AFX_MANAGE_STATE(AfxGetStaticModuleState()); - C / C++ / MFC Discussion Boards

Re: Checkbox?

David Crow8-Jan-07 8:27

David Crow

8-Jan-07 8:27

Are you using MFC?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: Checkbox?

Larsson8-Jan-07 8:53

Larsson

8-Jan-07 8:53

Yes

Re: Checkbox?

David Crow8-Jan-07 9:01

David Crow

8-Jan-07 9:01

Via ClassWizard (Ctrl+W), provide a handler for the BN_CLICKED notification message. In it, call the button's GetCheck() method to get the checked state of the button.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: Checkbox?

PJ Arends8-Jan-07 8:31

PJ Arends

8-Jan-07 8:31

Larsson wrote:
if it uncheck when I press it I need to bring up a new dialog window

Do you want it to be checked also? If so set the style to BS_AUTOCHECKBOX when you create it. Handle the BN_CLICKED command and use GetCheck() to see if the button was checked or unchecked.

You may be right
I may be crazy
-- Billy Joel --

Within you lies the power for good, use it!!!

Re: Checkbox?

Larsson8-Jan-07 8:55

Larsson

8-Jan-07 8:55

Can you give me an exemple? And yes I want it to be checked.

Re: Checkbox?

Stephen Hewitt8-Jan-07 11:32

Stephen Hewitt

8-Jan-07 11:32

Use ClassWizard to add a BOOL for the checkbox named m_bCheck. Double-click on the checkbox to add a handler. Populate the handler with code like the following:

void CMFCDialogDlg::OnCheck1() 
{
	UpdateData(TRUE);
	if (m_bCheck)
	{
		// Show your dialog.
		AfxMessageBox(_T("Dialog goes here..."));
	}

}

Steve

Re: Checkbox?

Larsson8-Jan-07 12:51

Larsson

8-Jan-07 12:51

Thanks that help.

AFX_MANAGE_STATE(AfxGetStaticModuleState());

Niklas L8-Jan-07 7:40

Niklas L

8-Jan-07 7:40

Hi
I have a dll with exported functions, which I protect with AFX_MANAGE_STATE(AfxGetStaticModuleState()). Fine. Now, to those functions I send a callback function as a param. This callback function is in the exe. Is there a corresponding way to restore the module state when I get back into the exe, or do I need to roll up my sleves for this one?

It's a requirement that the writer of the dll shouldn't be bothered with restoring the state before calling the callbacks, but just setting his own state correctly using the AFX_MANAGE_STATE macro.

tia
Niklas

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Re: AFX_MANAGE_STATE(AfxGetStaticModuleState());

Mark Salsbery8-Jan-07 8:37

Mark Salsbery

8-Jan-07 8:37

Do you really need to do this? Are you accessing resources in the dll and the callback?

Mark

Re: AFX_MANAGE_STATE(AfxGetStaticModuleState());

Niklas L8-Jan-07 8:52

Niklas L

8-Jan-07 8:52

Yes.

The dlls may supply dialogs, as well as calling one of the callbacks to invoke the exes dialogs (along with other things)

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Re: AFX_MANAGE_STATE(AfxGetStaticModuleState());

Mark Salsbery8-Jan-07 9:02

Mark Salsbery

8-Jan-07 9:02

I would think you'd just need AFX_MANAGE_STATE(AfxGetStaticModuleState()) at the top of the
callback function.

As long as the module handle is set properly so MFC can find and load resources when it needs to.

This can also be overriden by loading the resources yourself if you need to.

Mark

Re: AFX_MANAGE_STATE(AfxGetStaticModuleState());

Niklas L8-Jan-07 10:34

Niklas L

8-Jan-07 10:34

I already tried that. AfxGetStaticModuleState() only seems to work in dlls. It returns null for resource and instance handles.

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Re: AFX_MANAGE_STATE(AfxGetStaticModuleState());

Niklas L8-Jan-07 10:56

Niklas L

8-Jan-07 10:56

After some investigation I found that
AFX_MODULE_STATE* pPrevModuleState = AfxSetModuleState(NULL);
on entry, and
AfxSetModuleState(pPrevModuleState);
on exit seems to work. This will allow me to load the correct resources and also use AfxGetApp() and its compadres.

(though I'm not entirely convinced yet)

thanks for your time.
Niklas

home

Re: AFX_MANAGE_STATE(AfxGetStaticModuleState());

Mark Salsbery8-Jan-07 11:08

Mark Salsbery

8-Jan-07 11:08

That sounds good Smile | :)

Just in case you haven't seen this:
How to properly export functions by using the MFC Shared Library[^]
Outlines the few things that can fail if it's not right.

Mark

Impossible to start specified application...

ayol121228-Jan-07 6:34

ayol12122

8-Jan-07 6:34

Hi all guys,
I've a big trouble with my application.
It's based on some lib that must be compiled using setting MD[DLL Multithread].
The application runs without problems on my two pc that have VisualStudio 2003 & 2005 installed.
But i tried it on a pc without any visualstudio and it cannot start:
it gives this kind of error:
"Impossible to start specified application. Application configuration is not correct. A new installation of application could solve the problem".

I imported mfc80.dll thinking that here was the problem...but it doesn't solve!

Please help
Sigh | :sigh:

Re: Impossible to start specified application... [modified]

Mark Salsbery8-Jan-07 7:10

Mark Salsbery

8-Jan-07 7:10

Try installing this:
Microsoft Visual C++ 2005 Redistributable Package[^]

-- modified at 13:15 Monday 8th January, 2007

More info: Redistributing Visual C++ Files[^]

Re: Impossible to start specified application...

ayol121228-Jan-07 10:35

ayol12122

8-Jan-07 10:35

thank you very much!!
it solved the problem!

Can't Create New Class with Wizard

Reagan Conservative8-Jan-07 6:33

Reagan Conservative

8-Jan-07 6:33

Is there some reason why, when I create a new dialog (CMyKeypad) that I get an error message from the Class Wizard stating:

"Unable to open the files (directory path) for class CMyKeypad".

Thanks

John P.

Re: Can't Create New Class with Wizard

Trollslayer8-Jan-07 6:35

Trollslayer

8-Jan-07 6:35

Can you manually (e.g. with Windows Explorer) create a file in that location?

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

Re: Can't Create New Class with Wizard

Reagan Conservative8-Jan-07 6:43

Reagan Conservative

8-Jan-07 6:43

I can create a Word file in that directory with no problem

John P.

Terminate application during creation

baerten8-Jan-07 5:01

baerten

8-Jan-07 5:01

Hi,

During the creation of the MainFrame, i call a function called StartUp,
which initialises different configs.

If something goes wrong during this initialisation, i would close the application.

an exit(1) terminates hardly the program and provokes MemoryLeaks ( Destructor isn't called )

Anyone an idea?

Thanks Smile | :)

Re: Terminate application during creation

David Crow8-Jan-07 5:04

David Crow

8-Jan-07 5:04

baerten wrote:
an exit(1) terminates hardly the program and provokes MemoryLeaks ( Destructor isn't called )

Which means you should not be using exit(). Send a WM_CLOSE message instead.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: Terminate application during creation

jhwurmbach8-Jan-07 5:38

jhwurmbach

8-Jan-07 5:38

So you are in (your CFrameWnd-derived class) CMainFrame::OnCreate?

Simply

return -1<br />

this is the official notification that the creation went wrong.

See the MFC-standard code:

if (!m_wndToolBar.CreateEx( this, TBSTYLE_FLAT, WS_CHILD | WS_VISIBLE | CBRS_TOP
		| CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC) ||
		!m_wndToolBar.LoadToolBar(IDR_MAINFRAME))
	{
        AfxMessageBox( "Failed to create wndToolBar\n", MB_ICONERROR);
		return -1;      // fail to create
	}

"We trained hard, but it seemed that every time we were beginning to form up into teams we would be reorganised. I was to learn later in life that we tend to meet any new situation by reorganising: and a wonderful method it can be for creating the illusion of progress, while producing confusion, inefficiency and demoralisation."

-- Caius Petronius, Roman Consul, 66 A.D.

Thanks

baerten9-Jan-07 21:35

baerten

9-Jan-07 21:35

Thanks you two Smile | :)

ADO cannot restore connection

Daniel Kanev8-Jan-07 4:47

Daniel Kanev

8-Jan-07 4:47

I am using ADO to connect to an ORACLE database. After a network failure (disable/enable network interface or unplug/plug network cable) ADO cannot restore the connection. I close the connection, then even create a new one with CoCreateInstance but queries rise exception
ORA-03114: not connected to ORACLE. Do you know how to solve this?

modified 8-Mar-17 3:50am.

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