C / C++ / MFC Discussion Boards

Re: Setting text in CStatic field with a pathname

smbika11-Oct-04 10:40

11-Oct-04 10:40

Hmmm,
It seemed big enough but i did not check it with that big a string - i will experiment further. Also, I was wondering about the backslashes in the path - could an escape sequence be happening? I will fiddle with that notion too...

Thanks for the reply!
Sean

Firefly, Stargate, Farscape: in that order

Re: Setting text in CStatic field with a pathname

David Crow11-Oct-04 10:49

David Crow

11-Oct-04 10:49

smbika wrote:
Also, I was wondering about the backslashes in the path - could an escape sequence be happening?

No, that only applies to string literals in the code.

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

Re: Setting text in CStatic field with a pathname

smbika11-Oct-04 16:10

smbika

11-Oct-04 16:10

Thanks again for the help - it was indeed the size of the field, but i did find i had to change the slashes to double slashes or they did not show up - sigh...

I have another problem which i will begn another thread on...

lemme know... Big Grin | :-D

Firefly, Stargate, Farscape: in that order

Re: Setting text in CStatic field with a pathname

smbika11-Oct-04 16:37

smbika

11-Oct-04 16:37

darn it - looks like i was wrong about the double slashes too - sokay - as long as it works and i have learned Big Grin | :-D

thanks again and my apologies for the mistake...
Sean

Firefly, Stargate, Farscape: in that order

GDI Objects

sailu7811-Oct-04 6:06

sailu78

11-Oct-04 6:06

Hi,

I am using a frame, which is an inherited class from CFrameWnd, in an
MFC application.

When I open & close the frame, there are few extra GDI objects & User
objects that gets created. That is, when a close is performed, all
those user objects & GDI objects created do not get lost. I am
monitoring this using the Windows Task Manager itself.

Presuming a memory leak, I tried stepping thru the code to notice any
memory leak but that is not reported either...

Can somebody please help me with some pointers regarding this...?

Sailu

Re: GDI Objects

Mike Beckerleg11-Oct-04 6:50

Mike Beckerleg

11-Oct-04 6:50

Does it leak the GDI objects everytime you open and close the frame or just the first time. If it is just the first time then it is nothing to worry about and is just MFC keeping handle to things that it will reuse.

If the GDI count keeps going up with repeated open/closes then you do have a probelm.

Mike

Re: GDI Objects

sailu7811-Oct-04 21:43

sailu78

11-Oct-04 21:43

Yes. It indeed keeps going up with repeated open/closes.
Any ideas as to how do I exactly zero-in to the cause...???
-Sailu

Mike Beckerleg wrote:
Does it leak the GDI objects everytime you open and close the frame or just the first time. If it is just the first time then it is nothing to worry about and is just MFC keeping handle to things that it will reuse.

If the GDI count keeps going up with repeated open/closes then you do have a probelm.

Mike

Re: GDI Objects

Mike Beckerleg11-Oct-04 21:57

Mike Beckerleg

11-Oct-04 21:57

Try posting some code for us to have a look at.

can not add chinese word in tree control

akira3211-Oct-04 5:54

akira32

11-Oct-04 5:54

p->name is chinese word as
char name[32];

int idname;
m_role_file.FindFirst();
while (m_role_file.FindNext(idname))
{
CRole *p = m_role_file.Find(idname);
HTREEITEM treeitem;

treeitem=tree_ctrl->InsertItem(p->name,p->rolenum+2+6,p->rolenum+2+6,root2);
tree_ctrl->SetItemData(treeitem,ROLE_ITEM+p->rolenum+1);
}

Re: can not add chinese word in tree control

jan larsen11-Oct-04 6:53

jan larsen

11-Oct-04 6:53

Hmm...
I can't help you with the problem, because I don't think you've provided enough data. What was the word you tried to add for instance?
But asides from that, considering you are working with chinese words, wouldn't Unicode be better suited for your needs?

"After all it's just text at the end of the day. - Colin Davies

"For example, when a VB programmer comes to my house, they may say 'does your pool need cleaning, sir ?' " - Christian Graus

Extended ToolTipText with CToolTipCtrl in a modal dialogbox

duck_season11-Oct-04 5:37

duck_season

11-Oct-04 5:37

Hi,

I have read a lot of articles and "Tips" but nothing couldn't help me. I use the Stringtable for my ToolTipTexts and have a modal DialogBox.
I've the following problem: I nedd ToolTips with more than 80 characters.

---------------------------------------------------
Inside the PreTranslateMessage function I call the RelayEvent function of the CToolTipCtrl-Class and inside the OnInitDiaog i registered and attached a Tool to the created CToolTipCtrl-Object. And I also used the SetMaxTipWidth(). And everything works fine but only with 80(!!) characters.
----------------------------------------------------

Can anybody help me to overcome this problem?

Thank you!

The procedure "CreateWaitableTimer" fails to get compiled

sampal11-Oct-04 5:32

sampal

11-Oct-04 5:32

I am using the procedure "CreateWaitableTimer" in my program. When I try to compile it in VC++ ver 6.0 under windows 2000 ver5, service pack 2, it gives the error "undeclared identifier" inspite of the following:
->The library "kernel32.lib" has been linked in Project Settings.
->The header "winbase.h" has been included.
->The following Macros are defined before including "windows.h".
#if !defined _WIN32_WINDOWS
#define _WIN32_WINDOWS 0x0500
#endif

#if !defined _WIN32_WINNT
#define _WIN32_WINNT 0x0500
#endif

It will be great if anybody can help me to sort out this problem.

Thanks

Re: The procedure "CreateWaitableTimer" fails to get compiled

David Crow11-Oct-04 6:00

David Crow

11-Oct-04 6:00

sampal wrote:
#if !defined _WIN32_WINDOWS
#define _WIN32_WINDOWS 0x0500
#endif

#if !defined _WIN32_WINNT
#define _WIN32_WINNT 0x0500
#endif

Both of those preprocessor directives already have values so your code is not going to work as expected (i.e., they will only get assigned a value if they do not already have one). Remove the #if directive. Are those statements included before any other #include, not just windows.h?

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

Re: The procedure "CreateWaitableTimer" fails to get compiled

sampal11-Oct-04 6:42

sampal

11-Oct-04 6:42

The error continues to appear even after removal of #if. These statements are not included before any #include.

Re: The procedure "CreateWaitableTimer" fails to get compiled

David Crow11-Oct-04 6:48

David Crow

11-Oct-04 6:48

sampal wrote:
These statements are not included before any #include.

They should be. Otherwise, they have no effect.

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

Re: The procedure "CreateWaitableTimer" fails to get compiled

Mike Dimmick11-Oct-04 10:38

Mike Dimmick

11-Oct-04 10:38

Visual Studio 6 predates Windows 2000. You need to update your SDK headers, which you can from Microsoft Platform SDK Update[^]. If you already have up-to-date headers, you need to ensure that they appear before the ones in the Microsoft Visual Studio directory in the Include Directories section of Tools/Options.

Security/fix note: by the way, you should be running Service Pack 4.

Stability. What an interesting concept. -- Chris Maunder

.NET error message

billy7511-Oct-04 5:20

billy75

11-Oct-04 5:20

Hi everybody, I'm trying to compile a a C++ application with MS Visual Studio .NET 2003 Architect.

First I compiled a library (.lib), then I used this lib to develop an application.

During the linking operation I obtain this error message:

libcpmtd.lib(xlock.obj) : error LNK2005: "public: __thiscall std::_Lockit::_Lockit(int)" (??0_Lockit@std@@QAE@H@Z) already defined in geardebug.lib(text.obj)

(where text.obj is part of the lib I developed)

Can anybody help me to understand why this happens?

Thank you very much

return; in constructor???

patnsnaudy11-Oct-04 4:32

patnsnaudy

11-Oct-04 4:32

Has anyone ever used return in a constructor? Is there anything special about this? I would assume that it skips the execution of the code below and returns a pointer to the object. Is this correct?

Thanks,
j

Re: return; in constructor???

David Crow11-Oct-04 4:46

David Crow

11-Oct-04 4:46

While it would be syntactically correct, it doesn't make much sense.

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

Re: return; in constructor???

patnsnaudy11-Oct-04 5:02

patnsnaudy

11-Oct-04 5:02

Thanks for the reply, but I am still not sure. I am reviewing some code and this person uses return in a lot of constructors. But, I am with you.

Re: return; in constructor???

Nemanja Trifunovic11-Oct-04 4:51

Nemanja Trifunovic

11-Oct-04 4:51

patnsnaudy wrote:
I would assume that it skips the execution of the code below and returns a pointer to the object.

What do you mean by that? Constructors return nothing.

My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it.

Re: return; in constructor???

patnsnaudy11-Oct-04 5:06

patnsnaudy

11-Oct-04 5:06

ctor::ctor()<br />
{<br />
 ...<br />
 do some stuff<br />
 ...<br />
 if(true)<br />
 {<br />
  return;<br />
 }<br />
 ...<br />
 do some more stuff<br />
 ...<br />
}

I assume that "do some more stuff" would not get executed.

Re: return; in constructor???

Antony M Kancidrowski11-Oct-04 5:22

Antony M Kancidrowski

11-Oct-04 5:22

patnsnaudy wrote:
I assume that "do some more stuff" would not get executed.

Correct! Since if (true) is always true. it will return without executing "do some more stuff"

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Re: return; in constructor???

Nemanja Trifunovic11-Oct-04 6:17

Nemanja Trifunovic

11-Oct-04 6:17

That's correct. But you also wrote and returns a pointer to the object, which is not true.

My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it.

Re: return; in constructor???

patnsnaudy11-Oct-04 10:33

patnsnaudy

11-Oct-04 10:33

I guess that I meant when you new the object that a pointer to the object would be passed back. The one thing that I thought return in a ctor may do is pass back null and not create the object

so:
ctor a = new ctor(); // thought that it was possible that a would be null if ctor called return, but now I know that is not the case. I could have tested it, but didn't want to spend the time. Blush | :O

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