Re: creating a clock - C / C++ / MFC Discussion Boards

Re: Class #1 creates array of type Class#2?

So and So12-Jul-04 12:23

12-Jul-04 12:23

I just found a solution: don't use the ".cpp" file for class definition, just define the class in ".h"

At least now it appears to be picking up the attributes of "Columns" class.

Re: Class #1 creates array of type Class#2?

Weiye Chen12-Jul-04 15:14

Weiye Chen

12-Jul-04 15:14

So and So wrote:
Columns t_Columns[45];
.
.
t_Columns[i] = new Columns();

Your t_Columns is an array of Columns objects so you can't 'new' it. It is already created.

So and So wrote:
Columns * t_Columns[45];
.
.
*(t_Columns + i) = new Columns();

Now you can 'new' it but you should write it as:

t_Columns[i] = new Columns();

<font=arial>Weiye Chen
When pursuing your dreams, don't forget to enjoy your life...

creating a clock

osal12-Jul-04 11:45

osal

12-Jul-04 11:45

Hi everyone, I'm working on this program for work,and Im trying to create a clock at the bottom right hand side of the screen in a status bar so it shows the user how long theyhave been using the program. the clock should work like this. First when the user first starts the program the clock will be at 00:00:00, and then 1 second later itll be at 00:00:01, and then two seconds later itll be at 00:00:02, and so on. Ive been looking everywhere on the net, but I havent been able to find anything. Im coding in C++ and using Win32 programming NOT the MFC's.

if u have an answer for me, email me at osalman@csulb.edu. or just reply here. Thank you all for your time!

Re: creating a clock

ben212-Jul-04 11:48

ben2

12-Jul-04 11:48

I dont know how to put the time at the status bar, but time since process started can be found by clock() function
http://www.cplusplus.com/ref/ctime/clock.html

Re: creating a clock

osal12-Jul-04 12:03

osal

12-Jul-04 12:03

Well the code that was there are all for a windows console program. Im trying to make a Win32 GUI program. My clock should work like a clock on a MIDI program in the sense the user can see the seconds going by and what not. Do you have any examples of that.

Thanks for all your help. Smile | :)

Re: creating a clock

Ravi Bhavnani12-Jul-04 12:58

Ravi Bhavnani

12-Jul-04 12:58

Create a statusbar pane (eg: with id IDC_CLOCK_PANE) and write a ON_UPDATE_COMMAND_UI handler for it which sets the pane's text to the current time.

void CMainFrame::OnUpdateClockPane
  (CCmdUI* pCmdUI) 
{
  ASSERT (NULL != pCmdUI);
  pCmdUI->SetText (CTime::GetCurrentTime().Format(_T("...")));
}

Oh wait - you're not using MFC. In that case, you could create a one second timer (actually slightly less than 1 sec) and update the main window's status bar's pane within the handler for WM_TIMER.

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

Re: creating a clock

osal12-Jul-04 15:22

osal

12-Jul-04 15:22

Well the thing is, I dont know how to make the clock appear on my window. I was wondering if anyone knew how to do that. I dont know how to create it at all.

Re: creating a clock

J.B.12-Jul-04 19:20

J.B.

12-Jul-04 19:20

I think Nishant's status bar article is what you are looking for, with a little modification for your needs.

http://www.codeproject.com/statusbar/dlgstatbar01.asp

Since you want to show total running time, you can first record and store the initial time upon application's startup. And the on every OnTimer() function call, take the difference between the initial time and the current time and output on the status bar.

Browser addon/toolbar ?

ben212-Jul-04 11:32

ben2

12-Jul-04 11:32

Hi,

Can anyone give me some pointer on how I can make some IE browser addons like Google toolbar/yahoo tollbar.

Thanks

Re: Browser addon/toolbar ?

Ravi Bhavnani12-Jul-04 13:00

Ravi Bhavnani

12-Jul-04 13:00

A CodeProject search for "ie toolbar" will yield several examples.

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

the SINUS

The_Server12-Jul-04 9:54

The_Server

12-Jul-04 9:54

Hi all...
(* long time no seen *) Wink | ;)

For months and months I try to find out...
What is the formula behind the sinus,
because I want to do my own sinus function (Ex. double MySin(double) )

Please heeelp me...
Any kind of help will be greatly appreciated

=-=-=-=-=-=-=
The Server Rose | [Rose]

Re: the SINUS

palbano12-Jul-04 10:03

palbano

12-Jul-04 10:03

http://mathworld.wolfram.com/Sine.html[^]

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Alignment and Packing of Structures

jerry1211a12-Jul-04 7:29

jerry1211a

12-Jul-04 7:29

Can someone tell me where I can find some good info, on packing structures and alignment. I have never quite understood the topic.
I have to pack some structures in my Windows application.

Thanks.
Jerry

Re: Alignment and Packing of Structures

David Crow12-Jul-04 8:34

David Crow

12-Jul-04 8:34

Start with the #pragma pack() directive.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Alignment and Packing of Structures

jerry1211a12-Jul-04 8:51

jerry1211a

12-Jul-04 8:51

OK thanks.

Jerry

win32 drawing

Anonymous12-Jul-04 7:00

Anonymous

12-Jul-04 7:00

Hai,
I'm using win32 vc++. I'm drawing the background for my button by subclassing.
But at no. of times I'm enabling and disabling the button in my dialog procedure(not in subclass proc). At those times how can I display the text in button as grey ie. how can I retrieve the text from the button and grey it?
Thanks a lot.

Re: win32 drawing

Navin12-Jul-04 10:57

Navin

12-Jul-04 10:57

Does GetWindowText work??

"Fish and guests stink in three days." - Benjamin Franlkin

Re: win32 drawing

md666612-Jul-04 11:14

md6666

12-Jul-04 11:14

hai,
GetWindowText did'nt work. It's getting the caption of the button which there is none cause i'm displaying the text of the button using DrawText() inside the subclass procedure.
anyway thanks.

Re: win32 drawing

Bob Stanneveld12-Jul-04 13:19

Bob Stanneveld

12-Jul-04 13:19

In that case, you should store a copy of the text displayed in a member variable inside the subclass. Then override the GetWindowText function (or define an other) that gives you acces to the caption of the button.

A student knows little about a lot.
A professor knows a lot about little.
I know everything about nothing.

integrating C++ and VC++???

naveen_vi12-Jul-04 6:25

naveen_vi

12-Jul-04 6:25

Hi,

I have a device driver for a USB device written in VC++.There is a function in it to Read /write data to the USB port.Now I want to write a a function in C++ so that users can write programs in C++ rather in VC++.

Since c++ doesnt recognise data types like DWORD,BUFFER etc..I am struck.

Is there anyway i can link C++ and VC++.Can i use pointers.
thanks

nev.

Re: integrating C++ and VC++???

palbano12-Jul-04 7:02

palbano

12-Jul-04 7:02

naveen_vi wrote:
Since c++ doesnt recognise data types like DWORD

From WinDef.h

typedef unsigned long DWORD;

naveen_vi wrote:
Is there anyway i can link C++ and VC++.Can i use pointers.

WTF | :WTF:

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Re: integrating C++ and VC++???

naveen_vi12-Jul-04 7:33

naveen_vi

12-Jul-04 7:33

Hi,

Thanks for ur reply.

So is it enough to include windef.h in my C++ program and write my own header file.
so with typdef can i convert all windows data and use them in my C++ file.

nev

Re: integrating C++ and VC++???

palbano12-Jul-04 7:38

palbano

12-Jul-04 7:38

nev, i don't want to insult you but this is all beginner C++ issues. You should probably take the time to study these basic language concepts so that you understand them before you attempt to implement your project.

But, that's just my opinion... I could be wrong.

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Re: integrating C++ and VC++???

Michael Dunn12-Jul-04 9:14

Michael Dunn

12-Jul-04 9:14

naveen_vi wrote:
so that users can write programs in C++ rather in VC++.

Not sure I understand what you're asking. Visual C++ is the IDE, C++ is the language. You don't need VC to write C++.

--Mike--
Personal stuff:: Ericahist | Homepage
Shareware stuff:: 1ClickPicGrabber | RightClick-Encrypt
CP stuff:: CP SearchBar v2.0.2 | C++ Forum FAQ
----

Re: integrating C++ and VC++???

Anonymous12-Jul-04 10:05

Anonymous

12-Jul-04 10:05

hi mike,

I have a USB chip.They have given me the device driver and thier function looks like this.
http://www.ftdichip.com/knowledgebase/d2xx/manual/userguide.htm

write function is:
FT_STATUS FT_Write ( FT_HANDLE ftHandle, LPVOID lpBuffer, DWORD dwBytesToWrite, LPDWORD lpdwBytesWritten ) .They actually imported functions from win32 api(kernell32.dll).

where FT_status is ULONG data type.
http://www.ftdichip.com/knowledgebase/d2xx/manual/userguide.htm

If i just want to write a C++ program to write my data into LPVOID lpbuffer.How do i di it.I want my function to look like

write(int addr,unsigned char data);

nev

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