C / C++ / MFC Discussion Boards

ctrl+alt+del(windows 2000)

slah8-Jul-02 1:43

8-Jul-02 1:43

i want to disable ctrl+alt+del under windows 2000 and SystemParameterInfo() is not working. here is the code

UINT _Junk;

// turn off ctl-alt-del
SystemParametersInfo(SPI_SETSCREENSAVERRUNNING,1,&_Junk,0);

// ... do stuff? like what?

// turn on ctl-alt-del
SystemParametersInfo(SPI_SETSCREENSAVERRUNNING,0,&_Junk,0);

what could be the problem, if anybody tells me.

Re: ctrl+alt+del(windows 2000)

DanielP8-Jul-02 5:42

DanielP

8-Jul-02 5:42

it works only for Windows 95/98/Me

Re: ctrl+alt+del(windows 2000)

-Dy9-Jul-02 1:54

-Dy

9-Jul-02 1:54

According to MSDN you shouldn't use SPI_SETSCREENSAVERRUNNING (look up SystemParametersInfo for details). Would SPI_SETSCREENSAVEACTIVE help here? - I don't think it would but it might be worth a try Unsure | :~

If you have MSDN there, look up the article called 'HOWTO: Disable Task Switching on Win32 Platforms' - it talks about low level hooks to achive the goal. If you find an easier / better way please post a reply here for the rest of us!

Dylan Kenneally
London, UK

Visual .NET Debugger on 6.0 C++ compiler

8-Jul-02 1:36

Hi there,
Just back from Barcelona for Tech-Ed 2002, and I saw in same presentations
that it was possible to use the new debugger shipped with Visual c++ with
the 6.0 compiler:

The question is:

1. How to do it?
2. I can still use after on the same machine
the debugger .NET with compiler 7.0 (Unmanaged C++)

Thanks, claudio

Override CArchive::IsStoring()==FALSE ?

Koep8-Jul-02 1:05

Koep

8-Jul-02 1:05

Hello,

i want to change the buffer contents of the CArchive or of the attached
CFile Object. But it is not allowed to make a write access in the "loading path" of serialization. I don't want to override the CArchive class.

Any solutions ?

Thanxs !

Marco

SetWindowPos Problem

AJ1238-Jul-02 0:39

AJ123

8-Jul-02 0:39

I have positioned an ActiveX control onto a tabsheet control. I now want the ActiveX control to resize with the window. For some reason i don't get the desired result, can nayone see where i am slipping up.

Thanks
Richard

Code Fragment:

Init Dialog - Creation of the ActiveX Control

m_tabSheet.GetWindowRect( &rc );
ScreenToClient( &rc );

rc.top += 30;
rc.bottom -=90;
rc.left += 5;
rc.right -= 40;

m_controlWrapper1.Create(m_hWnd,rc, _T("MSCAL.Calendar"), WS_CHILD, ....)

Resize Event
=============
RECT tabRC;

m_tabSheet.GetClientRect(&tabRC);

ScreenToClient( &tabRC );
tabRC.top += 30;
tabRC.bottom -=90;
tabRC.left += 5;
tabRC.right -= 40;

m_controlWrapper1.SetWindowPos(CWnd::wndTop, tabRC.left, tabRC.top,tabRC.right - tabRC.left, tabRC.bottom - tabRC.top,SWP_SHOWWINDOW);

Re: SetWindowPos Problem

Elrond8-Jul-02 4:53

Elrond

8-Jul-02 4:53

One thing is that I think you'd better use the MoveWindow function instead of the SetWindowPos function in that case.

Have you checked the the coordinate don't reach something like a bottom higher than a top...

Computers have enabled people to make more mistakes faster than almost any invention in history, with the possible exception of tequila and hand guns.
- Carl Gundlach

Task Bar in Full Screen Mode Implementation

nilaysoft8-Jul-02 0:18

nilaysoft

8-Jul-02 0:18

I want implement full screen mode in my small application. I wrote codes
as follows:

cx = //width of the screen;
cy = //height of the screen;
SetWindowPos (hwnd, NULL, -4, -4, cx, cy, SWP_NOZORDER | SWP_FRAMECHANGED);

They work pretty well, the minor boring thing is that the task bar (if Not
autohide) is still there. it will not disappear unless I click it once? any
solution? thanks, thanks.

http://ihome.ust.hk/~zhaoming

Re: Task Bar in Full Screen Mode Implementation

Nish Nishant8-Jul-02 1:53

Nish Nishant

8-Jul-02 1:53

Siuming wrote:
SetWindowPos (hwnd, NULL, -4, -4, cx, cy, SWP_NOZORDER | SWP_FRAMECHANGED);

Make that :-

SetWindowPos (hwnd, HWND_TOPMOST, -4, -4, cx, cy, SWP_NOZORDER | SWP_FRAMECHANGED);

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: Task Bar in Full Screen Mode Implementation

PJ Arends8-Jul-02 6:51

PJ Arends

8-Jul-02 6:51

Very close Nish, but if you want to make the window topmost, you have to drop the SWP_NOZORDER flag

---
CPUA 0x5041

Sonork 100.11743 Chicken Little

Within you lies the power for good - Use it!

Re: Task Bar in Full Screen Mode Implementation

Nish Nishant8-Jul-02 10:06

Nish Nishant

8-Jul-02 10:06

Oops!

I wasn't thinking I guess. Basically I copy/pasted his line of code and changed the 2nd argument where he had used NULL Blush | :O

Thanks PJ

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: Task Bar in Full Screen Mode Implementation

nilaysoft9-Jul-02 15:57

nilaysoft

9-Jul-02 15:57

Many Thanks! It works!

goal

Re: Task Bar in Full Screen Mode Implementation

Neha22-Nov-02 20:40

Neha

22-Nov-02 20:40

Hi,
I have been trying the same thing,But my window is not shown properly.
In my code
cx=GetSystemMetrics(SM_CXFULLSCREEN);
cy=GetSystemMetrics(SM_CYFULLSCREEN);

Regards
Neha

Re: Task Bar in Full Screen Mode Implementation

nilaysoft24-Nov-02 16:40

nilaysoft

24-Nov-02 16:40

Dear,
What I've used are:

<br />
int cx = GetSystemMetrics (SM_CXSCREEN);<br />
int cy = GetSystemMetrics (SM_CYSCREEN);<br />
int cyCaption = GetSystemMetrics(SM_CYCAPTION);<br />
int cyMenu = GetSystemMetrics(SM_CYMENU);<br />
SetWindowPos (hwnd, HWND_TOPMOST, -4, -(cyCaption + cyMenu + 4), screenx + 8, screeny + (cyCaption + cyMenu) + 8, SWP_FRAMECHANGED);<br />

Future of C++ in MS Windows?

faust8-Jul-02 0:04

faust

8-Jul-02 0:04

Hi,

I've recently installed .NET and is familiarizing myself with it right now. With
the common-runtime and C# is C++ getting less love from MS? I've been developing
with VC6.0 for some time now and I like it ok, but the .net release seems
to be moving in a general direction away from c++.

I am just wondering about the future of my favorite language?

Is the future with c# now? Or is it managed c++?

Is MFC or ATL based apps outdated now?

In essence, I'm wondering what I should focus on in the .Net world?
Confused | :confused:

faust

Re: Future of C++ in MS Windows?

Christian Graus8-Jul-02 0:08

Christian Graus

8-Jul-02 0:08

I say learn C# but don't bail on C++. For starters, they have put a lot into standards compliance, with more to come, and that has got to be a good thing.

Christian

I am completely intolerant of stupidity. Stupidity is, of course, anything that doesn't conform to my way of thinking. - Jamie Hale - 29/05/2002

Re: Future of C++ in MS Windows?

faust8-Jul-02 0:12

faust

8-Jul-02 0:12

I agree about the standards compliance. That is a good sign.

Thanks for the advice, and I think I'll follow it and learn c#.

I'm still interested in more comments from others as well.

Re: Future of C++ in MS Windows?

Michael P Butler8-Jul-02 0:39

Michael P Butler

8-Jul-02 0:39

My strategy for developing .NET applications is to use C# for the UI and database handling and use managed C++ for the system calls and stuff that the Framework doesn't support (such as TAPI, MAPI)

Michael Smile | :)

Logic, my dear Zoe, merely enables one to be wrong with authority. - The Doctor

Re: Future of C++ in MS Windows?

Nish Nishant8-Jul-02 1:55

Nish Nishant

8-Jul-02 1:55

Managed C++ is a nice option. You can mix .NET stuff with MFC and ATL all in the same cpp file Smile | :)

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: Future of C++ in MS Windows?

Senkwe Chanda8-Jul-02 6:00

Senkwe Chanda

8-Jul-02 6:00

That sounds like a nightmare to maintain though Confused | :confused:

And when God, who created the entire universe with all of its glories, decides to deliver a message to humanity, He WILL NOT use, as His messenger, a person on cable TV with a bad hairstyle.

Re: Future of C++ in MS Windows?

yarp8-Jul-02 3:56

yarp

8-Jul-02 3:56

For me C# is Microsoft answer to Java, I don't like and don't want to use C#. There will be enough room for C++ in the future too.
The problem is that the main C++ compiler is VS and that we all love VS, but should the MFC give up I'm sure there will be some replacement library - that library could generate CLR or else I don't care, I just want to code C++.
You see you're not alone Wink | ;)

Yarp

Re: Future of C++ in MS Windows?

faust8-Jul-02 4:35

faust

8-Jul-02 4:35

Nice. Still what Microsoft says and does is quite
important. I still need to make livelihood, even if it
means C#. As long as I don't ever need to use VB again,
I follow the money.
Poke tongue | ;-P

Still it would be nice if some of all this effort
had gone into providing better libraries and standard
conformance of c++ earlier, that way I don't think
there would have been the same "need" for C# or Java.
But who knows? Unsure | :~

Re: Future of C++ in MS Windows?

yarp8-Jul-02 7:06

yarp

8-Jul-02 7:06

As you say the final word is Microsoft.
But they still have to consider our position and reality.

I know some companies who ran Java projects and suffered many dispointements. At the moment C# is much too young to be compared to this experience and I think we can rely on Microsoft to make it a good Microsoft solutions integrated product, but time will do the rest.

I hope C++ will win.

Yarp

Re: Future of C++ in MS Windows?

sagmam8-Jul-02 5:39

sagmam

8-Jul-02 5:39

We both know this question you're asking is ahead of its time. Don't forget why Microsoft came up with C# in the first place. What happens if the "common-language runtime" doesn't prove itself practical in the long run?

In other words, and as a personal opinion, I would not consider anything else other than already-based lanuages (C, C++, VB, etc) for long-term projects.

In any case, you could always ask yourself a few questions before deciding to develop something in C#:

1. Do I really need the common-language feature? In other words, are there any other language involved in this project - even as a 3rd party module?

2. If C++ is a pain in this case, why not use VB or managed C++, or Java? Something that surely works on my customer's computers without installing new runtime libraries... What will C# give me that they won't? Is it performance, low maintenance, etc?

Look, it's not that I have anything against C#, or any other language for that matter. It's just that experience shows that these new initiatives are sometimes rendered obsolete by other initiatives after a relatively short time. The few exceptions are C and C++. So your customers will be more happy to know that their product is based on something solid. That's the most important issue in my opinion.

/=/=/=/=
Deus
/=/=/=/=

help me

7-Jul-02 23:52

the function to get all char in keyboard is GetKeyboardState.what is the function to know whether ctrl or shift is pressed.Also can u tell how to get the mouse events

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