C / C++ / MFC Discussion Boards

Atom14-Dec-06 3:00

14-Dec-06 3:00

Does anyone know where I can get some code written in c++(win32 or MFC), that performs transitions between 2 images( Fade, Zoom Out, Page roll etc...). I have tried various imaging libraries including - ImageStone & CXImage, but cannot find any support for transitions.

Many Thanks,

Atom

Re: Image transitions

Hamid_RT14-Dec-06 18:11

Hamid_RT

14-Dec-06 18:11

CXImage is a good code what do you need exactly?

WhiteSky

Re: Image transitions

Atom15-Dec-06 1:48

Atom

15-Dec-06 1:48

OK,
I've found a solution, thanks for your help.

Atom

Re: Image transitions

Hamid_RT15-Dec-06 2:35

Hamid_RT

15-Dec-06 2:35

I glad you find it Smile | :)

WhiteSky

Disable PopUpMenu Item?

bosfan14-Dec-06 2:24

bosfan

14-Dec-06 2:24

Hello,
how to disable item(one or more items) from a CMenu that is shown as popup menu?
Diable normal menu items i do with this:

m_cMenu.EnableMenuItem(IDC_CLEAR, MF_BYCOMAND | MF_DISABLED | MF_GRAYED);
but how to do this when i show the same menu as an popup menu?
I call my popup menu like this:
cMenu.GetSubMenu(1)->TrackPopupMenu(1, posMouse.x, posMouse.y, this);

and all menu items are active! How to disable them?

thanks in advance
break

Re: Disable PopUpMenu Item?

KarstenK14-Dec-06 2:40

KarstenK

14-Dec-06 2:40

You got:

CMenu* pMenu = cMenu.GetSubMenu(1);
//do stuff
pMenu->EnableMenuItem(...);
//show
pMenu->>TrackPopupMenu(1, posMouse.x, posMouse.y, this);

Greetings from Germany

Re: Disable PopUpMenu Item?

bosfan14-Dec-06 3:17

bosfan

14-Dec-06 3:17

Hello,
thanks, that works! Big Grin | :-D

break;

Greetings from Germany to! Big Grin | :-D

Conversion Issue [modified]

Programm3r14-Dec-06 1:03

Programm3r

14-Dec-06 1:03

Hi all,

I know that this some of the code CLI, but I'm trying to convert a System::String^ to a std::string... Confused | :confused:

I have tried the Convert::ToString(...) with no success, could someone plz help.

String^ a;
String^ b;
vector<string> getSecNameString = CIniFile::GetSectionNames("test.ini");
for(int i=0; i < (int)getSecNameString.size(); i++)
{
  a = Convert::ToString((getSecNameString[i].c_str()));
  // Conversion Issue : a = 'True'
  //cmbSection->Items->Add(cmbSection->Text);
  vector<CIniFile::Record> getSecString = CIniFile::GetSection(getSecNameString[i], "test.ini"); 
  for(int i=0; i < (int)getSecString.size(); i++)
   b = Convert::ToString(getSecString[i].Key.c_str());
   // Conversion Issue : b = 'True'
}

Many thanx in advance

-- modified at 7:22 Thursday 14th December, 2006

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

Programm3r

Re: Conversion Issue

Rage14-Dec-06 1:15

Rage

14-Dec-06 1:15

Programm3r wrote:
I now that this some of the code CLI

Nothing wrong with that, try http://www.codeproject.com/script/comments/forums.asp?forumid=3785[^]

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

Re: Conversion Issue

toxcct14-Dec-06 1:23

toxcct

14-Dec-06 1:23

Programm3r wrote:
now that this some of the code CLI

then ask the right forum. you should be flamed to asking the wrong forum knowing perfectly what you do Poke tongue | ;-P

Don't know where to start ?
Refer the Forums Guidelines and ask a friend

[VisualCalc 3.0][Flags Beginner's Guide]

Re: Conversion Issue

kristmun14-Dec-06 1:30

kristmun

14-Dec-06 1:30

This one works for me
Stings

/krissi

Strange Exception

Kiran Pinjala14-Dec-06 0:57

Kiran Pinjala

14-Dec-06 0:57

in my application's app class initinstrance i am creting a thread as

(new CMYThread)->CreateThread();

in the run() of that thread i am wrote

CSocket mySock;
mySock.Create(1234,SOCK_DGRAM);

when the execution passes the line mySock.Create(...) it's giving an exception saying access violation and in the debug it takes the point to

void* CMapPtrToPtr::GetValueAt(void* key) const
// find value (or return NULL -- NULL values not different as a result)
{
	if (m_pHashTable == NULL) // ****AND POINTING HERE***
		return NULL;

	UINT nHash = HashKey(key) % m_nHashTableSize;

	// see if it exists
	CAssoc* pAssoc;
	for (pAssoc = m_pHashTable[nHash]; pAssoc != NULL; pAssoc = pAssoc->pNext)
	{
		if (pAssoc->key == key)
			return pAssoc->value;
	}
	return NULL;
}

and showing

this

pointer as NULL in the 'watch'.

Can u guide me the way out.
Thank you.

KIRAN PINJARLA

Re: Strange Exception

Rage14-Dec-06 1:09

Rage

14-Dec-06 1:09

The construction of the socket seems to fail.

Does this help (surprisingly, I do not know if it is really the same):

CSocket mySock();

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

Re: Strange Exception

Kiran Pinjala14-Dec-06 1:14

Kiran Pinjala

14-Dec-06 1:14

It Doesn't help me.
Thank you.

KIRAN PINJARLA

Re: Strange Exception

toxcct14-Dec-06 1:28

toxcct

14-Dec-06 1:28

my replys will certainly not help, but when you do this :

(new CMYThread)->CreateThread();

do you see the memory leak ???

you allocate dynamically a CMyThread object (using new), but as you don't store the address returned (in a CMyPointer pointer), you'll never be able to delete it, thus the leak.

store the address in a pointer, or try this :

(CMYThread())->CreateThread();

this will call the default constructor of the class (just like new does), but allocated the object on the stack instead of on the heap.

Don't know where to start ?
Refer the Forums Guidelines and ask a friend

[VisualCalc 3.0][Flags Beginner's Guide]

Re: Strange Exception

Mark Salsbery14-Dec-06 5:41

Mark Salsbery

14-Dec-06 5:41

First, I'll assume CMYThread is derived from CWinThread and you know

(new CMYThread)->CreateThread();

won't be a memory leak because the object is self-deleting.

Second, CSocket needs a window when you call Create() so you'd need to use a user interface
thread. An easier method would be to create the socket on the app's UI thread and pass it
into (or make it accessible by) CMyThread.

Mark

Avoid Renaming of a file

vipin_nvk14-Dec-06 0:46

vipin_nvk

14-Dec-06 0:46

Hello

I am creating a file with a particular name (its a simple txt file). The properties of this file should be such that the user should not be able to rename the file. Is is possible to create a file such that the computer user is not able rename it ??

This is basically because, my application needs some information from this specific file, and it would fail in case the user has changed the file name (because the application would not be able to find that file in its working directory)

Thanx,
Vipin.

Re: Avoid Renaming of a file

Rage14-Dec-06 1:13

Rage

14-Dec-06 1:13

vipin_nvk wrote:
Is is possible to create a file such that the computer user is not able rename it

I do not think it is, unless this is a general administration policy, but that would be true for all files.

Anyway, I think you should rethink your design, it seems that your application must be robust enough to handle the fact that the property file does not exist. If the user is dumb enough to move or rename files that comes with your app, he deserves nothing more than an error message.

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

Re: Avoid Renaming of a file

Cedric Moonen14-Dec-06 1:18

Cedric Moonen

14-Dec-06 1:18

vipin_nvk wrote:
This is basically because, my application needs some information from this specific file, and it would fail in case the user has changed the file name (because the application would not be able to find that file in its working directory)

In general, if a user rename a file used by an application, chances are that the application will fail to start (or use this file). The user is simply not supposed to rename these files or change the contents.
The best you can do is first check if the file exist and then show an error message if not (and take the appropriate action, e.g. exit the program). Then you can also check if the contents of the file are valid.

Cédric Moonen
Software developer

Charting control [v1.1]

Re: Avoid Renaming of a file

vipin_nvk14-Dec-06 17:48

vipin_nvk

14-Dec-06 17:48

Thanx, yes, this is wat the behaviour of my application is currently, but I jst wanted to know, whether there is a way that we can avoid the user from renaming the file.

Re: Avoid Renaming of a file

David Crow14-Dec-06 2:47

David Crow

14-Dec-06 2:47

vipin_nvk wrote:
Is is possible to create a file such that the computer user is not able rename it ??

Yes, but you'll need to do so at the OS level (i.e., it's not enough to simply make the file read-only). See Access Control List (ACL) for more.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

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

What are the differences between kernel,user and gdi objects?and hadles?

sawerr14-Dec-06 0:23

sawerr

14-Dec-06 0:23

Hi What are the differences between kernel,user and gdi objects?and hadles?
I read that
1-)kernel objects are created in system adress space but user are in program adress space but gdi?And also i read that kernel objects are can be shred accross processes but user and gid can not.Are these true?I am not sure.
2-)kernel objects handles are for per-process but user and gdi are system-wide.If thhese are system wides why cant we share accross proccess.Bu also we can share kernel objects?

I think i mixed everthing and confused a lot.
CAn you please tell me concept of object and differences between object types(kernel,user,gdi)

Thanks a lot.

Re: What are the differences between kernel,user and gdi objects?and hadles?

sawerr14-Dec-06 1:43

sawerr

14-Dec-06 1:43

When a process is cretaed ; windows create a process handle table (right?) and kernel objects store here.
But where do windows store other objects handles.
For example:
I run a process and then win. cretae a process handle table then, program call these functions
CreateThread() returns handleForKernel
CreateBitmap() returns handleForGdi
CeateWindow () returns handleForUser.
Where are these handles?
All of them in process handle table?If not which one process handle table which ones are not?
in system adress space or program adress space?

Crystal report generation in VC++ & MS-Access

Karismatic14-Dec-06 0:22

Karismatic

14-Dec-06 0:22

Hi:
i m new to Crystal Reporting , and don't know how to use it in VC++ . can any one help me.

Re: Crystal report generation in VC++ & MS-Access

Hamid_RT14-Dec-06 18:04

Hamid_RT

14-Dec-06 18:04

See here[^]

WhiteSky

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.