Why this is different? (CString copying over pszTitle)... - C / C++ / MFC Discussion Boards

Re: Changing menu background color (Win32)

Michael Dunn19-Mar-03 9:05

19-Mar-03 9:05

You can do that with SetMenuInfo() and set a new background brush - only works on 98+ and 2000+ however.

--Mike--
THERE IS NO THERE IS NO BUT THERE IS MAGIC PIXIE DUST BUSINESS GENIE CODE PROJECT

Homepage | RightClick-Encrypt | 1ClickPicGrabber
"Which comes first, the bug or the stress?" -- Chris Maunder

Re: Changing menu background color (Win32)

georgiek5019-Mar-03 12:25

georgiek50

19-Mar-03 12:25

Thats quite strange that it wouldn't work with XP. I tried it anyways but even though the class members where showing up when I was filling in my MENUINFO struct the program failed to compile because MENUINFO was not recognized...Does this have anything to do with me running XP (I doubt it, I think...) and windows.h is included.

Regardless, what are some better alternatives to take care of XP Windows and below?

Re: Changing menu background color (Win32)

Big Art21-Mar-03 6:31

Big Art

21-Mar-03 6:31

It does work with XP. I tried it on my XP machine and it works beautifully.
Are you declaring your CBrush object as a class member so it doesn't go out of scope?

Art

/////////////////
From MSDN
/////////////////

The MENUINFO structure contains information about a menu.

typedef struct tagMENUINFO {
DWORD cbSize;
DWORD fMask;
DWORD dwStyle;
UINT cyMax;
HBRUSH hbrBack;
DWORD dwContextHelpID;
ULONG_PTR dwMenuData;
} MENUINFO, FAR *LPMENUINFO;
typedef MENUINFO CONST FAR *LPCMENUINFO;

Requirements
Windows NT/2000/XP: Included in Windows 2000 and later.
Windows 95/98/Me: Included in Windows 98 and later.
Header: Declared in Winuser.h; include Windows.h.

Re: Changing menu background color (Win32)

Anonymous21-Mar-03 6:59

Anonymous

21-Mar-03 6:59

Actually when I declare a MENUINFO struct eg. MENUINFO mi and then proceed to iniatilize the members of MENUINFO they are coming up on the classwizard (or whatever it is called). When I try to compile it though it does not recognize MENUINFO or SetMenuItem. I have included Windows.h. Are there any other headers necessary for it to work? (I am using Visual C++ 6.0)

Re: Changing menu background color (Win32)

Big Art21-Mar-03 10:46

Big Art

21-Mar-03 10:46

I am using VC++ 7.0 but that shouldn't matter here.

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
...

CMenu *pMainMenu=GetMenu();
if(pMainMenu == NULL)
return...

CBitmap bm1;
bm1.LoadBitmap(IDB_MENU); //I made a small gradient bitmap (IDB_MENU)
m_MenuBrush.CreatePatternBrush(&bm1); //m_MenuBrush is a CBrush

MENUINFO mi;
mi.cbSize = sizeof(MENUINFO);
mi.fMask = MIM_BACKGROUND;
mi.hbrBack =m_MenuBrush;

CMenu* pMenuSub0 = pMainMenu->GetSubMenu(0); //File
CMenu* pMenuSub1 = pMainMenu->GetSubMenu(1); //Edit
CMenu* pMenuSub2 = pMainMenu->GetSubMenu(2); //View
CMenu* pMenuSub3 = pMainMenu->GetSubMenu(3); //About

// TODO: Should do some error checks for NULL pointers...
pMenuSub0->SetMenuInfo(&mi);
pMenuSub1->SetMenuInfo(&mi);
pMenuSub2->SetMenuInfo(&mi);
pMenuSub3->SetMenuInfo(&mi);

}

Art

SSL Client for desktop Windows

Matthew Fleming19-Mar-03 8:11

Matthew Fleming

19-Mar-03 8:11

Netmeisters,

I need to write an SSL client in C++ for desktop Windows. I've read Rescorla's excellent SSL book and done a fair amount of SSL programming, using C and openSSL for Linux, eVC++ for the Pocket PC, and java. Although the Pocket PC project might seem similar, apparently WinCE provides quite different SSL facilities than desktop Windows. I haven't found any books on the subject (Rescorla explicitly avoids Windows) and I haven't found much on msdn.

So I'd really appreciate a pointer to some documentation that might help me get started. I'd like to know if desktop Windows provides facilities for SSL, and if so, how to use them. (If not, I'll just use openSSL.)

Thanks very much,

Matthew Fleming
mgf@mcw.edu

Re: SSL Client for desktop Windows

geo_m19-Mar-03 10:29

geo_m

19-Mar-03 10:29

Maybe this can be some starter for you:
http://www.codeproject.com/internet/sslsocket.asp[^]

This is an example of client-server connection, you can find all functions required for that and then search for appropriate documentation when needed.

Why this is different? (CString copying over pszTitle)...

Joan M19-Mar-03 7:47

Joan M

19-Mar-03 7:47

I have an array of property pages and I change their caption/title dynamically...

This works in the commented way, but when I try to do it using the non commented way, it crashes... (I'd like to know why)...

PREMISSES:

THE CASE THAT WORKS:
I have an array of property pages.
I have an array of titles.
Those two are members of the property sheet class.
THE CASE THAT DON'T WORKS:
I have an array of property pages.
I have one CString var declared inside the cosntructor of the property sheet class that will be used to store all the titles in the property pages...

THE CODE

{
...

this->m_ArrPPDlgParametritzacions[iNumPPags].m_psp.dwFlags |= PSP_USETITLE;  <code>// NOTHING TO DO...</code>
this->m_ArrPPDlgParametritzacions[iNumPPags].m_psp.dwFlags &= ~PSP_HASHELP; <code>// NOTHING TO DO...</code>
					
//m_ArrTitolsPropertyPages[iNumPPags].Format("%s",((char *)pxmlNode->attributes->getNamedItem("EtiquetaDescriptiva")->Gettext()));  <code>// THIS ONE WORKS OK...</code>

csTitolPPag = ((char *)pxmlNode->attributes->getNamedItem("EtiquetaDescriptiva")->Gettext()); <code>// THIS ONE WILL FAIL...</code>

this->m_ArrPPDlgParametritzacions[iNumPPags].m_psp.pszTitle = csTitolPPag;//m_ArrTitolsPropertyPages[iNumPPags];  <code>// IF I USE THE COMMENTED CODE EVERYTHING IS ALLRIGHT, BUT IF I USE THE ONE THAT's NOT COMMENTED, THEN THE TITLES ARE STRANGE (SOMETHING LIKE THIS:"@#~|@#€|~€|~|"...)</code>
					
this->AddPage(&m_ArrPPDlgParametritzacions[iNumPPags]); <code>// NOTHING TO DO...</code>

iNumPPags++; <code>// NOTHING TO DO...</code>
}

Any idea?

It's not a vital thing, I can live having an array of CStrings using memory, but it would be better to be able to do it without the array...

thank you in advance...

Re: Why this is different? (CString copying over pszTitle)...

Tim Smith19-Mar-03 8:02

Tim Smith

19-Mar-03 8:02

I would imagine that csTitolPPag is just a local string variable. The problem you are having is that

this->m_ArrPPDlgParametritzacions[iNumPPags].m_psp.pszTitle

is nothing more than a pointer to a character string. So when csTitolPPag goes out of scope, the string is deleted and thus pszTitle now points to trash.

Tim Smith

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

Re: Why this is different? (CString copying over pszTitle)...

Joan M19-Mar-03 8:07

Joan M

19-Mar-03 8:07

This is what I think, but is there any way to do it assigning the content, and not the direction?

Thank you in advance...

Re: Why this is different? (CString copying over pszTitle)...

David Spain24-Mar-03 12:36

David Spain

24-Mar-03 12:36

You would have to find the length of the string you are copying, then allocate a character array on the heap with length + 1 size, do a memset to set this new memory to 0, do a memcpy from the CString's psz pointer to this new memory, then set the array psz to be the new pointer. That way the memory will always be there in the array psz. Just be sure to do a delete [] on this array psz when this array is no longer needed, or will get a memory leak. (The memset to 0 may not be needed, it may be done automatically when call new.)

David Spain

Load the resource by his name

Eugene Pustovoyt19-Mar-03 7:34

Eugene Pustovoyt

19-Mar-03 7:34

Hi How to load a resource on his name (for example IDB_BITMAP1), but it is not known ID. And whether it is possible?

Best regards,
Eugene Pustovoyt

Re: Load the resource by his name

berndg19-Mar-03 7:45

berndg

19-Mar-03 7:45

IDB_WHATEVER is a mnemonic for a numerical ID, not a name. The mnemonic is #define'ed in a header file named resource.h by default.
Maybe you have just forgotten to #include resource.h?
Bernd

Re: Load the resource by his name

georgiek5019-Mar-03 8:14

georgiek50

19-Mar-03 8:14

Do you mean load it as a string name? If you are asking that exclude the MAKEINTRESOURCE parameter, I don't really understand the question though...

Where do I find....?

JohnnyG19-Mar-03 7:25

JohnnyG

19-Mar-03 7:25

Stupid question but I couldn't find it in the search. I know its been asked before. Is there a way to convert a VC7 project to VC6? I'd like to convert this code to VC6: http://www.codeproject.com/useritems/Savior.asp[^]

Re: Where do I find....?

Eugene Pustovoyt19-Mar-03 7:41

Eugene Pustovoyt

19-Mar-03 7:41

Look this VC++7 to VC++6 project converter

Best regards,
Eugene Pustovoyt

Re: Where do I find....?

JohnnyG19-Mar-03 8:11

JohnnyG

19-Mar-03 8:11

Cool. Thanks. Big Grin | :-D

Syncronizing thread destruction?

clintsinger19-Mar-03 7:10

clintsinger

19-Mar-03 7:10

Hi Everyone,

I have an application that has a thread within a thread. When I delete the parent it is suppose to delete the child thread within the destructor. Unforetunately I am running into problems where the memory has already been freed (at least that is what I think has happened) and trying to free the resources are used by the threads.

When I run the application through boundschecker I don't see this problem at all so I think it has to do with some race condition. Is there some documentation on how to properly and effectively control the destruction of threads?

Cheers,
Clint

Re: Syncronizing thread destruction?

Neville Franks19-Mar-03 8:51

Neville Franks

19-Mar-03 8:51

What do you mean by "delete" the thread? The parent thread should ask the child thread to end, and then it should end. Using CEvent is a good way to do this.

Neville Franks, Author of ED for Windows. www.getsoft.com
Make money with our new Affilate program

Re: Syncronizing thread destruction?

valikac19-Mar-03 12:10

valikac

19-Mar-03 12:10

Post an example of how you terminate the child thread.

Kuphryn

Re: Syncronizing thread destruction?

clintsinger21-Mar-03 4:28

clintsinger

21-Mar-03 4:28

I was using an user interface thread to do the trick. I changed over to a worker thread and now everything seems to be better. I think the problem had to do with the self deleting nature of user threads. Now I explicitly control who deletes and when.

Sincerly,
Clint

CompareItem

Anthony988719-Mar-03 5:33

Anthony9887

19-Mar-03 5:33

How do I implement the CompareItem for a combobox inside a dialog control. So I can create my own sort routine.

Thanks

Re: CompareItem

C^hris L^osinger19-Mar-03 5:46

C^hris L^osinger

19-Mar-03 5:46

override OnCompareItem for the combo, then use the COMPAREITEMSTRUCTs that you will receive in that function to determine which two items are being compared. return -1,0,1 as appropriate.

Image tools: ThumbNailer, Bobber, TIFFAssembler

mfc installation dependencies???

work_to_live19-Mar-03 5:02

work_to_live

19-Mar-03 5:02

I used dependency walker to check the dependencies of my static mfc application, and got a list of core and other dependencies. I'm leary about including too many of these in my installation utility, so I was wondering if there is a list of dll's by OS (Win2000, Win95...) that are guaranteed to be present?

Any other comments/cautions regarding distributing dll's with an application would be welcome! Smile | :)

Thanks.

Re: mfc installation dependencies???

Nish Nishant19-Mar-03 5:37

Nish Nishant

19-Mar-03 5:37

It's safest to include them anyway because the DLLs you require might not be the same version as in the OS. The installer will do a version check and only if the version is newer will it overwirte it.

Regards,
Nish

p.s. One brute force technique I've used is to run my application on a fresh install of each OS Blush | :O

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.