C / C++ / MFC

Re: Where Do I Add the Filters used for File->Open?

16-Jun-03 3:13

Hi there.

I have created an MDI program, and I need to know, where do I add the filters used when a user does a File->Open? Sorry if this is an inane question, but I'm used to using Borland C++ Builder, and obviously VS .Net does things differently.

Thanks!

James A Beggs
American Quarter Horse Association
Manager of Product Development

David Crow16-Jun-03 3:22

Re: Where Do I Add the Filters used for File->Open?

16-Jun-03 3:22

Are you using CFileDialog or GetOpenFileName()?

James A Beggs16-Jun-03 3:39

Re: Where Do I Add the Filters used for File->Open?

16-Jun-03 3:39

I, uhm.... dont know? Smile | :)

I used the wizard to generate an automatic MDI for me, and it set up the parent's menu system and everything. It had a section in the wizard for inputting the file name to open, but I decided to add more to it.

The main application class inherits from CWinApp. The wizard automatically created a Message Map that maps its file->open to CWinAPP::OnFileOpen

(Man, I feel stupid. I wouldn't think working on something so simple would have been so hard when translating from Borland C++ Builder to VS .Net. I guess C++ Builder's RAD spoiled me :/ )

James A Beggs
American Quarter Horse Association
Manager of Product Development

David Crow16-Jun-03 3:45

Re: Where Do I Add the Filters used for File->Open?

16-Jun-03 3:45

Sounds like you simply need to modify the IDR_MAINFRAME string in the resource file.

James A Beggs16-Jun-03 3:49

Re: Where Do I Add the Filters used for File->Open?

16-Jun-03 3:49

Well... it has a string in the string table, IDR_ImageFileMasterTYPE (the name if the application is Image FileMaster), and it contains the string that is listed when you do a File->Open, including a path, a filter, etc.

But, in modifying the string so that it contained more than one filter made no difference; it listed the new string in the file->open dialog, but didn't actually show the new file extensions.

James A Beggs
American Quarter Horse Association
Manager of Product Development

David Crow16-Jun-03 3:58

Re: Where Do I Add the Filters used for File->Open?

16-Jun-03 3:58

Probably because an MDI app, by default, does not know how to handle more than one file type. Read MSDN article Q141921.

James A Beggs16-Jun-03 4:06

Re: Where Do I Add the Filters used for File->Open?

16-Jun-03 4:06

Well, how irritating. I changed the string, as it said, but according to the article, it wasn't enough. Oh well, thanks for the pointer to the article!

James A Beggs
American Quarter Horse Association
Manager of Product Development

David Crow16-Jun-03 4:12

Re: Where Do I Add the Filters used for File->Open?

16-Jun-03 4:12

James A Beggs wrote:
I changed the string, as it said, but according to the article, it wasn't enough.

Right, you must implement at least the first four steps in order to achieve the desired results. Simply changing the string does nothing. I would suggest stepping through the MFC code for opening documents to see what is going on. Knowing how/why MFC does what it does is always helpful.

James A Beggs16-Jun-03 4:13

Re: Where Do I Add the Filters used for File->Open?

16-Jun-03 4:13

I think I'll also be getting a book on MFC, as I haven't really worked with it either.

Thanks again.

James A Beggs
American Quarter Horse Association
Manager of Product Development

James A Beggs16-Jun-03 4:15

Re: Where Do I Add the Filters used for File->Open?

16-Jun-03 4:15

Actually, could you suggest a good book on MFC?

James A Beggs
American Quarter Horse Association
Manager of Product Development

David Crow16-Jun-03 4:34

Programmatically installing a modem using Win32 API

16-Jun-03 4:34

"Good" is in the eye of the reader! I have Kruglinski's Inside Visual C++ (which includes nothing for v6), and Mastering MFC Development Using Microsoft Visual C++ 6.0 by Microsoft Press.

I believe all books are intended for a particular target audience. I've read very little of either book because most of what they contain I've known about simply by using MFC from its inception (see my earlier note on stepping through code). I'm no MFC expert, and probably learn 1-2 new things about it each week.

Ajith Kumar16-Jun-03 2:46

Ajith Kumar

16-Jun-03 2:46

I want to install the "Standard 19200 bps Modem" in Windows
programmatically and set some modem properties like "Use flow control" (AT commands)
etc .

Any pointers would be very helpful.

Regards,
Ajith

Measuring time of execution

affzan16-Jun-03 2:04

affzan

16-Jun-03 2:04

Hi all

How do I measure the time taken to execute a function? I'm working on a real time project at the moment so I want to know how fast my program would go. I've noticed the function time(time_t *) but I don't know how it works. Can anybody please give me some codes on how to use it?

Thanks a lot Smile | :)

alex.barylski16-Jun-03 2:23

alex.barylski

16-Jun-03 2:23

Heres an article i wrote a while back, it should give a good idea how to clock your functions.

http://www.codeproject.com/cpp/profiler.asp

Cheers Smile | :)

"Two wrongs don't make a right, but three lefts do!" - Alex Barylski Smile | :)

peterchen16-Jun-03 2:26

peterchen

16-Jun-03 2:26

For Win32/x86 the most accurate is:

class CHPFCounter
{
  public:
    __int64  m_started;

    void     Start()
    {
       LARGE_INTEGER  li;
       QueryPerformanceCounter(&li);
       m_started = li.QuadPart;
    }

    double  Time()
    {
       LARGE_INTEGER  li;
       QueryPerformanceCounter(&li);
       __int64 ticks =li.QuadPart - m_started;
       QueryPerformanceFrequency(&li);
       double seconds = (double) ticks / li.QuadPart;
       return seconds;
    }
};

Time() returns time in seconds (resolution is around CPU clock).
However, it's recommended to
a) measure each snippet multiple times, to see variations
b) verify the assembly that you indeed measure what you think you measure

"Der Geist des Kriegers ist erwacht / Ich hab die Macht" StS

sighist | Agile Programming | doxygen

Tarundeep Singh Kalra16-Jun-03 3:09

Tarundeep Singh Kalra

16-Jun-03 3:09

hi you can do profiling ,
see the article at
http://www.codeproject.com/useritems/profiling_isapi.asp
regards
tarun

the way to access FileSystemObject

Hosam Aly Mahmoud16-Jun-03 5:48

Hosam Aly Mahmoud

16-Jun-03 5:48

Using time(time_t *) is easy. time_t is declared as typedef long time_t. The function time(...) returns the time elapsed in seconds from the start of the system's calender. On my system, it returns how many seconds elapsed since 00:00:00 1/1/1980. To use this function to calculate time difference, you may look at double difftime ( time_t timer1, time_t timer0 ). I believe that using clock_t clock() would give much more accurate results. For example, write:

// Start of function
clock_t start, finish;
start = clock()
// Do your work here
finish = clock()
cout << "The function took " <<
     double(finish - start) / CLOCKS_PER_SECOND <<
     " seconds.\n";
// End of function

Hosam Aly Mahmoud

Krisna Adityawan16-Jun-03 1:54

Krisna Adityawan

16-Jun-03 1:54

I have 2 program listings as a function in VB6. I want that function run in C++ Builder6, but i confuse Confused | :confused:

the way to access FileSystemObject and type, DateLastModified of a file and to initiate interval variable with the type Date

//--------------------------------------------------------------------------
Function del()
Dim a As FileSystemObject
Dim d As Folder
Dim c As file

Set a = New FileSystemObject

Set d = a.GetFolder("d:\oracle\admin\" & HOST.Text & "\udump\")
For Each c In d.Files
If c.Type = "TRC File" Then
c.Delete True
End If
Next

End Function

//-----------------------------------------------------------------------------
Function newest() As file
Dim a As FileSystemObject
Dim d As Folder
Dim c As file
Dim interval As Date

interval = #12/12/2012#
Set a = New FileSystemObject

Set d = a.GetFolder("d:\oracle\admin\" & HOST.Text & "\udump\")
For Each c In d.Files
If (interval > (Now() - c.DateLastModified)) Then
interval = (Now() - c.DateLastModified)
If c.Type = "TRC File" Then
Set newest = c
End If
End If
Next

End Function
//--------------------------------------------------------------------------

Thx for helping me;)

Getting user information

abhinarulkar16-Jun-03 1:49

abhinarulkar

16-Jun-03 1:49

Hi,
I want to get the user account information from the local machine. For this I'm using NetUserGetInfo method. Moreover I want to know if a particular user account has been disabled or not. I went through some Network Management Structures but din't come across any structure that would explicitly provide me with this info. Kindly anybody tell me how to extract this info from Windows using Net API.
Thanks
Abhishek.

Learning is a never ending process of Life.

Re: Getting user information

David Crow16-Jun-03 3:16

16-Jun-03 3:16

Look at the usri2_flags member of the USER_INFO_2 structure.

tAB CONTROL

vcseeker16-Jun-03 1:36

vcseeker

16-Jun-03 1:36

Hi all,
I want to use a tab control inside apropertyPage,but i have absolutly no idea
about how to use a tab control in MFC.Can i get a step by step Tutorial to add a tab control and adding controls to each tab.I searched the web ,but couldn't found a good tuto.Any help would be appreciated.

Re: tAB CONTROL

David Crow16-Jun-03 3:47