C / C++ / MFC Discussion Boards

theeastdevil30-Jun-04 6:54

30-Jun-04 6:54

suppose that u a writting a software to give grading to three different types of student certificate,diplom and degree students,all students will be required to sit for exams which wil be graded as follows:

1-39: F
40-59: D
59-69: C
70-79: B
80-100: A

In addition to that, the Diploma students will be required to attend the 'lab tes' session that awards them 'P'(PASS), 'F'(Fail)or 'X'(ABSENT). The Degree students, on the other hand, need to undergo an 'Industrial Training' that requires the employers to give 'G'(GOOD), 'A'(AVERAGE) or 'P'(POOR).

This program is expedted to be used by the Exam Department that eners student Names and their IC numbers besides the above details. This program should also be able to highlight the highest mark, lowest mark and failure rates for each program. Once the data have been recorded, they shall be stored as a data file for future reference.

Provide a solution to the above requirments using classes, an Object Oriented approach and C++ language.

Re: how to write this program?

Antony M Kancidrowski30-Jun-04 6:57

Antony M Kancidrowski

30-Jun-04 6:57

Here we go again! Another homework Sleepy | :zzz:

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fuity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Re: how to write this program?

Maximilien30-Jun-04 7:10

Maximilien

30-Jun-04 7:10

I charge $150/hour for a minimum of 4 hours.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: how to write this program?

palbano30-Jun-04 7:15

palbano

30-Jun-04 7:15

>> I charge $150/hour for a minimum of 4 hours.
Will you wear a dress and take it doggy style? Laugh | :laugh:

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Re: how to write this program?

Maximilien30-Jun-04 7:19

Maximilien

30-Jun-04 7:19

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: how to write this program?

palbano30-Jun-04 7:30

palbano

30-Jun-04 7:30

?? Sorry my glyph translator is in for repair.

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Re: how to write this program?

Ravi Bhavnani30-Jun-04 7:47

Ravi Bhavnani

30-Jun-04 7:47

> Re: how to write this program?
I think the best way would be to use a computer and some software.

/ravi

My new year's resolution: 2048 x 1536
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ravib@ravib.com

Re: how to write this program?

Johan Rosengren30-Jun-04 8:59

Johan Rosengren

30-Jun-04 8:59

I think you're supposed to ask that in the Lounge, where the better programmers hang out *mad laughter*

Re: how to write this program?

Wes Aday30-Jun-04 9:07

Wes Aday

30-Jun-04 9:07

Artificial intelligence is no match for natural
stupidity.

Re: how to write this program?

palbano30-Jun-04 9:14

palbano

30-Jun-04 9:14

< laughing tears />

"No matter where you go, there your are." - Buckaroo Banzai

-pete

remotely closing a modeless dialog

kfaday30-Jun-04 6:49

kfaday

30-Jun-04 6:49

Hello,
i'm developing a chat program. There's a vector of pointers to Dialogs. When i open a chat window, a NEW is called to that dialog, then i call create and showwindow to show the dialog. The windows are deleted when i close the program.
I'm not having trouble with that.
When i close a window, i send a message to the remote client to close the window. The remote client receives this message in a function from the dialog, and there i want to close the dialog (not the remote one):

CVentanaPizarra::OnClose();
CDialog::EndDialog(0);

In the OnClose I have the following:

void CVentanaPizarra::OnClose() 
{
	//stuff i do
	CDialog::OnClose();
}

If i don't use EndDialog, the dialog doesn't close. If i use EndDialog, when i want to open the dialog again, the program crashes.
i don't want to delete the memory, just hide the dialog, or close it in some kind of way. i know it works locally, as when i close with the X, then i can open it again, but not when i receive the message.
I searched in msdn, and it says EndDialog is or modal dialogs. So i tried DestroyWindow. I also tried ShowWindow(SW_HIDE) but it doen't work as well.
I'd really appreciate any kind of help you could give me.
Thanks in advance!

Re: remotely closing a modeless dialog

Johan Rosengren30-Jun-04 8:58

Johan Rosengren

30-Jun-04 8:58

If it is a modeless window - as I understand - then I should go for ShowWindow( SW_HIDE ). The drawbacks are that you might need to reinitialize controls when showing it again.

Note that first, you create the window with Create. Then you use ShowWindow( SW_SHOW / SW_HIDE ) for all showing and hiding - you don't call Create again.

Re: remotely closing a modeless dialog

User 665830-Jun-04 9:26

User 6658

30-Jun-04 9:26

ShowWindow will work fine, but keep in mind, the more windows you create (and eventually hide again), the more memory your app will comsume.
A better way would be to destroy the windows if you don't need them again and call delete this; in the PostNcDestroy-function of your dialogs.

regards

modified 12-Sep-18 21:01pm.

Inserting MUCH data using DataSet and DataAdapter?

Anonymous30-Jun-04 6:33

Anonymous

30-Jun-04 6:33

hiya

i'm trying to import ~1000 records into a database per transaction (1 transaction per second). I'm thinking that use of a DataSet / DataAdaptor will be a good idea, i.e. create the local DataSet and then commit this to the database. But due to the size of the database, around 1gb, i don't want to do make a local copy of the database every time i want to do an insert (i'm not changing the existing data). Is it possible to make an empty DataSet of the target database table, fill this with inserts, then commit this to database WITHOUT deleting the existing data?

Thanks!

J

Re: Inserting MUCH data using DataSet and DataAdapter?

Anonymous30-Jun-04 6:34

Anonymous

30-Jun-04 6:34

oh, using c++.net, ADO.net and SQLserver2k

j

Open default application for associated file

ness41630-Jun-04 6:19

ness416

30-Jun-04 6:19

Hi all:

I am writing a program where a list of wav files is presented to the user. The user may select one of these files and press a "play" button to hear the contents of their selected file. The problem is that I want to be able to automatically open that wav file in the machine's default application for wav files. For instance, if the user has set up their machine to use Windows Media Player as the default application for wav files, then when they click on my "play" button I would like to invoke WMP and automatically play the file. In fact, the behavior I want to implement is identical to the behavior seen when you double click on a file in Windows Explorer. The file will open inside the default application set for that type of file. Any help you can provide would be greatly appreciated.

Thanks!

Re: Open default application for associated file

palbano30-Jun-04 6:37

palbano

30-Jun-04 6:37

ShellExecute()

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Re: Open default application for associated file

ness41630-Jun-04 7:11

ness416

30-Jun-04 7:11

First of all, thank you very much! ShellExecute() did exactly what I needed.

Secondly, I assume the snoring smiley was used to indicate that this was a stupid question and I don't feel that was needed. If my assumption is incorrect, I apologize.

Re: Open default application for associated file

palbano30-Jun-04 7:14

palbano

30-Jun-04 7:14

>> indicate that this was a stupid question
Not at all! It gets asked here 2 to 3 times a week so it's boring is all. Actually this was much more intersting Big Grin | :-D

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Re: Open default application for associated file

Blake Miller30-Jun-04 7:34

Blake Miller

30-Jun-04 7:34

I agree.
They deserve extra credit for trying to do the right thing Big Grin | :-D

Transparent icons on a toolbar buttons

Daredevil30-Jun-04 6:08

Daredevil

30-Jun-04 6:08

Hello
I am using 256 color icons for my toolbar, however each of the icons has a white (or light grey) background which is ugly. How is it possible to make the icons transparent on any windows theme?
Thanks in advance.

Re: Transparent icons on a toolbar buttons

GermanGeorge1-Jul-04 2:00

GermanGeorge

1-Jul-04 2:00

i did not try this out, but I would start this way:

subclass the bar
overwrite the WM_CTLCOLOR of the bar
and set in the method
{
pDC->SetBkMode( TRANSPARENT );
return m_LeerBrush;
}

where m_LeerBrush=GetStockObject(HOLLOW_BRUSH)

Then use a transparent color for the icon

hope this helps

Re: Transparent icons on a toolbar buttons

Elmue16-Oct-09 9:22

Elmue

16-Oct-09 9:22

Hello

This will not work.
The toolbar internally works with old primitive bitmaps. (it comes from the Windows 3.1 times)
SetBkMode(TRANSPARENT) is useless for painting bitmaps. It is mainly for printing text.

What you have to do is assign an Imagelist to the toolbar.
The imagelist can maintain a primitive transparency using a mask.

With i_ImageList.SetBkColor(..) you can define with which color the "transparent" pixels are filled.
With i_ImageList.Add(AfxGetApp()->LoadIcon(IDI_ICON1) you can load transparent icons.
With i_Toolbar->GetToolBarCtrl().SetImageList(&i_ImageList) you assign the image list
And as LAST you can load the toolbar tooltips and Command IDs trom the resources
i_Toolbar.LoadToolBar(IDR_TOOLBAR1);
The images stored in the resources will be overridden with your imagelist.

Please note:
This is NOT real transparency with an Alpha channel!
You can NOT draw XP icons or alpha channel bitmaps with various levels of transparency!
And you can NOT draw on a multicolored backgound.

Elmü

Re: Transparent icons on a toolbar buttons

lakshmanguru23-Feb-10 11:40

lakshmanguru

23-Feb-10 11:40

Any suggestions? Still no luck.

if (!myBar.CreateEx(this, TBSTYLE_FLAT | TBSTYLE_TRANSPARENT, WS_CHILD | WS_VISIBLE | CBRS_TOP
		| CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC))
	{
		TRACE0("Failed to create toolbar\n");
		return -1;      // fail to create
	}

	myBar.LoadToolBar(IDR_TOOLBAR1);

	list1.Create(16, 16, ILC_COLOR32 | ILC_MASK, 2, 2);
        list1.SetBkColor(RGB(255,0,0));

	list1.Add(AfxGetApp()->LoadIcon(IDI_ICON1));
	list1.Add(AfxGetApp()->LoadIcon(IDI_ICON2));

        myBar.SendMessage(TB_SETIMAGELIST, 0 , LPARAM (list1.m_hImageList));

	myBar.EnableDocking(CBRS_ALIGN_ANY);
	EnableDocking(CBRS_ALIGN_ANY);
	DockControlBar(&myBar);

Re: Transparent icons on a toolbar buttons

Mahadev HK5-Aug-11 2:33

Mahadev HK

5-Aug-11 2:33

Hi, Try the below code. It will work for sure.

    if (!m_wndToolBarMaha.CreateEx(this, TBSTYLE_FLAT, WS_CHILD | WS_VISIBLE | CBRS_TOP
        | CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC ) )
    {
        TRACE0("Failed to create toolbar\n");
        return -1;      // fail to create
    }

    CWinApp* pApp= AfxGetApp();
    m_TBarImages.Create(32, 32, ILC_COLOR, 4, 4);
    m_TBarImages.SetBkColor( RGB( 192, 192, 192 ) );
    m_TBarImages.Add(pApp->LoadIcon(IDI_ICON1));
    m_TBarImages.Add(pApp->LoadIcon(IDI_ICON2));
    m_TBarImages.Add(pApp->LoadIcon(IDI_ICON3));
    m_wndToolBarMaha.GetToolBarCtrl().SetImageList(&m_TBarImages);

    m_wndToolBarMaha.LoadToolBar(IDR_MAINFRAME);

    // TODO: Delete these three lines if you don't want the toolbar to be dockable
    m_wndToolBarMaha.EnableDocking(CBRS_ALIGN_ANY);
    EnableDocking(CBRS_ALIGN_ANY);
    DockControlBar(&m_wndToolBarMaha);

Mahadev

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