Microsoft Access and MFC - C / C++ / MFC Discussion Boards

Re: how we can convert CWnd* to HWND

Viorel.19-Jun-06 2:02

Viorel.

19-Jun-06 2:02

Try this:

CWnd * wnd = ....;
HWND hwnd = *wnd;
// or
HWND hwnd = wnd->m_hWnd;

Re: how we can convert CWnd* to HWND

Rage19-Jun-06 3:17

Rage

19-Jun-06 3:17

Viorel. wrote:
HWND hwnd = *wnd

Does this really work ? Never seen it before...

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

Re: how we can convert CWnd* to HWND

Viorel.19-Jun-06 3:27

Viorel.

19-Jun-06 3:27

Rage wrote:
Does this really work?

Yes, it works thanks to a cast operator within CWnd: "operator HWND() const;".

Re: how we can convert CWnd* to HWND

AkiraOne19-Jun-06 2:02

AkiraOne

19-Jun-06 2:02

CWnd* pMyCwnd = new CWnd();

pMyCwnd->m_hWnd // This is the HWND of CWnd class

Too many plans make the health badly!!

Re: how we can convert CWnd* to HWND

Hamid_RT19-Jun-06 2:36

Hamid_RT

19-Jun-06 2:36

you can use if you have a CWnd from m_hWnd
---------------
HWND hWnd=this->m_hWnd;

whitesky

Re: how we can convert CWnd* to HWND

johnalek19-Jun-06 2:21

johnalek

19-Jun-06 2:21

Thanque

#sankar#

Re: how we can convert CWnd* to HWND

Alton Williams19-Jun-06 4:01

Alton Williams

19-Jun-06 4:01

Or you do this

CWnd *pWnd // whatever window your pointing to
HWND MyHandle = (HWND) pWnd

Microsoft Access and MFC

konstantinos_newbie19-Jun-06 1:54

konstantinos_newbie

19-Jun-06 1:54

Dear All,
I am a newbie in Visual C++. I have a project to make. That project needs to communicate with the 5 tables in the Microsoft Access. Each table is a reference for the others.
Each record contains 4 fields. I would like to guide me how I could read that tables.
Until now I try to do it with the MFC . I start a new application with database support. The wizard find in a step which give me the option to choose one of the five tables. I do not know what I am doing wrong and I cannot select all of them. May be I made some mistake may be the MFC does not supported.
I am waiting hearing from you as soon as possible.
Thanks in advance for your time.
Best Regards,
Konstantinos.

konstantinos

Re: Microsoft Access and MFC

kk.tvm19-Jun-06 2:32

kk.tvm

19-Jun-06 2:32

Hi
Please refer CDaoDabase in MSDN Help

regards

KK

Re: Microsoft Access and MFC

konstantinos_newbie19-Jun-06 7:09

konstantinos_newbie

19-Jun-06 7:09

Dear All,
Thanks for your immediately response. I download the demo and I looked into the MSDN. Could you please advice me where I made the mistake? I attach the I have written. I take an error that CDatabase does not exit or undeclared variable.
Thanks for your time.
Best Regards,
Konstantinos.

void CIsup_semi_1Dlg::OnOK()
{
// TODO: Add extra validation here
CDatabase database; //error
CString testing,final_bytes[1000];
int bytes,final_decimal[1000],cbyte,counter=0;
char buffer[50];
unsigned short hbyte,lbyte,all_bytes[1000];
UpdateData(TRUE);m_input.MakeUpper ();
for (register i=0;i<=m_input.GetLength()-1;i++){
hbyte=m_input.GetAt(i);

Re: Microsoft Access and MFC

David Crow19-Jun-06 2:34

David Crow

19-Jun-06 2:34

See if this article helps at all.

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

Re: Microsoft Access and MFC

Hamid_RT19-Jun-06 2:40

Hamid_RT

19-Jun-06 2:40

See Using the CDatabase class to read an Access databases[^] maybe it is some helpful to you

whitesky

Re: Microsoft Access and MFC

konstantinos_newbie19-Jun-06 7:06

konstantinos_newbie

19-Jun-06 7:06

tantDear All,
Thanks for your immediately response. I download the demo and I looked into the MSDN. Could you please advice me where I made the mistake? I attach the I have written. I take an error that CDatabase does not exit or undeclared variable.
Thanks for your time.
Best Regards,
Konstantinos.

void CIsup_semi_1Dlg::OnOK()
{
// TODO: Add extra validation here
CDatabase database;
CString testing,final_bytes[1000];
int bytes,final_decimal[1000],cbyte,counter=0;
char buffer[50];
unsigned short hbyte,lbyte,all_bytes[1000];
UpdateData(TRUE);m_input.MakeUpper ();
for (register i=0;i<=m_input.GetLength()-1;i++){
hbyte=m_input.GetAt(i);

konstantinos

Re: Microsoft Access and MFC

Hamid_RT19-Jun-06 19:20

Hamid_RT

19-Jun-06 19:20

Do you include afxdb.h

whitesky

I guess this is related to NC messages

ROWALI19-Jun-06 1:49

ROWALI

19-Jun-06 1:49

Hello to everyone,

I have developed a SDI MFC application. So what I want is when my mouse is hovering over the application window (any window.. main window, title, views anything), it should work properly, As the mouse moves out of application or windows , it should give some dialog box message that you are out of application area. now if mouse goes out of scope then it should not give so many dialog box messages.. only one is enough so that I wont be wasting time destryoying those messageboxes and go straight to application area. How can this be made?

row

Re: I guess this is related to NC messages

Naveen19-Jun-06 1:55

Naveen

19-Jun-06 1:55

if ur tracking the mouse leaving by checking the NC messages u should have to keep the flags to prevent multiple message box beign displayed...

Else

use TrackMouseEvent API

nave

Re: I guess this is related to NC messages [modified]

ROWALI19-Jun-06 1:58

ROWALI

19-Jun-06 1:58

I think TrackMouseEvent will be tracking only client area of the window .
(also which handler I would be keeping this function)

What I want is if the mouse is moving or clicking or hovering on any portion of the window, its ok, but when it completely goes out of application windows then it should give some kind of notification.

-- modified at 8:04 Monday 19th June, 2006

Re: I guess this is related to NC messages

Nibu babu thomas19-Jun-06 2:05

Nibu babu thomas

19-Jun-06 2:05

Along with what naveen said use WM_MOUSELEAVE.

Nibu thomas
A Developer

Programming tips[^] My site[^]

Re: I guess this is related to NC messages

Naveen19-Jun-06 2:06

Naveen

19-Jun-06 2:06

ROWALI wrote:
I think TrackMouseEvent will be tracking only client area of the window .

no.

check the dwFlags of the TRACKMOUSEEVENT structure.There u can find TME_NONCLIENT

nave

Re: I guess this is related to NC messages

ROWALI19-Jun-06 2:18

ROWALI

19-Jun-06 2:18

Mine is a MFC SDI application.
So where can I keep this function? in Application class's OnIdle even or where?

Re: I guess this is related to NC messages

Anton Mikhalyov19-Jun-06 2:02

Anton Mikhalyov

19-Jun-06 2:02

Use global or class variables to determine if message is already on screen.

I guess I solve your problem? Unsure | :~

Re: I guess this is related to NC messages

ROWALI19-Jun-06 2:05

ROWALI

19-Jun-06 2:05

Can you be more specific?
I dont get it.

time difference

marcoslav19-Jun-06 1:40

marcoslav

19-Jun-06 1:40

How to get time difference in seconds.

CTime t1;
t1.GetCurrentTime();

after some time say after 3 seconds
CTime t2;
t2.GetCurrentTime();

Now I want difference between t2 and t1 in seconds that is 3 seconds;

Marcoslav

Re: time difference

NiceNaidu19-Jun-06 1:45

NiceNaidu

19-Jun-06 1:45

Instead of all the above use

DWORD dwStartTime = GetTickCount();<br />
<br />
//Some Code<br />
<br />
DWORD dwStopTime = GetTickCount();<br />
<br />
Now the Difference ( dwStopTime - dwStartTime )

gives u the required difference in Seconds

Appu..
"If you judge people, you have no time to love them."

Re: time difference

Naveen19-Jun-06 1:50

Naveen

19-Jun-06 1:50

NiceNaiduNow the Difference ( dwStopTime - dwStartTime )

gives u the required difference in Seconds

I think this will return the difference in milli seconds..

nave

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