C / C++ / MFC

27-Jul-06 20:25

Hi All,

i have one question related with CRichEditCtrl.
How can we identify the word underlying he mouse pointer?
means if i have some text in richedit.

1) programming window's is not easy.
2) Subclassing is tec*hnique by which you can process the messages
before the controll processes it.

* word is where mouse pointer is.
i want to get that word means i need to get the technique word when
mouse pointer is on it!!

how can i achieve this?
any help will be appreciated

Thanks and Regards
Harshal

Naveen27-Jul-06 20:32

Naveen

27-Jul-06 20:32

CRichEditCtrl::CharFromPos()..?

nave

_AnsHUMAN_ 27-Jul-06 20:38

_AnsHUMAN_

27-Jul-06 20:38

harsha_1234 wrote:
identify the word underlying the mouse pointer

You will have to subclass the CRichEditCtrl.
Here is what I did in the MouseMove message. Just a crude idea on how you could proceed with this.
int i=CharFromPos(point);
SetSel (i,i+3);
char *mySel=new char[100];
GetSelText (mySel);
AfxMessageBox(mySel);
delete[] mySel;

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

harsha_123427-Jul-06 20:49

27-Jul-06 20:49

i alway's get error that
error C2065: 'CharFromPos' : undeclared identifier

i mean CharFromPos is member msdn show's in that way
but it gives error

_AnsHUMAN_ 27-Jul-06 20:53

_AnsHUMAN_

27-Jul-06 20:53

Did you subclass the richeditControl?

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

harsha_123427-Jul-06 21:15

27-Jul-06 21:15

int i = SendMessage(EM_CHARFROMPOS,0,LPARAM(&point));
SetSel (i,i+3);
char *mySel=new char[100];
GetSelText (mySel);
//AfxMessageBox(mySel);
delete[] mySel;

this is working fine
actually in sendmessage LPARAM requires the address of point structure

Thanks now i can proceed

Hamid_RT27-Jul-06 21:00

27-Jul-06 21:00

How do you use CharFromPos its in CRichEditCtrl and in this error it seems you dont use from CRichEditCtrl

WhiteSky

harsha_123427-Jul-06 21:06

27-Jul-06 21:06

i will give you class definition

class CMyRichEdit : public CRichEditCtrl
{
// Construction
public:
CMyRichEdit();

// Attributes
public:

// Operations
public:

// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CMyRichEdit)
//}}AFX_VIRTUAL

// Implementation
public:
virtual ~CMyRichEdit();

// Generated message map functions
protected:
//{{AFX_MSG(CMyRichEdit)
afx_msg void OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags);
afx_msg BOOL OnMouseWheel(UINT nFlags, short zDelta, CPoint pt);
afx_msg void OnChar(UINT nChar, UINT nRepCnt, UINT nFlags);
afx_msg void OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags);
afx_msg void OnChange();
afx_msg void OnMouseMove(UINT nFlags, CPoint point);
//}}AFX_MSG

DECLARE_MESSAGE_MAP()
};

void CMyRichEdit::OnMouseMove(UINT nFlags, CPoint point)
{
//int i=CharFromPos(point);// gives error
int i = SendMessage(EM_CHARFROMPOS,0,MAKELPARAM(point.x,point.y));
SetSel (i,i+3);
char *mySel=new char[100];
GetSelText (mySel);
AfxMessageBox(mySel);
delete[] mySel;
CRichEditCtrl::OnMouseMove(nFlags, point);
}

both fails

Hamid_RT27-Jul-06 21:17

27-Jul-06 21:17

I dont have any error with this code

<br />
class CMyRichEdit : public CRichEditCtrl<br />
{<br />
// Construction<br />
public:<br />
CMyRichEdit();<br />
<br />
// Attributes<br />
public:<br />
<br />
// Operations<br />
public:<br />
<br />
// Overrides<br />
// ClassWizard generated virtual function overrides<br />
//{{AFX_VIRTUAL(CMyRichEdit)<br />
//}}AFX_VIRTUAL<br />
<br />
// Implementation<br />
public:<br />
virtual ~CMyRichEdit();<br />
<br />
// Generated message map functions<br />
protected:<br />
//{{AFX_MSG(CMyRichEdit)<br />
afx_msg void OnMouseMove(UINT nFlags, CPoint point);<br />
//}}AFX_MSG<br />
<br />
DECLARE_MESSAGE_MAP()<br />
};<br />

CMyRichEdit::CMyRichEdit()
{
}
CMyRichEdit::~CMyRichEdit()
{
}

BEGIN_MESSAGE_MAP(CMyRichEdit, CRichEditCtrl)
END_MESSAGE_MAP()

void CMyRichEdit::OnMouseMove(UINT nFlags, CPoint point) 
{
int i=CharFromPos(point);// gives error
i = SendMessage(EM_CHARFROMPOS,0,MAKELPARAM(point.x,point.y));
SetSel (i,i+3);
char *mySel=new char[100];
GetSelText (mySel);
AfxMessageBox(mySel);
delete[] mySel;
CRichEditCtrl::OnMouseMove(nFlags, point);
}

WhiteSky

harsha_123427-Jul-06 21:23

27-Jul-06 21:23

i am getting error compile time error

i am using visual studio 6.0
deriving from CRichEditCtrl and getting the error.

but SendMessage is working fine

int index = SendMessage(EM_CHARFROMPOS,0,LPARAM(&point));
here i am getting the index

Why like this

Hamid_RT27-Jul-06 21:30

27-Jul-06 21:30

I dont have VS6 i use VS2003 and its working.

WhiteSky

_AnsHUMAN_ 28-Jul-06 0:20

_AnsHUMAN_

28-Jul-06 0:20

harsha_1234 wrote:
Why like this

IMHO,
When we have do this on .NET platform(VC7.0) we use the RichEditControl2.0 and when using VS6.0 RichEditControl.
CharFromPos() is defined for RichEditControl2.0 and not for RichEditControl.

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

harsha_123427-Jul-06 20:59

How to do video streaming wiht C++

27-Jul-06 20:59

no actually i am handling the mouse move message

and in that i get the point.

so i am trying the API.

why do i will need subclassing in this scenario?

Thanks
Harshal

huutribk200127-Jul-06 20:06

huutribk2001

27-Jul-06 20:06

Hi,
I need to write the program that can streaming the frame buffers over network and play again when received at client program.

in Java we hav RTP (Real-Time Transport Protocol) for doing real time streaming and JMF for playing.

But in C++ I don't know how we do a real time streaming video.

Please help me!

Thank in advance!

Re: How to do video streaming wiht C++

Jonathan [Darka]27-Jul-06 23:34

Jonathan [Darka]

27-Jul-06 23:34

You can use RTP in C++ although you will have to write it yourself or find a free or open source library to do it for you.

Darka [Xanya]

"When you're taught to love everyone, to love your enemies, then what value does that place on love?"

Win32 API tp get the day of the week

kk_mfc27-Jul-06 19:57

kk_mfc

27-Jul-06 19:57

Guys,

Is there any win32api to get the day of the week.
I had gone thru some date api's which sppeks abt the month,date and time.

I need to check the system date for a particular day of the week.
like if the day of week is satuarday /sunday a particular process need to be run to make sure that no one will be able to log into the system.

Thanks,

kk_mfc

Parthi_Appu27-Jul-06 20:05

Parthi_Appu

27-Jul-06 20:05

kk_mfc wrote:
I need to check the system date for a particular day of the week.
like if the day of week is satuarday /sunday

Use GetSystemTime(..) as below,

SYSTEMTIME SytemTime;
GetSystemTime(&SystemTime);
SystemTime.wDayOfWeek will slovw your problem...

Refer here for more details about SYSTEMTIME structure[^]

Do your Duty and Don't expect the Result

Steve Echols27-Jul-06 20:07

Steve Echols

27-Jul-06 20:07

There's a plethora of ways:

struct tm now;<br />
localtime( &now );<br />
look at now.tm_wday

SYSTEMTIME st;<br />
GetSystemTime( &st );<br />
look at st.wDayOfWeek

To name a few.

- S
50 cups of coffee and you know it's on!

kk_mfc27-Jul-06 20:22

kk_mfc

27-Jul-06 20:22

Thanka guys.....

kk_mfc

Hamid_RT27-Jul-06 20:58