C / C++ / MFC Discussion Boards

Zac Howland30-May-06 9:41

30-May-06 9:41

If you are still having problems displaying your main dialog, change the DoModal call to the following:

int result = mainDlg.DoModal();

And place a breakpoint on that line. If you get to the breakpoint, then check the return value for DoModal. If you don't get to it, it means your message map isn't set properly (check the ID for your button and make sure you have correctly mapped the handler for it).

As far as this new problem ... I'm assuming you have an Edit Box on the dialog and that you set its password property (e.g. show up as *'s). Make sure the c_Password variable (which I'm assuming is the edit control) is a member of your CMyLogOnDialog class (you will see a declaration like: CEdit c_Password; in its header file). Additionally, the DoDataExchange method should have a DDX_Control call with the ID for that edit control and the c_Password variable as parameters.

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

Re: Beginner MFC Dialog Problems

Roger Stoltz30-May-06 5:53

Roger Stoltz

30-May-06 5:53

Is your message handler, OnBnClickedButton, called when you click the button?
Put a breakpoint there and see if your app breaks.

Your message map looks strange to me, but I haven't done VS2005 yet so I don't know what kind of spells the wizard does. Have you edited the message map yourself?
I would like to the following in the message map:
ON_BN_CLICKED( IDC_LOGON_BUTTON, OnBnClickedButton )
where IDC_LOGON_BUTTON is the resource ID of the button and OnBnClickedButton is the function pointer to the message handler.

--
Roger

It's supposed to be hard, otherwise anybody could do it!

Regarding CodeProject: "resistance is pointless; you will be assimilated"

POP3 server source

Arman S.30-May-06 5:30

Arman S.

30-May-06 5:30

Hi, everybody

I need a POP3 server code in C or C++. Could you please suggest me where I can find such code?

Thanks in advance

--
======
Arman

How to place an edit box and dialog box on a window in VC++ dot Net

Ashutosh Bagaria30-May-06 5:28

Ashutosh Bagaria

30-May-06 5:28

Hi,
I request u to kindly ans :
"How to place an edit box and dialog box on a window(SDI)in VC++ dot Net".
Thank you very much. Smile | :)

Re: How to place an edit box and dialog box on a window in VC++ dot Net

C^hris L^osinger30-May-06 6:11

C^hris L^osinger

30-May-06 6:11

try asking in the managed C++ forum[^]

Cleek | Image Toolkits | Thumbnail maker

Resize based on screen resolution

NYTSX30-May-06 4:33

NYTSX

30-May-06 4:33

I would like to have a control (a list) to always be the full length of the application screen, no matter what size the app is. Is there an easy way to have the control resize based on what size the user's resolution is?

thanks in advance.

Re: Resize based on screen resolution

Zac Howland30-May-06 5:26

Zac Howland

30-May-06 5:26

You can always use the GetSystemMetrics API with the Screen Width and Height values and do some math to size your control properly (I assume you don't want the control to take up the entire screen). Something like the following:

<br />
// there is a CWnd-derived object for the control declared somewhere<br />
const int ScreenWidth = ::GetSystemMetrics(SM_CXSCREEN);<br />
const int ScreenHeight = ::GetSystemMetrics(SM_CYSCREEN);<br />
<br />
CRect ControlRect;<br />
ControlRect.top = 100;   // start control 100 pixels from the top of the screen<br />
ControlRect.left = 50;   // start control 100 pixels from the left of the screen<br />
ControlRect.right = ControlRect.left + 300;   // make the control 300 pixels wide<br />
ControlRect.bottom = ScreenHeight - 50;   // make bottom 50 pixels above bottom of screen<br />
<br />
wndMyControl.MoveWindow(&ControlRect, TRUE);<br />

If you wanted the control on the right side, use the width variable and subtract the desired value from the starting place (and adjust your left value accordingly).

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

Re: Resize based on screen resolution

Hamid_RT30-May-06 7:55

Hamid_RT

30-May-06 7:55

I suggest use Zac Howland answer and also you can use WM_SIZE with this code
for example if your window has WS_THICKFRAME or... Smile | :)

whitesky

Re: Resize based on screen resolution

harilal31-May-06 0:42

harilal

31-May-06 0:42

hi check out this article "http://www.codeproject.com/dialog/layoutmgr.asp"
hope u will find it useful... Smile | :)

There are two ways of meeting difficulties :you alter the difficulties, or u alter yourself to meet them(Phyllis Bottome).

regards
harilal

Reading physical memory

aaaan30-May-06 2:30

aaaan

30-May-06 2:30

hi How can i read the physical memory from a perticular address
in windows 98.

thanx

nirmal

Re: Reading physical memory

toxcct30-May-06 3:05

toxcct

30-May-06 3:05

how are you trying to do ?
getting compilation/runtime errors ?

or don't even have a clue to start ?

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: Reading physical memory

C^hris L^osinger30-May-06 3:17

C^hris L^osinger

30-May-06 3:17

BYTE val = *(BYTE *)pAddress;

Cleek | Image Toolkits | Thumbnail maker

Re: Reading physical memory

Roger Stoltz30-May-06 3:32

Roger Stoltz

30-May-06 3:32

aaaan wrote:
How can i read the physical memory from a perticular address in windows 98.

Although Chris has answered your question I'd still like to know why and what you think you will find on that address. Confused | :confused:

Generally you have no idea where the memory manager has mapped things.
Even if you're trying memory mapped I/O, this will only have a chance to work on a toy-OS as Win98.
Later OS-versions requires a driver executing in kernel mode (Ring 0) to get access to such stuff.

Sniff | :^)

--
Roger

It's supposed to be hard, otherwise anybody could do it!

Regarding CodeProject: "resistance is pointless; you will be assimilated"

Re: Reading physical memory

toxcct30-May-06 3:34

toxcct

30-May-06 3:34

Roger Stoltz wrote:
what you think you will find on that address.
Generally you have no idea where the memory manager has mapped things.

that's why i didn't answer directly but asked some questions instead...

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: Reading physical memory

Roger Stoltz30-May-06 3:39

Roger Stoltz

30-May-06 3:39

Yup, I know why you asked the questions you did, tox... I know you know what you're doing/knowing. Wink | ;)

I just wanted the guy to start asking himself questions about where he's heading.
We might still learn something... WTF | :WTF:

It's supposed to be hard, otherwise anybody could do it!

Regarding CodeProject: "resistance is pointless; you will be assimilated"

Re: Reading physical memory

aaaan30-May-06 3:59

aaaan

30-May-06 3:59

hi actually i want to read the memory area from 0x0000F000 to 0xFFFFFFFF in RAM,
where the smbios information are stored.
its urgent ,i need this.Can any body help me please?

Thanx.

nirmal

Re: Reading physical memory

Roger Stoltz30-May-06 4:11

Roger Stoltz

30-May-06 4:11

Have a look at this[^] great article from Anton Bassov.
I found it searching for "physical address" at our favourite site: CodeProject!

However, I suspect since you're asking this kind of questions and are in a hurry, you don't really have the time to read and understand the article. Do it anyway! Tampering with the stuff Anton describes in his article can easily destroy things beyond repair. Cry | :((

Good luck! Rose | [Rose]

--
Roger

It's supposed to be hard, otherwise anybody could do it!

Regarding CodeProject: "resistance is pointless; you will be assimilated"

Re: Reading physical memory

aaaan30-May-06 19:03

aaaan

30-May-06 19:03

Thanx Roger
this article only for windows nt based,
but i need it to work in windows 95,98,ME.
Can u help me more.

thanx

nirmal

Re: Reading physical memory

Roger Stoltz30-May-06 21:40

Roger Stoltz

30-May-06 21:40

aaaan wrote:
Can u help me more

Nope. Since I haven't done this myself, at least not yet, I cannot tell you what to do.
I directed you to an article that has got something do to with it, but it not be suitable for your situation since apparently you'll need it working on old toy-OSs.

Why not use a later version the OS, at least Win2k. Then it would be a something that would last instead of something very temporarely.
If Win95 is the only option I suggest you use Google to find an article that Matt Pietrek has written about this since Anton claims that Matt Pietrek "has done this for Win95 many years ago".

--
Roger

It's supposed to be hard, otherwise anybody could do it!

Regarding CodeProject: "resistance is pointless; you will be assimilated"

Re: Reading physical memory

normanS30-May-06 19:06

normanS

30-May-06 19:06

Wicked, wicked, wicked.

He's going to blame you when Windows won't work anymore.

Re: Reading physical memory

Roger Stoltz30-May-06 21:42

Roger Stoltz

30-May-06 21:42

normanS wrote:
He's going to blame you when Windows won't work anymore

Mmm, feels like giving the five-year-old matches to play with.... Unsure | :~

It might go well, but then again, it might not...

It's supposed to be hard, otherwise anybody could do it!

Regarding CodeProject: "resistance is pointless; you will be assimilated"

Blinking effect in Cwnd child window

aragornx30-May-06 2:17

aragornx

30-May-06 2:17

Hello
I've got problem with blinking window. My application is multi-doc one. One of my view is simple CView with drawing code in OnPaint. This view is repainting every second (when new data is arriving). From this view I'm creating new window which is a child to my current view's frame. Class of this "child" window is inherited by CWnd class. Unfortunately whan my CView is repainting the top window (child window) is blinking. I've used double-buffering technique - and nothing - still the same problem. Here is my code's samples:

1. Making window:
void CBigValueEdit::setVisible( bool b ) {
if ( b == true ) {
if (this->Create( NULL, _T("Test;"), WS_CHILDWINDOW | WS_VISIBLE | WS_BORDER | WS_CAPTION , rect, parent, IDW_BIG_VALUE ) != 0 ) {
this->ShowWindow( SW_SHOW );
this->SetFocus();
visible = true;
calcRects();
setDigitVal();
}
} else {
// wyłącz okienko
visible = false;
this->ShowWindow( SW_HIDE );
this->DestroyWindow();
}
}

2. Double-buffering:
if ( bmpCreated == false ) {
bmpBufor.CreateCompatibleBitmap( dc, rect.Width(), rect.Height() );
vdc.CreateCompatibleDC( dc );
vdc.SelectObject( bmpBufor );
bmpCreated = true;
}

[...]
dc->BitBlt( 0, 0, rect.Width(), rect.Height(), &vdc, 0, 0, SRCCOPY );

3. Making window from main CView class:
ed.setTitle("Set high alarm :");
ed.setRectangle( rect );
ed.setFormat(4,2);
ed.setValue( selectedCounter->getAlarmLowValue() );
ed.setVisible( true );

ed - my class inherited by CWnd...

What;s wrong Where's the catch?
Please - help me...

-=AragornX=-

modified 4-Apr-13 4:07am.

Re: Blinking effect in Cwnd child window

Optimus Chaos30-May-06 21:05

Optimus Chaos

30-May-06 21:05

Have you responded to WM_ERASEBKGND? If you are using double buffering you should respond to this message ans return TRUE, to tell Windows that the background has been erased, otherwise Windows will erase the background with the default brush defined in the windows class.

Re: Blinking effect in Cwnd child window

aragornx30-May-06 23:48

aragornx

30-May-06 23:48

It didn't help... The unwanted effect is that the background window(parent) is in one moment drawn over the child window...

Urgent :- How to Convert char* to LPWSTR

Rocky Marrone30-May-06 2:08

Rocky Marrone

30-May-06 2:08

hi guys this is rocky...
i got stuck in a problem........
i want to convert the char* into LPWSTR......
Plz help me and thnx in advance
Best Regards Rocky

Rocky

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