C / C++ / MFC

Making a password dialog.

30-Jul-03 4:24

any time you need to find a ceratin .h file, do this:

go to your favorite search engine (www.google = the best)

do a search for "index *.h"

but replace the * with your h file name.

Ie, to find tiffio.h i would go to google, and type in

index tiffio.h

and browse the results.

*.*
cin >> knowledge;

keegan30-Jul-03 3:10

Re: Making a password dialog.

30-Jul-03 3:10

Ok, i give up. I've written the code for a password dialog box in MFC. everything works just dadndy, except when the user enters his/her password, the actual letters show up.

How to i get the asteric thingies? lol, i did a lot of googling and found some stuff on CPasswordDlg, but um, thats confusing.

any help? Unsure | :~

*.*
cin >> knowledge;

Chris Meech30-Jul-03 3:13

Chris Meech

30-Jul-03 3:13

Add the style 'ES_PASSWORD' to the edit box where the user enters a password.

Chris Meech

"what makes CP different is the people and sense of community, things people will only discover if they join up and join in." Christian Graus Nov 14, 2002.

Oh and for those that ask programming questions in the lounge. Seek the truth here[^].

Re: Making a password dialog.

keegan30-Jul-03 3:32

Re: Making a password dialog.

30-Jul-03 3:32

hah! i knew it was something simple. thank you sir!

*.*
cin >> knowledge;

Member 42425930-Jul-03 3:22

Member 424259

30-Jul-03 3:22

hey Keegan
have u designed the dialog box if yes then know u have the edit control in which the user is gng to enter the key word i.e the password. now what u have to do is just right click the edit control select the properties and then go to the style tab just click the password check box after that u will automatically see the char entered as ****
ok bye
TAKE CARE

Thanx
TAKE CARE

Problem with 'GetToolBarCtrl().EnableButton'

LittleYellowBird30-Jul-03 3:05

LittleYellowBird

30-Jul-03 3:05

Hi,

I am trying to 'enable/disable' and 'check/uncheck' a button on the Toolbar.

I send a message from the view class to indicate that the button must change and in CMainFrame I try to change it. These are the two lines of code.

m_wndToolBar.GetToolBarCtrl().PressButton(ID_BUTTON_OVERLAY_TRACES,bCheck);<br />
m_wndToolBar.GetToolBarCtrl().EnableButton(ID_BUTTON_OVERLAY_TRACES,bEnable);

The PressButton function works (ie the button goes in / out) but the EnableButton doesn't do anything!

I can see the varaible bEnable change and I have tried it with fixed values TRUE and FALSE, but nothing happens. EnableButton returns 1, so it thinks it has been successfull. Any ideas?

Cheers,

Ali

Re: Problem with 'GetToolBarCtrl().EnableButton'

Mike Dimmick30-Jul-03 3:47

Mike Dimmick

30-Jul-03 3:47

Your enable is probably being lost next time it's idle, due to MFC's built-in UI update facilities.

If this is a toolbar associated with your frame, in a document/view application, use the ON_UPDATE_COMMAND_UI support to enable or disable the button.

If MFC doesn't find an ON_UPDATE_COMMAND_UI handler, it will enable or disable the button based on whether there's an ON_COMMAND handler for the command.

Re: Problem with 'GetToolBarCtrl().EnableButton'

LittleYellowBird30-Jul-03 5:25

LittleYellowBird

30-Jul-03 5:25

It all makes sense now, thanks for the help. After I posted my question I could actually see the button being disabled sometimes, then being enabled back again, so I knew I was disabling it!

I've added the ON_UPDATE_COMMAND_UI handler and now buttons are greying nicely (rather like myself!). Thanks again for the help Smile | :)

,

Ali

HTML Help !!!!!!!!!!!!!!

Member 42425930-Jul-03 2:56

Member 424259

30-Jul-03 2:56

how can i run chage the size of an HTML Help window.
i mean i am using Html Help in my VC application .
few pages contain very less info to display so i want ot reduce the size of window and if the conatin is more then the size should increase can any one help me in solving this bug

Thanx
TAKE CARE

Re: HTML Help !!!!!!!!!!!!!!

melwyn30-Jul-03 4:23

melwyn

30-Jul-03 4:23

HH_WINTYPE WinType ;<br />
memset(&WinType,0,sizeof(WinType));<br />
WinType.cbStruct = sizeof(WinType);<br />
<br />
//fill the other members if required<br />
<br />
// Specify where the window should be<br />
RECT wndPos ;<br />
wndPos.top = 20;<br />
wndPos.left = 10;<br />
wndPos.right = 620;<br />
wndPos.bottom = 410;<br />
	<br />
WinType.rcWindowPos = wndPos;<br />
<br />
// Create the window<br />
HtmlHelp(0,"hh4mfc.chm",HH_SET_WIN_TYPE,(DWORD)&WinType) ;

Hope this helps.
Melwyn

Can we write "for DOS" program using VC++ 6?

Abin30-Jul-03 2:53

Abin

30-Jul-03 2:53

There are like 300 computers in my company has DOS 6.22 installed, nothing but DOS 6.22, and they will not be upgraded to any other OS in the near future. Now I need to write a program for them, I did not find any option in VC++ 6 that would allow me to write a pure DOS application, so I'm stuck...

Any suggestion other than "use Borland C++ instead"(I really, really dislike Borland, a code editor that does not allow mouse-scroll? what the hell?)? Thanks.

keegan30-Jul-03 3:07

30-Jul-03 3:07

dos is a 16 bit OS, vc++ 6 uses the windows 32 bit interface...

the only way i was able to write code for dos machines a month ago was by finding a really old computer with turbo C 1.1 on it (from 1994, heh). :-/ unless theres some other way...

*.*
cin >> knowledge;

Mike Dimmick30-Jul-03 3:54

Mike Dimmick

30-Jul-03 3:54

The last version of Visual C++ which could generate DOS or Win16 executables was version 1.52, IIRC.

I think you can still obtain VC 1.52 from Microsoft.

You could always write your application using Visual Studio's text editor, then cross-compile.

John M. Drescher30-Jul-03 4:05

John M. Drescher

30-Jul-03 4:05

=[ Abin ]= wrote:
use Borland C++ instead

I think this will be your best option... I know VC5+ did not support 16 bit code. I am not sure about VC4. However you may be able to pick up it really chaep on half.com[^]

John

Ryan Binns30-Jul-03 5:20

Ryan Binns

30-Jul-03 5:20

John M. Drescher wrote:
I am not sure about VC4

Nope. VC1.52 was the last one that supported DOS

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

John M. Drescher30-Jul-03 5:29

John M. Drescher

30-Jul-03 5:29

Thanks for the info. I was a borland user before VC5 so I had no idea of the previous versions.

John

Ryan Binns30-Jul-03 5:33

Ryan Binns

30-Jul-03 5:33

John M. Drescher wrote:
I was a borland user before VC5 so I had no idea of the previous versions.

You didn't miss much Unsure | :~

. VC4 was the first version that supported Win95, so it was a bit of a kludge. Prior to that, it was particularly primitive Smile | :)

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Cedric Moonen29-Jul-03 22:53

Cedric Moonen

29-Jul-03 22:53

It's because you're passing a parameter to a function and this parameter is never used in the function.

Two solutions:
- Suppress this parameter from your function definition/declaration (you don't use it in the function so you can safely delete it)
- Or use it in the function Smile | :)

!

Hope this helps

KingsGambit30-Jul-03 1:07

KingsGambit

30-Jul-03 1:07

'#pragma warning' directive can be used with 'disable' option to disable warnings.

Add #pragma warning (disable : 4100) in the beginning of your source file.

wb30-Jul-03 1:29

30-Jul-03 1:29

from AFX.H :

#ifdef _DEBUG
#define UNUSED(x)
#else
#define UNUSED(x) x
#endif
#define UNUSED_ALWAYS(x) x

Nitron30-Jul-03 3:08

Nitron

30-Jul-03 3:08

Or...

Specify it as unrefrenced in the function:

UNREFERENCED_PARAMETER(YourUnreferencedParam);

- Nitron

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

LittleYellowBird30-Jul-03 3:20

LittleYellowBird

30-Jul-03 3:20

I like your solution to this question best - I was interested because this bugs me too. Thanks.

Ali

Nitron30-Jul-03 3:23

Nitron

30-Jul-03 3:23

no prob.

- Nitron

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