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C^hris L^osinger14-Feb-03 9:52

14-Feb-03 9:52

is this possible? i see nothing in the MSDN about it, there's no "owner-drawn" style checkbox on the scroll bar property page, and i see no articles here or on codeguru about it.

i want a sexy little scroll bar..., not the boring old everyday ones.

-c

Be very, very careful what you put into that head, because you will never, ever get it out. --Thomas Cardinal Wolsey

Fractals

Re: owner-drawn scroll bar

Neville Franks14-Feb-03 12:41

Neville Franks

14-Feb-03 12:41

Well I'm sure I've seen OD scroll bars, but where... Have you looked on CodeGuru. Doesn't the WinXP Theme stuff let you control the look of any and every control. I don't know whether GUIgui at http://www.nopcode.com[^] mucks with scroll bars, but it is worth a look.

Neville Franks, Author of ED for Windows. www.getsoft.com
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Re: owner-drawn scroll bar

PJ Arends14-Feb-03 14:56

PJ Arends

14-Feb-03 14:56

I have seen them, but I am not sure if they were ownerdrawn scrollbars or custom controls. If I were to try this, I would take a look at the GetScrollBarInfo() (SDK or MFC links) function, it looks promising as it returns the scrollbar's coordinates, thumb size and position, and the state of the various scrollbar components. Maybe call this function in your scrollbar's WM_PAINT handler.

HTH

CPUA 0x5041

Sonork 100.11743 Chicken Little

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Re: owner-drawn scroll bar

Gary R. Wheeler16-Feb-03 5:37

Gary R. Wheeler

16-Feb-03 5:37

It's not horrible to implement your own scroll bar. Unfortunately, the example I have belongs to my employer Dead | X|

Software Zen: delete this;

simple GetBuffer ques

ns14-Feb-03 9:39

14-Feb-03 9:39

Why the GetBuffer?

str2.Format(_T("item %d: %s\r\n"), i, str.GetBuffer(0));
afxDump << str2;

Looks like just a str would be enough instead of str.GetBuffer? The (0) is also puzzling me.
Thanks

Appreciate your help,
ns

Re: simple GetBuffer ques

Joaquín M López Muñoz14-Feb-03 9:46

Joaquín M López Muñoz

14-Feb-03 9:46

%s wants a const char * (a LPCSTR, in Windows lingo), so the following should suffice:

str2.Format(_T("item %d: %s\r\n"), i, (LPCTSTR)str);

GetBuffer is IMHO overkill for two reasons:

It returns a char * when just a const char * is needed.
It requires a later call to ReleaseBuffer, which is prone to error (for lack of care by the programmer, or in the presence of exceptions).

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: simple GetBuffer ques

Tim Smith14-Feb-03 9:54

Tim Smith

14-Feb-03 9:54

I totally agree with Joaquin. I see GetBuffer abused all over the place, even by Microsoft people. WTF | :WTF:

Tim Smith

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

okay!

nss14-Feb-03 10:35

nss

14-Feb-03 10:35

thanks!

Re: simple GetBuffer ques

Gary R. Wheeler16-Feb-03 5:54

Gary R. Wheeler

16-Feb-03 5:54

Actually, you can just use str in this case, since CString includes a builtin LPCTSTR conversion operator. The only time you need GetBuffer is if you are intending to modify the string directly through a character pointer. Also, any time you use GetBuffer, you should call ReleaseBuffer.

Software Zen: delete this;

How can I print a bitmap cleary?

DanYELL14-Feb-03 9:01

DanYELL

14-Feb-03 9:01

I have a bitmap that looks like a form. How can I print
that through visual c++ so that the output looks clear?
I can make it print the bitmap and it looks pretty good,
but the text is just alittle fuzzy. Any ideas on how to
print a crisp, clear bitmap?

Please, any response any one can give me will be greatly
appreciated.

Sincerely,
Danielle (an overworked graduate student)

Re: How can I print a bitmap cleary?

C^hris L^osinger14-Feb-03 9:13

C^hris L^osinger

14-Feb-03 9:13

how are you printing it now?

Be very, very careful what you put into that head, because you will never, ever get it out. --Thomas Cardinal Wolsey

Fractals

Socket ::accept() call

Swinefeaster14-Feb-03 8:29

Swinefeaster

14-Feb-03 8:29

Hi,

I have a worker thread that calls the socket api's ::accept() function, which blocks until a client machine tries to connect to my application. How do you cancel the block? Say you want to shut down the application... Is there any timeout associated with ::accept()? I couldn't find any...

Thanks in advance!

swine

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Re: Socket ::accept() call

palbano14-Feb-03 8:33

palbano

14-Feb-03 8:33

no timeout on accept just close the socket that unblocks the accept call and returns an error well error notification then u call WSAGetLastError() to get the acutal error number

"No matter where you go, there your are..." - Buckaoo Banzi

-pete

Re: Socket ::accept() call

Swinefeaster14-Feb-03 9:23

Swinefeaster

14-Feb-03 9:23

Thanks!

Check out Aephid Photokeeper, the powerful digital
photo album solution at www.aephid.com.

CListCtrl and integral number of rows

Harold Bamford14-Feb-03 8:16

Harold Bamford

14-Feb-03 8:16

Greetings,

I am trying to do something that ought to be simple but it is eluding me.

I want to resize a CListCtrl (in Report mode) from within OnInitialUpdate() such that exactly N rows are displayed (where N is already known to be small enough to fit on the screen without needing scroll bars).

I can use GetCountPerPage() but that doesn't count partial lines and one of the things I want to eliminate is partially viewed lines.

I must be missing something elementary so a code fragment would be very nice!

Thanks.

Re: CListCtrl and integral number of rows

Chris Richardson14-Feb-03 8:28

Chris Richardson

14-Feb-03 8:28

I haven't tried it, but you can take a look at CListCtrl::ApproximateViewRect. In the event that this doesn't work, I think it should be possible just to use GetItemRect with LVSIL_BOUNDS, then take the height of the rectangle and multiply it by the number of items you have, and that will be the needed height.

Chris Richardson

C/C++ Include Finder[^]

Re: CListCtrl and integral number of rows

Harold Bamford14-Feb-03 9:01

Harold Bamford

14-Feb-03 9:01

Chris Richardson wrote:
haven't tried it, but you can take a look at CListCtrl::ApproximateViewRect. In the event that this doesn't work, I think it should be possible just to use GetItemRect with LVSIL_BOUNDS, then take the height of the rectangle and multiply it by the number of items you have, and that will be the needed height.

Actually I tried this but I must have something still basically wrong:

<... do initialization ...>
CSize sz = m_list.ApproximateViewRect();
m_list.PostMessage(WM_SIZE, sz.cx, sz.cy);

This seems to have no effect.

I think I'm having a senior moment here...

Re: CListCtrl and integral number of rows

Chris Richardson14-Feb-03 9:04

Chris Richardson

14-Feb-03 9:04

That's not the correct way to size a window. Use this instead:

m_list.SetWindowPos( NULL, 0, 0, sz.cx, sz.cy, SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOMOVE );

Chris Richardson

C/C++ Include Finder[^]

Re: CListCtrl and integral number of rows

Harold Bamford14-Feb-03 9:14

Harold Bamford

14-Feb-03 9:14

That's it!

I know about and use SetWindowPos() but I just couldn't think of it.

Thanks!

And here is my working implementation (if anybody wanted to see actual code):

/////////////////////////////////////////////////////////////////////////////////
// This assumes a REPORT-style CListCtrl.
//
// Resize the control. This works correctly only if scrolling is disabled. If
// there is scrolling, then setting to the size from ApproximateViewRect() will
// always give scroll bars showing. Which is irritating.
//
// We need to adjust the vertical size from what ApproximateViewRect() returns
// by one row minus border width
//////////////////////////////////////////////////////////////////////////////////
CSize sz = m_list.ApproximateViewRect();	// always adds room for a new row
	
CRect itRect;	// Get the height of a single row (there had better *be* a row!)
m_list.GetItemRect(0, &itRect, LVIR_BOUNDS);
	
int vOffset = itRect.Height() - 3;	// leave a little 'cuz it looks better
m_list.SetWindowPos(NULL, 0, 0, sz.cx, sz.cy - vOffset,
	SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOMOVE);

accessing the checkboxes of a treeview

nitingonsalves14-Feb-03 7:40

nitingonsalves

14-Feb-03 7:40

Hi I was wondering how to find out which nodes of the treeview (a treeview with checkboxes) have their checkboxes checked.

Thanks

Nitin

Re: accessing the checkboxes of a treeview

palbano14-Feb-03 8:34

palbano

14-Feb-03 8:34

GetItemState() ?

"No matter where you go, there your are..." - Buckaoo Banzi

-pete

Searching files for string

john john mackey14-Feb-03 7:35

john john mackey

14-Feb-03 7:35

I want to find all files that DO NOT contain my string pattern. I am looking for files that don't contain the literal "copyright". I want to search recursively a folder (or better yet, do this in my Visual SourceSafe database).

I have VC++ and Visual Studio at my disposal, but I was unsuccessful at using the Regular Expressions setting on the search tool.

Thank you.
Johnny

Re: Searching files for string

KingTermite14-Feb-03 7:51

KingTermite

14-Feb-03 7:51

If you already are getting the filenames themselves, then the hard part is done. I've not used the built in regular expressions, but I know there are public domain regular expression classes/libraries out there.

However, there is an even easier way. If you already have them available to you, can you just use strstr() and see if it passes or fails. If you are using CStrings, then I'm sure there is an equivalent method, like substring() or something of the sort.

There are only 10 types of people in this world....those that understand binary, and those that do not.

Re: Searching files for string

valikac14-Feb-03 14:26

valikac

14-Feb-03 14:26

One solution is FindFile() and FindNextFile().

Kuphryn

WinAPI and serial ports -- baud rates

KingTermite14-Feb-03 7:23

KingTermite

14-Feb-03 7:23

There was no WinAPI forum, so I thought this was the closest fit for which forum this post should be applied.

I have written some very simple (non-overlapped) windows (NT/2K) serial port drivers. The definitions to be used for baud rates have two different values, CBR_56000 and CBR_57600 (in addition to the others).

I notice that using a terminal emulator to test (Hyperterminal) set at 57600, I can connect to it fine using CBR_56000, but not CBR_57600. This seems a little bizarre.

I'd appreciate it if anyone can explain this?

There are only 10 types of people in this world....those that understand binary, and those that do not.

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