C / C++ / MFC

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 [modified]

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

ROWALI19-Jun-06 1:58

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

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[^]

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

ROWALI19-Jun-06 2:18

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?

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 | :~

ROWALI19-Jun-06 2:05

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

NiceNaidu19-Jun-06 1:45

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."

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

NiceNaidu19-Jun-06 2:05

19-Jun-06 2:05

Yes .u r right.
U will get the time difference in milli seconds.
Divide the difference with 1000 to get Seconds.

Thanks for the correction Naveen.

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

Viorel.19-Jun-06 1:58

Viorel.

19-Jun-06 1:58

In MFC, use subtract operator and CTimeSpan class:

CTime time1 = CTime::GetCurrentTime();
::Sleep(3000);
CTime time2 = CTime::GetCurrentTime();
CTimeSpan diff = time2 - time1;
LONG seconds = diff.GetTotalSeconds();

Note the usage of CTime::GetCurrentTime static function.

random selection up to 65000 numbers

David Crow19-Jun-06 2:37

David Crow

19-Jun-06 2:37

marcoslav wrote:
t1.GetCurrentTime();

Wrong. Use this instead:

t1 = CTime::GetCurrentTime();

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

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

johnalek19-Jun-06 1:31

johnalek

19-Jun-06 1:31

here i have project in that t require to select numbers radomely up to 65000.

#sankar#

NiceNaidu19-Jun-06 1:40

19-Jun-06 1:40

If u want numbers between MIN to MAX,

Use

rand() % (MAX- MIN+ 1) + MIN ;

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

Cedric Moonen19-Jun-06 2:04

Cedric Moonen

19-Jun-06 2:04

rand is limited to RAND_MAX value which is 32767, so with your technique, it won't work.

Cédric Moonen
Software developer

Charting control

NiceNaidu19-Jun-06 2:07

19-Jun-06 2:07

So, wat is the function should i use ???

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

Cedric Moonen19-Jun-06 2:05

Cedric Moonen

19-Jun-06 2:05

What I did when I wanted to have bigger number, was just adding the results of two rand. So, if it is up to 65000 this technique can work also.

Cédric Moonen
Software developer

Charting control

NiceNaidu19-Jun-06 2:15

19-Jun-06 2:15

Cedric Moonen wrote:
So, if it is up to 65000 this technique can work also.

But this does not ensure unique rand number.

If in one case : rand1 = 12345 , rnad2 = 3; randResult = 12348
If in the other case : rand2 = 12344 , rand2 = 4;randResult = 12348;

there is no guarantee of getting unique numbers.

There should be some other mean for getting rand numbers.

Hope I am not boring u Cerdic.

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

David Crow19-Jun-06 2:39

David Crow

19-Jun-06 2:39

See here.

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

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

NiceNaidu19-Jun-06 2:47

19-Jun-06 2:47

Nice..This is what i am looking for.

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