C / C++ / MFC Discussion Boards

Bob Stanneveld31-May-03 6:39

31-May-03 6:39

Hello,

I don't like wizards, so I decided to things on my own. I set up a project with a formview. I didn't do anything out of the ordinary, but the CWnd::Create() method just won't be called!
Can anyone please tell me where that method is called and what I have to do for that?

thanks

Re: Problems with MFC (Without wizard)

Vikram A Punathambekar31-May-03 8:51

Vikram A Punathambekar

31-May-03 8:51

Give us the details, pal, and we'll be glad to help you. Why don't you post (part of) your code?

HINT: Check the return value of Create() and see if it returns 0 - if it does, something's terribly wrong.

Hope this helps (give the code, though) Smile | :)

,

Vikram.
-----------------------------
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"Good lord you yanks are getting worse than a defensive VB developer at a C++ conference." - Paul Watson in the Lounge, 31 May 2003.

"Do not give redundant error messages again and again." - A classmate of mine, while giving a class talk on error detection in compiler design.

Re: Problems with MFC (Without wizard)

Bob Stanneveld31-May-03 9:00

Bob Stanneveld

31-May-03 9:00

Hi,

I just don't know where to call Create(), I can't even find it in the wizards generated code!

regards,

Re: Problems with MFC (Without wizard)

Vikram A Punathambekar31-May-03 9:13

Vikram A Punathambekar

31-May-03 9:13

iumentum wrote:
I just don't know where to call Create()

You should do it typically (but not always) from OnCreate() in the class that you derive from CWnd or CFrameWnd.

iumentum wrote:
I can't even find it in the wizards generated code

AFAIK, the wizard has no use for this. You'll have to enter it manually. Don't forget to check the return value.

TIP: Get MSDN, and a good book. I'd recommend "Programming Windows with MFC" by Jeff Prosise.

Vikram.
-----------------------------
My site due for a massive update.

"Good lord you yanks are getting worse than a defensive VB developer at a C++ conference." - Paul Watson in the Lounge, 31 May 2003.

"Do not give redundant error messages again and again." - A classmate of mine, while giving a class talk on error detection in compiler design.

List Box Style

georgiek5031-May-03 6:00

georgiek50

31-May-03 6:00

What is the necessary style the a list box must have to display characters such as this correctly: å, ä, ö, Å, Ä

Or is it just a matter of Windows regional settings?

Re: List Box Style

Ravi Bhavnani31-May-03 8:47

Ravi Bhavnani

31-May-03 8:47

I think the only requirement is that you set its font to one that's capable of displaying these chars. Arial seems like a good bet, but I suspect Tahoma (the now-standard Microsoft font) would also work.

/ravi

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CButton question

rpadrela31-May-03 5:26

rpadrela

31-May-03 5:26

I want a button to be drawn fully red, do i need to create my own button class ? Owner-draw button is the way to go ? If so, can you point me too any good article that talks about it ?

Thanks

Re: CButton question

valikac31-May-03 7:01

valikac

31-May-03 7:01

One solution is ownerdraw via WM_CTLCOLOR.

Kuphryn

Re: CButton question

Joan M1-Jun-03 21:01

Joan M

1-Jun-03 21:01

You can also take a look here in CP at the Button articles in order to find out some classes already done... CButton ST is a good class...

HTH...

How can I terminate another application?

ATC31-May-03 4:13

ATC

31-May-03 4:13

Hi,

I have a VC++ application that launches another application in Run Time

<br />
	char* pszFileName = "c:\\NewApplication.exe";<br />
	spawnl( _P_NOWAIT, pszFileName, pszFileName,NULL);<br />

It works fine, but I could not find another command to terminate that application (NewApplication.exe) in Run Time

Anyone can help me?

Thanks

Re: How can I terminate another application?

skaanji31-May-03 6:09

skaanji

31-May-03 6:09

Use TerminateProcess(HANDLE hProcess,UINT uExitCode);

Re: How can I terminate another application?

Neville Franks31-May-03 12:39

Neville Franks

31-May-03 12:39

skaanji wrote:
Use TerminateProcess(HANDLE hProcess,UINT uExitCode);

No, No, No, No, No, unless you want the user to loose all the work they've done.

To quote the MS Docs:
The TerminateProcess function is used to unconditionally cause a process to exit. Use it only in extreme circumstances.

Please be very carefull about what you you suggest to people here.

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

Re: How can I terminate another application?

ATC1-Jun-03 5:09

ATC

1-Jun-03 5:09

Hi,

I am trying & still find the way to do right!

Thanks

ATC

Re: How can I terminate another application?

ATC1-Jun-03 5:10

ATC

1-Jun-03 5:10

Hi,

I am working on it & still find the way to do right!

Thanks

ATC

Re: How can I terminate another application?

Neville Franks31-May-03 12:37

Neville Franks

31-May-03 12:37

See: http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B178893[^]

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

Re: How can I terminate another application?

ATC1-Jun-03 5:10

ATC

1-Jun-03 5:10

Hi,

I am working on it & still find the way to do right!

Thanks

ATC

Re: How can I terminate another application?

Tom Wright31-May-03 17:29

Tom Wright

31-May-03 17:29

Obtain the handle of the window. Pass a message to it to shut down.
If it's an app that requires saving before closing then it should ask
Example:

HWND hWnd;<br />
LRESULT lpResult;<br />
<br />
//Find the window<br />
hWnd = FindWindow(NULL, winName);<br />
if (hWnd == NULL)<br />
{<br />
    return 0;<br />
}<br />
//Set Window Style<br />
lpResult = DefWindowProc(hWnd, WM_SYSCOMMAND, SC_CLOSE, NULL);<br />

Hope this helps

Re: Compiled errors

ATC1-Jun-03 5:07

ATC

1-Jun-03 5:07

Hi,

I did try your suggestion, but when I compiled I had two errors:

---> hWnd = FindWindow(NULL, winName);
---> lpResult = DefWindowProc(hWnd, WM_SYSCOMMAND, SC_CLOSE, NULL);

error C2440: '=' : cannot convert from 'class CWnd *' to 'struct HWND__ *'
error C2660: 'DefWindowProcA' : function does not take 4 parameters

Do you know why?

Thanks for help

ATC

Is pointers in C++ a headache for real world programmers?

Link260031-May-03 3:00

Link2600

31-May-03 3:00

In Java, they got rid of the use of pointers, and most Java
programmers will tell you because the creators want to get
rid of the pointers headache for programmers. I wonder if it
is true? Is pointers a headache for you? And is it useful? If
you don't use pointers, what alternatives do you have?

(off topic) By the way, do you happen to know if there is a
Java forum that is similar to this site?

Thanks.

Re: Is pointers in C++ a headache for real world programmers?

ZoogieZork31-May-03 3:19

ZoogieZork

31-May-03 3:19

VW_Red_Jetta wrote:
By the way, do you happen to know if there is a
Java forum that is similar to this site?

Try the JDC Forums: http://forum.java.sun.com/[^]

- Mike

Re: Is pointers in C++ a headache for real world programmers?

C^hris L^osinger31-May-03 4:17

C^hris L^osinger

31-May-03 4:17

other people's use of pointers is evil, but pointers are wonderful.

To vote with no response is to follow the way of the coward.

Re: Is pointers in C++ a headache for real world programmers?

leppie31-May-03 6:03

leppie

31-May-03 6:03

Chris Losinger wrote:
other people's use of pointers is evil, but pointers are wonderful

I agree, I dont do c++ but do c, and once you grasp that everything is really just a number and passing-by-reference is complete bollocks, then it all makes sense to you.

Smile | :)

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Re: Is pointers in C++ a headache for real world programmers?

Michael Dunn31-May-03 5:38

Michael Dunn

31-May-03 5:38

VW_Red_Jetta wrote:
Is pointers a headache for you? And is it useful? If
you don't use pointers, what alternatives do you have?

No.
Yes.
VB Dead | X|

Java people say that pointers are evil. C++ people say that not controlling when object destructors run is evil. *shrug*

--Mike--
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Re: Is pointers in C++ a headache for real world programmers?

valikac31-May-03 7:02

valikac

31-May-03 7:02

C++ pointers are extremely powerful for both software design and implementation.

Kuphryn

Re: Is pointers in C++ a headache for real world programmers?

Daniela12331-May-03 7:20

Daniela123

31-May-03 7:20

I do not understand...
How can you get anything done without them.
and it is not a headache.
I think, the reason that JAVA is different from C (C++) in this respect, is security.
In C you can assign any number to a pointer and read and write any byte in memory, sometimes with disastrous results. Only hardware memory management can protect us from unauthorized access.
But then, I do not know JAVA.

Daniela

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