C / C++ / MFC

static variable causes link error

6-Mar-06 23:24

ss2006,

i don't know the answer to you problem, but i have an off topic question :
why didn't you just answered this on the same thread instead of starting a new one ?
Sleepy | :zzz:

nripun6-Mar-06 23:19

nripun

6-Mar-06 23:19

I created a class CCamera using Insert->New Class MFC with the base class CView.
I made the constructor and destructor public(they were protected when created).I declared a static int varialble CamCounter in Camera.h. I included Camera.h in a DialogClass and tried to use the static variable CCamera::cameraCount in Dialog Class.
But it gave a link error
error LNK2001: unresolved external symbol "public: static int CCamera::cameraCount"

What could be reason behind this?

toxcct6-Mar-06 23:27

6-Mar-06 23:27

did you #include the file needed ?

BadKarma6-Mar-06 23:33

BadKarma

6-Mar-06 23:33

did you initialize it in the Camera.cpp file like this

int CCamera::cameraCount = 0;

codito ergo sum

nripun6-Mar-06 23:44

nripun

6-Mar-06 23:44

Thank You

problem with highlighting a selected thumbnail in clistctrl

Roger Stoltz6-Mar-06 23:35

Roger Stoltz

6-Mar-06 23:35

Add the following line somewhere at the top of Camera.cpp after #including Camera.h:

static int CCamera::cameraCount = 0;

Hope this helps
--
Roger

It's supposed to be hard, otherwise anybody could do it!

snir_ya6-Mar-06 23:09

snir_ya

6-Mar-06 23:09

Hi,

I using a clistctrl to display a list of thumbnails(that i extract using shell's IExtractImage). All works well but when i select a thumbnail with the mouse the whole thumbnail is masked with a blueish color instead of just highlighting the frame of the thumbnail as it's done in winxp file explorer(thumbnails view).

Does anybody know how to fix it? Help would be highly appriciated!

Thanks a lot!

Re: problem with highlighting a selected thumbnail in clistctrl

Hamid_RT6-Mar-06 23:40

Hamid_RT

6-Mar-06 23:40

if you want to change highlight from ListCtrl you should use NM_CUSTOMDRAW

Re: problem with highlighting a selected thumbnail in clistctrl

snir_ya6-Mar-06 23:46

snir_ya

6-Mar-06 23:46

Thanks for answering.

Can you amplify a little bit on the subject?

Re: problem with highlighting a selected thumbnail in clistctrl

Hamid_RT6-Mar-06 23:52

Hamid_RT

6-Mar-06 23:52

In the codeproject is your answer
Listctrl

Autohide option on dialog boxes

Ganesh_T6-Mar-06 22:51

Ganesh_T

6-Mar-06 22:51

Hello

I have created the dialog based application . ON that dialog I don't want any menubars and captions. i.e I will disable the title bar and systemmenu.

SO I have to set the image to it. The image will be having the title bar and the close button and minimize button on it. So I want to hide the portion of image having the toolbar and when user moves the nouse at that position i want to show it again.

So how would I achieve it.

Regards

Cheers
"Peace of mind through Technology"

toxcct6-Mar-06 22:53

6-Mar-06 22:53

overriding WM_MOUSEMOVE and using CWnd::ShowWindow()

baldha rakesh6-Mar-06 23:09

baldha rakesh

6-Mar-06 23:09

ye we can do that.
I am not getting how to start.

I have set the image now my dialog is not resizing.
I want to hide the portion of toolbar and when mouse come on it again show it.

Bankey Khandelwal
Software Engineer

Gary R. Wheeler7-Mar-06 3:04

Gary R. Wheeler

7-Mar-06 3:04

You will need to handle the WM_NCPAINT messages for your application. The caption bar and buttons are part of the non-client area.

Software Zen: delete this;

Fold With Us![^]

how to get information from ram

J51219827-Mar-06 3:33

J5121982

7-Mar-06 3:33

http://www.codeproject.com/dialog/CDialogSK.asp[^]

look at the code here
i belive that u get the solution

JAYARAJ

ss20066-Mar-06 22:31

ss2006

6-Mar-06 22:31

how to get data from ram

am

toxcct6-Mar-06 22:33

6-Mar-06 22:33

please ask a more specific question...
you want to recover so datas stored on the RAM ?
or you want to get RAM manufacturer infos ?

Eytukan6-Mar-06 22:58

Eytukan

6-Mar-06 22:58

I think he's talking about memory size.

VuNic

Eytukan6-Mar-06 22:59

Eytukan

6-Mar-06 22:59

MEMORYSTATUSEX

VuNic

making menus look like in vs2005 with native win32 API

David Crow7-Mar-06 3:54

David Crow

7-Mar-06 3:54

Your 'question' is a bit vague. The following variables all occupy a set amount of space in the computer's memory:

int x;
char y;
double z;

To put information into them, use:

x = 1;
y = 'A';
z = 9.01;

To get information from them, simply reference them like:

int a = x;
or
printf("%d", x);

If I'm way off, please restate your question and what you are trying to accomplish.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

MagicMaxi6-Mar-06 22:14

MagicMaxi

6-Mar-06 22:14

Hi!

I've searched the site and the forums, but I have only found sth about that topic using the MFC. I need that in pure Win32Api.

How can I make Menus look like they are in vs2005 or sth. I mean the gray background, icons and so on?
I hope you can help me Smile | :)

Re: making menus look like in vs2005 with native win32 API

toxcct6-Mar-06 22:34