C / C++ / MFC

17-Feb-03 9:14

Take a look at this example.

http://www.codeproject.com/splitter/flatsplitter.asp

You can use that class or modify your own class.

Kuphryn

CDBVariant casting

Majid Shahabfar17-Feb-03 1:27

Majid Shahabfar

17-Feb-03 1:27

Hi,
I have a problem in casting CDBVariant string object.

CDBVariant name<br />
...  // connecting to database and ...<br />
recset.GetFieldValue("Name",name);<br />
CString str = name.m_pstring;<br />
// above code cannot be compiled<br />
CString str = (CString&)name.m_pstring; // run time error<br />

Thank you in advance.

Re: CDBVariant casting

Hans Ruck17-Feb-03 3:01

Hans Ruck

17-Feb-03 3:01

m_pstring is of type CString *, so

CString str = *(name.m_pstring);

should work fine if the pointer is ok.

rechi

problem in InitInstance

Gérald Mercet16-Feb-03 22:46

Gérald Mercet

16-Feb-03 22:46

Hi everybody

I don't understand why this morning when i tried to start my dialog based application, the message box has opened with the following message:

Uhandled exception in Fractal_v1_0.exe:0xC000005: Access Violation

So i've found that this problem comes from the following line of code in the function InitInstance:

m_pMainWnd=&Dlg;

The big problem is that my application used to run before, so is anybody could explain me where could this problem come?

Thanks in advance

gerald

Iain Clarke, Warrior Programmer17-Feb-03 1:39

17-Feb-03 1:39

Have you added any controls to the dialog which would cause CreateDialog to fail?
You can add "no fail create" style (in the more styles box) to your dialog and see
if any bits of it don't appear or cause your OnInitDialog / DoDataExchange functions
to die.

Good luck,

Iain.

Gérald Mercet17-Feb-03 2:27

Gérald Mercet

17-Feb-03 2:27

For your first question i answer : yes
I'm sorry, but i'm not sure to understand exactly what you mean by adding "no fail create" style how could i do that?

Iain Clarke, Warrior Programmer17-Feb-03 2:30

17-Feb-03 2:30

Open the relevant dialog in VC++.
Select the dialog itself. Press return and bring up the options box.
One of the tabs at the top of the options box says "More styles".
One if the checkboxes there says "no fail create".

This sets a style flags telling windows not to fail on CreateDialog
even if it can't create a part of the dialog box.

OK?

Iain.

Gérald Mercet17-Feb-03 3:42

Gérald Mercet

17-Feb-03 3:42

Your method works if i choose Win32 Release mode for debugging my application, but with debug mode it doesn't work anymore, why?

Iain Clarke, Warrior Programmer17-Feb-03 5:25

Network Neigbourhood feature

17-Feb-03 5:25

I don't know exactly why, but there is an obvious place to start. In debug mode, newly
allocated memory is filled with CC in each byte.

In Release, it is filled with 00 in each byte. So you may have a variable that you have
not explicitly initialised, but Release sets it to 0 / NULL. Maybe you've missed a
DDX_Control?

You'll need to put breakpoints in your dialogs constructor, OnInitDialog, etc and see
where it dies in more detail.

If you are really stuck, email me your project, and I'll have a look see.

Iain.

Unhook Windows OS

Villly16-Feb-03 22:08

Villly

16-Feb-03 22:08

How i will get to know that my Windows OS is hooked by some other application? Confused | :confused:

Can anyone help me for the same PLZ.

Thank you.

Vilas Shewale. Smile | :)

rohit.dhamija16-Feb-03 20:10

rohit.dhamija

16-Feb-03 20:10

:-OI am developing a MFC application( SDI and style is explorer.) I want the list of all the computers (systems ) if whole network ?
I need to make a similiar applicaion like "Network Neigbourhood"
ie. how to list all the n.w
Is there any feature available in VC++ for this ???

Re: Network Neigbourhood feature

Iain Clarke, Warrior Programmer17-Feb-03 1:33

17-Feb-03 1:33

I've just had a quick look, and the article
Enumeration of Computer Names and their IP address
[^]
looks like it may be what you want.

If you want to browse for a computer,
SHBrowseForFolder () with a flag of BIF_BROWSEFORCOMPUTER will
give you what you want. You can use SHGetSpecialFolderPath (CSIDL_NETWORK)
to get the PIDL of Network Neighbourhood.

Good luck,

Iain

Justifying Text

freakmaster16-Feb-03 16:56

freakmaster

16-Feb-03 16:56

I've searched the Internet and found no help on this particular subject. I need to justify my text so as both the left and right margin are aligned. I can do left align, right align and centering but unable to do justify. Can anyone please help. Thank you in advance! Confused | :confused:

Fonts in CRichEditCtrl

Jason Hooper16-Feb-03 12:51

Jason Hooper

16-Feb-03 12:51

I have a class derived from CRichEditCtrl, and am attempting to set its default font by filling CHARFORMAT's yHeight and calling CRichEditCtrl::SetDefaultCharFormat, but I can't seem to find an actual way to convert my value (which is in points) to the value it needs ("twips", apparently) to match the size of the font when used in other areas of my client screen (multiplying the pts value by ten causes it to be around the same size, but it seems bold, for example).

Can anybody pass down a little wisdom on this idea? I'm at somewhat of an impasse in that branch of my project. Thanks.

- Jason
(SonorkID 100.611)

The Code Project - Orange makes the art grow fonder

Moak16-Feb-03 13:18

Moak

16-Feb-03 13:18

how about using yHeight=points*12 and dwEffects=0 ?

Michael Dunn16-Feb-03 14:21

Michael Dunn

16-Feb-03 14:21

From the CHARFORMAT docs -

yHeight: Character height, in twips (1/1440 of an inch or 1/20 of a printer's point).

So 20 twips == 1 point.

--Mike--
The Internet is a place where absolutely nothing happens.
-- Strong Bad

1ClickPicGrabber - Grab & organize pictures from your favorite web pages, with 1 click!
My really out-of-date homepage
Sonork-100.19012 Acid_Helm

Jason Hooper16-Feb-03 15:02

Jason Hooper

16-Feb-03 15:02

I tried yours and Moak's suggestions, but the text is still in bold. Any further ideas? Thanks for helping, and especially for taking the time to go and dig that up from the MSDN.

- Jason
(SonorkID 100.611)

The Code Project - Orange makes the art grow fonder

CButton and Bitmap Interface :: MFC

Jason Hooper16-Feb-03 15:08

Jason Hooper

16-Feb-03 15:08

Nevermind, thanks.. got it Smile | :)

- Jason
(SonorkID 100.611)

The Code Project - Orange makes the art grow fonder

valikac16-Feb-03 11:47

16-Feb-03 11:47

Hi,

I have a simple button in a dialog box. I want to paint a bitmap on the button. I created the bitmap in Resource Editor. It is ready to be imported to the program.

How do you paint a bitmap to a button?

I tried SetBitmap(), but it wants an HBITMAP structure.

Thanks,
Kuphryn

Moak16-Feb-03 13:05

Moak

16-Feb-03 13:05

maybe you want to use CButtonST[^]

PJ Arends16-Feb-03 13:26

PJ Arends

16-Feb-03 13:26

use LoadImage() to load the bitmap resource.

m_hBitmap = (HBITMAP)LoadImage (AfxGetInstanceHandle(),
                                MAKEINTRESOURCE (IDB_MYBITMAP),
                                IMAGE_BITMAP,
                                0,
                                0,
                                LR_DEFAULTCOLOR);
if (m_hBitmap)
    m_MyButton.SetBitmap(m_hBitmap);

CPUA 0x5041

Sonork 100.11743 Chicken Little

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

Within you lies the power for good - Use it!

valikac16-Feb-03 14:14

16-Feb-03 14:14

Nice! Thanks.

I implemented your code. However, Window would not paint the bitmap onto the button. Maybe I did something wrong.

Kuphryn

valikac16-Feb-03 14:42