strange warning... - C / C++ / MFC Discussion Boards

Rage5-Jun-02 1:01

5-Jun-02 1:01

In the class browser, right click on the YourDlg class, and choose Add Windows Message Handle. A dialog Box opens. In the left list double click on WM_CTLCOLOR until it is written in the right list, and click on Add and Edit button.

Here you are.

~RaGE();

Re: ListBox problem

chen5-Jun-02 15:07

chen

5-Jun-02 15:07

Thanks for all the replys!

If i want to set some text lines with one color and
some text lines with another color, how can i do?

best Regards,

chen

How to select several rows with vbscript ?

cadinfo4-Jun-02 20:14

cadinfo

4-Jun-02 20:14

I wrote a macro to deal with some rows of codes, and after that I want to mark those lines, can anyone tell me how to select several rows with vbscript in visual studio 6. Hmmm | :|

I'm learning vc

Thread Q? Is this allright?

MarkPQ4-Jun-02 20:11

MarkPQ

4-Jun-02 20:11

Hopefully this question isnt too silly.

I've got a thread that I want to get the exit code from. I started it using
CWinThread* pMyThread = AfxBeginThread(ThreadProc, (LPVOID)this,0,0,CREATE_SUSPENDED), after which I set the AutoDelete to false and Resumed the thread.

Once I have the ExitCode from the thread, is calling delete pMyThread ok for cleaning up the thread that I created? Or is there something else to do or a better way of doing this?

Thanks,
Mark

Re: Thread Q? Is this allright?

Rage4-Jun-02 21:20

Rage

4-Jun-02 21:20

Well, if you are sure of what you´re thread is doing at the moment when you kill it, use TerminateThread ...

~RaGE();

Re: Thread Q? Is this allright?

Alexandru Savescu4-Jun-02 22:08

Alexandru Savescu

4-Jun-02 22:08

I believe TerminateThread is never recommended to use. You can try PostQuitMessage.

Best regards,
Alexandru Savescu

Re: Thread Q? Is this allright?

Tomasz Sowinski4-Jun-02 23:45

Tomasz Sowinski

4-Jun-02 23:45

Deleting pMyThread is OK assuming that thread has finished its execution and m_bAutoDelete was set to false.

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

- It's for protection
- Protection from what? Zee Germans?

strange warning...

Bernhard4-Jun-02 20:09

Bernhard

4-Jun-02 20:09

since i pass a vector in my program i get the following message when compiling...

d:\apps\microsoft visual studio\vc98\include\xtree(396): see reference to function template instantiation 'void _Distance const_iter,const_iter,unsigned int &)' being compiled

or without stl - message - decryption:

D:\shista.cpp(1918) : see reference to class template instantiation 'std::pair<class std::_Tree<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::basic_string<char,struct std::cha
r_traits<char>,class std::allocator<char> >,struct std::set<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,struct std::less<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char
> > >,class std::allocator<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > >::_Kfn,struct std::less<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >,class std::alloca
tor<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > >::iterator,bool>' being compiled

can i savely ignore this ?? (like i do right now).. or what the hell is this about..

thanks in advance..
bernhard

"I'm from the South Bronx, and I don't care what you say: those cows look dangerous."
U.S. Secretary of State Colin Powell at George Bush's ranch in Texas

Re: strange warning...

Alexandru Savescu4-Jun-02 22:10

Alexandru Savescu

4-Jun-02 22:10

Yes, you can safely ignore this. And if you turn to level 4 you will get hundreads of messages like this. However they fixed that in VC 7.

Best regards,
Alexandru Savescu

Re: strange warning...

Bernhard4-Jun-02 22:12

Bernhard

4-Jun-02 22:12

since i am using stl i've quit using level4 altough in general it is very informative..

btw.. can you explain me what this message wants me to say ?

thanks in advance
bernhard

"I'm from the South Bronx, and I don't care what you say: those cows look dangerous."
U.S. Secretary of State Colin Powell at George Bush's ranch in Texas

Re: strange warning...

Rama Krishna Vavilala4-Jun-02 23:46

Rama Krishna Vavilala

4-Jun-02 23:46

Is it the only line of warning? Normally I see something above and something below the line of the warning that explains it.

GDI question

Nish Nishant4-Jun-02 19:33

Nish Nishant

4-Jun-02 19:33

Hello all,

I have drawn some stuff on my view Smile | :)

[Those who have been following my GDI threads would know I am trying to decode a funny image format]

Well now I have sorta decoded it and I wanna save it as a bitmap.

Any help is hugely appreciated!

Nish Smile | :)

Regards,
Nish
Native CPian.
Born and brought up on CP.
With the CP blood in him.

How to view MFC class's code?

dazinith4-Jun-02 17:46

dazinith

4-Jun-02 17:46

if i want to look at the actual code behind something like CEdit, how do i look at the actual code of that class? the way i have been doing it is deriving a class from it and then looking at the base class functions.. i know there has to be another way right?

p.s. im using .net

thanks!

-dz

Re: How to view MFC class's code?

Nish Nishant4-Jun-02 17:42

Nish Nishant

4-Jun-02 17:42

%Program Files%\Microsoft Visual Studio.NET\Vc7\atlmfc\src\mfc

Nish

Regards,
Nish
Native CPian.
Born and brought up on CP.
With the CP blood in him.

Re: How to view MFC class's code?

dazinith4-Jun-02 18:05

dazinith

4-Jun-02 18:05

hrm.. no easy browser tho eh? i see the filenames aren't exactly descriptive.. i tried doing a text search in the folder for CEdit, but of the 4 files it returned none really seemed like the right thing.. im just using CEdit as an example tho.. thanks for the info!

-dz

Re: How to view MFC class's code?

Alexandru Savescu4-Jun-02 22:04

Alexandru Savescu

4-Jun-02 22:04

The files are AfxWin.h, AfxCmn.inl, AfxWin2.inl, WinCtrl1.cpp. They containt the declaration of the class and the implementation. What exactly are you looking for.

Best regards,
Alexandru Savescu

Re: How to view MFC class's code?

Michael P Butler4-Jun-02 22:56

Michael P Butler

4-Jun-02 22:56

CEdit inherits from CWnd, you might need to look at the CWnd source code too.

Michael Smile | :)

Errata 1: p. 154, section 'Defusing'. For 'red wire' read 'blue wire'.

Re: How to view MFC class's code?

Tomasz Sowinski5-Jun-02 0:21

Tomasz Sowinski

5-Jun-02 0:21

You have the following browsing options in vs.net:

1) Object Browser - in View|Other Windows. This window also opens when you select 'Browse definition' from context menu invoked on class name in ClassView
2) You can open mfc.bsc file using File|Open, this will show the complete hierarchy in Object Browser window. mfc.bsc is in vc7\atlmfc\src\mfc
3) ClassView displays 'Base classes and Interfaces' for each class in your project. Just expand it and you'll see base class --and-- its base classes as well, so you'll be able to drill down from CYourEdit through CEdit, CWnd, CCmdTarget to CObject

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

- It's for protection
- Protection from what? Zee Germans?

Confusion regarding the "smartness" of smart pointers

Nish Nishant4-Jun-02 17:29

Nish Nishant

4-Jun-02 17:29

CoInitialize(NULL);	
ISimplePgpPtr p(__uuidof(SimplePgp)); 	
p->EncryptFile("d:\\in.txt","d:\\a90.pgp","test@test.com");
p.Release();			
CoUninitialize();

Notice how I am calling Release()

My question is this. If it's a smart pointer shouldn't it automatically call Release() in its destructor?

Nish

p.s. I tried leaving out the call to Release() and it crashed Smile | :)

Regards,
Nish
Native CPian.
Born and brought up on CP.
With the CP blood in him.

Re: Confusion regarding the "smartness" of smart pointers

Jim Crafton4-Jun-02 17:41

Jim Crafton

4-Jun-02 17:41

because you called CoUninitialize which happens before the smart pointer falls off the stack and has it's destructor called
try this:

CoInitialize(NULL);	
{
     ISimplePgpPtr p(__uuidof(SimplePgp)); 	
     p->EncryptFile("d:\\in.txt","d:\\a90.pgp","test@test.com");
     p.Release();			
}
CoUninitialize();

Re: Confusion regarding the "smartness" of smart pointers

Nish Nishant4-Jun-02 17:41

Nish Nishant

4-Jun-02 17:41

Jim Crafton wrote:

CoInitialize(NULL);
{
ISimplePgpPtr p(__uuidof(SimplePgp));
p->EncryptFile("d:\\in.txt","d:\\a90.pgp","test@test.com");
p.Release();
}
CoUninitialize();

Thanks. That worked even when I commented out the call to Release()

Nish Smile | :)

Regards,
Nish
Native CPian.
Born and brought up on CP.
With the CP blood in him.

Re: Confusion regarding the "smartness" of smart pointers

Ed Gadziemski5-Jun-02 14:45

Ed Gadziemski

5-Jun-02 14:45

Making it a statement block (enclosed in braces { }) forces the code to execute as a block and clean up after itself.

Smart Pointers - revisited

Nish Nishant4-Jun-02 17:16

Nish Nishant

4-Jun-02 17:16

First of all, Thanks to Rama, Mazy and Jason.

Here is my code now. It works by the way Smile | :)

ISimplePgpPtr p(__uuidof(SimplePgp)); 	
p->EncryptFile("d:\\in.txt","d:\\a90.pgp","test@test.com");
p.Release();	
CoUninitialize();

Now this is my problem. I am puzzled by the behavior of p.

When I hit a . after p and when I type a -> after p I get different drop downs from intellisense.

Can someone clear all this up?

I tried a . instead of -> for the EncryptFile but got a compile error!

Nish

Regards,
Nish
Native CPian.
Born and brought up on CP.
With the CP blood in him.

Re: Smart Pointers - revisited

Le centriste4-Jun-02 17:26

Le centriste

4-Jun-02 17:26

The . shows the member of _com_ptr_t class. this class has the -> operator overloaded, which shows you the member of ISimplePgp class.

Michel

It is a lovely language, but it takes a very long time to say anything in it, because we do not say anything in it, unless it is worth taking a very long time to say, and to listen to.

- TreeBeard

Re: Smart Pointers - revisited

Nish Nishant4-Jun-02 17:26

Nish Nishant

4-Jun-02 17:26

Michel Prévost wrote:
The . shows the member of _com_ptr_t class. this class has the -> operator overloaded, which shows you the member of ISimplePgp class.

Thanks Michel. Makes sense now Smile | :)

Nish

Regards,
Nish
Native CPian.
Born and brought up on CP.
With the CP blood in him.

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