C / C++ / MFC Discussion Boards

Cedric Moonen11-Jan-07 7:43

11-Jan-07 7:43

In addition to the previous answer, I suggest that you take a look at the container classes from the STL (std::list or std::vector for example). At first sight it might be more complicated but it solves a lot of problems (and finally ease your life because you won't need to manage the memory yourself).

Cédric Moonen
Software developer

Charting control [v1.1]

Insert value from GUI CString into Registry

trumper11-Jan-07 5:46

trumper

11-Jan-07 5:46

Hi,

So I have this code to open a handle hKey which works fine.
RegCreateKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\MyProgram", 0L, NULL, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &hKey, NULL);

Then I try to set a value from a GUI CString member variable m_license_key into registry.
RegSetValueEx(hKey, "PROGRAM_KEY", 0L, REG_DWORD,(LPBYTE)&m_license_key, sizeof(DWORD));

The set function also works fine other than the fact that "rubbish" gets inserted as value for my registry key. In other words, HKEY_LOCAL_MACHINE\\SOFTWARE\\MyProgram\\PROGRAM_KEY is added, but the value is not what I keyed into m_license_key (it is just some strange text or some 0xHex numbers)

To be honest, I do not know what to specify for parameters 4, 5, 6 of RegSetValueEx. Any help would be greatly appreciated. Thanks.

Re: Insert value from GUI CString into Registry

Joan M11-Jan-07 6:17

Joan M

11-Jan-07 6:17

I use this code...

bool	CRegistry::SetKey(HKEY hKey, CString csSubkey, CString csValName, CString csVal)
{
	if(hKey != HKEY_CURRENT_USER)
		return false;

	if(csSubkey.IsEmpty() || csValName.IsEmpty() || csVal.IsEmpty())
		return false;

	HKEY hWkKey;
	LONG lRetorn = RegOpenKeyEx(hKey,csSubkey,0,KEY_ALL_ACCESS,&hWkKey);
	if(lRetorn == ERROR_SUCCESS)
	{
		int iLength = csVal.GetLength();
		lRetorn = RegSetValueEx(hWkKey,
									csValName,
									0, 
									REG_SZ, 
									(BYTE *)csVal.GetBuffer(0),
									iLength);

		RegFlushKey(hWkKey);
		RegCloseKey(hWkKey);

		if( lRetorn == ERROR_SUCCESS)
			return true;
	}
	return false;
}

Hope this helps.

Re: Insert value from GUI CString into Registry

Mark Salsbery11-Jan-07 6:18

Mark Salsbery

11-Jan-07 6:18

You can't cast a CString to a LPBYTE.

If you want the text in the CString saved then use the REG_SZ type...

RegSetValueEx(hKey, "PROGRAM_KEY", 0L, REG_SZ,(LPBYTE)(LPCTSTR)m_license_key, m_license_key.GetLength() + 1);

Re: Insert value from GUI CString into Registry

led mike11-Jan-07 6:18

led mike

11-Jan-07 6:18

trumper wrote:
I do not know what to specify for parameters 4, 5, 6 of RegSetValueEx.

They hide that information in the documentation[^] Roll eyes | :rolleyes:

led mike

Re: Insert value from GUI CString into Registry

Mark Salsbery11-Jan-07 6:26

Mark Salsbery

11-Jan-07 6:26

led mike wrote:
They hide that information

bastards

Re: Insert value from GUI CString into Registry

trumper11-Jan-07 14:46

trumper

11-Jan-07 14:46

Thanks guys for all the help.

(BYTE *)m_license_key.GetBuffer(0) worked best for me =)

Really appreciate it.

Re: Insert value from GUI CString into Registry

Rajesh R Subramanian11-Jan-07 20:47

Rajesh R Subramanian

11-Jan-07 20:47

How mean they do it to us Big Grin | :-D

Nobody can give you wiser advice than yourself. - Cicero
ப்ரம்மா

MFC Grid - GVN_ENDLABELEDIT message not firing [SOLVED]

#realJSOP11-Jan-07 4:43

#realJSOP

11-Jan-07 4:43

Using the 2.25 version in VS2005:

I have an OnNotify() function in my parent window, and I get the GVN_BEGINLABELEDIT message just fine, but I never see a GVN_ENDLABELEDIT message. What am I doing wrong?

[EDIT]

It seems the grid only fires the message if the text in the cell changes. I fixed it in my copy of the grid and posted the fix in the article comments.

[/EDIT]

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

What is the handle count for a process in windows?

Gupta Suraj11-Jan-07 2:40

Gupta Suraj

11-Jan-07 2:40

Hi All,

Is anyone aware of the handle count for a process in windows?

Please let me know if it require further clarification.

Suraj

Suraj Gupta

Re: What is the handle count for a process in windows?

Rajesh R Subramanian11-Jan-07 2:49

Rajesh R Subramanian

11-Jan-07 2:49

HandleCount property of a process refers to the number of operating system handles opened by that process. I suggest you ask such questions pertaining to .NET stuff in the .NET Framework Forum.

Nobody can give you wiser advice than yourself. - Cicero
ப்ரம்மா

Re: What is the handle count for a process in windows?

Gupta Suraj11-Jan-07 2:50

Gupta Suraj

11-Jan-07 2:50

Is there any limit to that number...

Suraj Gupta

Re: What is the handle count for a process in windows?

Rajesh R Subramanian11-Jan-07 2:57

Rajesh R Subramanian

11-Jan-07 2:57

Have a look at this link[^].

And please ask .NET questions in the .NET Framework Forum[^]

Nobody can give you wiser advice than yourself. - Cicero
ப்ரம்மா

Re: What is the handle count for a process in windows?

Maximilien11-Jan-07 3:41

Maximilien

11-Jan-07 3:41

Why is that a .net specific question ?

The original poster did not mentionned the HandleCount property at all in his post.
Confused | :confused:

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: What is the handle count for a process in windows?

Rajesh R Subramanian11-Jan-07 17:57

Rajesh R Subramanian

11-Jan-07 17:57

That person has edited his post! He had asked what HandleCount was. Hope you understand it.

Nobody can give you wiser advice than yourself. - Cicero
ப்ரம்மா

Re: What is the handle count for a process in windows?

David Leyva11-Jan-07 10:24

David Leyva

11-Jan-07 10:24

Hi
The Handle count for a process is the total of handles used: Thread, opened files, events.

I think u know that the function to get HC is GetProcessHandleCount.

U have to be carefully if your app have HC that never decreases

Regards

David Leyva

Re: What is the handle count for a process in windows?

Hamid_RT11-Jan-07 20:58

Hamid_RT

11-Jan-07 20:58

And also except handle count we have thread count Smile | :)

WhiteSky

Re: What is the handle count for a process in windows?

Gupta Suraj11-Jan-07 22:33

Gupta Suraj

11-Jan-07 22:33

Thanks alot for your replies...
Handle count for a process is limited to 10000 and it can be increased to 18000 (max limit). But I can see different process on my machine (like explorer.exe) having handle count greater than 18000.

How that process is running properly even when handle count has increase dramactically?

Suraj Gupta

Creating .ico file from HICON

neilsolent11-Jan-07 2:22

neilsolent

11-Jan-07 2:22

In a previous post I was attempting to "serialize" an HICON, i.e. save it as a blob in a file or database: the opposite operation to the ExtractIcon() operation. I have since learned how to do this (see routine below).

BUT now my problem is, this routine loses color information. When the routine is run against a true-color icon, and the buffer is saved as a .ico file, and the .ico file is reloaded with ExtractIcon(), the resulting icon has reduced to 256 colors.

I think this must be a limitation of OleCreatePictureIndirect(). How can I fix my routine?

------------------------------------------------

void SerializeIcon(const HICON icon, DWORD* size, BYTE** data)
{
LPPICTURE pPicture;
PICTDESC rPD;
rPD.cbSizeofstruct = sizeof(PICTDESC);
rPD.picType = PICTYPE_ICON;
rPD.icon.hicon = icon;
IStream* pStream = NULL;
HGLOBAL hMem = NULL;
BYTE* pMem = NULL;
long lActual;

OleCreatePictureIndirect(&rPD, IID_IPicture, FALSE, (void**) &pPicture);
CreateStreamOnHGlobal(0, TRUE, &pStream);
pPicture->SaveAsFile(pStream, TRUE, &lActual);
pPicture->Release();
GetHGlobalFromStream(pStream, &hMem);
pMem = (BYTE*) GlobalLock(hMem);
*size = GlobalSize(hMem);
*data = (BYTE*) malloc(*size);
CopyMemory(*data, pMem, *size);
GlobalUnlock(hMem);
GlobalFree(hMem);
}

------------------------------------------------

<div class="ForumSig">
cheers,
Neil</div>

Re: Creating .ico file from HICON

tudorbalan10-Dec-10 1:17

tudorbalan

10-Dec-10 1:17

Did you find the answer to this question? I have the same problem.

What's wrong.... [modified]

Astricks11-Jan-07 2:01

Astricks

11-Jan-07 2:01

The below code sorts a matrix diagonally. Does it, but at the end it's throwing an "illegal" may be a bad access error. Why ?

int main(int argc, char* argv[])

{

 

            int A[5][5];int i;int j;

            int temp; int c,flag;

   
}

input :
1-1-1
2-2-2
3-3-3

output:
1-2-3
1-2-3
1-2-3

-- modified at 6:02 Friday 12th January, 2007

Re: What's wrong....

prasad_som11-Jan-07 2:09

prasad_som

11-Jan-07 2:09

You are accessing declared array with invalid index.
int A[5][5]; should be accessed only from A[0][0] to A[4][4] where as you are accessing it through A[1][1] to A[5][5]

Astricks wrote:
for (i = 1;i<=5;i++) {

You should modify this to,

for (int i = 0 ; i <5 ; i++)

at all places you have done mistake.

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

Re: What's wrong....

Astricks12-Jan-07 0:03

Astricks

12-Jan-07 0:03

thanks !

Re: What's wrong....

CPallini11-Jan-07 2:10

CPallini

11-Jan-07 2:10

C/C++ arrays are 0-based, i.e. if you declare:

int a[5];

then you have the following items:

a[0], a[1], a[2], a[3], a[4];

on the other hand, a[5], is out-of-bounds.

so the correct iteration will be

for (i = 0;i<5;i++)
  a[i]= (whatever);

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: What's wrong....

Astricks12-Jan-07 0:03

Astricks

12-Jan-07 0:03

thanks!

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