C / C++ / MFC

Re: Error specify the lpszIcon in the MSGBOXPARAM using ::LoadIcon

31-Jul-08 20:15

In the MSDN, it says below:
lpszIcon
Identifies an icon resource. This parameter can be either a null-terminated string or an integer resource identifier passed to the MAKEINTRESOURCE macro.
To load one of the standard system-defined icons, set the hInstance member to NULL and set lpszIcon to one of the values listed with the LoadIcon function.

This member is ignored if the dwStyle member does not specify the MB_USERICON flag.

        MSGBOXPARAMS msgparam = {0};
	msgparam.cbSize = sizeof(MSGBOXPARAMS);
	msgparam.hwndOwner = NULL;
	msgparam.lpszText = _T("text");
	msgparam.lpszCaption = _T("caption");
	msgparam.dwStyle = MB_USERICON | MB_OK;
	msgparam.hInstance = NULL;
	msgparam.lpszIcon = ::LoadIcon(NULL, IDI_WINLOGO); <font color="blue">I want to use as the MSDN says.Actually I know it will compile error.</font>
	::MessageBoxIndirect(&msgparam);
<pre>

Cedric Moonen31-Jul-08 20:43

Cedric Moonen

31-Jul-08 20:43

What is the problem ? What is your question in fact ?
Di you have a compilation error ? If yes, why don't you simply put the exact error message so we can try to help you ?

Cédric Moonen
Software developer

Charting control [v1.4]
OpenGL game tutorial in C++

Re: Error specify the lpszIcon in the MSGBOXPARAM using ::LoadIcon

fantasy121531-Jul-08 21:23

Re: Error specify the lpszIcon in the MSGBOXPARAM using ::LoadIcon [modified]

31-Jul-08 21:23

//msgparam.lpszIcon = ::LoadIcon(NULL, IDI_WINLOGO);
msgparam.lpszIcon = MAKEINTRESOURCE(IDI_WINLOGO);

The MSDN has fooled me, or I misunderstand the MSDN words, I should just use MAKEINTRESOURCE, not using ::LoadIcon.

CPallini31-Jul-08 21:20

CPallini

31-Jul-08 21:20

msgparam.lpszIcon = (LPCTSTR)::LoadIcon(NULL, IDI_WINLOGO);

[added]
BTW: see here [^].
[/added]

[added]
BTW2: Xing Chen's solution [^] actually works.
[/added]

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

modified on Friday, August 1, 2008 3:52 AM

Re: Error specify the lpszIcon in the MSGBOXPARAM using ::LoadIcon

Xing Chen31-Jul-08 21:33

Xing Chen

31-Jul-08 21:33

set lpszIcon to one of the values listed with the LoadIcon function means:

lpszIcon can be one of these value:
IDI_APPLICATION
IDI_ASTERISK
IDI_ERROR
IDI_EXCLAMATION
IDI_HAND
IDI_INFORMATION
IDI_QUESTION
IDI_WARNING
IDI_WINLOGO

so you can use them directly.
msgparam.lpszIcon = IDI_WINLOGO;

Creating a toolbar in a console application

FloatingMarc31-Jul-08 20:00

FloatingMarc

31-Jul-08 20:00

Hello,

I made a dll that has a bunch of functions called from a console application. One of them creates a CFrameWnd window. Inside the function that creates my CFrameWnd, I can create a CToolBar object. However I now want the user of the dll (the creator of the console application) to be able to attach a customized CToolBar object to that window (instead of the default CToolBar object that I created during window creation inside the dll). So I thought I simply create the customized CToolBar object in the client application (console application) in the same way I did in the dll function. That however does not seem to work: in release mode the toolbar appears, but doesn't have any bitmap, in debug mode, I get debug assertion errors because of unexisting resource or instance handles.
Following few lines in my console application are impossible to execute without assertion errors in debug mode:

CToolBar* toolBar=new CToolBar();
toolBar->CreateEx((CFrameWnd*)dllFunctionGetFrameWnd(),TBSTYLE_FLAT,WS_CHILD|WS_VISIBLE|CBRS_SIZE_DYNAMIC|CBRS_TOP|WS_CLIPCHILDREN|WS_CLIPSIBLINGS);
toolBar->LoadToolBar(IDR_TOOLBAR1);
toolBar->SetWindowText("Toolbar");
toolBar->EnableDocking(CBRS_ALIGN_TOP);

Anyone knows a workaround? Or can anyone propose an alternative solution to my problem?

Re: Creating a toolbar in a console application

Mark Salsbery1-Aug-08 8:29

Track the amount of data transferred while I am on net, both sent and recieved.

1-Aug-08 8:29

FloatingMarc wrote:
a bunch of functions called from a console application. One of them creates a CFrameWnd window

You need to look at the assertions and the code where they occur.
You should see what's going wrong.

You need to make sure you're making the right kind of DLL if
you're using MFC in a DLL. All the info you need to do this
can be found here: Kinds ofDLLs[^]

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

vicky0000031-Jul-08 19:12

vicky00000

31-Jul-08 19:12

Hai all
Just i want to develop a apllication that track the amount of data transferred while I am on net, both sent and recieved. It will also keep monthly records on each time log-in basis, so that I can get my usage data.

If You have any Ideas pleas share with me

Thanks & Regards
Vicky000000

Re: Track the amount of data transferred while I am on net, both sent and recieved.

Haroon Sarwar31-Jul-08 19:26

Haroon Sarwar

31-Jul-08 19:26

maybe this will help:

http://www.codeproject.com/KB/cs/mydumeter.aspx[^]

Re: Track the amount of data transferred while I am on net, both sent and recieved.

David Crow1-Aug-08 3:26

David Crow

1-Aug-08 3:26

vicky00000 wrote:
...track the amount of data transferred while I am on net, both sent and recieved.

Have you looked here?

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

save excel file

gentleguy31-Jul-08 18:06

gentleguy

31-Jul-08 18:06

Dear all

how to save an excel file instead of .txt file in c++? anyone has such code or suggestion?thanks a lot

gentleguy

Re: save excel file

emimmortal31-Jul-08 18:20

emimmortal

31-Jul-08 18:20

Excel.Application COM may be solve your problem.

Emimmortal

Re: save excel file

FloatingMarc31-Jul-08 20:18

FloatingMarc

31-Jul-08 20:18

Try using the *.csv fileformat. (comma separated values). It is still a text file but can very easily be generated and imported into excel

When click on the close button on the righttopmost dialog, how to hide the dialog not close the app?

fantasy121531-Jul-08 16:03

Re: When click on the close button on the righttopmost dialog, how to hide the dialog not close the app?

31-Jul-08 16:03

My goal:
when user click on the 'close' red check button on the right top most dialog, I want to hide the main dialog of the app, show an icon in the tray(these codes work fine, not showing).

My codes are below, It exits the app anyway.

BOOL CMyVIPTestDlg::PreTranslateMessage(MSG* pMsgIn) 
{
	if (pMsgIn->message == WM_SYSCOMMAND)
	{
		if (pMsgIn->wParam == SC_CLOSE)
		{
			this->ShowWindow(FALSE);
			return TRUE;
		}
	}
	
	BOOL bRet = CDialog::PreTranslateMessage(pMsgIn);
	return bRet;
}

Mark Salsbery31-Jul-08 16:23

Re: When click on the close button on the righttopmost dialog, how to hide the dialog not close the app?

31-Jul-08 16:23

If you're using MFC, why not respond to the message the MFC way?

// Add to dialog's message map
ON_WM_SYSCOMMAND()

// add the handler to the dialog class
void CMyVIPTestDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if (nID == SC_CLOSE)
	{
		ShowWindow(SW_HIDE);
		return;
	}

	CMyDialog::OnSysCommand(nID, lParam);
}

That works fine for me - I just tested it.

It's always curious to me how often the PreTranslateMessage() method is misused. Smile | :)

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

fantasy121531-Jul-08 17:09

Re: When click on the close button on the righttopmost dialog, how to hide the dialog not close the app?

31-Jul-08 17:09

Thanks for your reply.
Acctually, I think the PreTranslateMessage is the most misusable method.
When don't know where to handle the message, the first place to place the code is the PreTranslateMessage.

Mark Salsbery1-Aug-08 5:31

1-Aug-08 5:31

fantasy1215 wrote:
When don't know where to handle the message, the first place to place the code is the PreTranslateMessage.

That's why it's a good idea to know how to use the documentation.

All the MFC message map macros for WM_ window messages start with
"ON_WM_". If the message map macro doesn't exist for a given message,
there's always ON_MESSAGE, which will handle any message.

Smile | :)

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

#define statements

MarkB77731-Jul-08 15:55

MarkB777

31-Jul-08 15:55

Hi,

I was wondering if someone could clear this up for me.

Consider the below statement:

<br />
#define randomise(i) rand() % (i)<br />

The way I see this, both randomise and rand are functions.

But a search online made me think randomise could also be deemed a macro.

Is randomise, in computer science terms, a function or a macro (or both)?

Cheers,

Mark Brock

Click here to view my blog

Mark Salsbery31-Jul-08 16:13

31-Jul-08 16:13

randomize is a macro.

rand is a function in the CRT library, but in the code you've shown,
it's just a token used during expansion of the randomize macro by the
pre-processor.

The VC/VC++ docs call your randomize macro a "function-like macro".

That's my take on it Smile | :)

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

MarkB77731-Jul-08 16:24

MarkB777

31-Jul-08 16:24

Hi Mark,

Thanks for your reply.

Looking at the definition for a function:

"In computer science, a subroutine (function, method, procedure, or subprogram) is a portion of code within a larger program, which performs a specific task and can be relatively independent of the remaining code"

Could I argue that by calling randomise() it's performing a "specific task"?

The difference between a macro and a function seems to be vague.

Thanks,

Mark Brock

Click here to view my blog

Mark Salsbery31-Jul-08 16:30

31-Jul-08 16:30

MarkBrock wrote:
Could I argue that by calling randomise() it's performing a "specific task"?

Of course you could, but you'd be wrong LOL - just kidding Smile | :)

The thing is, you can't "call" randomize. The compiler pre=processor replaces
occurrences of randomize(n) to the token (macro expansion), so the actual code
called at runtime is rand() % (i).

Note that more parenthesis should probably be used here...

#define randomize(i) (rand() % i)

... just in case you use it in a complex expression...

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

CPallini31-Jul-08 21:17

CPallini

31-Jul-08 21:17

MarkBrock wrote:
The difference between a macro and a function seems to be vague.

Maybe for computer science, but not for the compiler (and developer) point of view. Roll eyes | :rolleyes:

David Crow1-Aug-08 3:18

David Crow

1-Aug-08 3:18

As far as the compiler is concerned, randomise() doesn't even exist.

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch