crow15-Nov-04 4:41

David Crow

15-Nov-04 4:41

I do not know of a way to hide processes (those items on the Processes tab) shown by Task Manager. Why do you need this functionality?

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

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