C / C++ / MFC Discussion Boards

Imtiaz Murtaza27-May-04 19:37

27-May-04 19:37

Dear Fiends,

I got a child dialog box. Problem is that on pressing the enter key the dialog disappears. What i want is that on pressing the enter key, some button on the dialog gets pressed. How can i do so.

Imtiaz

Re: A Dialog Box Problem

Anthony_Yio27-May-04 19:57

Anthony_Yio

27-May-04 19:57

override your OnOK and OnCancel of your Dialog. And comment out the
CDialog::OnOK() or CDialog::OnCancel()

Just check Michael Dunn FAQ article for detail.

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Re: A Dialog Box Problem

Zeeshan Bilal27-May-04 20:36

Zeeshan Bilal

27-May-04 20:36

Make the button Default from the prorpties of whhich u want the functionalty as a defualt on pressing first time ENter key..

may be it works..

Re: A Dialog Box Problem

Ravi Bhavnani28-May-04 2:36

Ravi Bhavnani

28-May-04 2:36

Override OnOK().

CMyDialog::OnOK()
{
  PostMessage (WM_COMMAND, IDC_SOME_BUTTON);
}

/ravi

My new year's resolution: 2048 x 1536
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Re: A Dialog Box Problem [modified]

Naren Neelamegam28-May-04 20:11

Naren Neelamegam

28-May-04 20:11

Create two member functions for you dlg class.
Eg.

void CTestDlg::OnOK()
{
}

void CTestDlg::OnCancel()
{
}

Enough... Go and press any key in ur dialog... it wont close (even ur close button too;))

To close ur dialog Add OnClose() Message Handler to your dlg class

void CTestDlg::OnClose()
{
EndDialog(0);
CDialog::OnClose();
}

now press you close button. It will close Smile | :)

Hava nice day
with regards

loveablevirus

modified on Saturday, January 17, 2009 9:27 AM

Dialog Box Problem

Imtiaz Murtaza27-May-04 19:37

Imtiaz Murtaza

27-May-04 19:37

Fiends,
I got a child dialog box. Problem is that on pressing the enter key the dialog disappears. What i want is that on pressing the enter key, some button on the dialog gets pressed. How can i do so.

Imtiaz

Re: Dialog Box Problem

GDavy27-May-04 19:40

GDavy

27-May-04 19:40

well you could set the focus on that button, when pressing enter that will activate it.
Other way is capturing the WM_KEYDOWN message in pretranslate func and check wParam for VK_RETURN.

Hope this helps you...
Regards,
Davy

Re: Dialog Box Problem

toxcct27-May-04 21:50

toxcct

27-May-04 21:50

Cwnd::SetFocus();

if you use this into OnInitDialog(), you should switch its return value to FALSE.

TOXCCT >>> GEII power

How to set a timer to a dialog

Zeeshan Bilal27-May-04 18:44

Zeeshan Bilal

27-May-04 18:44

HI,

How can i set timer Event to a dialog...

means how can i creat it, set it , kill it ,

any code

plz thanx

Re: How to set a timer to a dialog

Frank K27-May-04 19:36

Frank K

27-May-04 19:36

Hi,

<br />
//Win-Api, send a WM_TIMER(timer_event) message to a window<br />
timer_id = SetTimer(hwnd, timer_event, elapsed_time_ms, NULL)<br />
<br />
//Win-Api, call a function<br />
timer_id = SetTimer(NULL, 0, elapsed_time_ms, function_name)<br />
<br />
//and kill the timer<br />
KillTimer(timer_id)<br />

or this links
for MFC-Timer
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_mfc_CWnd.3a3a.SetTimer.asp[^]

for API-Timer
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/windowsuserinterface/windowing/timers/timerreference/timerfunctions/settimer.asp[^]

HTH
Frank

Re: How to set a timer to a dialog

Member 16246227-May-04 21:18

Member 162462

27-May-04 21:18

If is it mfc application , u can use this

BOOL CTelnetServerDlg::OnInitDialog()
{
… … …
… … …
… … …

SetTimer(100,20000,NULL);

… … …
… … …
… … …
}

BEGIN_MESSAGE_MAP(CTelnetServerDlg, CDialog)
//{{AFX_MSG_MAP(CTelnetServerDlg)
… … …
… … …
… … …

ON_WM_TIMER()
ON_WM_DESTROY()
… … …
… … …
… … …
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CTelnetServerDlg::OnTimer(UINT nIDEvent)
{

if (nIDEvent == 100)
{
// TODO: Add your message handler code here and/or call default
}
CDialog::OnTimer(nIDEvent);
}

void CTelnetServerDlg::OnDestroy()
{

KillTimer(100);

CDialog::OnDestroy();

}

the Clear() function

Eversman27-May-04 17:22

Eversman

27-May-04 17:22

Hey,

I have a couple of combo boxes, and When they hit new in the menu, I want it to clear, but when I use the m_varible.clear() command, it only clears the one I have highlighted or the last one I selected.

How do I get it to clear all of them?

Here is the code:

<br />
void CDEPDlg::OnFileNew() <br />
{<br />
	// TODO: Add your command handler code here<br />
		m_type1.Clear();<br />
		m_type2.Clear();<br />
		m_type3.Clear();<br />
		m_type4.Clear();<br />
		m_type5.Clear();<br />
}<br />
<br />

Thanks for any help

Re: the Clear() function

Anthony_Yio27-May-04 17:36

Anthony_Yio

27-May-04 17:36

Try this

// The pointer to my combo box.
extern CComboBox* pmyComboBox;

// Delete every other item from the combo box.
for (int i=0;i < pmyComboBox->GetCount();i++)
{
   pmyComboBox->DeleteString( i );
}

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Re: the Clear() function

Frank K27-May-04 20:06

Frank K

27-May-04 20:06

Hi,

try this

<br />
//clears all enteries from the combo box<br />
//MFC<br />
MyCombo.ResetContent(); <br />
<br />
//API<br />
SendMessage(MyComboHwnd, CB_RESETCONTENT, 0, 0);<br />

HTH
Frank

Re: the Clear() function

Eversman27-May-04 22:06

Eversman

27-May-04 22:06

Thanks guys that worked.

How about an editbox, that is ready only, and it displays the text of a combo box, I tried the clear() function there too, but it doesn't work.

Any ideas?

Thanks

Re: the Clear() function

Frank K27-May-04 22:53

Frank K

27-May-04 22:53

Hi,

<br />
//MFC<br />
MyEdit.SetSet(0, -1);<br />
MyEdit.Clear();<br />
<br />
//API<br />
SendMessage(MyEditHwnd, EM_SETSEL, 0, -1);<br />
SendMessage(MyEditHwnd, WM_CLEAR, 0, 0);<br />

HTH
Frank

Re: the Clear() function

Naren Neelamegam28-May-04 20:16

Naren Neelamegam

28-May-04 20:16

use this code...

void CDEPDlg::OnFileNew()
{
// TODO: Add your command handler code here
m_type1.ResetContent();
m_type2.ResetContent();
m_type3.ResetContent();
m_type4.ResetContent();
m_type5.ResetContent();
}

enought to clear all ur combo contents okay;)

Hava nice day
with regards

loveablevirus

Passing Variables

picasso227-May-04 17:12

picasso2

27-May-04 17:12

I have two dialog boxes dialog1, dialog2. One is the login.
how to pass the user and password from dialog1 to dialog2?
Visiual C++
Any hellp will be greatly appreciated

Re: Passing Variables

Anthony_Yio27-May-04 17:21

Anthony_Yio

27-May-04 17:21

If you are using MFC.

You could store your password or other data to your CWinApp

And you could just call

((CYourApp*)AfxGetApp())->m_strPass ;

Or you could consider bad coding design but easier(my opinion)

global variable through

extern LPCTSTR g_YourPassword;

There are plenty of ways to do it. However, when you are storing sensitive data, you need to be more precautious in your design like consider encryption and etc.

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Dropping files

Anonymous27-May-04 16:59

Anonymous

27-May-04 16:59

Basically what I want to do is drop a DLL from an executable. How exactly would I go about doing this. I was thinking about having the DLL as part of a resource file. I have no idea on how to do this. If anybody has source code, please post it.

Re: Dropping files

jmkhael28-May-04 1:02

jmkhael

28-May-04 1:02

Try this

http://www.codeproject.com/cpp/launching_program_from_resources.asp[^]

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

renaming vcproj?

bryce27-May-04 15:51

bryce

27-May-04 15:51

Lo all
anyone aware of a simple easy method for renaming a vc++.net project?
cheers
Bryce

---
Publitor, making Pubmed easy.
http://www.sohocode.com/publitor

Re: renaming vcproj?

Anthony_Yio27-May-04 16:08

Anthony_Yio

27-May-04 16:08

Delete your *.sln file. (only do this if you do not depend on it to load your multiple projects)

rename your file *.vcproj manually in window explorer.

Then, open your renamed *.vcproj in VS IDE.

In your solution explorer, right click on your proj node and select rename.

(I guess this is not simple enough though)

There is another way to do it as well. If your project name is unique throughout your files. Use Find and Replace - Find In Files in your IDE to replace all the name in all your files. But this way is a bit risky.

(I hope there are easier ways to do it)

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Parallel port address auto detect

jfk_lili27-May-04 15:50

jfk_lili

27-May-04 15:50

Hi guys,
is there any article or tutorial shown that how to detect parallel port address of computer automatically?
no i just make simple stuff to work with the parallel port but to make the stuff work on other computers i want to make it can detect the port address automatically instead of key in the address.

Thank U for ur help in advance!! Blush | :O

Re: Parallel port address auto detect

Anthony_Yio27-May-04 18:16

Anthony_Yio

27-May-04 18:16

#include <windows.h>
#define TEST_WINDOWS_NT (!(GetVersion() & 0x80000000))
/*********************************************************************
******************/
int GetParallelControllerKey(char *parKey)
{
HKEY hKey;
char myData[255];
LONG res;
DWORD mySize;
FILETIME ftLastWriteTime;

if (NULL==parKey)
return(-1);

*parKey=0;

char myKey[255];
sprintf(myKey,";HARDWARE\\DESCRIPTION\\System";);

res = RegOpenKeyEx(HKEY_LOCAL_MACHINE,myKey, 0, KEY_READ, &hKey);

if (res!=ERROR_SUCCESS)
return(-1);

DWORD dwIndex1;
char myKey1[255];
for (dwIndex1=0;dwIndex1<=10;dwIndex1++)
{
mySize=sizeof(myData);
res =
RegEnumKeyEx(hKey,dwIndex1,myData,&;mySize,NULL,NULL,NULL,&ftLastWriteT
ime);

if (res==ERROR_SUCCESS) // ERROR_SUCCESS 1
{
strcpy(myKey1,myKey);
strcat(myKey1,"\\");
strcat(myKey1,myData);

HKEY hKey1;
res = RegOpenKeyEx(HKEY_LOCAL_MACHINE,myKey1, 0, KEY_READ,
&hKey1);

if (res!=ERROR_SUCCESS)
return(-1);

DWORD dwIndex2;
char myKey2[255];
for (dwIndex2=0;dwIndex2<=10;dwIndex2++)
{
mySize=sizeof(myData);
res =
RegEnumKeyEx(hKey1,dwIndex2,myData,&mySize,NULL,NULL,NULL,&;ftLastWrite
Time);

if (res==ERROR_SUCCESS) // ERROR_SUCCESS 2
{
strcpy(myKey2,myKey1);
strcat(myKey2,";\\";);
strcat(myKey2,myData);

HKEY hKey2;
res =
RegOpenKeyEx(HKEY_LOCAL_MACHINE,myKey2, 0, KEY_READ, &;hKey2);

if (res!=ERROR_SUCCESS)
return(-1);

DWORD dwIndex3;
for (dwIndex3=0;dwIndex3<=10;dwIndex3++)
{
mySize=sizeof(myData);
res =
RegEnumKeyEx(hKey2,dwIndex3,myData,&;mySize,NULL,NULL,NULL,&;ftLastWrite
Time);

if (res==ERROR_SUCCESS) //
ERROR_SUCCESS 3
{
if
(0==strcmp(myData,";ParallelController";) )
{

strcpy(parKey,myKey2);

strcat(parKey,";\\";);

strcat(parKey,myData);
return(0);
}
} // ERROR_SUCCESS 3

} // for (dwIndex3

} // // ERROR_SUCCESS 2

} // for (dwIndex2

} // ERROR_SUCCESS 1

} // for (dwIndex1

return(-1);
} //GetParallelControllerKey

/*********************************************************************
******************/
int GetAddressLptPortInTheRegistry(int myPort)
{
HKEY phkResult;
char myKey[255];
char myData[255];
LONG res;
DWORD mySize;
DWORD myType;

res=GetParallelControllerKey(myKey);
if (res < 0)
return(-1);

sprintf(myData,";%s\\%d";,myKey,myPort-1);

res = RegOpenKeyEx(HKEY_LOCAL_MACHINE,myData, 0, KEY_READ,
&;phkResult);
if (res != ERROR_SUCCESS)
return(-1);

mySize=sizeof(myData);
myType=REG_BINARY;

res=RegQueryValueEx(
phkResult, // handle to key to query
";Configuration Data";, // address of name of value to query
NULL, // reserved
&;myType, // address of buffer for value type
(unsigned char *)myData, // address of data buffer
&;mySize // address of data buffer size
);
if (res != ERROR_SUCCESS)
return(-1);

//printf(";config data port %d 0x14 = 0x%02X 0x15 =
0x%02X\n";,myPort,myData[0x14],myData[0x15]);
return(myData[0x14] | myData[0x15]<<8 );
}

typedef BOOL (CALLBACK * PROCTYPE_Toolhelp32ReadProcessMemory)( DWORD
, LPCVOID, LPVOID, DWORD ,LPDWORD);
/*********************************************************************
******************/
int GetAddressLptPortInTheMemory(int myPort)
{
HINSTANCE hDLL=NULL; // Handle to DLL
PROCTYPE_Toolhelp32ReadProcessMemory myProcPointer=NULL;

hDLL = LoadLibrary(";kernel32";);
if (hDLL==NULL)
return(-1);

myProcPointer=(PROCTYPE_Toolhelp32ReadProcessMemory)GetProcAddress(hDL
L,";Toolhelp32ReadProcessMemory";);
if (myProcPointer==NULL) /*handle the error*/
{
FreeLibrary(hDLL);
return -1;
}

int portAddresses[]={0,0,0,0,0};
BOOL rtn=0;
DWORD cbLen=0;
//rtn = Toolhelp32ReadProcessMemory
rtn = myProcPointer
(0,
(LPCVOID *) 0x408,
portAddresses,
8,
NULL) ;

FreeLibrary(hDLL);

if (rtn==0)
return(-1);

if (portAddresses[myPort-1]<=0)
return(-1);

if (portAddresses[myPort-1]>=0x1000)
return(-1);

return(portAddresses[myPort-1]);
}

/*********************************************************************
******************/
int GetAddressLptPort(int myPort)
{
if(myPort<1)
return(-1);

if(myPort>3)
return(-1);

if (TEST_WINDOWS_NT)
return(GetAddressLptPortInTheRegistry(myPort));

return(GetAddressLptPortInTheMemory(myPort));
}

I found this in

http://www.lvr.com/jansfaq.htm

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