how do u do this???? - C / C++ / MFC Discussion Boards

mcsherry3-Apr-06 2:48

3-Apr-06 2:48

further to this.

I've created a new MFC dialog and added a calander and a drop down box, I've then added the following code on the SelChange method of the calander along with a break point:

CTime myTime ;
m_Calander.GetCurSel ( myTime ) ;

int day = myTime.GetDay ( ) ;
int month = myTime.GetMonth ( ) ;
int year = myTime.GetYear ( ) ;

running the porgram and selecting different dates on the calander gives the correct results, however as soon as I click on the drop down box and then click on another date on this calander the result is incorrect!
Any ideas?

cheers,
Andy

Re: CMonthCalCtrl funny

mcsherry3-Apr-06 3:30

mcsherry

3-Apr-06 3:30

sort of fixed this problem, instead of using GetCurSel on the calander do this following:

SYSTEMTIME SelectedDateStruct = { 0 };
DateTime_GetSystemtime( m_Calander.GetSafeHwnd(), &SelectedDateStruct);

this seems to always return the correct values (I got this solution from: http://codeguru.earthweb.com/forum/showthread.php?p=990808#post990808[^]

Andy,

Finding files

Waldermort2-Apr-06 23:44

Waldermort

2-Apr-06 23:44

I have somewhat of a strange problem. I have associated a file type with my app, and set all the registry values accordingly. Double clicking the file opens my app and passes the file and path just as it should. From within my app I then check if the file is there.

WIN32_FIND_DATA fd;
HANDLE          hand;

hand = FindFirstFile(filename,&fd);
if (hand == INVALID_HANDLE_VALUE) {
    MessageBox(0,"File not found",0,0);
    return 0;
}
FindClose(hand);

All this works from within the MSVC environment with both release and debug builds. But after installing the app (program files directory) the findfirstfile() always fails. I have tried placing the file in various locations but it can never confirm that it's there.

Any ideas as to what I may be doing wrong?

Re: Finding files

khan++2-Apr-06 23:50

khan++

2-Apr-06 23:50

FindFirstFile() etc set of file find functions look in the current directory if the full path to the file has not been given. I am not sure, but are you getting the full path, or just the filename? If you are getting the full path, then you could use GetFileAttributes() etc. Also try some way to find the directory from which the file was dropped onto the app.

this is this.

Re: Finding files

Waldermort2-Apr-06 23:55

Waldermort

2-Apr-06 23:55

yes, I am giving the full path. I have also noticed that it's not only this function failing me, none of my openfile functions are able to find/open files.

It doesn't matter what filetype is passed, anything passed on the command line is not found.

Re: Finding files

Waldermort3-Apr-06 0:04

Waldermort

3-Apr-06 0:04

No worries, the problem was the registry setting. It was set up to pass a quoted argument.

Re: Finding files

Hamid_RT3-Apr-06 1:48

Hamid_RT

3-Apr-06 1:48

Hi waldermort,
Do you set Directory?

how do u do this????

slurpyz2-Apr-06 23:32

slurpyz

2-Apr-06 23:32

a game to transform letters read from a file to a prime number. Do and enjoy it!

The goal of this is to construct a C++ program that will read all letters from a specified file and transform them to a prime number.

The tasks you have to perform are:

(A) Read letters in sequence from a specified file, which contains 1 sentence. Transform each letter to the corresponding ASCII value.

For example, if the file contains “What?” then

‘W’ corresponds to 87

‘h’ corresponds to 104

‘a’ corresponds to 97

‘t’ corresponds to 116

(B) Calculate and output r1=the sum of all obtained integers (e.g. r1=87+104+97+116=404)

(C) Calculate and output r2=the length of Syracuse sequence seeded by r1.

Let n be a positive integer and f(n) be the transformation that sends n to n/2 if n is even and sends n to 3n+1 if n is odd. Starting with a positive value u called the seed, the sequence of integers iteratively generated by f and u is called a Syracuse sequence.

For example, starting with the seed u = 1, the subsequent terms of the sequence are 4, 2, and 1. The length of the sequence (excluding the seed) is therefore 3.

For u = 4, the next terms are 2 and 1. The length is 2.

For u = 404, the next terms are 202, 101, 304, 152, 76, 38, 19, 58, 29, 88, 44, 22, 11, 34, 17, 52, 26, 13, 40, 20, 10, 5, 16, 8, 4, 2, and 1. The length is 27.

It is conjectured (this means that we do not have a proof of this fact, only strong evidences) that for any positive seed the sequence will always reach to 1. In fact, computations show that for any seed u less than or equal to 3*2^53, the corresponding sequence always reaches 1. The general case is unknown.

(D) Calculate and output r3=the largest prime factor of r2.

A prime factor of n is a factor of n which is a prime number. A prime number is any integer greater than 1 and only divisible by itself and 1 (e.g. 2, 3, 5, 7, 11, 13, 17 etc). For example, 3 is the largest prime factor of 27 and 7 is the largest prime factor of 49.

Here are some example
Example 1
Enter the name of the input file: in1.txt
963
49
7

Press CTR-C to Leave...

Re: how do u do this????

Abebe2-Apr-06 23:41

Abebe

2-Apr-06 23:41

burp[^]

Er zit een korstje op mijn aars.

Re: how do u do this????

David Crow3-Apr-06 2:28

David Crow

3-Apr-06 2:28

Do you attend Macquarie University, and have Dr. Wang as an instructor?

"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

How to handle Close button in MDI?

Sarvan AL2-Apr-06 23:27

Sarvan AL

2-Apr-06 23:27

Hi all,

In my MDI application, I've handled application exit in menu. But I am not able to handle close button (x) in the title bar. Since, my document is modified, it is showing the "save document yes / no" with default message box title.
How should I handle this?

Thanks in advance,
Sarvan AL

-- modified at 5:28 Monday 3rd April, 2006

Re: How to handle Close button in MDI?

khan++2-Apr-06 23:45

khan++

2-Apr-06 23:45

You could handle the WM_CLOSE message for CMainFrame

this is this.

Re: How to handle Close button in MDI?

Sarvan AL2-Apr-06 23:58

Sarvan AL

2-Apr-06 23:58

Hi Khan,

It not even comes to "void CMainFrame::OnClose()".
What to do?

Sarvan AL

Re: How to handle Close button in MDI?

khan++3-Apr-06 0:14

khan++

3-Apr-06 0:14

How did you add the handler? Check that the macro for WM_CLOSE is there in the Message Map of CMainFrame:

...<br />
ON_WM_CLOSE() //This one<br />
//}}AFX_MSG_MAP<br />
END_MESSAGE_MAP()

this is this.

Re: How to handle Close button in MDI?

Nibu babu thomas3-Apr-06 0:16

Nibu babu thomas

3-Apr-06 0:16

This will do...

Override WindowProc in CMainFrame class...

Add this to MainFrame.h

LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam);

Add this to MainFrame.cpp

LRESULT CMainFrame::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
	if(message == WM_SYSCOMMAND && wParam == SC_CLOSE)
	{
		MessageBox("Closing application");
	}
	<font color=blue>return</font> CMDIFrameWnd::WindowProc(message, wParam, lParam);
}

Nibu thomas
Software Developer

Re: How to handle Close button in MDI?

Sarvan AL3-Apr-06 0:26

Sarvan AL

3-Apr-06 0:26

Hi Nibu & Khan,

Now also, the result is same. Control is not coming to "CMainFrame::WindowProc(..)"

Sarvan AL

Re: How to handle Close button in MDI?

Nibu babu thomas3-Apr-06 0:39

Nibu babu thomas

3-Apr-06 0:39

I did test it. It's working here!

Nibu thomas
Software Developer

Re: How to handle Close button in MDI?

khan++3-Apr-06 0:41

khan++

3-Apr-06 0:41

Exactly which frame window are you trying to handle the message for? Do you mean CChildFrame or CMainFrame? because both the solutions work (WindowProc and WM_CLOSE).

this is this.

Re: How to handle Close button in MDI?

Sarvan AL3-Apr-06 0:46

Sarvan AL

3-Apr-06 0:46

Hi Nibu & Khan,

I am able to trap the close event by overriding the document class member function, "BOOL SaveModified()".
Now I got the expected results.

Thanks a Lot to spend your precious time for me.

Sarvan AL

-- modified at 7:04 Monday 3rd April, 2006

Re: How to handle Close button in MDI?

David Crow3-Apr-06 2:30

David Crow

3-Apr-06 2:30

Sarvan AL wrote:
How should I handle this?

Handle what? If the document has indeed been modified, why would you not want the "save document yes / no" message when the X is clicked?

"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

How to see all of my Questions?

Sarvan AL2-Apr-06 23:21

Sarvan AL

2-Apr-06 23:21

Hi all,

Pls help me to see all of my questions and their corresponding replies.

Thanks in advance,
Sarvan AL

Re: How to see all of my Questions?

khan++2-Apr-06 23:26

khan++

2-Apr-06 23:26

http://www.codeproject.com/script/comments/all_comments.asp?mode=all&userid=2355322[^]

this is this.

Re: How to see all of my Questions?

Sarvan AL2-Apr-06 23:42

Sarvan AL

2-Apr-06 23:42

Thanks a Lot, Khan.

How to Play Audio Files in VC6?

Andy Rama2-Apr-06 23:09

Andy Rama

2-Apr-06 23:09

Hi,
I have to develop an Audio Player with most of functionality in it.
How to Play Audio Files in VC6?
I think, it can be done by use of DirectX in VC.
But is there any other option for it?

Re: How to Play Audio Files in VC6?

Nibu babu thomas2-Apr-06 23:12

Nibu babu thomas

2-Apr-06 23:12

Aniket Salunkhe wrote:
How to Play Audio Files in VC6?
I think, it can be done by use of DirectX in VC.
But is there any other option for it?

Media Control Interface(MCI) is an option.

Nibu thomas
Software Developer

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