C / C++ / MFC Discussion Boards

Re: Changing cursor

Fredrik Skog18-Aug-03 0:40

Fredrik Skog

18-Aug-03 0:40

If you want the hourglass cursor displayed during lenghty operations:

CWaitCursor wait;
DoSomethingThatTakesTime();

Cheers,
Fredrik

"Felix qui potuit rerum cognoscere causas."

Re: Changing cursor

Cedric Moonen18-Aug-03 1:05

Cedric Moonen

18-Aug-03 1:05

Thanks but it's not the hourglass cursor. In fact I click on a button on the toolbar (the zoom button) and my cursor changes into a zoom. When the user has selected the item to zoom, the cursor came back to an arrow.

Re: Changing cursor

Iain Clarke, Warrior Programmer18-Aug-03 1:05

Iain Clarke, Warrior Programmer

18-Aug-03 1:05

The docs are right. You need to set the cursor for the window class to NULL. You also need to handle
the WM_SETCURSOR message too. This message is called by the OS when the mouse is moved.

If you want to immediately change the cursor, you use SetCursor as you have already seen.

So its a combination of all three things.

Iain.

Re: Changing cursor

Cedric Moonen18-Aug-03 1:14

Cedric Moonen

18-Aug-03 1:14

Iain Clarke wrote:
The docs are right. You need to set the cursor for the window class to NULL

Ok right, ........ but how can I achieve that ?? Smile | :)

This was my question Poke tongue | ;-P

Re: Changing cursor

Iain Clarke, Warrior Programmer18-Aug-03 1:28

Iain Clarke, Warrior Programmer

18-Aug-03 1:28

char __iainclass [] = "IainView";

BOOL CIainView::PreCreateWindow( CREATESTRUCT& cs )
{
	WNDCLASS	wc;
	wc.style	= CS_DBLCLKS | CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
	wc.lpfnWndProc	= ::DefWindowProc;
	wc.cbClsExtra	= 0;
	wc.cbWndExtra	= 0;
	wc.hInstance	= cs.hInstance;
	wc.hIcon	= 0;
	wc.hCursor	= 0;
	wc.hbrBackground= NULL;
	wc.lpszMenuName	= NULL;
	wc.lpszClassName= __iainclass;

	AfxRegisterClass (&wc);

	cs.lpszClass = __iainclass;

	return	TRUE;
}

That's for MFC. To set wc.hCursor=NULL is even easier in SDK, as you have to explicitly create a class
in the first place.

Iain.

Re: Changing cursor

Cedric Moonen18-Aug-03 1:48

Cedric Moonen

18-Aug-03 1:48

Ok thanks!

I'll try it!

Re: Changing cursor

Rage18-Aug-03 5:15

Rage

18-Aug-03 5:15

Handle WM_SETCURSOR, if you do it with the MFC classWizard, it will bring up a OnSetCursor(). Load your cursor in this function, and DO NOT CALL THE BASE CLASS, so put CDialog::OnSetCursor(..bla...) at the end of the function in comments.

~RaGE();

Is there timer immediately can be killed in ATL ?

vgrigor17-Aug-03 23:12

vgrigor

17-Aug-03 23:12

In control timer is organised as following.
according MSDN ATLButton:

Contol need be killed (UNLOAD) as fast as possible,
but timer usualy waits until last period finished:

parallel thread is slept for timer period and that called need method:

[code]
//interface must marchalled between threads

if (m_pStream)
hRes = CoGetInterfaceAndReleaseStream(m_pStream, *piid, (void**)&m_spT);

while(m_bTimerOn)
{
Sleep(m_dwTimerInterval);
if (!m_bTimerOn)
break;
//timing call
m_spT->_OnTimer();
}
[code]

Is there more fast or asyncronious methods of killing timer?

in that case if I call terminateThread - error happens.

Why so?

Re: Is there timer immediately can be killed in ATL ?

Alexander ^M.,18-Aug-03 2:02

Alexander ^M.,

18-Aug-03 2:02

dont use sleep for your time... use SetTimer and KillTimer

Don't try it, just do it! Wink | ;-)

Re: Is there timer immediately can be killed in ATL ?

John M. Drescher18-Aug-03 2:51

John M. Drescher

18-Aug-03 2:51

As Alexander said do not use Sleep() as it will not do as you expect. See the following article: http://www.codeproject.com/system/simpletime.asp?target=sleep%7Ctimer[^]

John

Re: Is there timer immediately can be killed in ATL ?

vgrigor18-Aug-03 3:25

vgrigor

18-Aug-03 3:25

My ATL ActiveX is windowless(!),
no window with timer - except need to create additional for that.
(made on the base MSDN ATlButton)

I will read artilce -thanks you.

But have any timer code for not Window?

Re: Is there timer immediately can be killed in ATL ?

vgrigor18-Aug-03 4:03

vgrigor

18-Aug-03 4:03

With what event to syncronize SuspendThread();?

How to set time interval ?

Problems closing the dialog box

Deepak Samuel17-Aug-03 22:24

Deepak Samuel

17-Aug-03 22:24

I have a dialog box which has several buttons and when I click one he button the following code is executed:

void CtimDlg::OnOk2()
{
RunUtility("tricrrx.rtss"); // runs my program called tricrrx.rtss

}

Works perfectly ok....
But,
When I close the dialog box, by clicking the [x] in the dialog box, the dialog box doesnt close, but instead works as if the above button (Ok2) is clicked i.e., runs my program once again..
what should do to overcome this?

Thanks,

Deepak Samuel

Re: Problems closing the dialog box

RChin17-Aug-03 22:56

RChin

17-Aug-03 22:56

You've got your ::OnOk2() function mapped to the IDCANCEL dialog id.
This gets called when the user clicks the default Cancel button, or the Close Icon in the top right corner of your dialog.

The quickest solution I can see is to remove this function (using classwizard), then try again.

"..Even my comments have bugs!"

Inspired by Toni78

range container

peterchen17-Aug-03 21:56

peterchen

17-Aug-03 21:56

Hi,

I have a set of ranges, and individual values.
e.g. [0,100], 202, 203, 205, 230, [235, 10000] ...

I need a container to store them, with as-quick-as-possible test if a certain value is contained in the list (e.g. 42 would be in, 203 would be in, 206 would be out)

any ideas which I could (ab)use?

"Der Geist des Kriegers ist erwacht / Ich hab die Macht" StS

sighist | Agile Programming | doxygen

Re: range container

Alexander ^M.,18-Aug-03 2:04

Alexander ^M.,

18-Aug-03 2:04

why not using a STL list?

Don't try it, just do it! Wink | ;-)

SOS!!!!

jimsleon17-Aug-03 21:31

jimsleon

17-Aug-03 21:31

How can I get the main window of a process when I have get the process's handle or process ID in windows 2000?

Leon

Re: SOS!!!!

HPSI18-Aug-03 2:37

HPSI

18-Aug-03 2:37

Take a look at Paul DiLascia's CMainWindowIterator class.

HPS HwndSpy - GUI developer's aid to visually
locate and inspect windows. For the month of August
only, use coupon code CP-81239 for 30% off.

Re: SOS!!!!

parths18-Aug-03 17:50

parths

18-Aug-03 17:50

EnumWindows - It give you all the windows for the process

"It was when I found out I could make mistakes that I knew I was on to something."
-Ornette Coleman

%ws formatting option

Tarundeep Singh Kalra17-Aug-03 20:32

Tarundeep Singh Kalra

17-Aug-03 20:32

hi all can anybosy throw some light in %ws formatting option in printf.
TIA
tarun

Blue Pill or Red Pill........??

Re: %ws formatting option

Michael Dunn17-Aug-03 21:03

Michael Dunn

17-Aug-03 21:03

There is no such thing, AFAIK neither %w nor %ws are standard replacement markers. Are you thinking maybe of %ls? That inserts a Unicode string, zero terminated.

--Mike--
Ericahist | Homepage | RightClick-Encrypt | 1ClickPicGrabber
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Re: %ws formatting option

Tarundeep Singh Kalra17-Aug-03 22:47

Tarundeep Singh Kalra

17-Aug-03 22:47

hi,
i went across this printf formatting options and on some googling i came across that it is ANSI C formatting options which specifies the width of string also.

i have seen some MS samples which are displaying this output format.

even i was able to do this using sprintf();
but the probelm is i do not know the details of this thing.
regards
tarun

Blue Pill or Red Pill........??

Re: %ws formatting option

David Crow18-Aug-03 3:00

David Crow

18-Aug-03 3:00

It doesn't exist as far as I can tell:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_crt_format_specification_fields_.2d_.printf_and_wprintf_functions.asp

File exists API ??

rohit.dhamija17-Aug-03 19:47

rohit.dhamija

17-Aug-03 19:47

Dear All,

I am developing an application in MFC VC++ Version 6.0 for Windows 2000.

I want to check existence of a file in my application eg. i want to check whether c:\rohit\abc.txt exists of not

Can any body please tell me the API for this ?

Feel free to ask any further queries in this regards,

Thanks
Rohit Dhamija

Re: File exists API ??

MaxVC17-Aug-03 20:02

MaxVC

17-Aug-03 20:02

You can do it via FindFirstFile
Specify in the first parameter file name you need to verify
You will get as result INVALID_HANDLE_VALUE if file does not exist
Otherwise, you will get a valid handle & you must close it with FindClose function

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.