C / C++ / MFC Discussion Boards

Saving a bitmap image in visual C++ 2003

MozhdehQeraati18-Feb-08 20:34

18-Feb-08 20:34

I want to save a bitmap image in Visual C++ 2003.I use the save method of the bitmap class of Gdiplus this way:

Gdiplus :: bitmap mybitmap;
mybitmap.save (L"C:\myFolder\",&bmpClsid);

But I get a win32Error.

Thanks in advance.

Re: Saving a bitmap image in visual C++ 2003

Hamid_RT18-Feb-08 20:43

Hamid_RT

18-Feb-08 20:43

Did you try with CImage class? it has save method.

Re: Saving a bitmap image in visual C++ 2003

MozhdehQeraati18-Feb-08 21:01

MozhdehQeraati

18-Feb-08 21:01

I want to use GDIPlus:: Image.

Re: Saving a bitmap image in visual C++ 2003

Rajkumar R18-Feb-08 21:03

Rajkumar R

18-Feb-08 21:03

MozhdehQeraati wrote:
mybitmap.save (L"C:\myFolder\",&bmpClsid);

file path error?

something like L"C:\\myFolder\\image1.bmp"

Re: Saving a bitmap image in visual C++ 2003

MozhdehQeraati18-Feb-08 21:22

MozhdehQeraati

18-Feb-08 21:22

i Test with this format but get win32error.

Re: Saving a bitmap image in visual C++ 2003

Prasanth M V18-Feb-08 21:56

Prasanth M V

18-Feb-08 21:56

Hi,

Did u start the GDI + engine?

ULONG_PTR m_gdiplusToken;
GdiplusStartupInput gdiplusStartupInput;

GdiplusStartup(&m_gdiplusToken, &gdiplusStartupInput, NULL);

Bitmap *pBitmap = Bitmap::FromFile(/*File name*/);

CLSID Clsid = {0};
GetEncoderClsid(L"image/bmp", &Clsid))

CString strFilePath = "C://1.bmp";
pBitmap->Save(strFilePath.AllocSysString(),&Clsid);

GdiplusShutdown(m_gdiplusToken);

Prasanth M V
Software Engineer.

Re: Saving a bitmap image in visual C++ 2003

Rajkumar R18-Feb-08 22:12

Rajkumar R

18-Feb-08 22:12

I would like to know the value of win32 error.

GINA

MozhdehQeraati18-Feb-08 20:28

MozhdehQeraati

18-Feb-08 20:28

I have downloaded the GINA sample of MSDN and made some changes in order to be able to logon domain with finger print. But I have some problems.
1. Sometimes I see this message while logging on: "There is a time and/or date difference between client and the server." But there is no difference. If I repeat running the virtual machine this message won't appear and rest of the procedure is followed.
2. The virtual machine is a member of a domain but I want to log on locally. What should I pass the "domain" variable to the functions? I have passed "" (empty string) but a message is shown that the user name / password is incorrect. But it isn't the case.
Thanks in advance.

typedef

George_George18-Feb-08 20:25

George_George

18-Feb-08 20:25

Hello everyone,

In the following segment, it does not compile because const is qualified on (the whole) type int& not on the near one int, right?

using namespace std;

typedef const int& rcInt;
typedef int& int_ref_t;

int main()
{
	rcInt ref = 0; // compile ok

	const int_ref_t x = 0; // error C2440: 'initializing' : cannot convert from 'int' to 'int_ref_t'

	return 0;
}

thanks in advance,
George

Re: typedef

Rajkumar R18-Feb-08 20:45

Rajkumar R

18-Feb-08 20:45

George_George wrote:
it does not compile because const is qualified on (the whole) type int& not on the near one int, right?

yes,

Re: typedef

George_George18-Feb-08 20:50

George_George

18-Feb-08 20:50

Thanks Rajkumar!

My question is answered.

regards,
George

Re: typedef

Prasanth M V18-Feb-08 21:38

Prasanth M V

18-Feb-08 21:38

No,

U are getting error not beacuse of "const", but as it is reference variable.
Does answer make sense????

Prasanth M V

Re: typedef

George_George18-Feb-08 21:43

George_George

18-Feb-08 21:43

Thanks Prasanth!

My question is answered.

regards,
George

Re: typedef

Rajkumar R18-Feb-08 22:28

Rajkumar R

18-Feb-08 22:28

so got 2 accepted answers YES aand NO Big Grin | :-D

Re: typedef

George_George19-Feb-08 14:14

George_George

19-Feb-08 14:14

Thanks Rajkumar,

Both of them are correct. Smile | :)

regards,
George

Re: typedef

Rajkumar R18-Feb-08 22:24

Rajkumar R

18-Feb-08 22:24

George_George wrote:
it does not compile because const is qualified on (the whole) type int& not on the near one int, right?

his question,
rcInt ref = 0;
const int_ref_t x = 0;
both evaluates to a reading const int &x = 0; then how compiler interprets

Prasanth M V wrote:
U are getting error not beacuse of "const", but as it is reference variable.

how about rcInt ref = 0; it is also a reference variable.

how the error because of reference variable came here, because in the expression,
const int_ref_t x, const qualifier on reference type (int_ref_t) is ignored and x become the type int &. while compiler interprets rcInt ref = 0, as reference variable of type const int.

Re: typedef

Prasanth M V18-Feb-08 22:37

Prasanth M V

18-Feb-08 22:37

Hi Raj,

I understood from his question that whether "const int_ref_t x = 0; " became error.

int_ref_t x is equivalnet to int& x. Am i right?

Then it will end with error. Does my expalnation make sese??

Thanks
Prasanth M V

Re: typedef

Rajkumar R18-Feb-08 22:50

Rajkumar R

18-Feb-08 22:50

Prasanth M V wrote:
I understood from his question that whether "const int_ref_t x = 0; " became error.

No, its not "whether", he know there is a compilation error, his question is whether this is because const is qualified on ( int & ) type, while in the previous statement const is qualified on (int) of reference variable &x.

george_george wrote:
In the following segment, it does not compile because const is qualified on (the whole) type int& not on the near one int, right?

Prasanth M V wrote:
Does my expalnation make sese??

then what ur "NO" means, does he is not correct that const is qualified on type (int &)

Re: typedef

Prasanth M V18-Feb-08 23:46

Prasanth M V

18-Feb-08 23:46

OK.

Sorry if my statement milead you.
What i meant is that the error is beacause of reference variable, not by const.

Thanks
Prasanth M V

CRT Security and Gotcha

suhast18-Feb-08 20:24

suhast

18-Feb-08 20:24

We use VC++ 6.0 for many years, and now here is VC++ 2005 and comming or arived VC++ 2008. Now the main issue is, how to write your code which will run on VC++ 6.0 and VC ++ 2005, yes I mean the new CRT security features.
see the function that you need to write:
strcpy, wcscpy, mbscpy, _tcscpy, _tcscpy_s. Now, somebody will say that just disable the warning and go ahead. But my question is...

Is There any way that you can write the code which will run equally on VC 6.0 and 2005, I mean w/o much effort, do not ask me to write all that predefined macros, like #if VCPP2005 then this and then that?

Why can not compiler decide that this code is for 2005 and this is for the lower version?

Any good answer??? I mean to Chris Maunder.

Thanks.

Re: CRT Security and Gotcha

James R. Twine10-Mar-08 4:52

James R. Twine

10-Mar-08 4:52

IMHO, the best way to do this is to create #defines that kick in when you are building is VC++6.0 that point back to the older versions of the SDK functions.

For example:

#if _MSC_VER <= 1200
#define _tcscpy_s( D, BS, S )     _tcscpy( D, S );
#endif

   Something like that will work, but you may get warnings about unused parameters.

   This is not that hard to do, because you can find the include file that #defines the TCHAR-variants of the secure versions of the string handling functions and use it to make things easier.

   Peace!

-=- James
Please rate this message - let me know if I helped or not!<hr></hr>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
See DeleteFXPFiles

E_NOINTERFACE

john563218-Feb-08 19:59

john5632

18-Feb-08 19:59

Hi Experts,

I am trying to get the files and folders name from RecycleBin. But the statement "hr = m_pRecycleBin->CreateViewObject (m_hWnd, IID_IShellDetails, (VOID**)&pDetails);" is returning E_NOINTERFACE.

I could not know what is happening?

My code is:

<br />
CoInitialize(NULL);<br />
<br />
	HMODULE m_hShell32 = LoadLibrary(_T("SHELL32.DLL"));<br />
	typedef IShellFolder	FAR*	LPSHELLFOLDER;<br />
	typedef IShellFolder2	FAR*	PSHELLDETAILS;<br />
	LPSHELLFOLDER	m_pRecycleBin;<br />
	<br />
	<br />
<br />
	BOOL			bReturn			= FALSE;<br />
	STRRET			strRet;<br />
	LPMALLOC		pMalloc			= NULL;<br />
	LPSHELLFOLDER	pDesktop		= NULL;<br />
	LPITEMIDLIST	pidlRecycleBin	= NULL;<br />
	HRESULT			hr				= S_OK;<br />
	m_pRecycleBin=NULL;<br />
	SHGetMalloc(&pMalloc); // windows memory management pointer needed later<br />
	hr = SHGetDesktopFolder(&pDesktop);<br />
	hr = SHGetSpecialFolderLocation (m_hWnd, CSIDL_BITBUCKET, &pidlRecycleBin);<br />
	if (NULL != m_pRecycleBin)<br />
	{<br />
		m_pRecycleBin->Release ();<br />
		m_pRecycleBin = NULL;<br />
	}<br />
	hr = pDesktop->BindToObject(pidlRecycleBin, NULL, IID_IShellFolder, (LPVOID *)&m_pRecycleBin);<br />
	if (SUCCEEDED (hr))<br />
	{<br />
		bReturn = TRUE;<br />
	}<br />
	if (S_OK == pDesktop->GetDisplayNameOf (pidlRecycleBin, SHGDN_NORMAL, &strRet))<br />
	{<br />
		GetName (strRet);<br />
	}<br />
<br />
	pMalloc->Free (pidlRecycleBin);<br />
	pDesktop->Release();<br />
	pMalloc->Release();<br />
	//return bReturn;<br />
<br />
	PSHELLDETAILS pDetails = NULL;<br />
	//HRESULT hr = S_OK;<br />
<br />
	SHGetMalloc(&pMalloc); // windows memory management pointer needed later<br />
	hr = m_pRecycleBin->CreateViewObject (m_hWnd, IID_IShellDetails, (VOID**)&pDetails);<br />
	if (SUCCEEDED (hr))<br />
	{<br />
		TCHAR szTemp[MAX_PATH];<br />
		SHELLDETAILS sd;<br />
		int iSubItem = 0;<br />
<br />
		while (SUCCEEDED (hr))<br />
		{<br />
			hr = pDetails->GetDetailsOf (NULL , iSubItem, &sd);<br />
			if (SUCCEEDED (hr))<br />
			{<br />
				switch (sd.str.uType)<br />
				{<br />
				case STRRET_CSTR:<br />
					_tcscpy (szTemp, sd.str.cStr);<br />
					break;<br />
				case STRRET_OFFSET:<br />
					break;<br />
				case STRRET_WSTR:<br />
					WideCharToMultiByte (CP_ACP, 0, sd.str.pOleStr, -1, szTemp, sizeof (szTemp), NULL, NULL);<br />
					pMalloc->Free (sd.str.pOleStr);<br />
					break;<br />
				}<br />
				//m_List.InsertColumn (iSubItem , szTemp, LVCFMT_LEFT, 100);<br />
				iSubItem ++;<br />
			}<br />
		}<br />
	}<br />
	if (NULL != pDetails)<br />
	{<br />
		pMalloc->Free (pDetails);<br />
	}<br />
	pMalloc->Release();<br />
<br />

Re: E_NOINTERFACE

Rajkumar R18-Feb-08 20:16

Rajkumar R

18-Feb-08 20:16

pther wrote:

typedef IShellFolder2 FAR* PSHELLDETAILS;

...

PSHELLDETAILS pDetails = NULL;
hr = m_pRecycleBin->CreateViewObject (m_hWnd, IID_IShellDetails, (VOID**)&pDetails);

type is IShellFolder2 and query for IID_IShellDetails, although this is not the error, returning E_NOINTERFACE means the interface is not supported by the object,

looking into IShellDetails, gives the information, IShellDetails is superseeded by
IShellFolder2 in newer version of windows,

change to

hr = m_pRecycleBin->CreateViewObject (m_hWnd, IID_IShellFolder2, (VOID**)&pDetails);

that make sense to the type u defined

Re: E_NOINTERFACE

john563218-Feb-08 20:34

john5632

18-Feb-08 20:34

I tried with "hr = m_pRecycleBin->CreateViewObject (m_hWnd, IID_IShellFolder2, (VOID**)&pDetails);"

But problem is remain same.
It is also returning E_NOINTERFACE.

Question about Mutex and Atoms. [modified]

User 238229218-Feb-08 19:55

User 2382292

18-Feb-08 19:55

What is the "scope" of a mutex? (you know, when preventing multiple instances)

Is it "active" for multiple users?? i mean, lets say an app creates a Mutex to mark it's residency....if a second user executes an app...and it attempts to "OpenMutex()" is it successfull??

Also What's the Scope of Atoms??? (across multiple users)

offtopic : how long does it take for an article to be verfied by CP staff?

-st0le [st0le'n'stuff softwarez!]
http://st0lenc0des.googlepages.com/

modified on Tuesday, February 19, 2008 2:13 AM

modified 20-Oct-19 21:02pm.

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