C / C++ / MFC Discussion Boards

Re: Deriving class from CObject

SandipG 1-Jun-08 20:05

SandipG

1-Jun-08 20:05

To Use MFC Printing support i guess your class should be derived from CView.

Regards,
Sandip.

Re: Deriving class from CObject

subramanyeswari1-Jun-08 20:15

subramanyeswari

1-Jun-08 20:15

The problem is it is legacy graphic custom control developed in VC++ derived from MFC. Now i have to add print support for this. I am searching in google. but so far i am unlucky. Is there anyway to add print support.

Regards, Eswari

Re: Deriving class from CObject

SandipG 1-Jun-08 20:39

SandipG

1-Jun-08 20:39

May be you can add a wrapper/container class to your control which you can derive from CView and add printing support to it.

Regards,
Sandip.

Re: Deriving class from CObject

Hamid_RT3-Jun-08 1:04

Hamid_RT

3-Jun-08 1:04

Do you want to print your datas ?

Setup with .tlb file?

ritz12341-Jun-08 18:32

ritz1234

1-Jun-08 18:32

Hello dear friends,

I ve an application in which I use the VC6.0.

In the application i have used a C# dll's .tlb file.For creating the

setup for this application what should be done.I am asking about what

should I do to distribute the .tlb file.

Thanks in Advance to all of you.

ritz1234

Working with DWORD variable

CodingLover1-Jun-08 18:05

CodingLover

1-Jun-08 18:05

Hi all,

I have a DWORD variable like this,

DWORD value = 0;

After checking a condition, I want to set all bits to 1. If I do this,

DWORD value = 0xffffffff;

is that ok?

I appreciate your help all the time...
CodingLover Smile | :)

modified on Monday, June 2, 2008 12:29 AM

Re: Working with DWORD varuable

Jijo.Raj1-Jun-08 18:30

Jijo.Raj

1-Jun-08 18:30

CodingLover wrote:
After checking a condition, I want to set all bits to 1. If I do this,

DWORD value = 1;

Since DWORD is unsigned long, assigning -1 will do the trick.

DWORD value = -1;

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Re: Working with DWORD varuable

CodingLover1-Jun-08 18:34

CodingLover

1-Jun-08 18:34

Actually I put DWORD = 1 by my mistake.

Can you see my edited post.

I appreciate your help all the time...
CodingLover Smile | :)

Re: Working with DWORD varuable

Jijo.Raj1-Jun-08 19:53

Jijo.Raj

1-Jun-08 19:53

There is nothing wrong, but instead of hardcoding, you can use constants such as MAXDWORD which is defined in winnt.h or ULONG_MAX which is defined in limits.h. That will be more safe.

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Re: Working with DWORD varuable

CodingLover1-Jun-08 20:06

CodingLover

1-Jun-08 20:06

Thanks a lot. Now I got the point. Smile | :)

I appreciate your help all the time...
CodingLover Smile | :)

why i could only read one charactor? [modified]

steven_wong1-Jun-08 17:09

steven_wong

1-Jun-08 17:09

hello, everyone:
i am now in trouble with the code below:
char temp[256];
LONG cbData=80;
RegOpenKeyEx(...&hKey);
RegQueryValue(hKey,NULL,(LPTSTR)temp,&cbData);
strcat(temp,"\\abc");
with the last line above , i could only retrieve the first charactor in temp,and the result is just *\abc. I am confused....is there anyone could help me?Thanks in advance~

modified on Monday, June 2, 2008 12:32 AM

Re: why i could only read one charactor?

Jijo.Raj1-Jun-08 18:01

Jijo.Raj

1-Jun-08 18:01

steven_wong wrote:
strcat(tem,"\\abc");

tem or temp? Just a typo while framing the question or some other temporary variable?

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Re: why i could only read one charactor?

steven_wong1-Jun-08 18:32

steven_wong

1-Jun-08 18:32

temp,i am sorry Poke tongue | ;-P

Re: why i could only read one charactor?

Rajesh R Subramanian1-Jun-08 19:58

Rajesh R Subramanian

1-Jun-08 19:58

MSDN says: RegQueryValue is provided only for compatibility with 16-bit versions of Windows. Applications should use the RegQueryValueEx function.

Besides that, what do you mean by:

LONG cbData = 80? How do you know that this would be enough? RegQueryValueEx returns ERROR_SUCCESS if successful. Did you check the return value of the function?

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Re: why i could only read one charactor?

steven_wong1-Jun-08 20:45

steven_wong

1-Jun-08 20:45

thank u for ur replying, Rajesh Wink | ;)

i c that,however, now i need to read the default value of a registry key, which means i could only use RegQueryValue.
and i have checked if RegQueryValue returns ERROR_SUCCESS in my own codes.the codes i paste here is just for simple.anyway, thank u for ur reminding

List box arrow

rp_suman1-Jun-08 16:34

rp_suman

1-Jun-08 16:34

There is a list box in dialog resource.

While running, it is having two arrows on right side vertically.

I want to make it only one arrow towards down and when clicking it I want to show all the items in the list.

How to do it?

Thanks & Regards,
Suman

--
"Programming is an art that fights back!"

Re: List box arrow

Jijo.Raj1-Jun-08 17:56

Jijo.Raj

1-Jun-08 17:56

rp_suman wrote:
I want to make it only one arrow towards down and when clicking it I want to show all the items in the list.

I think you need a Combobox instead of listbox.

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Re: List box arrow

rp_suman1-Jun-08 18:57

rp_suman

1-Jun-08 18:57

Hi,

Thanks for the help!!

Now I have to use keyboard's down/up arrows to select different items.
But I want to see all the items when I click the combobox arrow.

Thanks,
Suman

--
"Programming is an art that fights back!"

Re: List box arrow

Jijo.Raj1-Jun-08 19:41

Jijo.Raj

1-Jun-08 19:41

I hope you just picked the combo and placed it to dialog. If you did so, by default the dropdown list size will be small to occupy only one item. So do the following

1) After placing the combo to the dialog in resource editor, click on the drop down arrow and dropdown size change rect will appear.
2) Drag the dropdown size selection so that you can see bigger list.

If you want to do it via code, send CB_SETMINVISIBLE to the combobox by specifying the minimum number of items visible in the combo.

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Re: List box arrow

rp_suman1-Jun-08 19:56

rp_suman

1-Jun-08 19:56

Hi Jijo,

Thanks for the help!!

Design time sizing of control is working well.

To do it in code, sending message only is enough or do we need to something else like creating manifest file..

Thanks,
Suman

--
"Programming is an art that fights back!"

Re: List box arrow

Jijo.Raj1-Jun-08 20:05

Jijo.Raj

1-Jun-08 20:05

Just send the message. That will be enough. I'm sure that the combo will hear your message. Wink | ;)

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

[MFC] OnCreateClient Doesn't exist

Schehaider_Aymen1-Jun-08 10:50

Schehaider_Aymen

1-Jun-08 10:50

Hi,

I added a new form and associated to the CView Class, and i wannted to add The OnCreateClient usinf the wizard but i didn't find it.

Is that a stupid question or what? WTF | :WTF:

how can i add that Function. Thx

"The Ultimate Limit Is Only Your Imagination."

Re: [MFC] OnCreateClient Doesn't exist

rp_suman1-Jun-08 16:39

rp_suman

1-Jun-08 16:39

Hi,

Do you want override it?

Refer this page: CFrameWnd::OnCreateClient[^]

Thanks,
Suman

--
"Programming is an art that fights back!"

Re: [MFC] OnCreateClient Doesn't exist

Mark Salsbery2-Jun-08 6:23

Mark Salsbery

2-Jun-08 6:23

Blood_HaZaRd wrote:
and associated to the CView Class, and i wannted to add The OnCreateClient usinf the wizard but i didn't find it.

That's because OnCreateClient() is a CFrameWnd method, not a CView method.

Mark

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

Adding third choice to OK and CANCEL buttons in dialog window

Kwanalouie1-Jun-08 5:46

Kwanalouie

1-Jun-08 5:46

Using Visual C++ 6.0 MFC in SDI application

I created a dialog window. After the user enters data, he can select OK or CANCEL and the window automatically closes. I wanted to add a button called "TEST" to this same dialog. When the user clicks on the "TEST" button, I want to automatically close this dialog window just as it happens when he clicks OK or CANCEL. But I don't know how to set things up to do that.
Thanks!

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