C / C++ / MFC

How to call a dialog box on Help button on a property sheet.?

25-Jun-04 2:27

Unrelated to MFC, the default stack size is 1MB.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Stupid question

Jonathan [Darka]25-Jun-04 0:30

Jonathan [Darka]

25-Jun-04 0:30

Hi all,

I am currentyl writing a hex editor (yep, as if there are not enough already) but my brain has gone to sleep and for the life of me I can't think of how to do the following...

1. Keeping track of changes for undo/redo functionality, such as inserting / deleting, etc.

any help would be gratefully received.

regards,
jonathan

Re: Stupid question

V.25-Jun-04 1:46

25-Jun-04 1:46

At the moment you change something save first in an array or Vector?

preferebly with a fixed number?

Something like that.

if you are working on an hexeditor maybe you should save some other data as well (eg. what kind of file was it) I don't know.

Good luck.

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

Re: Stupid question

Henry miller25-Jun-04 3:25

Henry miller

25-Jun-04 3:25

There was an artical here on code project THIS WEEK that would have told you how.

If you still don't get it after reading that artical, give some indication that you have read it, and all the articals it links. Your right this is a stupid question, but it isn't the question itself, it is your mythod of asking first instead of doing some research first that is stupid.

When you have a question PLEASE start with google. If it is coding related search code project (I have other places in my bookmarks that are sometimes useful, but code project is a good start).

Sorry about the tone, but I feel you deserve it. Do better next time and we will be happy to anser your questions. (If we know)

Re: Stupid question

Jonathan [Darka]25-Jun-04 4:22

Jonathan [Darka]

25-Jun-04 4:22

Henry,

Chill out! Don't worry about the tone, I deserved it.

But maybe get yourself a spell checker next time Smile | :)

regards,

Darka

CoUninitialize Problem

ITMan24-Jun-04 22:42

ITMan

24-Jun-04 22:42

Hi,
I've developed a NT Service using ATL. My service performs some functionality which uses database, XML files and HTTP communication. For database access I am using a COM component which I developed. Though the functionality intended by the service is performed ok, but the service fails to stop after running for sometime. After digging into the problem I found out that the service waiting for returning CoUninitialize() method which is taking too much time. I've ensured that I release all the COM interfaces before reaching CoUninitialize() method.
Can anybody suggest me what could be potential problem.
Thanks
Abhishek.

Rajesh_K_Sharma24-Jun-04 21:17

Rajesh_K_Sharma

24-Jun-04 21:17

Hi,
I am a new in MFC.
I want to call a dialog box on Help button on a propety sheet in MFC.How can I do this? Please help me.

rajesh

Re: How to call a dialog box on Help button on a property sheet.?

V.24-Jun-04 21:21

24-Jun-04 21:21

depends on what you would like to do.
If you just want to display a message:
AfxMessageBox("somestring"); will do.
If you would like more options create your new dialog box and do.

yourdialogclassobjectname.DoModal();

DoModal returns an int so you can catch IDOK or IDCANCEL if you like.

Hope this helps.

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

Re: How to call a dialog box on Help button on a property sheet.?

David Crow25-Jun-04 2:33

25-Jun-04 2:33

In the property sheet, override the OnCommand() method. Then add the following code:

if (BN_CLICKED == HIWORD(wParam) && IDHELP == LOWORD(wParam))
{
    // help stuff here, like calling WinHelp()
    return TRUE;
}
 
return CPropertySheet::OnCommand(wParam, lParam);

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Problem in release mode

nnvidya24-Jun-04 20:23

24-Jun-04 20:23

"In the MFC application the dialog is initialised or called using Create function like this

dlg->Create(IDD_DIALOG, this);

This will call the OnInitDialog() function automatically, when the application is configured in Debug mode, but it is not called when it is in Release mode. Can anybody tell me what could be the reason?"

thanks

vidya

David Crow25-Jun-04 2:40

25-Jun-04 2:40

How are you verifying that the OnInitDialog() method is not being called?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

nnvidya28-Jun-04 18:43

28-Jun-04 18:43

In debug mode i can confirm this using break point but in release mode i put one messagebox inside the oninitdialog fucntion which didnt not called in release mode.....and in that function only i am showing the controls in dialog like this....
e.g m_Combo.ShowWindow(SW_SHOW);

since oninitdialog is not called my controls in the dialog are displayed.

vidya

David Crow29-Jun-04 2:15

29-Jun-04 2:15

By chance are there any ActiveX controls on the dialog? What happens if you use a modal, instead of a modeless, dialog?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

nnvidya29-Jun-04 20:51

29-Jun-04 20:51

Yes ....there is an Active-X control in that dialog...
here i am explaining in detail.....
This dialog is added as a property page into the propertysheet. This dialog contains 2 static texts, 2 combo boxes and one MSChart Active-X control.
and in release mode all are not displayed where they are shown in
OnInitDialog() function which has been not called.

Thanks

vidya

David Crow30-Jun-04 2:34

30-Jun-04 2:34

Just for grins, remove the ActiveX control from the dialog template and see if that makes a difference. If it does, it sounds like the ActiveX control is not properly registered, or a call to AfxEnableControlContainer() has not been made (correctly).

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

nnvidya30-Jun-04 19:16

30-Jun-04 19:16

I have deleted the mschart active x control and tested still the other controls like combo boxes are not displayed. The active x control has been registered in windows registry using the following command

regsvr32 C:\winnt\system32\mschrt20.ocx

and the function AfxEnableControlContainer() is also called in InitInstance() function and the required header file #include <afxdisp.h> is also included in the stdafx.h file.

Still the problem exists. Please help me to solve this problem as soon as possible. we have a release by this week end.

thanks

vidya

nnvidya30-Jun-04 19:18

30-Jun-04 19:18

I have deleted the mschart active x control and tested still the other controls like combo boxes are not displayed. The active x control has been registered in windows registry using the following command

regsvr32 C:\winnt\system32\mschrt20.ocx

and the function AfxEnableControlContainer() is also called in InitInstance() function and the required header file afxdisp.h is also included in the stdafx.h file.

Still the problem exists. Please help me to solve this problem as soon as possible. we have a release by this week end.

thanks

vidya

David Crow1-Jul-04 2:12

1-Jul-04 2:12

nnvidya wrote:
This dialog is added as a property page into the propertysheet.

Does that mean you are using a CPropertyPage (instead of a CDialog) object? If so, have you looked at the OnSetActive() method?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

nnvidya1-Jul-04 19:06

1-Jul-04 19:06

sorry to tell you that we are using CDialog only....not property page....

the problem is CResults is a class devired from CPropertyPage, and to this property page.....at the down i am adding 4 more pages (CChart, CSummary...etc) which are derived from CDialog.
Dialogs are not displayed in CChart, which dont have OnSetActive() function as it is a CDialog and here i am using Active-X control.

vidya

David Crow2-Jul-04 2:52

2-Jul-04 2:52

nnvidya wrote:
we are using CDialog only....not property page
CResults is a class devired from CPropertyPage

Don't these two statements contradict each other?

nnvidya wrote:
at the down...

I'm not sure what this means.

It sounds to me like you have a CPropertySheet-based application, with four CPropertyPage objects on the sheet. Is that correct?

You may e-mail me the project if you wish where I'll be more apt to tell what is wrong. Send a PM for my address.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen