Re: How to Use IntersectRect(...) API - C / C++ / MFC Discussion Boards

ThatsAlok6-Jul-06 22:02

6-Jul-06 22:02

thathvamsi wrote:
Can you give me some code snippet that would help me.
For every x secs, there has to be a packet sent to the microcontroller.

yeap, here are some article dealing with same:-
http://www.codeproject.com/system/simpletime.asp[^]
http://www.codeproject.com/system/timers_intro.asp[^]

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Re: packet sent at regular intervals

Hamid_RT6-Jul-06 22:05

Hamid_RT

6-Jul-06 22:05

From the MSDN:

<br />
CWnd::OnTimer<br />
The framework calls this member function after each interval specified in the SetTimer member function used to install a timer.<br />

whitesky

Re: packet sent at regular intervals

earl7-Jul-06 6:24

earl

7-Jul-06 6:24

CreateThread
Sleep

How to Use IntersectRect(...) API

Uday Janaswamy6-Jul-06 19:26

Uday Janaswamy

6-Jul-06 19:26

Hi all,

I am drawing a Circle in mouse clicked event in CDialog. and when i move the mouse if the mouse entered inside the Circle the Mouse Icon must change to CROSS ie IDC_CROSS or else it should retain its original behavior (ie) IDC_ARROW.

I want to detect that wheather the mouse is inside the Circle or Not to change my Mouse Pointer.

Please help me out. Give a small program using IntersectRect(...) API.

uday.

Re: How to Use IntersectRect(...) API

PJ Arends6-Jul-06 19:34

PJ Arends

6-Jul-06 19:34

I would use a region (CRgn class) that corresponds with the circle and use CRgn::PtInRegion() to check if the mouse is in the circle.

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Re: How to Use IntersectRect(...) API

Uday Janaswamy6-Jul-06 19:39

Uday Janaswamy

6-Jul-06 19:39

Hi,

Please give a bit of code so that i can use it. its very urgent.

thanks and regards

uday.

Re: How to Use IntersectRect(...) API [modified]

Stephen Hewitt6-Jul-06 19:54

Stephen Hewitt

6-Jul-06 19:54

Use highscool math (Pythagoras' Theorem).
i.e.

bool IsPointInCircle(int cx, int cy, int cr, int x, int y)
{
   int xp = x-cx;
   int yp = y-cy;
   return (xp*xp+yp*yp)<=(cr*cr);
}

cx = circle center x.
cx = circle center y.
cr = circle radius.
x = x coordinate of point to test.
y = y coordinate of point to test.

Steve

-- modified at 2:02 Friday 7th July, 2006

Re: How to Use IntersectRect(...) API

Uday Janaswamy6-Jul-06 20:16

Uday Janaswamy

6-Jul-06 20:16

Hi steve,

Any method like CRect.IntersectRect(...) usage is used please let me know any usage.

uday.

Re: How to Use IntersectRect(...) API

Steve Echols6-Jul-06 21:19

Steve Echols

6-Jul-06 21:19

As mentioned above you can use the CRgn class:

CRgn rgn;<br />
rgn.CreateEllipticRgn(left, top, right, bottom);<br />
<br />
if (rgn.PtInRegion(point))<br />
{<br />
   ...<br />
}

- S
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Reinitialize the array values

Anu_Bala6-Jul-06 19:22

Anu_Bala

6-Jul-06 19:22

I have declared an array of size 200 for a structure with character as well as integer members.I want to know how to reinitialize the array values to NULL in such a way that the old values should get deleted.
Eg:Group grp[200]; where Group is a structure.

Re: Reinitialize the array values

David Crow7-Jul-06 3:41

David Crow

7-Jul-06 3:41

Can't you just use memset() or ZeroMemory()?

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To copy all project to another new

mikobi6-Jul-06 19:09

mikobi

6-Jul-06 19:09

I need to copy all content of one projevct to another so to modifier what i need.

Re: To copy all project to another new

Anilkumar K V6-Jul-06 20:05

Anilkumar K V

6-Jul-06 20:05

Requirement not clear

Re: To copy all project to another new

mikobi6-Jul-06 21:23

mikobi

6-Jul-06 21:23

I create a new project but i want to copy others forms from a old project to the new, what to do

Re: To copy all project to another new

Rajesh R Subramanian6-Jul-06 21:31

Rajesh R Subramanian

6-Jul-06 21:31

Form? Do you mean a dialog? You just want to copy the dialog or the controls in it too, with member variables if any, attached to those and message handlers for those controls and the dialog itself? What is the logic behind your question?

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You have an idea and me too. We exchange those and We have two ideas each.

Re: To copy all project to another new

mikobi6-Jul-06 21:37

mikobi

6-Jul-06 21:37

I need to copy a dialogs with all these codes

Re: To copy all project to another new

Rajesh R Subramanian6-Jul-06 22:15

Rajesh R Subramanian

6-Jul-06 22:15

There is no such copy-paste operation which will perform this task. You will need to redo the thing.

You have an apple and me too. We exchange those and We have an apple each.
You have an idea and me too. We exchange those and We have two ideas each.

Re: To copy all project to another new

huynhnb6-Jul-06 23:26

huynhnb

6-Jul-06 23:26

you create empty prject after that, you add exist project to.
All code, resource will be added.

Huynhnb

.: Your success is also me :.

how we can restrict the dialog

vasusree6-Jul-06 18:57

vasusree

6-Jul-06 18:57

how we can restrict the dialog.
what i mean is when we move the dialog to end of the screen.ok, no problem.if we further move i will move to out of screen.how to avoid that,
thank u in advance,
vasu.

Re: how we can restrict the dialog

Rajesh R Subramanian6-Jul-06 19:05

Rajesh R Subramanian

6-Jul-06 19:05

SendMessage(DM_REPOSITION);

You have an apple and me too. We exchange those and We have an apple each.
You have an idea and me too. We exchange those and We have two ideas each.

Re: how we can restrict the dialog

vasusree6-Jul-06 19:30

vasusree

6-Jul-06 19:30

please tell some examples then i understand easily,
thank u for ur reply,
vasu

Re: how we can restrict the dialog

Rajesh R Subramanian6-Jul-06 19:55

Rajesh R Subramanian

6-Jul-06 19:55

Handle the WM_MOVE message of your dialog. Just add the following line in that function.

SendMessage(DM_REPOSITION);

Does this solve your problem?

You have an apple and me too. We exchange those and We have an apple each.
You have an idea and me too. We exchange those and We have two ideas each.

SetWindowLong

HakunaMatada6-Jul-06 18:46

HakunaMatada

6-Jul-06 18:46

I have Subclassed a Window using the SetWindowLong function. Now, I would like to UnSubclass it. Is there any way to UnSubclass a Window?

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Re: SetWindowLong

Ryan Binns6-Jul-06 19:06

Ryan Binns

6-Jul-06 19:06

Did you use GetWindowLong() to save the previous window procedure? If so, just put the old one back again.

Ryan

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Re: SetWindowLong

Saurabh.Garg6-Jul-06 19:08

Saurabh.Garg

6-Jul-06 19:08

use SetWindowLong with pointer to original window procedure.

-Saurabh

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