C / C++ / MFC Discussion Boards

mcsherry31-Jan-05 21:44

31-Jan-05 21:44

thanks DavidCrow,

unfortunately the program we are coding has a lot of legacy code and libraries in it which clash with a lot of new libraries. We have found that we can use the automation features in Office which don't cause these clashes.

I've already added the type library however I'm not sure the order in which I create the various objects and also what (if any) parameters I need to pass into their constructors. If you could give me any guidance on this it would be most helpfull.

cheers,
Andy

Re: Automating MS Access

David Crow1-Feb-05 3:21

David Crow

1-Feb-05 3:21

Unless you are needing something specific from Access (e.g., form, query, report), I think it would be easier to use DAO. Look in the C:\Program Files\Common Files\Microsoft Shared\DAO folder for the type library. Unfortunately the only example I could put together is in VB.

It's helpful to use VB's Object Browser and the C:\Program Files\Common Files\Microsoft Office\Office\1033\Acmain9.chm help file for figuring out classes and objects from the type library.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: Automating MS Access

Bob Flynn31-Jan-05 5:25

Bob Flynn

31-Jan-05 5:25

Yes these are all possible. There are some good articles with ADO classes to facilitate this by Carlos Antollini in the database section.

Is this possbile???

rlepine31-Jan-05 3:26

rlepine

31-Jan-05 3:26

I'm trying to load a .db file as a custom resource and then write it out at runtime. I can load the .db and get a resource id and it builds fine, but can't figure out how to write the file out at runtime.
Is this even possbible?

Thanks in advance,

Ron

Re: Is this possbile???

User 665831-Jan-05 3:40

User 6658

31-Jan-05 3:40

Some months ago I used this code to write a resource to a file:

FILE *outfile;
if (outfile = fopen(OutDLL, "wb"))
{
	fwrite(dll, 1, dll_size, outfile);
	fclose(outfile);
}

dll is a void*-pointer to the resource, dll_size the size of the resource

regards

modified 12-Sep-18 21:01pm.

Re: Is this possbile???

rlepine31-Jan-05 3:45

rlepine

31-Jan-05 3:45

Thanks,

What I don't understand is how to address the resource. For example, I have a resource ID IDR_DB that I loaded at design time. How do I read it so as to write it to a file.

Thanks for help,

Ron

Re: Is this possbile???

David Crow31-Jan-05 3:52

David Crow

31-Jan-05 3:52

rlepine wrote:
Is this even possbible?

Yes. See here for an example.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: Is this possbile???

rlepine31-Jan-05 3:58

rlepine

31-Jan-05 3:58

Appears to be just what I needed.

Thank you very much,

Ron

maintaining layout of window

doneirik31-Jan-05 2:36

doneirik

31-Jan-05 2:36

hi
What do I have to do to maintain the layout of a Form when I maximize the window?

Is it possible to desig the GUI working in a window that is 50% smaller than the final GUI and configure the window to maximize when executing such that all the containers in the form maintain its position in relation to the borders AND resizes. (i.e. if I maximize the window from 50% to 100& I want all the containers to double in size as well)

doneirik

Re: maintaining layout of window

Maximilien31-Jan-05 2:42

Maximilien

31-Jan-05 2:42

(assuming you're using MFC/win32 UI code )

you need to handle the resizing of the UI manually, handle the WM_SIZE message and resize and reposition each control.

or you could use a layout manager, have a look here at CP for different layout managers.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: maintaining layout of window

BlackDice31-Jan-05 5:45

BlackDice

31-Jan-05 5:45

the best one i've seen so far is the 'EasySize' article here on CP

My articles

www.stillwaterexpress.com

BlackDice

Posting File Open Dialog

Sreenivasa.Murthy.G31-Jan-05 1:53

Sreenivasa.Murthy.G

31-Jan-05 1:53

Hi all,
i need your help urgently.
i am facing problem with posting a DoModal FileOpenDialog from property sheet. i will explian my problem this way.

I hava a dialog D1 derived from CDialog. in its OnInitDialog(), i created a propertysheet PS1 at run time with D1 as parent, and PS1 having WS_CHILD | WS_VISIBLE as creation styles. PS1 has 2 propertypages - PP1, PP2 - added to it. PP1 has OPEN button. On Clicking OPEN, i need to post FileOpenDialog Box. My code is as below:

D1.cpp
-------
BOOL CD1::OnInitDialog()
{
CPropertySheet *PS1;
PS1 = new CPropertySheet("", this, 0) ;

CPropertyPage *pp1 = new PP1() ;
CPropertyPage *pp2 = new PP2() ;

PS1->AddPage(pp1) ;
PS2->AddPage(pp2) ;

PP1->Create(this, WS_CHILD | WS_VISIBLE) ;
PP1->ShowWindow(1) ;
}

PP1.cpp

void PP1::OnBtnOpen()
{
CString fileName ;
char charFilter[256] ;
char fileExt[100] ;
char *filename ;

strcpy(charFilter, "File Filter (.mmm)|*.mmm|") ;
strcpy(fileExt, "mwf") ;

CFileDialog fileDialog(TRUE, // Open File Dialog
fileExt, // default extension
NULL, // Initial File Name
OFN_HIDEREADONLY |
OFN_OVERWRITEPROMPT |
FILE_ATTRIBUTE_DIRECTORY,
charFilter, // File Filters
AfxGetMainWnd() ); // Parent Window

if( fileDialog.DoModal() == IDOK )
{
return ;
}
}

my application hangs at fileDialog.DoModal().

Please help me in rectifying it.

Re: Posting File Open Dialog

ThatsAlok31-Jan-05 2:55

ThatsAlok

31-Jan-05 2:55

Sreenivasa.Murthy.G wrote:
strcpy(charFilter, "File Filter (.mmm)|*.mmm|") ;

filter always end by Double | operator i.e. ||.
this may be causing the problem.

right way to write charFilter is
strcpy(charFilter, "File Filter (.mmm)|*.mmm||") ;

"I Think this Will Help"
<h5
alok gupta="" <br=""> visit me at http://www.thisisalok.tk

Resource leak

Abyss31-Jan-05 1:45

Abyss

31-Jan-05 1:45

How can I detect resource leaks in my VC code. There are several articles on CodeProject which addresses the memory leak detection however I couldn't find any about resource leak detection. Any ideas?

Re: Resource leak

David Crow31-Jan-05 3:55

David Crow

31-Jan-05 3:55

How are you confirming that resource leaks are happening?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: Resource leak

Blake Miller31-Jan-05 5:45

Blake Miller

31-Jan-05 5:45

I have not tried this one yet...
http://www.geocities.com/accentc/itchy.html

Re: Resource leak

Abyss31-Jan-05 20:48

Abyss

31-Jan-05 20:48

Well, such third party projects work but I would like to implement it myself. Something like memory leak detector http://www.codeproject.com/cpp/MemLeakDetect.asp[^]. Any ideas how to do it?

Task bar does not pop up

normanS31-Jan-05 1:43

normanS

31-Jan-05 1:43

I have a Windows application programmed in C (SDK level) using VC6. My Windows 98 and Windows XP (on different PCs) are set up with task bar "Always on top" & "Auto-hide".

With my application window having the focus and maximised, the task bar pops correctly in Win98 when I bring the mouse pointer to the bottom of the monitor, but on XP, the task bar does not popup.

I register the window as:

memset(&wc,0,sizeof(wc));<br />
wc.style = CS_BYTEALIGNWINDOW | CS_VREDRAW | CS_HREDRAW | CS_DBLCLKS;<br />
wc.lpfnWndProc   = MainWindowProc;<br />
wc.cbClsExtra    = 0;<br />
wc.cbWndExtra    = 0;<br />
wc.hInstance     = hAppInst;<br />
wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION);<br />
wc.hCursor       = LoadCursor (NULL, IDC_ARROW);<br />
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);<br />
wc.lpszMenuName  = NULL;<br />
wc.lpszClassName = szAppName;<br />
<br />
RegisterClass (&wc);

and I create the window as:

hwndPrimary = CreateWindow(szAppName,  // window class name<br />
	szPrimaryTitleBar,<br />
	WS_POPUP | WS_BORDER, // No title bar, thin border, not resizeable!<br />
	CW_USEDEFAULT,               // initial x position<br />
	CW_USEDEFAULT,               // initial y position<br />
	CW_USEDEFAULT,               // initial x size<br />
	CW_USEDEFAULT,               // initial y size<br />
	NULL,                        // parent window handle<br />
	NULL,                        // window menu handle<br />
	hAppInst,                    // program instance handle<br />
	NULL);                       // creation parameters

and then do:

ShowWindow(hwndPrimary,sw);<br />
<br />
ShowWindow(hwndPrimary, SW_MAXIMIZE);

Note - I use window style WS_POPUP | WS_BORDER because I need maximum size client area. I can't waste space on title bar, thick border, etc.

If I do not maximise the window, the task bar pops up just fine, but the moment the application is maximised (which I need to do), the task bar does not pop up properly. The problem only occurs under Windows XP. When I run the EXE under Win98, the task bar pops up as expected.

Any suggestions?

Static linking for ActiveX controls.

pc_dev30-Jan-05 23:50

pc_dev

30-Jan-05 23:50

Statically linking a project includes all code in dll into exe file, so the dll is no more needed on target machine, how can we do same fo activex controls, ie linking or using in such a way that they are included in exe and no more need for installing/registring on target machines?

Re: Static linking for ActiveX controls.

Cedric Moonen30-Jan-05 23:58

Cedric Moonen

30-Jan-05 23:58

Dll are never statically linked to an exe !! Lib files are statically linked but dll never (a lib file is the same that a dll file, except that here the linkage is static and with a dll the linkage is dynamic).
So, for activeX, you cannot statically link them to your project. You need to install and register them if you want to use them on a target machine.

serial com port

syed abbdul qavi30-Jan-05 23:26

syed abbdul qavi

30-Jan-05 23:26

i already know how to communicate through th serial port but i am not able to control the CTS, RTS and DTR pins of the Com port.. please tell me how to change the status of these pins in VC++ 6 through API.

syed abdul qavi

Re: serial com port

Cedric Moonen30-Jan-05 23:35

Cedric Moonen

30-Jan-05 23:35

Take a look at the EscapeCommFunction (for setting/clearing RTS and DTR) and at GetCommModemStatus to get the status of the CTS line.

Re: serial com port

syed abbdul qavi7-Feb-05 18:30

syed abbdul qavi

7-Feb-05 18:30

i m success to setting RTS and DTR but anable to get status of CTS and DSR i m trying GetCommModemStatus but i m not success to get so plz. tell me how to get status of that pins.

thanx

Syed Abdul Qavi

Generated #include lines format in VC 7.1

rbid30-Jan-05 22:46

rbid

30-Jan-05 22:46

Hello,

Is there a way to configure the way VC generates the #include statements?

Keep/Generate header file names case sensitive. (When using the 'Add Variable' wizard to add a member variable to one of your dialogs, the wizard will add the name of the corresponding header file but using lowercase letters)
Do not use 'Absolute' Paths. (When creating classes, it adds an absolute path to the base class header file when the base class is one of your generic classes)

Is there a way to configure this?.
Is this OS deppendent? (If yes, where to configure it?)

-- Ricky Marek (AKA: rbid)
-- "Things are only impossible until they are not" --- Jean-Luc Picard

My articles

JPG2AVI

yingkou30-Jan-05 20:51

yingkou

30-Jan-05 20:51

I want to combine a lot of .jpg Files to an AVI File,what should I do? could you give me example?

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