Class as a parameter in a template function - C / C++ / MFC Discussion Boards

Build .Net app, and take it to a non .NET box.

Derek Smigelski13-Nov-02 5:32

13-Nov-02 5:32

Build .Net app, and take it to a non .NET box. Receive error DLL MFC70.d;ll could not be found. Is there a way to build in release mode so that it will have whatever files it needs no matter what box I take this program to? I want to avoid using an installation program.

Re: Build .Net app, and take it to a non .NET box.

benjymous13-Nov-02 6:18

benjymous

13-Nov-02 6:18

If it's a .NET app then you'll need the .NET runtimes installed on the target machine

--
Help me! I'm turning into a grapefruit!

Re: Build .Net app, and take it to a non .NET box.

Anders Molin13-Nov-02 8:30

Anders Molin

13-Nov-02 8:30

In the project settings, under general, you can select to use MFC in a static dll, then it's included in your program...

- Anders

Money talks, but all mine ever says is "Goodbye!"

How to check when a popup window closed?

Daniel Strigl13-Nov-02 4:44

Daniel Strigl

13-Nov-02 4:44

How can I check if a popup menu closed?
When I click with the right mouse button on my view I show a popup menu and mark something on the view (draw a rect where I clicked).
So, I want to know when the popup window is closed (switched off the screen) to redraw my view, so that my mark will be cleaned!
Is there any message the popup window send to the parent?

Daniel Wink | ;)

---------------------------
Never change a running system!

Re: How to check when a popup window closed?

benjymous13-Nov-02 5:11

benjymous

13-Nov-02 5:11

You could just send a message of your own before the window closes

--
Help me! I'm turning into a grapefruit!

Maximized and normal mdi child windows

Anonymous13-Nov-02 4:36

Anonymous

13-Nov-02 4:36

I want my application to have maximized mdi childs and normal (or restored) mdi childs at the same time. Like seen in the Opera web browser.

Any ideas where I can start looking?

Re: Maximized and normal mdi child windows

Neville Franks13-Nov-02 10:34

Neville Franks

13-Nov-02 10:34

I can't comment on Opera, but with MDI this isn't possible. When one MDI Child is maximized they all are and vice-versa. My guess is that Opera isn't using MDI. You can check with Spy++ or Russ's WinSpector++ here on CP.

Neville Franks, Author of ED for Windows. www.getsoft.com

Class as a parameter in a template function

Hostalet Wandosell13-Nov-02 4:25

Hostalet Wandosell

13-Nov-02 4:25

I have the following problem trying to pass a class as a parameter in a template function:

I am using a function like this:
pMainFrame->PlugNewModule(RobCtrlPage::IDD,RUNTIME_CLASS(RobCtrlPage));

the function looks like:
PlugNewModule(UINT nID, CRuntimeClass* pRTC)
{
UINT ID = nID;
CRuntimeClass* _pRTC = pRTC;
...
}

the question is, IDD belongs to RobCtrlPage, if we pass the class as a parameter we make the function easier. SOmething like:

template<typedef t=""> PlugNewModule()
{
UINT ID = T::IDD;
CRuntimeClass* _pRTC = RUNTIME_CLASS(T);
...
}

This way is easier because we just write
PlugNewModule<robctrlpage>();
instead of
PlugNewModule(RobCtrlPage::IDD,RUNTIME_CLASS(RobCtrlPage));

but i cannot compile Frown | :(

Why ????

I am using Visual Studio 6.0

Thanks !

-----
Mit freundlichen Grüssen/Best Regards/Un cordial saludo.

Ing. José Manuel Hostalet Wandosell, Fraunhofer IPA, Abt.323/Robotersysteme
Nobelstrasse 12, D-70569 Stuttgart (Germany)
mailto:jose.hostalet@ipa.fhg.de, http://www.ipa.fhg.de

Re: Class as a parameter in a template function

Joaquín M López Muñoz13-Nov-02 9:52

Joaquín M López Muñoz

13-Nov-02 9:52

Hi! Your post does not show <s and >s properly, next time you can check the "Display this message as-is (no HTML)" option (just above the edit area). Nevertheless, I've managed to read it through the source code of the page.

As for the problem, the correct syntax for calling the member function is

pMainFrame->template PlugNewModule<RobCtrlPage>();

Try it (if you please Smile | :)

) and tell us if it worked. Even so, it's possible that you experience some problems (due to a bug in VC++) resulting in the function being called for a type different to what you specified! If so, please report it back, the thing could possibly be workarounded.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Class as a parameter in a template function

Hostalet Wandosell13-Nov-02 22:09

Hostalet Wandosell

13-Nov-02 22:09

No, it doesn't.

I've got ...

warning C4042: 'identifier' : has bad storage class
error C2951: template declarations are only permitted at global or namespace scope

Confused | :confused:

-----
Mit freundlichen Grüssen/Best Regards/Un cordial saludo.

Ing. José Manuel Hostalet Wandosell, Fraunhofer IPA, Abt.323/Robotersysteme
Nobelstrasse 12, D-70569 Stuttgart (Germany)
mailto:jose.hostalet@ipa.fhg.de, http://www.ipa.fhg.de

recursively search the registry and delete text found

Derek Smigelski13-Nov-02 4:20

Derek Smigelski

13-Nov-02 4:20

I would like some help. I need source code that will recursively search the registry and delete text found. It would need to work on 95/98/NT/XP/2000. Any ideas? Any help is appreciated.

Thank You,
Derek

Re: recursively search the registry and delete text found

Derek Smigelski13-Nov-02 10:42

Derek Smigelski

13-Nov-02 10:42

I'm looking to return a list (perhaps in a list box) of all keys (ALL TEXT) that were found. If that Text appears anywhere in registry I want it added to my list. Then I can select/deselect what I wish and then delete the selected items. Allow someone to highlight and delete specific ones.

Why connect() fails in the worker thread but succeeds in the main thread?

Wenrich13-Nov-02 4:14

Wenrich

13-Nov-02 4:14

In my MFC application running on Win2k, the following code
fails in a worker thread, but succeeds in the main thread.
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(PORT);
servaddr.sin_addr.S_addr = IP;
int ret = connect(sockfd, (struct sockaddr *)
&servaddr, sizeof(servaddr));
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

In the worker thread, the error is always WSAETIMEDOUT,
never succeeds! But the same code in an applicaiton running
on WinCE works well! What's wrong with it?

Thanks a lot!

Re: Why connect() fails in the worker thread but succeeds in the main thread?

RobJones13-Nov-02 10:30

RobJones

13-Nov-02 10:30

I believe you need to use a UI type thread instead of a worker thread because the worker thread doesn't have a message pump..

Rob

Status bar "CAPS" value not showing up.

WREY13-Nov-02 4:03

WREY

13-Nov-02 4:03

This is the array for the status bar:

static UINT nIndicators[] = { ID_SEPARATOR,
ID_INDICATOR_LINE,
ID_INDICATOR_CAPS,
ID_INDICATOR_NUM
};

==============================

and this is the function setting the indicators:

m_wndStatusBar.SetIndicators(nIndicators, 4);

==============================

Still, on the status bar, everything else shows up except "CAPS". Does anyone have any idea why?

Thanks! I appreciate it.

William

Got if figured out.

WREY13-Nov-02 5:02

WREY

13-Nov-02 5:02

No need to reply to this concern. I've already found out the reason.

Thanks.

William

Help

ed987113-Nov-02 4:00

ed9871

13-Nov-02 4:00

Sorry for the repost but after working with this almost all night I am still stuck --

I am having a problem using print and printpreview in a FormView.

If I build using MFC as a shared dll, all works as it should.

If I build using MFC as a static library, I get an error when the print function tries to create the dialog to show print status. Apparently when

Create(CPrintingDialog::IDD, pParent);

gets called in the CPrintingDialog contructor,

if (!_AfxCheckDialogTemplate(lpszTemplateName, FALSE))<br />
{<br />
ASSERT(FALSE); // invalid dialog template name<br />
PostNcDestroy(); // cleanup if Create fails too soon<br />
return FALSE;<br />
}

in CDialog::Create fails because there isn't a valid document template name. Is this the document template name of my form view or one created by MFC for the print dialog? How do I make sure it gets set? I need to compile using MFC as a static library due to installation on other Windows versions.

Ed

Re: Help

RobJones13-Nov-02 10:38

RobJones

13-Nov-02 10:38

this might help..

Link[^]

realloc

Hugo Hallman13-Nov-02 3:45

Hugo Hallman

13-Nov-02 3:45

Is it save to realloc a newed buffer, or do one have to use malloc?

<br />
LPBYTE pBuffer = new BYTE[1024];<br />
pBuffer = realloc(pBuffer,2048);<br />
delete[] pBuffer;<br />
<br />
// can I free(pBuffer) ?<br />

Re: realloc

dabs13-Nov-02 3:54

dabs

13-Nov-02 3:54

I believe the result is undefined so you should try to avoid code like this. Might work until one day... probably the day when you are showing your project to a potential customer Smile | :)

Wenn ist das Nunstück git und Slotermeyer? Ja! Beierhund das oder die Flipperwaldt gersput!

Re: realloc

jbarton13-Nov-02 3:55

jbarton

13-Nov-02 3:55

It is undefined when you use realloc on a buffer that you allocated with new.

Probably the best way to do this type of operation is to use a vector instead:

<br />
std::vector<BYTE> myBuffer(1024);   // declare a vector with 1024 elements<br />
myBuffer.resize(2048);   // resize it to 2048 elements<br />
<br />
// no need to free - the vector will clean up after itself...<br />

Best regards,
John

Re: realloc

Hugo Hallman13-Nov-02 7:22

Hugo Hallman

13-Nov-02 7:22

if you step into the new-handler, it actually calls malloc.
Do you consider that when stating that it's undefined?
Thank you for your answer.

The reason that I ask, is that I'm writing a specialized buffer, and thus cannot use std::vector.

I am using malloc, but just out of curiosity.

Re: realloc

Tim Smith13-Nov-02 7:39

Tim Smith

13-Nov-02 7:39

You can not mix and match new/delete with malloc/free/realloc. Just because version of the compiler implemented it using malloc means that the same will work for a different version.

The standard specifically states that delete can only be used with new.

Tim Smith

I'm going to patent thought. I have yet to see any prior art.

Re: realloc

jbarton13-Nov-02 7:50

jbarton

13-Nov-02 7:50

Although the current compiler you are using calls malloc as part of its implementation of the new-handler, this is not specified by the C++ standard, and should not be relied on. Another compiler (or a more recent version of the compiler) can change the implementation so that malloc is not called. The result from calling realloc on a buffer allocated with new is undefined. While it may work with this version of the compiler when allocating a POD, it is not a good practice to rely upon an implementation detail that you have no control over. If you decide that realloc is the only way to go, don't use new for the original allocation - just use malloc.

You should be able to use a vector anywhere that you use a raw allocated buffer. What are you trying to do that you don't think will work with a vector?

CPropertyPage Brain Fart!!!

Chris Hambleton13-Nov-02 3:45

Chris Hambleton

13-Nov-02 3:45

Hi,

Looks like I'm having a brain fart this morning and can't remember how to cancel the closing of a property sheet.

I have two property pages, and I validate some settings in the CMyPropPage1::OnOk() handler. If the settings are invalid, I display a msgbox to the user and want to leave the property sheet displayed. However, it's closing after the user closes the msgbox! When the settings are invalid, I simply return from the handler (which appears to be wrong...). So, what do I have to do to keep it displayed??

Thanks!

Chris

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