C / C++ / MFC Discussion Boards

david bagaturia2-Mar-07 0:14

2-Mar-07 0:14

Hi All.

I have problem, in my program I use 4 thread and thay all use:

<br />
<br />
//  in ---> "D:\\Documentations ( Russian )\\C++\\For_Windows\\msc_6\\*.exe"<br />
//  out ---> "D:\\Documentations ( Russian )\\C++\\For_Windows\\msc_6\\"<br />
//<br />
wchar_t* MyFolder(wchar_t* pSearch)<br />
{<br />
	wchar_t Folder[2048]= {L'\0'};<br />
	size_t n=0; <br />
<br />
	wcscpy(Folder,pSearch);<br />
<br />
	for(n=wcslen(Folder); n >= 0; n--)<br />
		if(Folder[n] == L'\\')<br />
		{<br />
			Folder[n+1]=L'\0';<br />
			break;<br />
		}<br />
	<br />
	return Folder;<br />
}

this function, and wen I debug it, I olvais have problem to this function.
I think thare is one of two:

1) I have not much experience
2) I do some mistake [in threads or in this function].

can help?

Re: Thread proble.

_anil_2-Mar-07 0:23

_anil_

2-Mar-07 0:23

Read about CCriticalSection on MSDN

Regards
Anil

Re: Thread proble.

User 5838522-Mar-07 0:36

User 583852

2-Mar-07 0:36

david bagaturia wrote:
wchar_t Folder[2048]= {L'\0'};

david bagaturia wrote:
return Folder;

Folder goes out of scope when the function exits so you should not return a pointer to that memory. Allocate the memory using new() or allocate the buffer in the calling function and pass it to this function

System.IO.Path.IsPathRooted() does not behave as I would expect

Re: Thread proble. [modified]

prasad_som2-Mar-07 1:34

prasad_som

2-Mar-07 1:34

As indicated by Josh, the problem is because, you are returning address of local object. Create it on heap, and return it.

david bagaturia wrote:
for(n=wcslen(Folder); n >= 0; n--)

This is in fact very bad coding practice, ~~It causes unnecessary multiple calls of a functions~~.
Modify it to,

size_t n =wcslen(Folder);
for(n; n >= 0; n--)

-- modified at 9:07 Friday 2nd March, 2007

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Thread proble.

David Crow2-Mar-07 3:02

David Crow

2-Mar-07 3:02

prasad_som wrote:
It causes unnecessary multiple calls of a functions.

Actually it doesn't. wcslen() is only called once.

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"Judge not by the eye but by the heart." - Native American Proverb

Re: Thread proble.

prasad_som2-Mar-07 3:06

prasad_som

2-Mar-07 3:06

My Bad !

It was my oversight.
I thought, its comparing each time.

Prasad
Notifier using ATL | Operator new[],delete[][^]

MDIChild not getting WM_CLOSE

_anil_2-Mar-07 0:11

_anil_

2-Mar-07 0:11

I want to give user some messages before closing the MDIchild window.
But I am not getting the WM_CLOSE message. I receive WM_DESTROY messsage.
How to get the WM_CLOSE message in MDIChild window.

Regards
Anil

Re: MDIChild not getting WM_CLOSE

prasad_som2-Mar-07 1:28

prasad_som

2-Mar-07 1:28

_anil_ wrote:
How to get the WM_CLOSE message in MDIChild window

Add handler for it.
Are you sure ON_WM_CLOSE() is there in message map ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: MDIChild not getting WM_CLOSE

_anil_2-Mar-07 2:22

_anil_

2-Mar-07 2:22

Yes ofcourse I have added.

Regards
Anil

Re: MDIChild not getting WM_CLOSE

prasad_som2-Mar-07 2:30

prasad_som

2-Mar-07 2:30

Thenm, there should not be any problem.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: MDIChild not getting WM_CLOSE

Mark Salsbery2-Mar-07 8:54

Mark Salsbery

2-Mar-07 8:54

How is the window being closed?

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Handle left-click on popup menu

Nicolas Bonamy1-Mar-07 23:51

Nicolas Bonamy

1-Mar-07 23:51

Hello,

I have been searching for this but can't find any answer. I would like my app to be able to handle left-click on popup menu (not menu items). Suppose my menu is:

Item 1
Popup > PopupItem1
PopupItem2
Item2

Everybody known how to handle left-click on Item1, Item2, PopupIem1 and PopupItem2. But how can one detect a left-click on the "Popup" item? Is this feasible with a regular CMenu instance?

Thanks!

Re: Handle left-click on popup menu

Nibu babu thomas1-Mar-07 23:59

Nibu babu thomas

1-Mar-07 23:59

Nicolas Bonamy wrote:
Everybody known how to handle left-click on Item1, Item2, PopupIem1 and PopupItem2. But how can one detect a left-click on the "Popup" item? Is this feasible with a regular CMenu instance?

Hope I understood you!

This is from the documentation...

TPM_LEFTBUTTON If this flag is set, the user can select menu items with only the left mouse button.

TPM_RIGHTBUTTON If this flag is set, the user can select menu items with both the left and right mouse buttons.

Nibu thomas
A Developer

Programming tips[^] My site[^]

Re: Handle left-click on popup menu

Nicolas Bonamy2-Mar-07 0:05

Nicolas Bonamy

2-Mar-07 0:05

No sorry this is not my point. This will not add a notification if the user clicks on the "Popup" item. This will only change the behavior when clicking on "real" menu items.

Can I provide auto scroll to the list box control?

Sameer_Thakur1-Mar-07 23:31

Sameer_Thakur

1-Mar-07 23:31

Hi.

In my application I have added a listbox on a dialog box. This list contain numbers of elements that user has to scroll so much to see all the contents.
I want to minimize the scrolling efforts of user and I want to provide auto scrolling to the list box. The elements of the list box should get scroll automatically when user movies the mouse pointer over scroll bars of the list.

How I can proceed to achieve this?

Thanks

Sameer Thakur

DLL Question

Programm3r1-Mar-07 23:26

Programm3r

1-Mar-07 23:26

What would be the difference between an registered dll and a normal dll that doesn't have to be registered, would there be any performance differences?

Many Thanks
Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: DLL Question

#realJSOP1-Mar-07 23:27

#realJSOP

1-Mar-07 23:27

Assuming the DLL's are the same as far as their core code is concerned, No.

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-----
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Re: DLL Question

Programm3r1-Mar-07 23:30

Programm3r

1-Mar-07 23:30

Yes the code would be the same ... Thanx for clearing that one up John.
Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: DLL Question

ThatsAlok2-Mar-07 0:20

ThatsAlok

2-Mar-07 0:20

Programm3r wrote:
Yes the code would be the same ... Thanx for clearing that one up John.

Normal dll should be present in Exe Current Directory or environment path.. but no such compulsion with registered dll as it path is stored in registry

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Re: DLL Question

Programm3r2-Mar-07 0:37

Programm3r

2-Mar-07 0:37

So that is the difference between the two? (in a nutshell)
Thanks for the response.
Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

IE control painting issue. - Urgent.

Suyash1-Mar-07 23:01

Suyash

1-Mar-07 23:01

Hello,

I have a Dialog, where in I show some text and draw some images using DrawText() and Draw(..) functions respectively.

Now I need to introduce an IEControl on this dialog. I wish the IE control to behave as if, its the background of my dialog, i.e. when I draw text on my main dialog, some part of the text is present on the main dialog and some part of the text spills over the IE control(this behavior is desired.) however, I wish to show my text in the foreground and the IE control to be on the background.
However windows is not providing any APIs for definind Z-Order for a child window and the text out on the dialog.

Any pointers in this regard will be highly appreciated.

Thanks
Suyash

Re: IE control painting issue. - Urgent.

Mark Salsbery2-Mar-07 9:00

Mark Salsbery

2-Mar-07 9:00

No, there's no Z-order for drawing on a window. It's up to you to make sure you draw on top
of whatever you want the text to be on top of.

I'm not sure what "IEControl" you are using so I'm not sure how you could potentially know when
it's appropriate to draw the text.

Mark

"Great job, team. Head back to base for debriefing and cocktails."
(Spottswoode "Team America")

File pointer & File descriptor

san123pune1-Mar-07 22:55

san123pune

1-Mar-07 22:55

What is difference between File pointer and File Descriptor?

Re: File pointer & File descriptor [modified]

toxcct1-Mar-07 22:58

toxcct

1-Mar-07 22:58

a file descriptor is an unique number managed by the system itself to identify the file opened.

in your code, you don't get it. you get a FILE* (file pointer) to a copy of the opened file mounted in memory

you actually never work directly on the hard disk file, but on its copy into memory

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Re: File pointer & File descriptor

san123pune1-Mar-07 23:13

san123pune

1-Mar-07 23:13

Thank you toxcct

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