C / C++ / MFC

19-Dec-01 5:43

It depends on which API you want to use:

if you want to use OpenGL: http://nehe.gamedev.net
book: OpenGL game programming

if you're gonna use DirectX: http://nexe.gamedev.net
i dunno any book

or r ye gonna program 3d without an API? hey anythings possible....

Kuniva

Help needed

19-Dec-01 3:09

Hello expert C++ programmers...

I am not an expert anymore.. Frown | :(

(or have I ever been?)

Well I program java now, but I need to do a program in C++
I have the stupidest question. I want to know how to make an array, and I have forgotten how. Could anyone plz show me.

I want to declare an array of character arrays.

char myArray[xx][xx];

but... I want to do it dynamically

something like: char myArray** = new char[xx][xx];

but that didnt work, and i cannot figure out how to do it. who better to ask than experts!?

Rickard Andersson²⁰19-Dec-01 3:21

Rickard Andersson²⁰

19-Dec-01 3:21

Tror du är från sverige va?? Smile | :)

Du gör så här:

// deklarera en variabel dynamiskt så här:

char* myArray = new char[4]; // 4 eller så många du vill

// sedan töm minnet

delete [] myArray;

If you didn't was a SWEDISH guy:

Declare an array dyn like this:

char* myArray = new char[4]; // 4 or how many elements you want

and then free it like this:

delete[] myArray;

------------------------------
©0d3 ©®4©k3® - That's me! Smile | :)

------------------------------

19-Dec-01 3:52

Rickard Andersson wrote:
Declare an array dyn like this:

char* myArray = new char[4]; // 4 or how many elements you want

and then free it like this:

delete[] myArray;

Yes, I am swedish Wink | ;)

That array is no problem to declare. The problem I have is to dynamically delcare and array of arrays. That means I want to declare an array of pointers to a array-pointer.

Declared NOT DYNAMIC, char myArray[10][20];

This will get me an array with 10 arrays each 20 long. The question is how to do it with the new operator.

>> char* myArray = new char[4]; // 4 or how many elements you want

you can declare this char myArray[4];
or char myArray[] = " ";

I am not interested in a singel array of whatever. A twodimensional array dynamically declared.

I hope I have clarified a bit Smile | :)

Happy Christmas, and thanks for your help

// Robert

Nish Nishant19-Dec-01 17:26

Nish Nishant

19-Dec-01 17:26

char **a = new char*[20];<br><br />
for(i=0;i<=19;i++)<br />
    a[i]= new char[10];

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

Kuniva19-Dec-01 3:22

19-Dec-01 3:22

suckup

weeeeeeeeeeeeeeeeeeeeeeeeeeeeeee lol i'm just crazy, i didn't mean that, i just had to say that, it sounded funny in my head! sorry to've wasted your time i wouldn't know how to do it either!

Kuniva

Alvaro Mendez19-Dec-01 5:49

Alvaro Mendez

19-Dec-01 5:49

Here's how:

int X = some_calculated_number();
int Y = some_other_calculated_number();
 
// Create the array of pointers to characters
char** myArray = new char*[X];
 
// Loop through each element and assign each new array individually
for (int i = 0; i < X; i++)
    myArray[i] = new char[Y];

Regards,
Alvaro

getting a file's last accessed/modified time

19-Dec-01 6:24

Thank you,

// Robert

Kuniva19-Dec-01 2:32

Re: getting a file's last accessed/modified time

19-Dec-01 2:32

I need to get the time a certain file was last modified/accessed.

I'm guessing i can use CFileFind for this?

CFileFind::GetLastAccessTime(&CTime) ????

how do i use it? how do i set the filename???
+ i need to get the time in a CString

CFileFind.Format(blablabla) ???

Anyone know this?

Thanks

Kuniva

Ravi Bhavnani19-Dec-01 2:56

Re: getting a file's last accessed/modified time

19-Dec-01 2:56

Use CFile::GetStatus().

/ravi

"There is always one more bug..."
http://www.ravib.com
ravib@ravib.com

Kuniva19-Dec-01 3:20

19-Dec-01 3:20

woohoo it works!! thanks!

Kuniva

Process

Praba19-Dec-01 1:46

Praba

19-Dec-01 1:46

How can I determine from within of my programm wether the particular process is running or not in my system when I know only name of exe file? Confused | :confused:

Re: Process

Ravi Bhavnani19-Dec-01 8:22

19-Dec-01 8:22

Perhaps you could enumerate all processes using EnumProcesses() and inspect their filenames using GetModuleFileNameEx(). /ravi "There is always one more bug..." ravib@ravib.com http://www.ravib.com

Re: Process

Ravi Bhavnani19-Dec-01 11:28

Maximum Number of Files Per Directory

19-Dec-01 11:28

See http://www.codeproject.com/threads/enumprocess.asp.

/ravi

"There is always one more bug..."
ravib@ravib.com
http://www.ravib.com

Dialog not showing.

Jon Hulatt19-Dec-01 1:15

Jon Hulatt

19-Dec-01 1:15

Hi,

My MFC dialog app, for initialisation, needs to load and process a large file, and operation which takes about 20 seconds.

I decided to make a new dialog class, CLoad. This dialog class implements worker threads to do the load, and displays a status bar for the user.

In CMyApp::InitInstance():

CLoad  load_dlg;
CMainDlg dlg;
	

m_pMainWnd = &load_dlg;
load_dlg.DoModal();

m_pMainWnd = &dlg;

int nResponse = dlg.DoModal();
	if (nResponse == IDOK) .......

Basically, i DoModal() on my loading dialog, i call EndDialog() from within that dialog to close it when the loading is finished. Then, the second (main) dialog should be shown. But the dlg.DoModal() returns immediately and the dialog is not shown. Is this because I'm closing the main dialog with EndDialog() ?

I really don't know why my dialog is not showing.

Any ideas?

Sorry to dissapoint you all with my lack of a witty or poignant signature.

Re: Dialog not showing.

Rickard Andersson²⁰19-Dec-01 3:30

Rickard Andersson²⁰

19-Dec-01 3:30

If you want to show a dialog box before the main dialog box you CAN create a CLoad object in the OnInitDialog(...) but do it do the call before every other inits:

BOOL CMyDlg::OnInitDialog();
{
// Show a dialog before the main dialog appears
CLoad load_dlg;
int ret = load_dlg.DoModal();
if( ret == IDOK) // The user closed the dialog by hitting button with ID: IDOK
{
// do something or do nothihng with the return value
}

// Here comes all other stuff

LoadIcon(m_hIcon, TRUE);
...

return TRUE;
}

------------------------------
©0d3 ©®4©k3® - That's me! Smile | :)

------------------------------

John Clump19-Dec-01 0:51

John Clump

19-Dec-01 0:51

Does anyone know the maximum number of files allowed in a single directory under win95 and under NT? I tried to find this in MSDN, MS Knowledge base etc, but I couldn't find it. Is there even a limit? I know there is a maximum number of files allowed in a root dir, but is there a maximum for any directory under the root? If there is no maximum number of files, is there a rough number of files I should allow the user to create under a directory (isues of stability etc.) My program reads a database and allows the users to create a backup of that database, but I want to watch them and make sure they don't exceed either a maximum number of allowed files, or a number of recommened files to keep the system stable.

Re: Maximum Number of Files Per Directory

Rick Crone20-Dec-01 8:51

Rick Crone

20-Dec-01 8:51

I don't think there is a limit to the number of files in a directory. Each directory is really just a 'special' file. We had an application that saved some medical billing information in simple text files in a directory on a Windows NT server. After a few years there were so many files you would not want to try to list them (like with a DIR command) 'cause it would just run and run, but the application that used them still could select a file by name quickly. We finally decided this data would be better stored in an SQL table and made that change.

ListBox In SDk

San19-Dec-01 0:49

San

19-Dec-01 0:49

Hi All,

How to Add strings in a ListBox using API's in SDK?

Thanks in Advance

Sangeetha

Re: ListBox In SDk

Christian Graus19-Dec-01 1:11

Christian Graus

19-Dec-01 1:11

There is a message you can send, something like LB_ADDSTRING.

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

Sonork ID 100.10002:MeanManOzI live in Bob's HungOut now

Re: ListBox In SDk

Ravi Bhavnani19-Dec-01 8:24