Is this allowed? GetSafeHwnd question: - C / C++ / MFC Discussion Boards

Auto scroll selected text to the top of a view

Wade H.24-Sep-02 9:37

24-Sep-02 9:37

I am trying to get to get a tree conrol to place the text that it selects at the very top of its corresponding view. I have tried the following code (as is, and with adding/subtracting a value to it) and the result is always that the highlighted text is 1 line above the visible line. Without the LineScroll code, then the selection (highlight) may/may not appear within the visible view, depending upon the direction of the next line.

sSecondPart = sItemData.Right(sItemData.GetLength()-sFirstPart.GetLength());
CMainFrame* pMDIFrame = (CMainFrame*)AfxGetMainWnd();
ASSERT(pMDIFrame);
CChildFrame* pMDIChild = (CChildFrame*)pMDIFrame->MDIGetActive();
ASSERT(pMDIChild);
CEJOrganizerView* pView = (CEJOrganizerView*) pMDIChild->m_wndSplitter.GetPane(0,1);
CRichEditCtrl& rCtrl = pView->GetRichEditCtrl();
int iStart = rCtrl.LineIndex(atoi(sSecondPart));
int iEnd = rCtrl.LineIndex(atoi(sSecondPart)+1);
int iFirstVisible = rCtrl.GetFirstVisibleLine();
// This doesn't work as intended,
rCtrl.LineScroll(rCtrl.LineIndex(atoi(sSecondPart)) - iFirstVisible,0);
rCtrl.SetSel(iStart,iEnd);

if I use: rCtrl.LineScroll(-iFirstVisible,0) then the selected text is always in view, but it is always toward the bottom of the view.

Thanks

Wade Holt

??? Number Formating ???

Nitron24-Sep-02 9:24

Nitron

24-Sep-02 9:24

Ok, so how do I get from:

double x = .0625;
CString s;
s.Format("???",x);

so that s looks like: 6.25000000000000000E-02 Confused | :confused:

Nitron
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Re: ??? Number Formating ???

Jawache24-Sep-02 9:28

Jawache

24-Sep-02 9:28

s.Format("%.16E",x) - i think...

Asim Hussain
e: asim@jawache.net
w: www.jawache.net

Re: ??? Number Formating ???

Tomasz Sowinski24-Sep-02 9:32

Tomasz Sowinski

24-Sep-02 9:32

Use "%.20e" instead of "???" Smile | :)

Tomasz Sowinski -- http://www.shooltz.com

*** Vodka. Connecting people. ***

Re: ??? Number Formating ???

Fazlul Kabir24-Sep-02 9:32

Fazlul Kabir

24-Sep-02 9:32

Try this:

    double fp = .0625;<br />
CString s;<br />
    s.Format( "%e", fp );

// Fazlul

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Re: ??? Number Formating ???

Nick Parker24-Sep-02 9:39

Nick Parker

24-Sep-02 9:39

Nitron wrote:
so that s looks like: 6.25000000000000000E-02

This should do it:

s.Format(_T("%.15e\n"), x);

Nick Parker

The goal of Computer Science is to build something that will last at least until we've finished building it. - Unknown

* * T H A N K S * *

Nitron24-Sep-02 9:53

Nitron

24-Sep-02 9:53

Nitron
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Is this allowed? GetSafeHwnd question:

ns24-Sep-02 8:53

24-Sep-02 8:53

    CProgressBarCZipView *pView = (CProgressBarCZipView *) pChild->GetActiveView();

long hPbHandle = (long)pView->GetSafeHwnd(); //is this the way to get something out of it , like the button below?




CButton *pBar = (CButton*)GetDlgItem(IDC_BUTTON3);

long hPbHandle = (long)pBar->GetSafeHwnd();

Thanks,
ns

Re: Is this allowed? GetSafeHwnd question:

Ravi Bhavnani24-Sep-02 9:01

Ravi Bhavnani

24-Sep-02 9:01

Yes, except that you mistakenly (typo) overwrote hPbHandle.

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Timer

Daniel Ferguson24-Sep-02 8:21

Daniel Ferguson

24-Sep-02 8:21

What is the best way to set up a timer for a process that will take an hour or two?

_____________________
"So in the interests of survival, they trained themselves to be agreeing machines instead of thinking machines. All their minds had to do was to discover what other people were thinking, and then they thought that, too."
Breakfast of Champions, Kurt Vonnegut

Re: Timer

Tomasz Sowinski24-Sep-02 8:30

Tomasz Sowinski

24-Sep-02 8:30

By 'process' you mean Windows process which has some timeout period in your case? Or some general activity?

You have number of options - classic Window timers, waitable timers, WaitForXXX APIs.

Tomasz Sowinski -- http://www.shooltz.com

*** Vodka. Connecting people. ***

Re: Timer

Daniel Ferguson24-Sep-02 8:30

Daniel Ferguson

24-Sep-02 8:30

The user sets the timeout period.

_____________________
"So in the interests of survival, they trained themselves to be agreeing machines instead of thinking machines. All their minds had to do was to discover what other people were thinking, and then they thought that, too."
Breakfast of Champions, Kurt Vonnegut

Re: Timer

Tomasz Sowinski24-Sep-02 8:34

Tomasz Sowinski

24-Sep-02 8:34

The timeout of what? Do you create other process by spawning some executable, or are you performing some activity in your own app?

Tomasz Sowinski -- http://www.shooltz.com

*** Vodka. Connecting people. ***

Re: Timer

Daniel Ferguson24-Sep-02 8:37

Daniel Ferguson

24-Sep-02 8:37

Tomasz Sowinski wrote:
The timeout of what?

When the videotape ends. A friend wants me to write him an app to stop his video capture program after a period of time so he can run the program overnight without filling his harddrive and crashing.

I know how to use SetTimer() for short delays, but I want to know if there is a better solution for long delays (like an hour or more).

_____________________
"So in the interests of survival, they trained themselves to be agreeing machines instead of thinking machines. All their minds had to do was to discover what other people were thinking, and then they thought that, too."
Breakfast of Champions, Kurt Vonnegut

Re: Timer

Tomasz Sowinski24-Sep-02 8:44

Tomasz Sowinski

24-Sep-02 8:44

I'd use WaitForSingleObject with timeout in this case.

Tomasz Sowinski -- http://www.shooltz.com

*** Vodka. Connecting people. ***

Re: Timer

Daniel Ferguson24-Sep-02 8:45

Daniel Ferguson

24-Sep-02 8:45

Thanks.

_____________________
"So in the interests of survival, they trained themselves to be agreeing machines instead of thinking machines. All their minds had to do was to discover what other people were thinking, and then they thought that, too."
Breakfast of Champions, Kurt Vonnegut

How to disable WinKey, Ctrl+Alt+Del ...

Wizard_0124-Sep-02 7:24

Wizard_01

24-Sep-02 7:24

How can I disable WinKey and another system shortcuts ?

Thanx.

LB

Re: How to disable WinKey, Ctrl+Alt+Del ...

jmkhael24-Sep-02 7:39

jmkhael

24-Sep-02 7:39

rewrite the gina.dll

Papa
Murex Co.

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: How to disable WinKey, Ctrl+Alt+Del ...

jmkhael24-Sep-02 7:50

jmkhael

24-Sep-02 7:50

To disable WinKey i found but didnt tried it!
http://is-it-true.org/nt/registry/rtips92.shtml

Papa
Murex Co.

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: How to disable WinKey, Ctrl+Alt+Del ...

Wizard_0124-Sep-02 8:04

Wizard_01

24-Sep-02 8:04

change registry ? BTW: I havent following item in register Frown | :(

Hive: HKEY_CURRENT_USER
Key:Software\Microsoft\Windows\CurrentVersion\Policies\System
Name: DisableLockWorkstation
Type: REG_DWORD
Value: 1 disable

I found this but its not for Win2K and later :/
SystemParametersInfo(SPI_SCREENSAVERRUNNING, true, NULL, 0);

Thakx

Wiizi Smile | :)

Re: How to disable WinKey, Ctrl+Alt+Del ...

jmkhael24-Sep-02 8:03

jmkhael

24-Sep-02 8:03

if u do like the page says ull be creating this key Smile | :)

Papa
Murex Co.

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: How to disable WinKey, Ctrl+Alt+Del ...

Tomasz Sowinski24-Sep-02 8:05

Tomasz Sowinski

24-Sep-02 8:05

http://msdn.microsoft.com/msdnmag/issues/02/09/CQA/default.aspx[^]

Tomasz Sowinski -- http://www.shooltz.com

*** Vodka. Connecting people. ***

Another (different) SendMessage question.

ns24-Sep-02 7:02

24-Sep-02 7:02

Heres the VC client calling the function in a DlL:

	CButton * pBar = (CButton*)GetDlgItem(IDC_BUTTONRECV);
	long hPbHandle = (long)pBar->GetSafeHwnd();


	_CRemoteCall p;
	
	p.CreateDispatch("DllwithForm.Class1");

//	AfxMessageBox("pbar");

 	p.CheckingPB(hPbHandle);

	p.ReleaseDispatch();

In the dll, the message is being sent as:

SendMessage(PbarHandle, WM_COMMAND, 0, 0)

This is supposed to trigger of my (test) button handler. But it doesnt....What might be the problem here?

Thanks,
ns

Re: Another (different) SendMessage question.

Tomasz Sowinski24-Sep-02 7:17

Tomasz Sowinski

24-Sep-02 7:17

The wParam (argument which goes right after WM_COMMAND) in the SendMessage call should contain identifier of your button (probably IDC_BUTTONRECV).

Tomasz Sowinski -- http://www.shooltz.com

*** Vodka. Connecting people. ***

Re: Another (different) SendMessage question.

ns24-Sep-02 7:24

24-Sep-02 7:24

Its the API I am calling in my dll (its a VB dll).

LRESULT SendMessage(
  HWND hWnd,      // handle to destination window
  UINT Msg,       // message
  WPARAM wParam,  // first message parameter
  LPARAM lParam   // second message parameter
);

so I think my order is okay. MFC's sendmessage takes the command first...so I'm sorry I wasnt clear that I was using the raw API...

Thanks,
ns

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