C / C++ / MFC

Re: Will the destructor called in case of excetion occures, in this case

24-Feb-09 0:57

If you're creating the object using the new operator, the destructor will be called only when you do a delete.

«_Superman_»
I love work. It gives me something to do between weekends.

ptr_Electron24-Feb-09 1:03

ptr_Electron

24-Feb-09 1:03

Well true, but in this case I am talking about the destrutor of ~Cls::Cls, when exception occure in Cls::Function().

What would be best way to delete DataMember; incase exception occur

Re: Will the destructor called in case of excetion occures, in this case

«_Superman_»24-Feb-09 1:06

Re: Will the destructor called in case of excetion occures, in this case

24-Feb-09 1:06

~Cls::Cls will not be called unless you are calling Cls::Function from Cls::Cls.

You must delete DataMember in the catch block.

«_Superman_»
I love work. It gives me something to do between weekends.

ptr_Electron24-Feb-09 1:08

ptr_Electron

24-Feb-09 1:08

Would Finally will be more approriate ?
but DataMember is not in try block

Re: Will the destructor called in case of excetion occures, in this case

«_Superman_»24-Feb-09 1:12

Re: Will the destructor called in case of excetion occures, in this case

24-Feb-09 1:12

It is recommended you use try/catch rather than __try/__finally.
Since DataMember is declared outside the try block, it is accessible in the catch block also.
If it were declared inside the try block, then you wouldn't be able to delete it in the catch block.

«_Superman_»
I love work. It gives me something to do between weekends.

ptr_Electron24-Feb-09 1:30

ptr_Electron

24-Feb-09 1:30

Ok Thank you

how to display image in static control of Dialog

hemlat24-Feb-09 0:02

hemlat

24-Feb-09 0:02

Hi,
I have created Static control programmatically.I need to display image in
static control of Dialog.I have written following code

HINSTANCE hInstTemp = AfxGetApp()->m_hInstance;
	HBITMAP hbmp = NULL;
	if(hInstTemp != NULL)
		hbmp = (HBITMAP)LoadImage(hInstTemp,_T("C:\\vicky.bmp"), IMAGE_BITMAP, 50, 50,LR_LOADFROMFILE);
	if(hbmp != NULL)
		myStatic->SetBitmap(hbmp);

shall I need to call DrawItem or override DrawItem??

Re: how to display image in static control of Dialog

Nishad S24-Feb-09 0:05

Nishad S

24-Feb-09 0:05

Have you set the SS_BITMAP for that static control?

- ns ami -

Re: how to display image in static control of Dialog

hemlat24-Feb-09 0:40

hemlat

24-Feb-09 0:40

yes I have set SS_BITMAP|SS_CENTER.
If I did not set SS_CENTER Image is coming properly.
Thanks for your reply.

Re: how to display image in static control of Dialog

Nishad S24-Feb-09 0:56

Nishad S

24-Feb-09 0:56

hemlat wrote:
yes I have set SS_BITMAP|SS_CENTER.

I doubt you mistook SS_CENTER instead of SS_CENTERIMAGE. Please check.

- ns ami -

Re: how to display image in static control of Dialog

Hamid_RT24-Feb-09 0:17

Hamid_RT

24-Feb-09 0:17

No you can insert SS_BITMAP with ModifyStyle to your control and for bmp files you can use of this function but for jpg files you need to use of CImage class.

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Re: how to display image in static control of Dialog

hemlat24-Feb-09 0:42

hemlat

24-Feb-09 0:42

Thanks for your reply.JPG files also coming Properly.

Problem with GDI+ Bitmap::Save() function.

Sameerkumar Namdeo23-Feb-09 23:55

Sameerkumar Namdeo

23-Feb-09 23:55

Assume prfimg Bitmap is proper.

EncoderParameters pEncoderParameters;
pEncoderParameters.Count = 1;
pEncoderParameters.Parameter[0].Guid = EncoderCompression;
pEncoderParameters.Parameter[0].Type = EncoderParameterValueTypeLong;
pEncoderParameters.Parameter[0].NumberOfValues = 1;

// Save the image as a tiff with RLE compression 
ULONG compression = EncoderValueCompressionRle;
pEncoderParameters.Parameter[0].Value = &compression;
	
GetEncoderClsid(L"image/tiff", &encoderClsid);
st = prfimg->Save(L"i:\\m\\img.tif", &encoderClsid, &pEncoderParameters);

getting value of st as InvalidParameter and the image is not saved properly on disk(saved image size on disk is 1KB)
Please tell if something more needs to be done to save tif image with Rle compression.
Other compression options gives the same InvalidParameter result.

Thanks and Regards.

How read registry key value on Xp64bit OS

Sethuraman.K23-Feb-09 23:45

Sethuraman.K

23-Feb-09 23:45

I have added the key in HKLM on Xp64bit OS.

HKEY_LOCAL_MACHINESOFTWARE\\TEST\\App\\MyKey === "CodeProject"

Now, I have tried with below mentioned way,

bool Result = RegOpenKeyEx(HKEY_LOCAL_MACHINE, TEXT("SOFTWARE\\TEST\\App"), 0, KEY_READ, &hKey) == ERROR_SUCCESS;

if (Result)
{
Result = RegQueryValueEx(hKey, TEXT("MyKey"), NULL, &dwType, (LPBYTE)&szTemp, &dwSize) == ERROR_SUCCESS;

switch(dwType)
{
case REG_BINARY:
AfxMessageBox ("\ntype: REG_BINARY");
break;
case REG_NONE:
AfxMessageBox ("\ntype: REG_NONE");
break;
}
}

Messagebox displays"type: REG_NONE". That means, "No defined value type".
So, how to get my key (MyKey) value "CodeProject"?

Sethuraman.K

«_Superman_»24-Feb-09 1:02

24-Feb-09 1:02

Sethuraman.K wrote:
if (Result)

This must be if (ERROR_SUCCESS == Result)
and Result must be declared as a LONG and not bool.

«_Superman_»
I love work. It gives me something to do between weekends.

Sethuraman.K24-Feb-09 1:18

Sethuraman.K

24-Feb-09 1:18

That works fine only. I am talking about "dwType"

Sethuraman.K

«_Superman_»24-Feb-09 1:20

24-Feb-09 1:20

The value of ERROR_SUCCESS is 0.

So, in you code if it is entering if(Result), it means you are not getting ERROR_SUCCESS, which means an error in the open itself.

«_Superman_»
I love work. It gives me something to do between weekends.

Sethuraman.K24-Feb-09 2:04

Sethuraman.K

24-Feb-09 2:04

I got the solution. If our application is 32bit then registry entry (only for HKEY_LOCAL_MACHINE) in 64 bit OS sould be in

HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node

in my case entry should be in

HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Test\\App

Sethuraman.K

Timer Problem

NewVC++23-Feb-09 23:38

NewVC++

23-Feb-09 23:38

Hi All

I am useing timer in main dialog class.Calling Timer on On OnInitDialog function.But my dilaog become not responding.Plz help me.

Code-o-mat23-Feb-09 23:45

Code-o-mat

23-Feb-09 23:45

It is most likely because you did something wrong.
...
but seriously, give some code, more details, otherwise noone will be able to help you.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: Timer Problem [modified]

CPallini23-Feb-09 23:51

CPallini

23-Feb-09 23:51

How are you 'Calling Timer' (you know, no code => no help... Roll eyes | :rolleyes:

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.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

NewVC++24-Feb-09 0:12

NewVC++

24-Feb-09 0:12

void CTimer::OnTimer(UINT_PTR nIDEvent)
{
	// TODO: Add your message handler code here and/or call default
OnBnClickeTimer();
	CDialog::OnTimer(nIDEvent);
}

void CTimer::OnStartTimer()
{
	SetTimer(2,10000, 0);
}

void CTimer::OnStopTimer()
{
	  KillTimer (0);
}

BOOL CTimer::OnInitDialog()
{
OnBnClickeTimer();

}

void CTimer::OnBnClickedTimer()
{
	
	
	
		
		check:
		for(;aq<10)
		{
		
			
		finalString=a1[aq];
				
		char * szMyString = (char *)(LPCTSTR)finalString;	
		
		
		CString string = _T(szMyString);
		CString DirPath;
		

		CString string1=string;
		string1 +='\0';
		
		
		int nLen = string1.GetLength();

		LPCSTR lpszBuf = string1.GetBuffer(nLen);

		string1.ReleaseBuffer();
	
	
		LPCSTR pF=lpszBuf;
		
		LPCSTR pT="c:\\Backup";
		
		
		if (!fo.Copy(pF,pT));
		aq++;
		}
		OnStopTimer();
}

CString a1[aq] is external vaiable.
Plz help me

modified on Tuesday, February 24, 2009 6:43 AM

CPallini24-Feb-09 0:26

CPallini

24-Feb-09 0:26

Please check the posted code (for instance use < to escape the symbol < when required).
Why are you calling directly the timer function inside OnInitDialog (instead of starting the timer? You may actually do it, but usually you haven't...)?
Since you're calling directly (form OnInitDialog) your timer function (OnBnClickedTimer) it doesn't make sense the OnStopTimer call in the latter.

Anyway your application 'freezes' possibly because of a bug in your loop. You should debug it in order to have a clue about (ispecting your code is also difficult because of the, already mentioned, bad formatting).
Smile | :)