How to know that the programmatically that the current user is logged on through local machine or through Remote session ? - C / C++ / MFC Discussion Boards

Re: Using CEdit with ES_NUMBER giving "Please enter a positive integer." followed by exception.

Neil Urquhart30-Sep-09 5:24

30-Sep-09 5:24

I have found a fix !

It seems in my break point testing in DoDataExchange I had put it after the DDX_Text function. It seems that the "Please enter a positive integer." message come from inside the relvant DDX_Text function somewhere.

I was therefore able to fix the problem by intercepting the value coming from CEdit at the top of DoDataExchange with a bit of validation code. The curcial test you need is to check the text in CEdit to see if the user deleted it all, even though it uses numbers. If he did delete it all I set the text and memver variable to a default value.

I also add validation code for my values range.

void CArtConDlg::DoDataExchange(CDataExchange* pDX)
{
	// Validation vars
	CEdit *cEd ;
	CString csTxt ;

	// Validate DmInterval
	cEd = (CEdit*)GetDlgItem(IDC_EDIT_DMINTERVAL) ;
	cEd->GetWindowText(csTxt) ;
	if(csTxt.IsEmpty()) {
		m_iDmInterval = MIN_DMINTERVAL ;
		csTxt.Format("%d", m_iDmInterval) ;
		cEd->SetWindowText((LPCSTR)csTxt) ;
	} else if(m_iDmInterval < MIN_DMINTERVAL) {
		m_iDmInterval = MIN_DMINTERVAL ;
	} else if(m_iDmInterval > MAX_DMINTERVAL) {
		m_iDmInterval = MAX_DMINTERVAL ;
	}

	// Validate OneShotHours
	cEd = (CEdit*)GetDlgItem(IDC_EDIT_ONESHOTHOURS) ;
	cEd->GetWindowText(csTxt) ;
	if(csTxt.IsEmpty()) {
		m_iTmrOneShotHours = MIN_TMRONESHOTHOURS ;
		csTxt.Format("%d", m_iTmrOneShotHours) ;
		cEd->SetWindowText((LPCSTR)csTxt) ;
	} else if(m_iTmrOneShotHours < MIN_TMRONESHOTHOURS) {
		m_iTmrOneShotHours = MIN_TMRONESHOTHOURS ;
	} else if(m_iTmrOneShotHours > MAX_TMRONESHOTHOURS) {
		m_iTmrOneShotHours = MAX_TMRONESHOTHOURS ;
	}

	
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CArtConDlg)
	DDX_Control(pDX, IDC_SPIN_ONESHOTHOURS, m_ctrlSpinOneShotHours);
	DDX_Control(pDX, IDC_SPIN_DMINTERVAL, m_ctrlSpinDmInterval);
	DDX_Control(pDX, IDC_TIMERONOFF, m_ctrlTimerOn);
	DDX_Control(pDX, IDC_LIGHTSENSORDAYNIGHT, m_ctrlLightSensor);
	DDX_Control(pDX, IDC_ARTWORK, m_ctrlArtworkOn);
	DDX_Control(pDX, IDC_EDITMODELAP, m_ctrlEditModeLap);
	DDX_Control(pDX, IDC_COMMSALIVE, m_ctrlCommsAlive);
	DDX_Control(pDX, IDC_EDIT_LUMIN, m_ctrlEditLumin);
	DDX_Control(pDX, IDC_SLIDER_LUMIN, m_ctrlSliderLumin);
	DDX_Control(pDX, IDC_LIST_FADERS, m_ctrlListFaders);
	DDX_Text(pDX, IDC_EDIT_FADERUPDATETIME, m_csFaderUpdateTime);
	DDX_Text(pDX, IDC_EDIT_TOTAL_AMPS, m_csTotalAmps);
	DDX_Text(pDX, IDC_EDIT_TOTAL_AMPSPCT, m_csTotalAmpsPct);
	DDX_Radio(pDX, IDC_RADIO_MODEON, m_iTimerMode);
	DDX_Check(pDX, IDC_CHECK_TMRONESHOTONEN, m_bTmrOneShotEn);
	DDX_Check(pDX, IDC_CHECK_TMRFRI, m_bTmrFri);
	DDX_Check(pDX, IDC_CHECK_TMRMON, m_bTmrMon);
	DDX_Check(pDX, IDC_CHECK_TMRSAT, m_bTmrSat);
	DDX_Check(pDX, IDC_CHECK_TMRSUN, m_bTmrSun);
	DDX_Check(pDX, IDC_CHECK_TMRTHU, m_bTmrThu);
	DDX_Check(pDX, IDC_CHECK_TMRTUE, m_bTmrTue);
	DDX_Check(pDX, IDC_CHECK_TMRWED, m_bTmrWed);
	DDX_Text(pDX, IDC_EDIT_ONESHOTENDENDDATETIME, m_csOneShotEndDateTime);
	DDX_Radio(pDX, IDC_RADIO_DMCYCLE, m_iDisplayMode);
	DDX_Text(pDX, IDC_EDIT_DMINTERVAL, m_iDmInterval);
	DDX_Text(pDX, IDC_EDIT_DMFILE, m_csDmFile);
	DDV_MaxChars(pDX, m_csDmFile, 32);
	DDX_DateTimeCtrl(pDX, IDC_DATETIMEPICKER_START, m_ctTmrStart);
	DDX_DateTimeCtrl(pDX, IDC_DATETIMEPICKER_FINISH, m_ctTmrFinish);
	DDX_DateTimeCtrl(pDX, IDC_DATETIMEPICKER_ONESHOTSTART, m_ctTmrOneShotStart);
	DDX_Text(pDX, IDC_EDIT_ONESHOTHOURS, m_iTmrOneShotHours);
	DDX_Radio(pDX, IDC_RADIO_DMPERIODMIN, m_iDmIntervalUnits);
	DDX_Text(pDX, IDC_EDIT_DMLASTFILE, m_csDmLastFile);
	DDX_Text(pDX, IDC_EDIT_DMLASTUPDATE, m_csDmLastFileUpdated);
	DDX_Radio(pDX, IDC_RADIO_LSORAUTO, m_iLightSensorOverRide);
	DDX_Slider(pDX, IDC_SLIDER_LUMIN, m_iSliderLumin);
	DDX_Text(pDX, IDC_EDIT_LUMIN, m_iEditLumin);
	DDX_Text(pDX, IDC_EDIT_FILE, m_csEditFile);
	//}}AFX_DATA_MAP

}

Barcode generator library

Marc Soleda30-Sep-09 3:23

Marc Soleda

30-Sep-09 3:23

Hi all,
do you know any good barcode generator lib? I've found some, including some good CP articles, but they are not enough as I need the maximum number of type of barcodes to cover: 1D and 2D.

Any option is welcome: paid or free&opensource.

thanks in advance,
Marc Soleda

... she said you are the perfect stranger she said baby let's keep it like this... Dire Straits

Re: Barcode generator library

includeh1030-Sep-09 5:14

includeh10

30-Sep-09 5:14

If you prepare to print barcode, you have to buy barcode fonts - only fonts can be printed clearly enough for scanner.

barcode fonts are code generators.

Re: Barcode generator library

Alan Balkany5-Oct-09 4:34

Alan Balkany

5-Oct-09 4:34

I'm using DLSoft's barcodes for .NET ([^]) which is adequate.

They cover a wide range of 1D and 2D barcodes, and the technical support is adequate.

Pure virtual Function ??

Game-point30-Sep-09 3:21

Game-point

30-Sep-09 3:21

Hi

Why we are using Pure virtual function and Which situation we used Pure virtual function ??

Thanks Cool | :cool:

Re: Pure virtual Function ??

David Crow30-Sep-09 3:25

David Crow

30-Sep-09 3:25

See here.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Re: Pure virtual Function ??

CPallini30-Sep-09 7:14

CPallini

30-Sep-09 7:14

We're building interfaces using pure virtual functions, and yes, we used pure virtual functions mostly when we needed interfaces. Roll eyes | :rolleyes:

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

How to know that the programmatically that the current user is logged on through local machine or through Remote session ?

Kushagra Tiwari30-Sep-09 3:10

Kushagra Tiwari

30-Sep-09 3:10

I wanted to know that is there any way for an application to know that if the logged on user is on local machine or on Remote session ??

Regards,
Kushagra

I hate coding but I luv to develop Smile | :)

Re: How to know that the programmatically that the current user is logged on through local machine or through Remote session ?

David Crow30-Sep-09 3:30

David Crow

30-Sep-09 3:30

I've got no way to verify this, but have you tried NetUserGetInfo()? You might also find something in the Remote Desktop Services API.

Re: How to know that the programmatically that the current user is logged on through local machine or through Remote session ?

kilt30-Sep-09 4:30

kilt

30-Sep-09 4:30

Just use System apis (Win32 FAQ)

Re: How to know that the programmatically that the current user is logged on through local machine or through Remote session ?

Randor 30-Sep-09 19:49

Randor

30-Sep-09 19:49

Read the %SessionName% environment variable and see if it contains the characters 'RDP'

http://www.codeproject.com/Messages/2090000/Re-Detecting-Remote-Desktop-Events.aspx[^]

Best Wishes,
-David Delaune

how convert char[] to LPWSTR for create file !?

hadi kazemi30-Sep-09 2:34

hadi kazemi

30-Sep-09 2:34

hi
i use function waveOpen that create one wave file. this function get name of file in LPWSTR type.

i generate name of file with below code:

[code]
LPWSTR fileNameLPW;
char fileNameStr[20];
int indexOfFile;

sprintf(fileNameStr,"NEWFILE%d.WAVE",indexOfFile);

CreateWave(fileNameLPW);

[/code]

now how can i copy fileNameStr to fileNameLPW !?

Re: how convert char[] to LPWSTR for create file !?

Hristo-Bojilov30-Sep-09 2:39

Hristo-Bojilov

30-Sep-09 2:39

You could use MultiByteToWideChar for example. Smile | :)

Life is a stage and we are all actors!

Re: how convert char[] to LPWSTR for create file !?

Richard MacCutchan30-Sep-09 2:44

Richard MacCutchan

30-Sep-09 2:44

hadi kazemi wrote:
now how can i copy fileNameStr to fileNameLPW !?
Quote Selected Text

Well you should start by using all wide character functions, then fileNameLPW is redundant e.g.

WCHAR fileNameStr[20];
int indexOfFile;

wsprintf(fileNameStr,L"NEWFILE%d.WAVE",indexOfFile);

CreateWave(fileNameStr);

Re: how convert char[] to LPWSTR for create file !?

Joe Woodbury30-Sep-09 6:08

Joe Woodbury

30-Sep-09 6:08

That should be swprintf or wsprintfW

(or use TCHAR instead of WCHAR and let the compiler macros pick the right windows function.)

Re: how convert char[] to LPWSTR for create file !?

Richard MacCutchan30-Sep-09 6:21

Richard MacCutchan

30-Sep-09 6:21

Joe Woodbury wrote:
That should be swprintf or wsprintfW

I checked my spelling carefully before posting, and still got it wrong Mad | :mad:

Thanks for correcting it.

same name macro with same

LoveneetSingh30-Sep-09 2:20

LoveneetSingh

30-Sep-09 2:20

hello coder
Is it posile to define same name macro in c project
like folloing

<br />
test1.h<br />
#define process (a&4) <br />
test2.h<br />
#define process (a&4) <br />
<br />

Re: same name macro with same

Richard MacCutchan30-Sep-09 2:45

Richard MacCutchan

30-Sep-09 2:45

What are you trying to achieve here, this makes no sense?

Re: same name macro with same

Maximilien30-Sep-09 3:54

Maximilien

30-Sep-09 3:54

maybe, but the compiler/preprocessor will probably report duplicate something.

But you could do something like (not really test, but I've seen code like in out stuff):

in test1.h

#ifndef process
#define process (a&4)
#endif

and in test2.h

#ifdef process
#undef process
#define process (a&4)
#endif

This signature was proudly tested on animals.

Re: same name macro with same

Richard MacCutchan30-Sep-09 6:23

Richard MacCutchan

30-Sep-09 6:23

I still have no idea what you are trying to achieve Confused | :confused:

How to implement copy and paste in edit box in MFC

deadlyabbas30-Sep-09 2:00

deadlyabbas

30-Sep-09 2:00

I am having a class which is inheriting CEdit class ..........
But when I try to do ctrl c and ctrl v in the edit box of my dialog it does not perform copy paste.
but if I right click and then copy and paste then it is working fine.

Re: How to implement copy and paste in edit box in MFC

includeh1030-Sep-09 5:21

includeh10

30-Sep-09 5:21

MFC dialog some times blocks keyboard messages for its controls - really no good.

You can override key-down message of CEdit to see if CTRL-C is sent to CEdit, if not, use PreTranslateMessage(...) of dialog to send messages you need to the CEdit.

Re: How to implement copy and paste in edit box in MFC

Richard MacCutchan30-Sep-09 6:25

Richard MacCutchan

30-Sep-09 6:25

includeh10 wrote:
MFC dialog some times blocks keyboard messages for its controls - really no good.

I thought there was someting in resource files for defining a connection between particular key combinations and commands; ACCELERATORS or similar?

Removing manifest entry

KASR130-Sep-09 1:50

KASR1

30-Sep-09 1:50

How can we remove/rename a manifest entry programatically?

Re: Removing manifest entry

Randor 30-Sep-09 19:57

Randor

30-Sep-09 19:57

A manifest is simply a resource stored in the .rsrc resource section of the executable. You can modify/update or remove it with the UpdateResource Function[^]. You need to call it with lpType argument set as RT_MANIFEST. RT_MANIFEST is #defined as integer 24.

Best Wishes,
-David Delaune

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