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Re: MFC -- verifying that a folder exists

Derek Waters17-Jul-01 17:37

Derek Waters

17-Jul-01 17:37

Try:

if (GetFileAttributes("My filename") & FILE_ATTRIBUTE_DIRECTORY)
{
// The directory exists
}

------------------------
Derek Waters
derek@lj-oz.com

coloured scroll bars

Nick Blumhardt17-Jul-01 16:45

Nick Blumhardt

17-Jul-01 16:45

Are the coloured scroll bars (on the codeproject website if you have IE5.5+) able to be achieved in C++ apps? i.e., is there a new version of the common controls with an extended FlatSB api or what???

Would be so perfect for some stuff we're doing here.

Nb

Sending Email in Win32

Nick Blumhardt17-Jul-01 12:49

Nick Blumhardt

17-Jul-01 12:49

Hi all,

Is there an API function to send emails? We need to send email from an NT service... haven't come across anything so far.

thanks

n

Re: Sending Email in Win32

17-Jul-01 15:11

How do you want to do it? MAPI, sockets, something else?

Re: Sending Email in Win32

Nick Blumhardt17-Jul-01 16:42

Nick Blumhardt

17-Jul-01 16:42

oops- MAPI is what I was looking for Blush | :O

Re: Sending Email in Win32

18-Jul-01 2:22

Check MSDN, the MAPI methods, oddly enough, are prefixed with mapi. I.E. MAPILogon, MAPISendMail, etc.

Controls.

John Uhlenbrock17-Jul-01 12:25

John Uhlenbrock

17-Jul-01 12:25

I have a group-box enclosing 4 check boxes. I want to keep the group box, but I also want to be able to check any number of the check boxes. How can I do this?

As well, how can I keep my SDI formview based app from being re-sized?

Thanks, John.

Re: Controls.

Tim Deveaux17-Jul-01 14:06

Tim Deveaux

17-Jul-01 14:06

Er - from memory if you play with the Group check box in the properties of the cb controls, you should get it - works for radio buttons too I think.

In InitInstance you'll see the main window handled - if you call ModifyStyle to remove the WS_THICKFRAME style for it you should effectively make the window unresizable. Hmmmm might look at WM_MAXIMIZEBOX as well..

Re: Controls.

Michael Dunn17-Jul-01 14:13

Michael Dunn

17-Jul-01 14:13

Check a checkbox with CheckDlgButton() - it doesn't matter how many you have or whether they're in a group box.

--Mike--
http://home.inreach.com/mdunn/
Sometimes, arming yourself with a big pointy stake just won't do you any good.

Dialog bars.

John Uhlenbrock17-Jul-01 11:36

John Uhlenbrock

17-Jul-01 11:36

Still looking for an answer to....

MSDN states:

"While it is normal to derive your own dialog classes from CDialog, you do not typically derive your own class for a dialog bar. Dialog bars are extensions to a main window and any dialog-bar control-notification messages, such as BN_CLICKED or EN_CHANGE, will be sent to the parent of the dialog bar — the main window."

I do not know how to use a dialog bar's controls. I can load the dialog bar, but I can't activate the bottons so they may be pressed, I can't set text in textboxes, I can't set the status of check-boxes. How are you supposed to get variables associated with the controls on the dialog bar if you don't have a derived class.

Thanks, John

Re: Dialog bars.

Tomasz Sowinski17-Jul-01 23:24

Tomasz Sowinski

17-Jul-01 23:24

Your need a command handler implemented in CMainFrame class to enable button and respond to events. You just have to add this manually. Assuming that your button has and IDC_BUTTON1 id, you have to:

1) insert member declaration in Mainfrm.h:

afx_msg void OnButton1();

Add this line outside the //{{AFX_MSG block

2) insert member definition in Mainfrm.cpp

void CMainFrame::OnButton1() 
{
	AfxMessageBox("Button1 pressed.");	
}

3) add appropriate entry to message map in Mainfrm.cpp

ON_COMMAND(IDC_BUTTON1, OnButton1)

It's safer to have this line outside the //{{AFX_MSG_MAP block - ClassWizard has the tendency to overwrite stuff inside //{{AFX_xxx.

Well, that's all - you should see the msgbox after pressing the button. If you want to conditionally enable/disable control (like toolbar buttons or menu items), use ON_UPDATE_COMMAND_UI macro.

How are you supposed to get variables associated with the controls on the dialog bar if you don't have a derived class
Your CMainFrame probably has a CDialogBar member, say m_dlgbar. Use m_dlgbar.GetDlgItem(IDC_YOURCONTROL) to get access to specific controls. For example, to get access to edit box located on a dialog bar, use this:

CEdit *pEdit = (CEdit *)m_dlgbar.GetDlgItem(IDC_MYEDIT1);

Tomasz Sowinski -- http://www.shooltz.com

Debug Question

17-Jul-01 11:21

Hi,

Is there a possibility to catch when the program is under debug mode of MSVC or not ? ( program is with the debug info in the both cases )

Re: Debug Question

Michael Dunn17-Jul-01 11:23

Michael Dunn

17-Jul-01 11:23

Call IsDebuggerPresent()

--Mike--
http://home.inreach.com/mdunn/
Sometimes, arming yourself with a big pointy stake just won't do you any good.

CToolbar::GetToolBarCtrl().SaveState

17-Jul-01 10:51

I would really appreciate it if someone would give me a little help with trying to get my program to save the state of the toolbars when I exit. I am using standard MFC generated CToolbar objects and calling the GetToolBarCtrl function to access the CToolbarCtrl functions and trying to use SaveState. Following is my code. The SettingsRegKey is a Cstring with the path to my program in the registry that already exists although the value the SaveState function is supposed to add does not. Any ideas why it is not working? Thank you very much

CString SettingsRegKey = _T("Software\\Star\\Star\\Settings");

m_wndStandardToolBar.GetToolBarCtrl().SaveState(HKEY_CURRENT_USER, SettingsRegKey, _T("Standard ToolBar"));

Docking Bar from DLL

Steve The Plant17-Jul-01 9:52

Steve The Plant

17-Jul-01 9:52

Hey!

I've got a plugin system working in my app and it works
great. One thing I'd like to be able to do is to have
some of the plug-ins automatically doc themselves to
the app window (like a toolbar). I've tried several
methods, but haven't figured it out yet.

Any help?

Steve The Plant

Re: Docking Bar from DLL

Steve The Plant17-Jul-01 16:12

Steve The Plant

17-Jul-01 16:12

I think I wrote that question too quickly. Smile | :)

I guess it would help to say that I'm working in MFC. And
that each plugin is stored in a DLL. So, that means I wonder
if there's a way to dock a toolbar (that's basically just
a CToolBar or Docking Dialog bar) stored inside a DLL onto my
main app frame.

I've tried passing the window handle and the actual pointer
of the main frame to the DLL and then trying to dock the
toolbar (contained inside the DLL), but it doesn't work. I
get assertions and other errors.

I do call that AFX_ function (forgot the name since I'm
not at work) inside each DLL function before doing anything
in MFC. Does anybody have any suggestions? Ideas?

Steve The Plant

Re: Docking Bar from DLL

Tomasz Sowinski17-Jul-01 23:09

Tomasz Sowinski

17-Jul-01 23:09

What kind of DLL it is? Is it an 'extension DLL' (sharing a copy of MFC with the app) or 'regular DLL'?

Tomasz Sowinski -- http://www.shooltz.com

Re: Docking Bar from DLL

Steve The Plant18-Jul-01 4:00

Steve The Plant

18-Jul-01 4:00

It's just a "regular" DLL. The Toolbar stored in the DLL would
be created and docked at runtime.

Steve The Plant

Re: Docking Bar from DLL

Tomasz Sowinski18-Jul-01 4:09

Tomasz Sowinski

18-Jul-01 4:09

You should consider using 'extension' dll - they should just snap into main exe and whole system would be one app from MFC point of view. Exe and dlls would share global maps used for mapping HWNDs to CWnds, etc. This makes passing CWnd pointer around possible. You can't achieve that with 'regular' dlls - the dll doesn't know that exe uses MFC and vice versa.

Tomasz Sowinski -- http://www.shooltz.com

Rich Edit Control

17-Jul-01 9:33

We are having a problem with the use of rich edit controls in a project.

The rich edit control seems to work fine with the debug build. However, the text gets distorted (the font changes and also its size) in the release build.

Any pointers?

Thanks!

Re: Rich Edit Control

17-Jul-01 11:51

I fixed it! Dead | X|

Font accent char and Win2000!

Kalai Kandasamy17-Jul-01 8:27

Kalai Kandasamy

17-Jul-01 8:27

I am building application in Win98 using RichEdit it works
fine on Win98,Win95 and Win Nt 4.0 but it gives the
follwing problem in Win 2000.

My program uses a font which has a accent like charecter.
What is accent charecter?
Accent char is a char drawn on a main char like (A`)
here main char is "A" and accent char is "`" drawn on top
of "A".
Now combained main and accent char is one char.

In Win95/98/NT 4.0/ it works fine but in Win2000 I am
seeing the following display problem:

Whenever a accent char is diplayed in Win2000 I am seeing
an Extra space. (example: this should displayed like "A`a"
instead in Win2000 it displayed like "A` a")

Here is how to reproduced the problem:
To reproduce this problem I am attaching a TTF font(which
is availabale for free from www.tamilnet99.org)

0) download font from: http://www.tamilnet99.org/font.htm

1) Install TABAnna.ttf into Win98 and Win2000.

2) use Charecter Map tool and choose the main charecter
says ("a")[U+0061] then choose the dot char (.)[U+00A2]
(i.e third char from "~")

3) Now it will display "a" and "dot" on top of it.
But if you choose one more char (say "b") now you will
see the extra SPACE between charecters.

4) It should be:"a(dot on top)b"
but itdisplayes: "a(dot on top)<space>b"

5)From charecter map tool copy and past the string to
WordPad it also shows the extra space between chareters.

6)Even a simple MFC (generated) program which uses
CRichEditView shows this problem.

7)Copy/past to MS word it looks FINE

8)If I display the string in a dialog, Edit Box or combo
box it looks fine.

Again this diaplay problem appears only of Win2000 not on
Win98 or Win NT 4.0.

NOTE:
This is not a UNICODE program and enableing and disabling
_MBCS does not make any difference!

Thanks...
Kalai
Smile | :)

How do I: Resolve undefined classes when...

C~~MFC6.0~~VS.NETUser17-Jul-01 7:54

C~~MFC6.0~~VS.NETUser

17-Jul-01 7:54

...on declarces one class and that class need needs a pointer back to the one that declared it.

I am working on a project that has two classes(named here as Root & Child). They are defined in the same header file an Child is defined before Root is defined. Root declarces Child as shown...

class Root
{
public:/*All memebers public*/
Child myChild;
/*Other memeber class, functions, and variables I want to access in Child.*/
}

Ok, now here come Child and want a point to Root so it can access Root's memebers. I define the class like this...

class Child
{
public:/*All memebers public*/
Root* pmyRoot;
/*Other memeber class, functions, and variables for this class*/
}

Now rememebering Child is defined first in the header when I compiled the project then compiler finds, while declaring the pointer to Root, that Root is undefinded. Same thing happens if the Root is defined before Child. The Child is only is going to be used by Root and won't be in a lib. for others to use so this dependent model is Ok(except for the pointer problem). I have tried using class reference forwarding and can up w/ the same undefining problem, but I am still new to class reference forwarding.

Is there way the to access a pointer back to the declaring Object?

Re: How do I: Resolve undefined classes when...

C^hris L^osinger17-Jul-01 8:06

C^hris L^osinger

17-Jul-01 8:06

try this:

in Root.h

class Root
{
public:/*All memebers public*/
Child myChild;
/*Other memeber class, functions, and variables I want to access in Child.*/
}

in Child.h

class Root;
class Child
{
public:/*All memebers public*/
Root* pmyRoot;
/*Other memeber class, functions, and variables for this class*/
}

------------------------------
Smaller Animals Software, Inc.
http://www.smalleranimals.com

Re: How do I: Resolve undefined classes when...

17-Jul-01 9:48

Do da' phrase "spaghetti" ring a bell?

Last Visit: 31-Dec-99 18:00 Last Update: 21-May-24 16:41

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