C / C++ / MFC

Is the parent window handle correct?

24-Sep-02 11:04

CListBox::Dir or LB_DIR.

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

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ns24-Sep-02 10:21

24-Sep-02 10:21

Because it doesnt work! I am suspecting that maybe I dont have the right parent for a control on a CFormView form.

THe SendMessage API is being called with handles obtained from:

       CMDIFrameWnd *pFrame =
         (CMDIFrameWnd*)AfxGetApp()->m_pMainWnd;


     CMDIChildWnd *pChild =
    (CMDIChildWnd *) pFrame->GetActiveFrame();

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

long parentHandle = (long)pView->GetSafeHwnd();

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

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

_CllRemoteCall p;

p.CreateDispatch("DllwithForm.Class1");

   p.TestButton(hPbHandle,parentHandle);

This call suposedly causes the SendMessage to execute (or not !)

SendMessage(parentHAndle, WM_COMMAND, 0, buttonHandle)

but I'm still doing something wrong.
Any ideas ?

Thanks,
ns

Tomasz Sowinski24-Sep-02 10:31

24-Sep-02 10:31

wParam (3rd arg) in SendMessage call should be the button ID, not the button handle. It should look more or less like this:

SendMessage(parentHandle, WM_COMMAND, IDC_BUTTON3, 0);

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

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ns24-Sep-02 10:43

24-Sep-02 10:43

It didnt like the ordering of the parameters and crashed. I found from MSDN:

WM_COMMAND
The WM_COMMAND message is sent when the user selects a command item from a menu, when a control sends a notification message to its parent window, or when an accelerator keystroke is translated. 

A window receives this message through its WindowProc function. 

LRESULT CALLBACK WindowProc(
  HWND hwnd,       // handle to window
  WM_COMMAND,      // the message to send
  WPARAM wParam,   // notification code and identifier
  LPARAM lParam    // handle to control (HWND)
);

so I did

SendMessage(parentHAndle, WM_COMMAND, 0, buttonHandle)

Doesnt crash now, but alas my poor lowly button remains untriggered(I havent graduated to your idea of custom messages yet Smile | :)

)
I fear its maybe time to look into shared memory, which is not going to be easy.
If only the sendmessage worked...BTW I also tried sending in the ID of the button instead of the handle so that the SendMessage could use it, but still not.
You have really put a lot of time into my problem and I want to say that I appreciate it very much.

Thanks,
ns

Tomasz Sowinski24-Sep-02 10:49

24-Sep-02 10:49

Try with both ID and handle:

SendMessage(parentHandle, WM_COMMAND, ID_BUTTON, buttonHandle);

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

*** Vodka. Connecting people. ***

nope...

ns24-Sep-02 11:06

24-Sep-02 11:06

That made it very unhappy....crashed grandly. Cry | :((

Thanks,
ns

Auto scroll selected text to the top of a view

Chris Richardson24-Sep-02 11:17

Chris Richardson

24-Sep-02 11:17

Try this:

<br />
SendMessage(parentHandle, WM_COMMAND, MAKELONG( IDC_BUTTON3, BN_CLICKED ), buttonHandle );<br />

Chris Richardson

AD Schema changes...

Ray Cassick24-Sep-02 10:02

Ray Cassick

24-Sep-02 10:02

Does anyone here have an example of a User Interface library for AD Schema modifications?

I am working on some additional attributes for a user and need to place a new tab in the properties window (like Exchange does) so the admin has a way to set the properties.

Wade H.24-Sep-02 9:37

Wade H.

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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Jawache24-Sep-02 9:28

Jawache

24-Sep-02 9:28

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

Asim Hussain
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w: www.jawache.net

Tomasz Sowinski24-Sep-02 9:32

24-Sep-02 9:32

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

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

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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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Is this allowed? GetSafeHwnd question:

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
_________________________________________--
message sent on 100% recycled electrons.

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

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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

Tomasz Sowinski24-Sep-02 8:30

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

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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

Tomasz Sowinski24-Sep-02 8:34

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

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