Re: OnCancel - C / C++ / MFC Discussion Boards

Re: SetItemText() Problem

Hamid_RT18-Aug-06 3:00

Hamid_RT

18-Aug-06 3:00

of course CStringArray *arr; and it seems to it has two for i,j but he writes a for Smile | :)

WhiteSky

Re: SetItemText() Problem

David Crow18-Aug-06 3:16

David Crow

18-Aug-06 3:16

kiran.pinjarla wrote:
and value of i is 1.

So you are wanting to change the second row, correct?

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

Re: SetItemText() Problem

prasad_som18-Aug-06 3:19

prasad_som

18-Aug-06 3:19

Just out of curiosity; Have you inserted any item in list control, before setting text? Or there are items present in control ?

kiran.pinjarla wrote:
for(int j =0 ;j<4;j++)

initialize j with 1 and check.

Prasad
Notifier using ATL

Re: SetItemText() Problem

Kiran Pinjala18-Aug-06 3:26

Kiran Pinjala

18-Aug-06 3:26

Ok I got it. The Problem was i did not do InsertItem before going for InsertItemText. that was the problem.
Thank You.

KIRAN PINJARLA

OnCancel

SandhyaSri18-Aug-06 1:35

SandhyaSri

18-Aug-06 1:35

Hi I have two edit controls , 1 OK button and 1 Cancel Button.The code for the first editbox's EN_KILLFOCUS event is as follows:
void CTrial1Dlg::OnKillfocusEdit1()
{
// TODO: Add your control notification handler code here
CEdit *pEdit;
CString str;
double d1;
GetDlgItemText(IDC_EDIT1,str);
if(str.CompareNoCase(_T(""))!=0)
{
d1=_tcstod(str,NULL);
if(d1 > 3)
{
AfxMessageBox(_T("Greater than 3.Enter less than 3"));
pEdit = (CEdit *)GetDlgItem(IDC_EDIT1);
pEdit->SetFocus();
}

}
}
when I enter a number greater than 3 the message is displayed.As long as I press "OK" the message will be raised.The message will be raised even if I press "OnCancel".
My requirement is when the message is displayed and if I press the "Cancel" button the dialog should end.As I am using setfocus(), how can I do this?
Thanks in advance.

Sandhya

Re: OnCancel

Cedric Moonen18-Aug-06 1:48

Cedric Moonen

18-Aug-06 1:48

Wouldn't it be better to override OnOk() and OnCancel() ? So that in OnOk() you can check if the string is correct or not. If not, don't call CDialog::OnOk() so that the dialog won't be closed (and display a warning message).

I find this solution 'better' because the user won't have a message everytime he does something in the dialog, only when he wants to click on the ok button.

Cédric Moonen
Software developer

Charting control

Re: OnCancel

SandhyaSri18-Aug-06 1:57

SandhyaSri

18-Aug-06 1:57

Thank you .

Actually I have many such edit controls where each one has a validation.So as per my requirement the data should be validated when the focus is lost from the edit box and the dialog should end when the cancel button is pressed instead of postponing the checking of validations until the ok button is pressed.

Sandhya

Re: OnCancel

Cedric Moonen18-Aug-06 2:20

Cedric Moonen

18-Aug-06 2:20

I don't know if that will work but in your KillFocus function, you can retrieve the current window that has the focus with CWnd::GetFocus. I don't know if that will be already the Cancel button, you have to try. Then, you can get the ID of the 'control' with GetDlgCtrlID. If that matches with the id of your cancel button, then leave the KillFocus function directly.

Cédric Moonen
Software developer

Charting control

Re: OnCancel

David Crow18-Aug-06 3:08

David Crow

18-Aug-06 3:08

SandhyaSri wrote:
The message will be raised even if I press "OnCancel".

Of course it will. That's because the edit control has lost focus. The code is doing exactly what it is suppose to.

A better solution is to handle the EN_CHANGE notification, and if the value in the edit control is ever greater than 3, disable the OK button. Doing validation is response to EN_KILLFOCUS is just the wrong approach.

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

winsock errors

afpr18-Aug-06 1:20

afpr

18-Aug-06 1:20

Hello, i have some errors in my programm

Can you help me?

the error is:

ETHER_TYPE_NULL' : undeclared identifier
in this line:
eh->h_proto = ETHER_TYPE_NULL;

thanks

Re: winsock errors

Rage18-Aug-06 1:27

Rage

18-Aug-06 1:27

afpr wrote:
ETHER_TYPE_NULL

You need to find the header in which this is defined, and then include it in your c file.

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

Re: winsock errors

afpr18-Aug-06 3:21

afpr

18-Aug-06 3:21

I know, but the header file must be if_ether.h or ether.h or if.h and the ETHER_TYPE_NULL don't existe in all of this files. What is the value for this constant??

thanks

Re: winsock errors

Rage18-Aug-06 3:30

Rage

18-Aug-06 3:30

I've spent a few minutes looking for it, and did not find. What kind of file uses this ?

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

Draw on Dialog

erikamania18-Aug-06 1:04

erikamania

18-Aug-06 1:04

Hi Everybody.
Please, I want to know I can draw a line on my dialog.
I really want to draw a chart on my dialog. The chart will have 2 axes (x, y).
Thanks.

Re: Draw on Dialog

Cedric Moonen18-Aug-06 1:10

Cedric Moonen

18-Aug-06 1:10

Maybe you can take a look at the article I wrote (link in my sig). This is a chart control and maybe it can do what you are looking for.

Cédric Moonen
Software developer

Charting control

Re: Draw on Dialog

Prakash Nadar18-Aug-06 1:19

Prakash Nadar

18-Aug-06 1:19

probably custom control is the way to go, if you search here in cp you will find many good tutorial on how to dothat.

-Prakash

Re: Draw on Dialog [modified]

_AnsHUMAN_ 18-Aug-06 1:35

_AnsHUMAN_

18-Aug-06 1:35

Do you know how to work with DC's
Get the dc of the dialog as
HDC hdc=::GetDC(m_hWnd);
and then use the line drawing functions to draw on the dialog through the DC
Once you are done with the dc release it.
Here's a sample code

HDC hdc=::GetDC(m_hWnd);
MoveToEx (hdc,0,0,NULL);
LineTo (hdc,100,100);
::ReleaseDC (m_hWnd,hdc);

-- modified at 7:42 Friday 18th August, 2006

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: Draw on Dialog

Hamid_RT18-Aug-06 2:46

Hamid_RT

18-Aug-06 2:46

In WM_PAINT you can use from dc for draw line
CPaintDC dc(this); dc.MoveTo dc.LineTo(...) Is your purpose?

WhiteSky

About CView problem,thank:)

rxgmoral18-Aug-06 1:03

rxgmoral

18-Aug-06 1:03

About CView problem,thank Smile | :)

<<<<<<<<<preview.h>>>>>>>
class Preview : public CView
{
public:
virtual void OnDraw(CDC* pDC);
virtual BOOL OnPreparePrinting(CPrintInfo *pInfo);
void OnPrint(CDC *pDC, CPrintInfo* pInfo);
};
<<<<<<preview.cpp>>>>>>>>>
void Preview::OnDraw(CDC* /*pDC*/)
{
}
BOOL Preview::OnPreparePrinting(CPrintInfo* pInfo)
{
return DoPreparePrinting(pInfo);
}
void Preview::OnPrint(CDC *pDC, CPrintInfo* pInfo)
{
CString str=_T("rrr");
pDC->TextOut(0,30,str);
}

<<<<<<<<<<<dialog.cpp>>>>>>>>
Preview * p=new Preview();
p->GetDC()->TextOutW(1,2,_T("rxg"));

i think add char to p;
Debug no Error,but run Error
how to add char to TextOutW function in p

sorry,My English isn't good
thank Smile | :)

Re: About CView problem,thank:)

Rage18-Aug-06 1:28

Rage

18-Aug-06 1:28

rxgmoral wrote:
but run Error

Do you mean in Release ?

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

Re: About CView problem,thank:)

David Crow18-Aug-06 3:18

David Crow

18-Aug-06 3:18

rxgmoral wrote:
sorry,My English isn't good

English aside, what's the actual problem? What are you trying to do?

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

using dll in VB(please help)

aaaan18-Aug-06 0:59

aaaan

18-Aug-06 0:59

hi I wrote a regular dll based on MFC to use it in VB.but in VB at run time when i call the exported function from that dll.the error is comming as "Bad dll calling convention".i used __stdcall in the dll and also i mantained the .def file like
EXPORTS
MyFunction @1

I do not know what is wrong with this.Please help me.its urgent.

nirmal

Re: using dll in VB(please help)

Cedric Moonen18-Aug-06 1:12

Cedric Moonen

18-Aug-06 1:12

Show the code of the function (declaration and definition) and the way you declare it in VB.

Cédric Moonen
Software developer

Charting control

How to hide the file names while in Thumbnail View ?

Amar Sutar18-Aug-06 0:40

Amar Sutar

18-Aug-06 0:40

On XP this can be done by simply holding down the Shift key when opening a folder whose view is already set to thumbnails.

Is this possible in win2000 by using MFC?

Thanks in Advance.
Amar Smile | :)

how to change the highlight color of listctrl

GANsJob18-Aug-06 0:39

GANsJob

18-Aug-06 0:39

Hi all,

Im using custom draw to change the color or the listctel item.
But i cant change the highlight color . how can i get it done.

thankx

regards
GAN

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