How to remove horizontal scrollar in a multiline edit control ? - C / C++ / MFC Discussion Boards

<marquee>Mourad DEBBAH<marquee>19-Sep-04 1:54

Mourad DEBBAH

19-Sep-04 1:54

Hi,

I am using ClistCtrl in my project, I use a large icon (100 x 100) pixel,
I want to draw a text on the icon.

Can any one give me a manner to do this.

Thanks in advance.

Selection State in Listcontrol

Neelesh K J Jain19-Sep-04 0:55

Neelesh K J Jain

19-Sep-04 0:55

Hello friends,
Whenever we Click an Image present in the ListControl, the image will be shown as selected by selecting the whole image and displaying in some color. But I want to display on Border to be displayed whenever I click the image. Somewhat like the ThumbNail View in the Windows Explorer. there if we selected any directory then only the directory will be focused by displaying the border in blue color.

Thank you,
Bye

Create a MDI app without child Frame Window on start Up

ic@19-Sep-04 0:40

ic@

19-Sep-04 0:40

I want to create MDI app which is going to start with dialog, not with child frame on start up. If I use the Wizard to create the MDI app, and start the application, I get the child window opened on start up and I don't know how to remove it.
I want to go to the File menu, chose New option and start the dialog, not the child window.

Help me please!!!!!!!!!!!!!!!!!!!1

Thanks in advance!!!!!!!!!!!! Frown | :-(

Re: Create a MDI app without child Frame Window on start Up

ensger23-Sep-04 4:56

ensger

23-Sep-04 4:56

Try

cmdInfo.m_nShellCommand = CommandLineInfo::FileNothing;

after

ParseCommandLine(cmdInfo);

within the InitInstance()

MfG

Gérard

Re: Create a MDI app without child Frame Window on start Up

Anonymous23-Sep-04 9:00

Anonymous

23-Sep-04 9:00

Thanks for answer.

I'll try it, and I'll see if it works.

Thanks again!!!!

CRecordset::Edit() (mfc)

010011011019-Sep-04 0:32

0100110110

19-Sep-04 0:32

Hi Guys,

i've derived a class from CRecordset like so

=========================
class myrec : public CRecordset{
myrec():CRecordset(&MyDatabase){/*do stuff etc*/}
============================

lets say I have a member function called AddCustomer(); //yes i know Smile | :)

the function needs to call CRecordset::AddNew() or CRecordset::Edit() (inherited from CRecordset) like this:

===========================================
BOOL myrec::AddCustomer(Customer & xr_Cust){

//for clarity

if(CanAppend()&&IsOpen()){
TRY{
AddNew(); //on some systems folowed by Requery()
this->Number = xr_Cust.Number();
this->Name = xr_Cust.Name();
etc etc

=========================================

BOOL myrec::EditCustomer(Customer & xr_Cust){

if(CanUpdate()&&IsOpen()){
TRY{

//put curser at right record, then:

Edit();
this->Number = xr_Cust.Number();
this->Name = xr_Cust.Name();
etc etc
==========================================

in all the examples i've seen are like this:
CRecordset x(CDatabase * bla_bla);
x.AddNew(); //or .Edit()
x.field_in_database = "hello";

i'm not sure how it does this since x does not have a member field_in_database, the database does!
so how are we accessing it using the dot operator? (no it's not overridden, i think);

and even if it did work in their examples it certainly does not in my derived class when i try this:
==============================================
this->Number = xr_Cust.Number();
==============================================

it simply tells me that "Number" is not a member of CRecordset or my derived class (and quite rightly so!)
so if anyone can tell me how to use Edit || AddNew in functions of a derived class please post or e-mail me at:
psycode@webmail.co.za;

please please please!!!!
Smile | :)

Consistency is the last refuge of the unimaginative.
Oscar Wilde

Re: CRecordset::Edit() (mfc)

Manfred Staiger20-Sep-04 2:00

Manfred Staiger

20-Sep-04 2:00

Hello 0100110110,
when you derive a class from CRecordset (or CDaoRecordset) using the Class Wizard it automatically implements the so called DFX mechanism for the exchange of field data between the database table and your recordset class. For each field of the record on the data source the DFX mechanism creates a member variable in the recordset class. I think thats what you are searching for.

Hope this helps

MS

How to remove horizontal scrollar in a multiline edit control ?

Member 20081719-Sep-04 0:27

Member 200817

19-Sep-04 0:27

Hi,

In my application, I've got a multiline edit control, and I would like to be able to dynamically remove/add the horizontal scrollbar. I tried by simply changing the style:

SetWindowLong(hLog, GWL_STYLE, GetWindowLong(hLog, GWL_STYLE) & ~WS_HSCROLL);

Unfortunately, the scrollbar disappears but the space it was using is still there (looks like a disabled area). I've tried to call RedrawWindow() but that doesn't work.
I would just like the edit control to looks like it was created without the horizontal scrollbar.
Any idea?

Re: How to remove horizontal scrollar in a multiline edit control ?

Member 20081719-Sep-04 1:55

Member 200817

19-Sep-04 1:55

I just discover the ShowScrollBar(), it does just what I want Smile | :)

Convert CString to TCHAR

RedDragon2k19-Sep-04 0:01

RedDragon2k

19-Sep-04 0:01

Hi Everyone !
Do anyone know how i can convert a CString to a TCHAR[1024] ??
Please help !!!

MFG
RedDragon2kx

Unix and C are the ultimate computer viruses.

Visit me: www.programming.info.ms

Re: Convert CString to TCHAR

010011011019-Sep-04 0:48

0100110110

19-Sep-04 0:48

CString ?
so you are using mfc?
i am, and use CString::GetBuffer(), followed by CString::ReleaseBuffer();
obviously you have to do something useful with the array (like doing a strcpy() ) as direct changes to it will modify the CString;
also when you call ReleaseBuffer() it realloc's the internal buffer of the CString ie: your array, unless copied, points to undefined memory!

i'm sure there's an easier way, but if you need to get the proj up and running NOW, there it is.

Consistency is the last refuge of the unimaginative.
Oscar Wilde

Re: Convert CString to TCHAR

David Crow20-Sep-04 10:47

David Crow

20-Sep-04 10:47

It is unnecessary to use GetBuffer() and ReleaseBuffer() when a read-only copy of the buffer is all that's required. For example:

CString str;
TCHAR tch[1024];
strcpy(tch, str);

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Convert CString to TCHAR

Michael Dunn19-Sep-04 5:32

Michael Dunn

19-Sep-04 5:32

See The Complete Guide to C++ Strings, Part II - String Wrapper Classes[^], that article shows how to convert CString to other formats.

--Mike--
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Need Help! Using CBitmap Object

Avinash Gupta18-Sep-04 23:48

Avinash Gupta

18-Sep-04 23:48

Hi,
Can any one explain me how I can...

1)copy a bitmap(CBitmap object) into the clipboard in MFC?
And
2)load a .bmp file into a CBitmap Object?

Please help.

Re: Need Help! Using CBitmap Object

Sujan Christo20-Sep-04 2:12

Sujan Christo

20-Sep-04 2:12

Can use the following code 4 loading a bitmap
CBitmap bm;
bm.LoadBitmap(IDB_BITMAP);
CDC *pDC = GetDC();
pDC->DrawState(CPoint(70,70),CSize(216,232),bm,NULL);
pDC->ReleaseAttribDC();

SendMessage Question

hatimad18-Sep-04 20:50

hatimad

18-Sep-04 20:50

Hello All,

I am trying to make a game for assignment and need to communicate between 2 processes.

I am creating memory map and sharing memory between 2 processes....

After I copy the memory on memory map from the main process, I need to inform the child process to start reading the memory..how can i do this?

is SendMessage a proper way to do it? if yes how do i do this, I just need to find a way to send message from the main process and receive messege in the child process....

any help will be greatly appreciated

Thank you

Re: SendMessage Question

Antony M Kancidrowski19-Sep-04 8:53

Antony M Kancidrowski

19-Sep-04 8:53

Are you talking 2 different applications or 2 different threads?

For applications you need to implement some form of interprocess communication (ipc) in which there are various tried and tested methods, each with their pros and cons. I suggest you read up on these before deciding on an appropriate one.

For threads, your child thread will need to process messages. Then you should use PostThreadMessage()

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Re: SendMessage Question

hatimad19-Sep-04 13:02

hatimad

19-Sep-04 13:02

Hi,

Thanks for your reply, I am talking about 2 different applications...

for IPC i have already created memory map and i can read data from both application....but the problem is how do i inform processes when they can read data...

Re: SendMessage Question

Antony M Kancidrowski20-Sep-04 6:03

Antony M Kancidrowski

20-Sep-04 6:03

You may want to look at the WM_COPYDATA message. This would be sufficient for notification purposes.

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Re: SendMessage Question

hatimad20-Sep-04 6:41

hatimad

20-Sep-04 6:41

Thank you,

I will look into it

I appreciate your help

what is LValue error?.

NewtonOfComputers18-Sep-04 20:46

NewtonOfComputers

18-Sep-04 20:46

hello all,

what is lvalue error?. is there Rvalue error too?. if yes plz give me some explanation about these 2 error types.

Thanking u all.

ComputerNewton

Re: what is LValue error?.

Andras Zoltan19-Sep-04 3:11

Andras Zoltan

19-Sep-04 3:11

I can only assume you mean when the compiler is expecting an l-value on the left-hand side of an assignment:

i=10; is fine so long as i was not defined as a constant.

More obviously:

10=3; will give you an l-value error because 10 is not an l-value and therefore cannot be assigned to anything else.

10 is 10, and cannot be anything else! Big Grin | :-D

I hope this helps,

Zoltan

Can I group function (method) within Struct in ANSI C?

Link260018-Sep-04 19:05

Link2600

18-Sep-04 19:05

Can I group function (method) within Struct in ANSI C?
I constantly listen people talking about it. Many have
stated that it can be done.

If it can be done, is it recommended to do so?

Thanks

-----------------------------
C++ without virtual functions is not OO. Programming with classes but without dynamic binding is called "object based", but not "object oriented".

Re: Can I group function (method) within Struct in ANSI C?

Michael Dunn18-Sep-04 19:16

Michael Dunn

18-Sep-04 19:16

You can have function pointers in a struct, which creates the same syntax as C++:

int myfunc() { return 1; }
 
typedef struct Foo
{
int a;
int (*pfunc)();
} Foo;
 
Foo f;
 
f.pfunc = myfunc;
f.a = f.pfunc();  /* call thru function pointer */

--Mike--
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-- Paul Watson diagnosing hardware problems.

Re: Can I group function (method) within Struct in ANSI C?

Link260018-Sep-04 19:23

Link2600

18-Sep-04 19:23

Thanks for your reply.

I did mean function pointers within Stuct. I mean function within
Struct. Some people are stating that Object-oriented can be done
in ANSI C. I just don't think so. But I'm not really sure.
Can it be done?

-----------------------------
C++ without virtual functions is not OO. Programming with classes but without dynamic binding is called "object based", but not "object oriented".

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