C / C++ / MFC Discussion Boards

yingkou19-Aug-04 22:46

19-Aug-04 22:46

I want to use the loaded dll in the new thread,my codes as below:
BOOL CTestDLLDlg::OnInitDialog()
{
hins=LoadLibrary("ShowDialog.dll");//Success
}
void CTestDLLDlg::OnButton1()
{
AfxBeginThread(ThreadFun,NULL);
}
UINT ThreadFun(LPVOID lp)
{
typedef void __stdcall TestChar(char,char* ,int);
TestChar* test=NULL;
test=(TestChar*)GetProcAddress(((CTestDLLDlg*)AfxGetMainWnd())->hins,"TestChar");
if(NULL != test)//Failure
{
char buf[6];
test('c',buf,sizeof(buf)/sizeof(char));
AfxGetMainWnd()->SetWindowText(buf);
return 0;
}
DWORD d=GetLastError();//can not find the given module

return -1;
}

I know if I load the dll in the new thread,it will work well.but I want to know if I used dll in this way,what should I do?

How to send and receive ARP packets

chito19-Aug-04 22:27

chito

19-Aug-04 22:27

Hi All,
How to send and receive ARP packets using windows raw sockets. I want to send ARP packets without using MSDN functions.
Thanks and regards,
Chito

Re: How to send and receive ARP packets

David Crow20-Aug-04 3:04

David Crow

20-Aug-04 3:04

chito wrote:
...without using MSDN functions.

Huh? The MSDN is not an API, but it is documentation/examples of several API. By chance did you mean that you wanted to use raw sockets without MFC?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: How to send and receive ARP packets

chito20-Aug-04 14:06

chito

20-Aug-04 14:06

Yes, I want to use raw sockets with out using MFC.
Thanks,
Chito

Re: How to send and receive ARP packets

David Crow23-Aug-04 3:18

David Crow

23-Aug-04 3:18

Ok, so how about:

connect()
send()
recv()
accept()
etc

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

ATL wizard upgrade to .NET

philbel19-Aug-04 22:06

philbel

19-Aug-04 22:06

We constructed ATL wizards for VC++ 6.0.
We now have to upgrade them to .NET .

From our first trials we identified that some directories have changed, some keywords were updated, but we found very little information in MSDN documentation about general aspects of the process.
For example, there are numbers to give in some files and we found no indications on what are authorized numbers, the risks of conflicts and so on.

Do you know of documents dealing with this upgrade issues ?

How can restart windows when user log off

Marks Zhu19-Aug-04 21:20

Marks Zhu

19-Aug-04 21:20

I detect the system log off message according to following codes
LRESULT CMainFrame::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
if (message == WM_QUERYENDSESSION)
{
if (lParam & ENDSESSION_LOGOFF)
{
//I want to restart windows,but failed by call ExitWindowsEx(EWX_LOGOFF|EWX_FORCE,0);
//I have got the shutdown privilege for this process
}
}
return CFrameWnd::WindowProc(message, wParam, lParam);
}

how can ?

Re: How can restart windows when user log off

David Crow20-Aug-04 3:06

David Crow

20-Aug-04 3:06

Marks_Zhua wrote:
...but failed...

This means nothing without a more detailed explanation. Are you getting compiler errors? Linker errors? Fired assertions? Thrown Exceptions? Unexpected results? What exactly is happening?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: How can restart windows when user log off

geo_m20-Aug-04 3:48

geo_m

20-Aug-04 3:48

For ExitWindowsEx you need to have the SeShutdownPriviledge enabled in your process token.

have a nice weekend!

How to remove CLOSE Button from right top corner?

kriaz19-Aug-04 21:03

kriaz

19-Aug-04 21:03

I want to remove Close button "X" from the right corner of Dialog, but still want to keep the system menu at the left corner. Unchecking the system menu option from dialog properties also removes the menu at left.

Plz Help. Confused | :confused:

kriaz.

Re: How to remove CLOSE Button from right top corner?

David Crow20-Aug-04 3:11

David Crow

20-Aug-04 3:11

I know of no way to remove the "X" while keeping the system menu. You can always just ignore the clicking of the "X".

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

orientation of printing

jvriend19-Aug-04 20:59

jvriend

19-Aug-04 20:59

Is there anybody who can tell me how i can set the paper-orientation of the
printer. I have searched some different books or sites about the printing-subject but i haven't found anything about setting of the orientation.

J Vriend
e-mail: JVriend@ooms.nl

Re: orientation of printing

BadJerry20-Aug-04 3:54

BadJerry

20-Aug-04 3:54

There you go... I have found it somewhere in CP but cannot remember where.. so apologies to the person who deserves credits!

<br />
void CYourApp::SetPrintOrientation(bool isLandscape)<br />
{<br />
	if ( isLandscape )<br />
	{<br />
		// landscape mode<br />
		PRINTDLG pd;<br />
		pd.lStructSize = (DWORD)sizeof(PRINTDLG) ;<br />
		BOOL bRet = GetPrinterDeviceDefaults(&pd) ;<br />
		if (bRet)<br />
		{<br />
			// protect memory handle with ::GlobalLock and ::GlobalUnlock<br />
			DEVMODE *pDevMode = (DEVMODE*)::GlobalLock(m_hDevMode) ;<br />
			// set orientation to landscape<br />
			pDevMode->dmOrientation = DMORIENT_LANDSCAPE ;<br />
			::GlobalUnlock(m_hDevMode) ;<br />
		}<br />
	}<br />
	else<br />
	{<br />
		// portrait mode<br />
		PRINTDLG pd;<br />
		pd.lStructSize = (DWORD)sizeof(PRINTDLG) ;<br />
		BOOL bRet = GetPrinterDeviceDefaults(&pd) ;<br />
		if (bRet)<br />
		{<br />
			// protect memory handle with ::GlobalLock and ::GlobalUnlock<br />
			DEVMODE *pDevMode = (DEVMODE*)::GlobalLock(m_hDevMode) ;<br />
			// set orientation to portrait<br />
			pDevMode->dmOrientation = DMORIENT_PORTRAIT ;<br />
			::GlobalUnlock(m_hDevMode) ;<br />
		}<br />
	}<br />
}<br />

And does someone know how tabs can be displayed properly in CP?

Re: orientation of printing

Andrew Peace22-Aug-04 5:49

Andrew Peace

22-Aug-04 5:49

> And does someone know how tabs can be displayed properly in CP?

Try using <pre> rather than <code> to surround your code snippets Smile | :)

.

--
Andrew.

How to build a SAFEARRAY?

anderslundsgard19-Aug-04 20:59

anderslundsgard

19-Aug-04 20:59

I’m about to make a SAFEARRAY and pas it into a this function:

<br />
void IAcadSelectionSet::AddItems(const VARIANT& pSelSet)<br />
{<br />
	static BYTE parms[] =<br />
		VTS_VARIANT;<br />
	InvokeHelper(0x7, DISPATCH_METHOD, VT_EMPTY, NULL, parms,<br />
		 &pSelSet);<br />
}<br />

At first I don’t really know why I know the pSelSet is a SAFEARRAY.

I know I have to do something like:

<br />
VARIANT var;<br />
VariantInit( &var );<br />
var.vt = VT_ARRAY;<br />

But when I do then do this call:

<br />
myIAcadSelectionSet.AddItems( var );<br />

it craches!!

Of course the array is empty but would the call crash cause of that?
I’m soon clear with the meaning of COM-calls but now I’m stucked.

_____________________________

...and justice for all

APe

Re: How to build a SAFEARRAY?

Antony M Kancidrowski20-Aug-04 0:01

Antony M Kancidrowski

20-Aug-04 0:01

This will generate a safe array of BSTRs. Hope the example helps.

// Generate the safe array for the data
VARIANT		var;
int		nSize = <enter size here>;
VariantInit(&var);

var.vt = VT_ARRAY | VT_BSTR;

SAFEARRAY*		pSA;
SAFEARRAYBOUND	bounds = {nSize, 0};	// nSize items starting with index 0

pSA = SafeArrayCreate(VT_BSTR, 1, &bounds);

BSTR*	bstrArray;

// Access the data and add the new items
SafeArrayAccessData(pSA, reinterpret_cast<void**>(&bstrArray));

for (int i = 0; i < nSize; i++)
{
  // Set the element	
  bstrArray[i] = <enter data here>;
}

SafeArrayUnaccessData(pSA);

var.parray = pSA;

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Re: How to build a SAFEARRAY?

anderslundsgard20-Aug-04 0:10

anderslundsgard

20-Aug-04 0:10

Perfect!! And Really thanks!

Don't reply to this if you don't have time...

You made an array of BSTR.
Howto if I'd like to make an array of VT_VARIANT's containing BSTR's?

I'm starting to become a VARIANT-friend soon. Smile | :)

_____________________________

...and justice for all

APe

Re: How to build a SAFEARRAY?

Antony M Kancidrowski20-Aug-04 0:27

Antony M Kancidrowski

20-Aug-04 0:27

Why not have a play with the code and see what you can do? Big Grin | :-D

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Re: How to build a SAFEARRAY?

anderslundsgard20-Aug-04 0:31

anderslundsgard

20-Aug-04 0:31

Yeah. Right now I'm coding to death Roll eyes | :rolleyes:

. No lunch here. Smile | :)

I hope I'll soon have something good...

_____________________________

...and justice for all

APe

How to prepare code for using COM

dudic19-Aug-04 20:42

dudic

19-Aug-04 20:42

I have a problem with using COM in my application. For example, I create a simple dialog-based application in VC6 and I want to use COM here. What header files and where do I have to add, may be something I have to change in project settings.

Re: How to prepare code for using COM

Rory Solley19-Aug-04 21:39

Rory Solley

19-Aug-04 21:39

Just make sure you call CoInitialize[Ex] to create a COM apartment and CoUnInitialize to destroy it (before exiting your app).

It can do no harm to include comdef.h if you want to use some of the COM helper classes such as _variant_t.

Also, you might want to set the _WIN32_DCOM preprocessor directive which will include all the relevant COM headers.

Hope that helps...

How to enable hibernation support in VC++?

ErisonWu19-Aug-04 20:38

ErisonWu

19-Aug-04 20:38

Is there any Windows API to enable hibernation support?

I survey the "Power Management" part of MSDN,

and find that IsPwrHibernateAllowed() function can get

the status of hibernation support.

But I don't find fuction or other way to set the hibernation support Frown | :(

Jesa

Re: How to enable hibernation support in VC++?

geo_m20-Aug-04 3:53

geo_m

20-Aug-04 3:53

Hi,

look at SetSystemPowerState function. This allows you either to set the system into Stand-by or hibernate states.

MSDN Says:
The SetSystemPowerState function suspends the system by shutting power down. Depending on the ForceFlag parameter, the function either suspends operation immediately or requests permission from all applications and device drivers before doing so.

...

The calling process must have the SE_SHUTDOWN_NAME privilege.

Hope that helps

error LNK2019 using AFX_MODULE_STATE in Release version

sugumar19-Aug-04 20:08

sugumar

19-Aug-04 20:08

hi ,
i use the following code which works fine in Debug mode.
AFX_MODULE_STATE *pstMngSt;
pstMngSt = AfxGetStaticModuleState();
AFX_MANAGE_STATE(pstMngSt);
AfxSetModuleState(pstMngSt);
m_hInstance = pstMngSt->m_hCurrentInstanceHandle;

But when i use the same in Release version, i get
error LNK2019: unresolved external symbol "public: __thiscall AFX_MAINTAIN_STATE2::~AFX_MAINTAIN_STATE2(void)" (??1AFX_MAINTAIN_STATE2@@QAE@XZ) referenced in function "public: void __thiscall CModeMGMT::DispatchDllMsg(struct HWND__ *,unsigned int,unsigned int,long)"

Any library file to be included ?? Pls help me..

Thx
Sugu

Re: error LNK2019 using AFX_MODULE_STATE in Release version

Antony M Kancidrowski20-Aug-04 0:09

Antony M Kancidrowski

20-Aug-04 0:09

The easiest way to solve this problem is to compare the DEBUG settings with the RELEASE settings.

You will find that you have additional DEBUG libraries that are missing from the RELEASE settings. Add these to the RELEASE settings and all should be OK. I would advise you clean and rebuild the project (after you have made the changes).

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

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