C / C++ / MFC

5-Mar-03 5:06

Hello all,
I want to test the state of mouse buttons in inside MouseMove handler .
I suppose i must work with Wparam or Lparam Confused | :confused:

but how ?
thank you in adavance

User 98855-Mar-03 6:51

User 9885

5-Mar-03 6:51

afx_msg void OnMouseMove( UINT nFlags, CPoint point );

is the prototype of the MouseMove handler in CWnd (MFC)

In this:

nFlags
Indicates whether various virtual keys are down. This parameter can be any combination of the following values:
MK_CONTROL Set if the CTRL key is down.
MK_LBUTTON Set if the left mouse button is down.
MK_MBUTTON Set if the middle mouse button is down.
MK_RBUTTON Set if the right mouse button is down.
MK_SHIFT Set if the SHIFT key is down.

if (nFlags & MK_LBUTTON)
{
// Left mouse button is down
}

if (nFlags & MK_MBUTTON)
{
// Middle mouse button is down
}

My article on a reference-counted smart pointer that supports polymorphic objects and raw pointers

modified 29-Aug-18 21:01pm.

jeremysay5-Mar-03 7:51

5-Mar-03 7:51

O yes ! thx you !
it works great !

Joel Lucsy5-Mar-03 7:14

Joel Lucsy

5-Mar-03 7:14

if (wParam & MK_LBUTTON) //left button down
if (wParam & MK_RBUTTON) //right button down

Joel Lucsy

jeremysay5-Mar-03 7:51

5-Mar-03 7:51

Thx ! your solution is grat for PreTranslateMessage !
Thx again

jeremysay5-Mar-03 8:47

Pop up text upon a static control?

5-Mar-03 8:47

Arf i have a problem ;(
Your solution works great when the view is derived from CView, but when is derived from CListCtrl it doesn't work ! Confused | :confused:

You know why ?
Thx

DDEML

Anthony98875-Mar-03 4:58

Anthony9887

5-Mar-03 4:58

I'm new to this. I want to be able to send a command from the client application to the server application. For example to call the one of the servers dialog box or menu item. Which calls do I need to do achieve this.

Thanks

mickelthepickle5-Mar-03 4:54

mickelthepickle

5-Mar-03 4:54

Ok,

I don't know the official word for doing this, but in windows, if you have a box with text and the text spans further than what the box can display (i.e. on the taskbar at the bottom of the screen), if you hold the mouse over the box, a yellow box pops up displaying the full text. How would I implement this into a dialog control that i have? I have an input form with several static text boxes, which sometimes get overloaded because I fill them with more text than what the user can normally see.

Thanks,
Mike Mathers

Re: Pop up text upon a static control?

Roger Allen5-Mar-03 5:10

Roger Allen

5-Mar-03 5:10

Its called a tooltip. There are several classes available her on CP.

Note that for a static text control to have a tooltip, it must have a unique ID and have the Notify style set in its resources.

Roger Allen
Sonork 100.10016

Were you different as a kid? Did you ever say "Ooohhh, shiny red" even once? - Paul Watson 11-February-2003

Re: Pop up text upon a static control?

mickelthepickle5-Mar-03 5:21

mickelthepickle

5-Mar-03 5:21

Thank you for the quick response. I was looking more to do this myself if possible, I've been reading up on CToolTipCtrl, and I've set the Notify Styles on all the static controls that need this. But what is the next step, do I include a CToolTipCtrl object in my dialog class? I'm a little stumped and MSDN is not helping.

Re: Pop up text upon a static control?

Roger Allen5-Mar-03 6:17

Roger Allen

5-Mar-03 6:17

I wouldn;t bother with the tooltip control. If your doing this on a dialog, follow these steps (which work on form views etc as well).

1. Call EnableToolTips(TRUE) in the OnInit dialog.
2. Add the function prototype

afx_msg BOOL OnToolTipNotify(UINT id, NMHDR *pNMHDR, LRESULT * pResult);

3. Add this MESSAGE_MAP entry

ON_NOTIFY_EX(TTN_NEEDTEXT, 0, OnToolTipNotify)

4. Add your funtion

BOOL CYourDialog::OnToolTipNotify(UINT /*id*/, NMHDR *pNMHDR, LRESULT * /*pResult*/)
{
    TOOLTIPTEXT *pTTT = (TOOLTIPTEXT *)pNMHDR;
	static char tooltiptext[256] = "";
	
    if (pTTT->uFlags & TTF_IDISHWND)
    {
        // idFrom is actually the HWND of the tool
        UINT nID = ::GetDlgCtrlID((HWND)pNMHDR->idFrom);
		
		pTTT->lpszText = NULL;
		
		switch (nID)
		{
// one entry for every control that needs a tooltip
		case IDC_TITLE :
			pTTT->lpszText = "Tray setup title";
			break;
		}
		
		if (pTTT->lpszText != NULL)
		{
			return(TRUE);
		}
	}
	
	return(FALSE);
}

Then just write your tooltips text for each control.

Roger Allen
Sonork 100.10016

Were you different as a kid? Did you ever say "Ooohhh, shiny red" even once? - Paul Watson 11-February-2003

Need reliable start of line CharIndex

brianwelsch5-Mar-03 4:44

brianwelsch

5-Mar-03 4:44

I'm writing an editor, and I want to have current Line and Column displayed.

Line is working fine, but column doesn't always work right.

if I try to get the CharIndex of the beginning of the line this way,

long int nStartChar = SendMessage(EM_LINEINDEX,-1,0);

I eventually hit a problem after 88x lines, where (nCurrChar - nStartChar) is 65xxx

if I try to get the CharIndex of the beginning of the line this way,

long int nStartChar = LOWORD(pEdit->CharFromPos(ptLineBegin));

where ptLineBegin is based on GetCaretPos() and x forced to 0, then the column is based on the left of the window, and not the actual beginning of the line.

Can anyone give me some help, please? Thanks!

BW
"We get general information and specific information, but none of the specific information talks about time, place or methods or means..."
- Tom Ridge - US Secretary of Homeland Security

Re: Need reliable start of line CharIndex - DONE

brianwelsch10-Mar-03 7:27

brianwelsch

10-Mar-03 7:27

Turns out it wasn't the start of line I had issues with, it was getting a reliable Curr CharIndex.

I got it this way.

<br />
DWORD dwStart, dwEnd;<br />
pEdit->SendMessage(EM_GETSEL,(WPARAM)(&dwStart), (LPARAM)(&dwEnd));<br />
<br />
return dwStart;<br />

BW
"We get general information and specific information, but none of the specific information talks about time, place or methods or means..."
- Tom Ridge - US Secretary of Homeland Security

Stop message processing of a process

Dominik Reichl5-Mar-03 4:29

Dominik Reichl

5-Mar-03 4:29

Hello

I am looking for function to stop and continue the message processing of processes.

Is there a function like StopMessageProcessing(...) to stop
a process processing its messages? This does not mean to kill its messages in its message queue, it means just to stop the processing for a certain time I want to define.

Confused | :confused:

-Dominik

Re: Stop message processing of a process

jmkhael5-Mar-03 7:18

jmkhael

5-Mar-03 7:18

Check SuspendThread and ResumeThread
an article
http://www.codeproject.com/threads/pausep.asp

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: Stop message processing of a process

Joel Lucsy5-Mar-03 7:18

Joel Lucsy

5-Mar-03 7:18

You might be able to use SuspendThread and then ResumeThread, but I'm not sure if you can do this cross-process. Note that you might have to suspend all the threads of the process, not just the base one.
The only other alternative is to somehow pass a particular message to the app that you have a hook into. When the message is received you would do a sleep or something that doesn't return control till you need it to.

Joel Lucsy

ActiveX control

Dennis L5-Mar-03 4:15

Dennis L

5-Mar-03 4:15

Hi!

I have inserted an activex control in my Win32 API application, and when i try to compile it, my application doesn't have any errors and it's not visible....

What's wrong?....

Re: ActiveX control

Cedric Moonen5-Mar-03 21:33

Cedric Moonen

5-Mar-03 21:33

Hi !

Are you sure your ActiveX is well registered and installed (not only added to the C++ compiler)?
I had the same problem when I ran my application on a computer wher the ActiveX was not installed.

Hope it helps!

What is VC++ 6 equivalent of VB's DoEvents

Mahesh Perumal4-Mar-03 17:53

Mahesh Perumal

4-Mar-03 17:53

Is there anything equivalent to DoEvents of VB in VC++ 6???

Mahesh

Nick Parker4-Mar-03 19:06

Nick Parker

4-Mar-03 19:06

Mahesh Perumal wrote:
Is there anything equivalent to DoEvents of VB in VC++ 6???

I would assume it's along the lines of SendMessage[^].

-Nick Parker

Steve S5-Mar-03 5:46

Steve S

5-Mar-03 5:46

More along the lines of a non-blocking message loop;

while (::PeekMessage(&msg,NULL,0,0,PM_NOREMOVE))
{
AfxGetThread()->PumpMessage();
}

or similar

Steve S
[This signature space available for rent]

Alvaro Mendez5-Mar-03 8:57

Alvaro Mendez

5-Mar-03 8:57

It doesn't exist, but you can certainly write it:

void DoEvents()
{
	for (MSG msg; ::PeekMessage(&msg, NULL, 0, 0, PM_REMOVE); )
	{
		::TranslateMessage(&msg);
		::DispatchMessage(&msg);
	}
}

Regards,
Alvaro

Quitters never win. Winners never quit. But those who never win and never quit are idiots. -- despair.com