C / C++ / MFC

25-Oct-01 9:46

Nope! I did on override OnCmdMsg anywhere....I haven't over ridden any functions!

Tomasz Sowinski25-Oct-01 9:57

Tomasz Sowinski

25-Oct-01 9:57

I have no idea what have you screwed. Do other menu items work?

Tomasz Sowinski -- http://www.shooltz.com

25-Oct-01 10:11

Well I know, it is all my fault. I haven't really understood how to add a message handler for a menu bar item. I just created an empty MFC project and then added a new menu item (ID_FILE_SOMEITEM).

Then through the Class Wizard on Mesage Maps tab I chose the view class CMyAppView and chose ID_FILE_SOMEITEM in ObjectIDs and then clicked on Command in Messages and clicked the Add Function button.

The class wizard created the function OnFileListen.
I added the same AfxMessageBox("Code Reachable"); line inside the function and when I built the project.....I was expecting it to give me a message box alert on clicking File>SomeItem

But Nothing Happens. Evidently I am making a pretty basic mistake in creation of message handlers.
Tell me what to correct.

Tomasz Sowinski25-Oct-01 10:16

Tomasz Sowinski

25-Oct-01 10:16

I think you've performed the necessary steps. Is the menu item enabled or it remains grayed?

Tomasz Sowinski -- http://www.shooltz.com

25-Oct-01 10:22

Ofcourse it is enabled!!!!

Christian Graus25-Oct-01 10:05

25-Oct-01 10:05

Go into the class wizard for the view class, click on the ID_FILELISTEN item and then tell me if COMMAND or UPDATE_COMMAND_UI is in bold ?

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

25-Oct-01 10:17

Yes COMMAND is in bold...with the Member function

OnFileListen (ON_ID_FILE_LISTEN:COMMAND)

Christian Graus25-Oct-01 10:30

25-Oct-01 10:30

Then there is no reason in the world for it not to work. Have you done any manual editing to the files in the command handler area EVER ? Because if you have, it's possible you've confused the Class Wizard. What references to ID_FILE_LISTEN are there in the .h and .cpp file ?

Oh, it's generally good not to ask the same question over and over, especially when two people are already helping you.

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

25-Oct-01 10:38

I am sorry, but this is really annoying. Apparently I've done everything right.
I had to implement it in a real project, but since it was creating complications, I tried this on an empty (new) project.

I just created a new project, added an item to the menu bar, then used the Class wizard to create a message handling function. Inside the function that the Class wizard created, I just added one line
AfxMessageBox("Code Reachable");

That's it!

But it just does not seem to work!

Christian Graus25-Oct-01 10:46

25-Oct-01 10:46

I understand what you've done, I want to know if you search all files for the ID_FILE_LISTEN, what comes up. You should have al ine like this in the header:

afx_msg void OnFileListen();

and in your .cpp file

BEGIN_MESSAGE_MAP(CMyView, CView)
	//{{AFX_MSG_MAP(CMovieDatabaseView)
	ON_COMMAND(ID_FILE_LISTEN, OnFileListen)
// edited for brevity
END_MESSAGE_MAP()

These are what links the message to the command, are they there ?

As to being frustrated, I can appreciate that, but I'm right here trying to help, and Tomasz also seems to be online, so there is no reason to keep asking while you wait for our replies, it only clogs up the forum with the same question over and over. If I ask a question and don't get an answer, I usually wait at least a day to ask again.

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

25-Oct-01 10:51

Ok I searched all the files for ID_FILE_LISTEN
Here is what I got

Searching for 'ID_FILE_LISTEN'...
C:\Sockets Programming\111\111.rc(82): MENUITEM "Listen Port", ID_FILE_LISTEN
C:\Sockets Programming\111\111View.cpp(23): ON_COMMAND(ID_FILE_LISTEN, OnFileListen)
C:\Sockets Programming\111\resource.h(5):#define ID_FILE_LISTEN 0
3 occurrence(s) have been found.

Then I searched all the files for OnFileListen and here is what I got

Searching for 'OnFileListen'...
C:\Sockets Programming\111\111View.cpp(23): ON_COMMAND(ID_FILE_LISTEN, OnFileListen)
C:\Sockets Programming\111\111View.cpp(105):void CMy111View::OnFileListen()
C:\Sockets Programming\111\111View.h(51): afx_msg void OnFileListen();
3 occurrence(s) have been found.

Christian Graus25-Oct-01 11:51

25-Oct-01 11:51

I think I may have it. Is your app an MDI application ? Because if it is, you need to click File:New in order to have an instance of your view class to execute.

Have you tried putting a breakpoint in your message handler and tracing to see if it somehow gets there but fails to show a dialog ?

Apart from that, I'd be overriding WM_COMMAND and doing something like this

if (LOWORD(wParam)== ID_FILE_LISTEN) 
{
 AfxMessageBox("You clicked ID_FILE_LISTEN");
}

I'd also try adding the handler to the CMainFrame class, or adding them for other handlers not in the ID_FILE_ domain, just to try and narrow down where it's going wrong.

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

Fazlul Kabir25-Oct-01 12:02

Fazlul Kabir

25-Oct-01 12:02

I think I know the problem.
Change the menu ID to something nonzero (in C:\Sockets Programming\111\resource.h(5))

#define ID_FILE_LISTEN 32771

Hope this helps.

// Fazlul

Get RadVC today! Play RAD in VC++
http://www.capitolsoft.com

25-Oct-01 15:23

How do you know my project is in c:\Sockets Programming\111???

Christian Graus25-Oct-01 15:32

25-Oct-01 15:32

Because you posted it when you posted the results of your search.

He's right, I should have looked closer at the post, but I wasn't thinking along those lines.

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

VC++

25-Oct-01 8:34

How can i detect and count two blank circles on a bitmap?
My project is to mark quiz MCQs.

Re: VC++

Christian Graus25-Oct-01 10:00

dialog app update windows

25-Oct-01 10:00

What form do your bitmaps take - have they been scanned ? What does MCQ stand for ?

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

Re: VC++

25-Oct-01 10:18

MCQ = Multiple Choice Questions Wink | ;)

25-Oct-01 7:27

I'm in the process of developing an application that has two dialog windows open at one time.

I would like to update both of these windows every x seconds, but can only seem to do this when the user clicks a button.

Any idea on how I might get this to update without intervention from the user?

Later I'm going to add in a socket and get data from there to update the windows.

Thanks for any help

C^hris L^osinger25-Oct-01 7:29

C^hris L^osinger

25-Oct-01 7:29

Have you tried starting a timer (SetTimer, OnTimer, etc.) ?

-c

Smaller Animals Software, Inc.
http://www.smalleranimals.com

#realJSOP25-Oct-01 7:29

#realJSOP

25-Oct-01 7:29

Are you using MFC?

Is this a dialog-based application, or does it have a parent froame window (SDI/MDI)?

To hell with those thin-skinned pillow-biters. - Me, 10/03/2001

Carlos Antollini25-Oct-01 8:42

Carlos Antollini

25-Oct-01 8:42

If you are using a MDI or SDI application you can use the Run function. Stopping every x seconds.
If you are in a Dialog App, you can use the SetTimer function....

Best Regards... Big Grin | :-D

Chau!!!

Carlos Antollini.