C / C++ / MFC

9-Jul-06 9:13

i have 2 combo boxs im my project have the data added to them have the control var's

CComboBox   m_takeout;<br />
CComboBox   m_putin;

set and have

m_putin.SetCurSel(0);<br />
m_takeout.SetCurSel(0);

in my OnInitDialog();
but it not setting the data into the edit part of the control.
anyone know why?

Ram Murali9-Jul-06 16:31

Ram Murali

9-Jul-06 16:31

This code is supposed to display the first data in the combobox data item. I dun know what went wrong. Can u plz paste ur OnInitDialog() function here?

Regards,
Ram

locoone9-Jul-06 16:34

9-Jul-06 16:34

<code>BOOL Renamer::OnInitDialog()
{
CDialog::OnInitDialog();

// TODO: Add extra initialization here
list.InsertColumn(0, "Title", LVCFMT_CENTER, 350, 0);
m_takeout.SetCurSel(0);
m_putin.SetCurSel(0);
m_takeout.UpdateWindow();
UpdateData(FALSE);

CString csTemp = BaseFolder;
csTemp += _T("\\*.mp3");
CFileFind ff;
BOOL bWorking = ff.FindFile(csTemp);
while (bWorking)
{
bWorking = ff.FindNextFile();
if ((ff.IsDirectory() && (ff.IsDots())))
{
continue;

// Recursively traverse this subdirectory
//EnumerateFolderContents(ff.GetFilePath());
}
else
{
int nIndex = list.GetItemCount();
CString m_songcount, songname, jh;
songname.Format("%s", ff.GetFilePath());
list.InsertItem(nIndex, ff.GetFileName());
list.UpdateWindow();
nIndex = nIndex + 1;
}
}
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}</code>
that is all of it

Ram Murali9-Jul-06 17:31

Ram Murali

9-Jul-06 17:31

This code is supposed to work well. if u dun get display.
Try to check for the following condition.

m_takeout.SetCurSel(0);
if(m_takeout.GetCurSel() != LB_ERR)
m_takeout.SetCurSel(0);
else
give someother value to m_takeout cbBox.

Regards,
Ram

Naveen9-Jul-06 17:55

Naveen

9-Jul-06 17:55

locoone wrote:
m_takeout.SetCurSel(0);
m_putin.SetCurSel(0);

where do u insert the strings into combobox?r u keeping it in the resources?

nave

locoone9-Jul-06 17:58

9-Jul-06 17:58

in the properties of the combo boxes in the data tab is where i put the data in the combo boxes like ive always done i just dont know why it isnt showing anything.

Re: combo box question [modified]

Naveen9-Jul-06 18:03

Naveen

9-Jul-06 18:03

ok..

try putting

m_takeout.SetCurSel(0);
m_putin.SetCurSel(0);

as the last statement just above the return TRUE; statement.

nave

locoone9-Jul-06 18:06

Printing a user-defined datatype [modified]

9-Jul-06 18:06

thanks dude that works and it didnt even cross my mind
Cool | :cool:

now if i can figure out how to make and use a worker thread to run my progress dialog ill be almost set lol
-- modified at 0:07 Monday 10th July, 2006

Harold_Wishes9-Jul-06 7:29

Harold_Wishes

9-Jul-06 7:29

Hello, I have received some help from earlier postings and have another question regarding the <list> class.

I have stored a list of items that are of a user-defined datatype and need a way of printing each item in the list. As shown below a struct has been defined of type data which includes 4 strings. The full program receives input by a user who types in a list of these objects of type data.

I was wondering if storing this list as a vector using a <vector> class is a better solution since I need to access each individual string per item in the vector.

Regards
HRW

#include <string>
#include <list>
#include <iostream>

using namespace std;

struct data 
{     string Length;     
      string Sequence;     
      string N_Terminal;     
      string C_Terminal;
};

-- modified at 13:33 Sunday 9th July, 2006

Steve Echols9-Jul-06 8:07

Steve Echols

9-Jul-06 8:07

Have you tried something like this (should work for both list and vector)?

list<data> dataList;<br />
list<data>::iterator dataListIter;<br />
<br />
for (dataListIter = dataList.begin(); dataListIter != dataList.end(); dataListIter++)<br />
{<br />
    printf("%s, %s, %s, %s\n", dataListIter->Length, dataListIter->Sequence, dataListIter->N_Terminal, dataListIter->C_Terminal);<br />
}

(Haven't tested it, there might be typos).

- S
50 cups of coffee and you know it's on!

Harold_Wishes9-Jul-06 8:41

Harold_Wishes

9-Jul-06 8:41

Hello, the code compiled but I did not see any output on my screen. I invoked a function called void tesings () to test out the program.
See below.

#include <string>
#include <list>
#include <iostream>

using namespace std;


struct data                                             //
{
     string Length;                   //
     string Sequence;                                               //  
     string N_Terminal;                                             // 
     string C_Terminal;
};


list<data> g_DataList;




void tesings ()
{


	list<data> dataList;
	list<data>::iterator dataListIter;
        data item;

       item.Length ="test";
       item.Sequence ="test";
       item.N_Terminal ="test";
       item.C_Terminal ="test";

       dataList.push_back(item);


	for (dataListIter = dataList.begin(); dataListIter != dataList.end(); dataListIter++)
	{
	printf("%s, %s, %s, %s\n", dataListIter->Length, dataListIter->Sequence, dataListIter->N_Terminal, dataListIter->C_Terminal);
	}

}

Re: Printing a user-defined datatype [modified]

Steve Echols9-Jul-06 9:17

Steve Echols

9-Jul-06 9:17

Is it a console app or windows app?

If it's a console app, you have to drop out to a command promtp window and run your app from there to see the output.

If it's a window app, well, then you need to place the output in a windows control, like a list box or something.

Maybe try adding a few more items and see what happens. Also might try setting a breakpoint on the printf line and see if it's even getting to that point.

- S
50 cups of coffee and you know it's on!

Harold_Wishes9-Jul-06 10:26

Harold_Wishes

9-Jul-06 10:26

I am testing the program using Visual C++ 6.0 and pressing the executable button to get to the console screen. I tried using cout statments instead and still end up with a blank screen. See sample below:

void tesings ()
{


	list<data> dataList;
	list<data>::iterator dataListIter;
    data item;

item.Length ="test";
item.Sequence ="test";
item.N_Terminal ="test";
item.C_Terminal ="test";

dataList.push_back(item);

item.Length ="test";
item.Sequence ="test";
item.N_Terminal ="test";
item.C_Terminal ="test";

dataList.push_back(item);
	for (dataListIter = dataList.begin(); dataListIter != dataList.end(); dataListIter++)
	{
	cout << dataListIter->Length << endl;
	cout << dataListIter->Sequence << endl;
	cout << dataListIter->N_Terminal << endl;
	cout << dataListIter->C_Terminal << endl;
	}

}

I see my error. I was redeclaring my function in main() but I never actually invoked it.

I typed:

void tesings ();

instead of

tesings();

Thanks for the help! Smile | :)

-- modified at 16:37 Sunday 9th July, 2006

Other instances of a program

Steve Echols9-Jul-06 17:48

Steve Echols

9-Jul-06 17:48

Cool, glad it's working now! Declaring local functions is one of the dangers of C++, but once you find the error, it's one of those "doh!" D'Oh! | :doh:

moments, and you have to laugh. Smile | :)

- S
50 cups of coffee and you know it's on!

RomTibi9-Jul-06 7:07

RomTibi

9-Jul-06 7:07

How can a program detect other instances of itself running simultaneously? In VC++ please

Re: Other instances of a program

Jun Du9-Jul-06 11:04

Jun Du

9-Jul-06 11:04

Search CP for "single instance". You'll get tons of articles about your question.

Best,
Jun

Re: Other instances of a program

ThatsAlok9-Jul-06 20:17

ThatsAlok

9-Jul-06 20:17

RomTibi wrote:
ow can a program detect other instances of itself running simultaneously? In VC++ please

http://www.codeproject.com/cpp/csingleinst.asp[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You

Saving a (image) file in different format

snir_ya9-Jul-06 5:06

snir_ya

9-Jul-06 5:06

Hi,

I'm generating an html page on-the-fly in my application.
This page should contain images. The images i have in the DB are of formats that cannot be used in html (jpeg, png etc) so i need to save them in gif format.

Does anybody have a lead on how to save these image files in gif format?

Thanks in advance.

Tara149-Jul-06 5:09

Tara14

9-Jul-06 5:09

I guess you can open them in MS Paint and then save them to the bmp/gif format. Paint does the conversion.

Fortitudine Vincimus!

snir_ya9-Jul-06 5:13

snir_ya

9-Jul-06 5:13

Sure, but but this has to be implemented on-the-fly. The DB is dynamic and i don't know in advance what's its content.

It has to be done in coding. Thanks anyway.

C^hris L^osinger9-Jul-06 6:56

C^hris L^osinger

9-Jul-06 6:56

you can certainly use both JPG and PNG in HTML.

Cleek | Image Toolkits | Thumbnail maker