C / C++ / MFC

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

locoone

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

locoone

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

Printing a user-defined datatype [modified]

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
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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

Jörgen Sigvardsson9-Jul-06 7:46

Jörgen Sigvardsson

9-Jul-06 7:46

I suppose that depends entirely on what braindead (or not) browser you've got.

--
Presented in BC [Brain Control] where available

GDI+

bob169729-Jul-06 8:54

bob16972

9-Jul-06 8:54

GDI+ is the simplest to use for image format conversions.

You simply load the image, set the encoder and save the image to file or stream. GDI+ is slow but it has proven itself to be very useful in terms of image manipulation and advanced effects.

It has a native C interface that Microsoft wraps with a C++ wrapper class. Be forewarned, if you come from an MFC background, their wrapper classes are somewhat frustrating and obviously designed by the Herb Sutter camp of "You should not be coding that way so we'll make it harder to shoot yourself in the foot" program team.

But, at the end of the day, it saved me tons of development time so I tend to overlook it's poor interface and still recommend it when performance is not critical.

Joe Woodbury9-Jul-06 9:23

Joe Woodbury

9-Jul-06 9:23

bob16972 wrote:
their wrapper classes are somewhat frustrating

I once worked with a guy who had been on the GDI+ team (or done some work for them; was never clear on that.) My first question was: Why?

His eventual answer was that the whole thing was essentially a proof-of-concept and never intended to be released.

My next question was whether Microsoft Engineers have to put up with designs like this for stuff that really is internal. I got no answer. (Given the horrific design of the TreeView and ListView controls, I suspect I knew the answer.)

Anyone who thinks he has a better idea of what's good for people than people do is a swine.
- P.J. O'Rourke

bob169729-Jul-06 9:40

bob16972

9-Jul-06 9:40

Joe Woodbury wrote:
Why?

It is indeed an oddity why they didn't just add some additional flags to some GDI functions and a few new methods for the image manipulation routines.

At this point in the game, I'm glad the additional functionality is available somewhere since implementing routines for all the image file formats would have set me back a few more years.

Joe Woodbury wrote:
never intended to be released

The sad part is, I was actually anticipating the next release of GDI+ for roughly a year until I came to my senses and realized they had indeed abandoned it's development in favor of the utilization of the DirectX layer that now is apparently underneath all the Vista graphics.

Live and learn.

:: sigh ::

earl10-Jul-06 4:56

earl

10-Jul-06 4:56

libtiff
libjpeg

are decent places to start. You might have to write the code that dumps to gif, I dunno, but at least the first two will decompress to bitmap or something similar.

Why, again, do you think browsers won't read jpg or png?

earl

bob1697210-Jul-06 6:48

bob16972

10-Jul-06 6:48

earl wrote:
Why, again, do you think browsers won't read jpg or png?

When exactly did I say that? I think your post got linked incorrectly