C / C++ / MFC Discussion Boards

NYTSX30-May-06 4:33

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

Re: Urgent :- How to Convert char* to LPWSTR

Naveen30-May-06 2:12

Naveen

30-May-06 2:12

Rocky Marrone wrote:
want to convert the char* into LPWSTR......

use MultiByteToWideChar

nave

Re: Urgent :- How to Convert char* to LPWSTR

Hamid_RT30-May-06 3:40

Hamid_RT

30-May-06 3:40

<br />
char *m_char;<br />
m_char=new (char);<br />
m_char="this is test";<br />
USES_CONVERSION;<br />
LPWSTR lpw;<br />
lpw=A2W(m_char);<br />
<br />

whitesky

Re: Urgent :- How to Convert char* to LPWSTR

PJ Arends30-May-06 7:33

PJ Arends

30-May-06 7:33

If you are using VC7.0 or later then you have access to the ATL7.0 conversion macros which are much better then the ATL3.0 conversion macros you introduced here. The new versions use the heap instead of the stack for memory allocation so they will not cause stack overflows if used in loops or recursive functions. Read about them in MSDN.

You may be right
I may be crazy
-- Billy Joel --

Within you lies the power for good, use it!!!

Re: Urgent :- How to Convert char* to LPWSTR

Hamid_RT30-May-06 8:11

Hamid_RT

30-May-06 8:11

Thank you for information Mr PJ Arends Smile | :)

whitesky

Re: Urgent :- How to Convert char* to LPWSTR

Sarath C30-May-06 4:18

Sarath C

30-May-06 4:18

if u r using MFC libraby, u can do this using

char * pName = new char[5];
strcpy(pName,"test");
CString strText(pName);

u can do different conversion using CString e.g: LPSTR, LPCTSTR, LPWSTR

LPWSTR pWstr = (LPWSTR)strText;

Sa^Rath

"D on't blindly follow rules you read somewhere without verifying that it makes sense for your situation!"

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