C / C++ / MFC

Standalone mfc application

21-Jul-04 17:11

Have you tried CWnd::LockWindowUpdate()? I don't know that it will help but I wonder.

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Re: CListCtrl ficker...

bryce21-Jul-04 17:27

bryce

21-Jul-04 17:27

naah i need to show the images as they arrive but wihtout the flickering Smile | :)

cheers though
Bryce

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Re: CListCtrl flicker...

wb22-Jul-04 4:11

22-Jul-04 4:11

ovveride the folowing

OnEraseBkgnd
OnPaint

in the errasbackground method you should do nothing..
and in the on Paint you should do something like this:

void CIcoListCtrl::OnPaint()
{
	CPaintDC dc(this);
	CRect r;
	GetClientRect(&r);

	CMemDC memDC(&dc,&r);

	
	Errase(&memDC);
	CWnd::DefWindowProc(WM_PAINT,(WPARAM)memDC.m_hDC,0);
	
}

I have a CustomDrawListControl with Icons and the Icons are zooming on mouseenter and mouseleave...
and it dont flicker at all!

I hope this helps..

TallAndyB21-Jul-04 14:22

TallAndyB

21-Jul-04 14:22

OK, If I have read correctly I should be able to take a single executable file from the development environment and use it on another Windows based machine if I statically link with the MFC dlls. I appreciate that this will make it a more cumbersome .exe but it keeps my customer happy. As a final check I will not need any additional dlls to permit database access since I accomplich that using the MFC CRecordset classes. Is this correct?

I currently use the standard edition of VC++ ver6 and think that I have to get the Professional edition to do this. Again before I spend the dollars am I correct?

AndyB

Re: Standalone mfc application

Michael Dunn21-Jul-04 15:03

Michael Dunn

21-Jul-04 15:03

Yes, you need the pro version to link statically with MFC.

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Re: Standalone mfc application

palbano21-Jul-04 16:58

Database Update????? Urgent

21-Jul-04 16:58

TallAndyB wrote:
I will not need any additional dlls to permit database access since I accomplich that using the MFC CRecordset classes. Is this correct?

I don't believe that will be correct. It's been a long time but you should need files for whatever database product you are using. Also CRecordset uses ODBC I believe, so all of that has to be installed.

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Multiline editbox

Spank me!!21-Jul-04 13:16

Spank me!!

21-Jul-04 13:16

Hello, I have an editbox that is in a child dialog – this child dialog is a “cancel test” type screen having a single button that when pushed cancels a long series of calculations, and a single multilane editbox that receives information from my main program and displays them in a multilane form.

Here is my problem: I can get the multilane part to work great, but I always have to scroll down to see the most recent message. For example, if I were to make an editbox that is only tall enough to print a single line, then I will always see the very first string that I sent to the editbox – I am wanting to see the most recent string, not the oldest.

I know I need to use something like pcanceldlg->LineScroll(1, 0); but I always get an error saying LineScroll' : is not a member of 'CCancelBoxDlg' If anyone can help me with how to use the LineScroll function in a child dialog I would greatly appreciate it.

If it helps any, here is the code I am using to send the strings:

pcanceldlg->GetDlgItemText(1015, s_oldprogress);<br />
  s_newprogress = s_oldprogress + "\r\n" + s_progress;<br />
  pcanceldlg->SetDlgItemText(IDC_MOVEMENTDIALOG, s_newprogress);

Thanks,

Loren

Re: Multiline editbox

Alexander Wiseman21-Jul-04 15:38

Alexander Wiseman

21-Jul-04 15:38

Hi,

LineScroll is a member of the CEdit class, not CDialog, which is why when you try to call the function using the dialog pointer, you get a syntax error. To call LineScroll, therefore, you need to have the CEdit control variable or a pointer to it. Try this instead:

<br />
CEdit *myEdit = ((CEdit*)GetDlgItem(IDC_MOVEMENTDIALOG));<br />
<br />
// You can now call LineScroll; note that the following call only scrolls the edit control 1 verical line<br />
myEdit->LineScroll(1, 0);<br />

Hope that helps!

Sincerely,
Alexander Wiseman

Est melior esse quam videri
It is better to be than to seem

Re: Multiline editbox

Harold Bamford23-Jul-04 11:05

Harold Bamford

23-Jul-04 11:05

Sounds very much like an editbox I'm using to log messages. This is how I scroll to the bottom of the editbox.

// Scroll the last line into view
int len = m_SystemStatus.GetWindowTextLength();
m_SystemStatus.SetSel(len,len,FALSE);	// scroll last line into view

Small Rat21-Jul-04 12:46

21-Jul-04 12:46

Hi,

I want to use CDatabase::ExecuteSQL to execute a update sql statement to Access database.
I use the following sql statement.

sql="update table_name set col_name=\"dd'ee\" where id=1";

(the content of col_name has a ')

it doesn't work.

Please help me solve the problem!!

thanks a lot!!

Alan

palbano21-Jul-04 16:34

21-Jul-04 16:34

Did you test the SQL statement in Access?

It looks like there might be an error in it. It appears you have an apostrophe character in the string value for the col_name field. I am not positive but i seem to remember that Access and other relational DB's do not support that character in string data.

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Small Rat21-Jul-04 16:49

21-Jul-04 16:49

Yes, I test sql statement, it works.

TaknuMone22-Jul-04 2:03

TaknuMone

22-Jul-04 2:03

Try this syntax:

strQuery = "UPDATE employees "
strQuery += "SET employee_lastname = " + m_Value;
strQuery += "WHERE employee_id = " + nEmpId;

remove those slashes

TaknUmone

Small Rat23-Jul-04 18:39

23-Jul-04 18:39

but we have use ''/"" to the char column.
because the content of the column include a ', so I change teh one pair of '' to "".

palbano22-Jul-04 5:47

22-Jul-04 5:47

alanshen209 wrote:
it doesn't work.

What does that mean? Does it throw an exception?

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Small Rat23-Jul-04 18:40