C / C++ / MFC

Re: How to automatically perform function when dialog appears?

14-May-03 11:00

At the tail-end of OnInitDialog(), use PostMessage(). This will place a message in the dialog's message queue, but still allow OnInitDialog() to return.

desantos14-May-03 11:11

desantos

14-May-03 11:11

i am a novice myself, but if i understand you correctly this is the answer to your question.

use the function SetDlgItemText(int nID,LPCTSTR lpszString);

for example:

i call a function which writes to a CEdit control from OnInitDialog() in one of my applications, this is how i display text in the edit box.

SetDlgItemText(IDC_YOUR_EDIT_CONTROL,yourString)

or using the class wizard you can assign a CString variable to the edit control.
Once you do this you will it be defined in the header file.

//header
CString yourEdit;

then in your OnInitDialog() do the following:
//cpp
yourEdit = yourString;
UpdateData(TRUE);

I hope this is what you asking for

Re: How to automatically perform function when dialog appears?

John R. Shaw14-May-03 13:23

John R. Shaw

14-May-03 13:23

Desanto is correct on how to replace all text in the edit control in OnInitDialog().

It also appears you want to receive more updates after the dialog is loaded. One way of doing that would be to start a timer using SetTimer() and handle the WM_TIMER message, so you can check if an update is required.
1) if you want to replace all text call SetDlgItemText().
2) If you want add to the current text then you have to A) use EM_SETSEL (CEdit::SetSel()) to set current selection to end of currently displayed text [it might already be set there by last write], B) use EM_REPLACESEL (CEdit::ReplaceSel()) to insert the new text you want to add [followed by CR/LF].

Wink | ;)

Hope this helps.

Trust in the code Luke. Yea right!

ambiguous symbol

Unplugged14-May-03 10:22

Unplugged

14-May-03 10:22

I'm doing the following

#include <fstream.h>

then later

fstream fin;

and it gives me this error.

C:\parsells\C++ Testing\ccode\odbc_stuff\odbc_stuff.cpp(137) : error C2872: 'fstream' : ambiguous symbol

there is other code in there as well, but that is where it says the error is. WTF | :WTF:

ICXC
NIKA

Re: ambiguous symbol

Ed K14-May-03 11:17

Ed K

14-May-03 11:17

scope?? are you 'using namespace std?'

std::fstream

ed

Regulation is the substitution of error for chance.

Re: ambiguous symbol

Unplugged20-May-03 4:35

Unplugged

20-May-03 4:35

when I put in the std:: infront of the the fstream the error changes.

I wrote this code and compiled it on it's own and it all worked, now when I'm trying to merge it into some code that I downloaded it doesn't work. Confused | :confused:

here's what I'm doing.

std::fstream fin;
fin.open(filename,ios::in | ios::nocreate);

the errors I get are:

odbc_stuff.cpp(30) : error C2079: 'fin' uses undefined class 'basic_fstream<char,struct std::char_traits<char=""> >'

odbc_stuff.cpp(31) : error C2228: left of '.open' must have class/struct/union type

odbc_stuff.cpp(31) : error C2039: 'nocreate' : is not a member of 'basic_ios<char,struct std::char_traits<char=""> >'

odbc_stuff.cpp(31) : error C2065: 'nocreate' : undeclared identifier

I don't get it. I thought I was doing a standard file open. Mad | :mad:

ICXC
NIKA

VS integration of my common control

compiler14-May-03 9:37

compiler

14-May-03 9:37

I created a Win32-based (MFC, ATL and ActiveX support via wrappers) control a while back. The thing is generally useful, and I find myself using it quite a bit. The problem is that I have to constantly refer to the headers to find message and notification declarations, and then hand-code the message maps, etc.

I'd really like VS.Net to automagcially support my class as well as it does, say, COMBOBOX. Is there a way to declare the interface of my control to VS so that it can add the appropriate stuff to the "events", "messages" and "overrides" section of the properties window (shown when a class is selected in Class View. I'd really like it to work when a member of my control class is added to a dialog, AND when I use CCtrlView with my class.

Anyone have experience with this? Or, at least know where this stuff is documented?

Thanks,

Dialog :o)

MemLeak14-May-03 9:21

MemLeak

14-May-03 9:21

Hi,

Here is my problem. I have a MDI App that countain some modeless dialogbox. I would like to make sure that my dialogs are always withing the boundary of my mainframe. Also, I would like to find a way that my dialogs follows the MDI App when I move the mainframe.

Any Ideas?

thanks

Everything's beautiful if you look at it long enough...

Re: Dialog :o)

JayP14-May-03 9:27

JayP

14-May-03 9:27

Have u tried using CWnd::MoveWindow for your modeless dialog?

Re: Dialog :o)

Nitron14-May-03 14:28

Nitron

14-May-03 14:28

MemLeak wrote:
Also, I would like to find a way that my dialogs follows the MDI App when I move the mainframe.

If you make the modeless dialog a "child dialog" via the properties in the resource editor, it should follow the mainframe when called with create() and ShowWindow(SW_SHOW).

- Nitron

"Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb

Placing a control in an edit control's NC area

Diarrhio14-May-03 9:15

Diarrhio

14-May-03 9:15

I've looked all around CP and MSDN for a way to place a control (e.g. a button) within an edit control's non-client area, but haven't had any luck.

All of the implementations I have seen haven't really placed controls there, but have just mimicked the control by resizing and painting the NC area. Like this:
http://www.codeproject.com/editctrl/fileeditctrl.asp[^]

I tried just placing the control in the client area, but it gets painted over as soon as the user clicks in the edit box, which is ugly.

Can someone point me in the right direction?

Thanks.

Re: Placing a control in an edit control's NC area

John R. Shaw14-May-03 13:36

John R. Shaw

14-May-03 13:36

Since an edit control has no non-client area the article you found is probubly the best place to start.

Trust in the code Luke. Yea right!

get hardware info ?

_skidrow_vn_14-May-03 8:17

_skidrow_vn_

14-May-03 8:17

I want to get some info about hardware.
such as: name of device....

1. Operating System: Microsoft Windows 2000 Professional (5.0, Build 2195)
2. Mainboard: Chipset Via tech
3. CPU Processor: Intel Pentium III 933Mhz
4. Ram: 256MB RAM
5. Harddisk:ST340016A
6. Netword card: REPOTEC RP-1624W 100Base-TX PCI Fast Ethernet Adapter
7. Display VGA card: NVidia Riva TNT
8. Sound card: Avance AC97 Audio
9. CD Rom:
10. Keyboard:
11. Mouse: ...

Cound you help me to get this info of hardware Confused | :confused:

thank you!

Re: get hardware info ?

David Crow14-May-03 9:22

How to secure delete files

14-May-03 9:22

That's a tall order as the information is scattered amongst several APIs. Try:

GetSystemInfo()<br />
GetVersionEx()<br />
DirectSoundEnumerate()<br />
GlobalMemoryStatusEx()

Other posters can surely complement this list to get a full manifest of the hardware information.

gmlnd14-May-03 7:51

14-May-03 7:51

I have a file deleter program that deletes cookies and temporary internet files, however, it sends the files to the recycle bin.
Is it possible to secure delete the files, this means that the files are not moved to the "recycle bin", but rather are actually fully deleted from the hard drive.

David Crow14-May-03 8:05

14-May-03 8:05

What method are you currently using to delete with?

gmlnd14-May-03 8:53

14-May-03 8:53

I use the following class to delete files.
void CFileDeleter::Initialize()
{
m_nDeleteType = 0;
LoadDeleteType();
}

void CFileDeleter::LoadDeleteType()
{
HKEY hKey;
long lRet;
int nType = 0;
DWORD dw = sizeof(int);
DWORD dwType = REG_DWORD;
lRet = RegOpenKeyEx(HKEY_CURRENT_USER,"Software\\iISoftware\\iIWiper",0,KEY_ALL_ACCESS,&hKey);
if(lRet == ERROR_SUCCESS)
{
lRet = RegQueryValueEx(hKey,"DeleteType",0,&dwType,(LPBYTE)&nType,&dw);
if(lRet == ERROR_SUCCESS)
{
m_nDeleteType = nType;
}
}

}

BOOL CFileDeleter::FileDeleteOperation(LPTSTR lpszFile)
{
DWORD dwAttrib;
dwAttrib = GetFileAttributes(lpszFile);
if (dwAttrib == 0xFFFFFFFF)
{
return FALSE;
}
switch(m_nDeleteType)
{
case DELETE_RECYCLE:
{
SHFILEOPSTRUCT f;
ZeroMemory(&f, sizeof(SHFILEOPSTRUCT));
f.wFunc = FO_DELETE;
f.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION;
lpszFile[lstrlen(lpszFile)+1] = 0;
f.pFrom = lpszFile;
SHFileOperation(&f);
break;
}

case DELETE_DELETE:
DeleteFile(lpszFile);
break;

default:
{
SHFILEOPSTRUCT f;
ZeroMemory(&f, sizeof(SHFILEOPSTRUCT));
f.wFunc = FO_DELETE;
f.fFlags = FOF_ALLOWUNDO;
f.pFrom = lpszFile;
SHFileOperation(&f);
break;
}

}

return TRUE;
}

David Crow14-May-03 9:07

14-May-03 9:07

Just omit the FOF_ALLOWUNDO flag.

gmlnd14-May-03 9:17

14-May-03 9:17

Thank's,
I deleted the FOF_ALLOWUNDO flag.
Now I don't see the deleted files in the recycle bin anymore, but when I click on the Clean File in my program, before it deletes, for every cookie a dialog box pops: Are you sure you want to delete "cookie name"?

Is there any way I could stop that message from popping up?

David Crow14-May-03 9:25

14-May-03 9:25

azi_games wrote:
Is there any way I could stop that message from popping up?

Adding FOF_NOCONFIRMATION, I presume.

gmlnd14-May-03 9:34

API alternative to HOSTS file modification

14-May-03 9:34

Thank you for your help.

Phil Speller14-May-03 7:16

Phil Speller

14-May-03 7:16

I'm wondering if there is an API fn to effectively perform the same as adding an entry to the HOSTS file. I seem to be drawing a blank so far with my google and msdn search attempts.

Cheers,

Phil

Re: API alternative to HOSTS file modification

David Crow14-May-03 8:11