C / C++ / MFC

19-Dec-06 22:45

baerten wrote:
this->RedrawWindow();

call the redrawfunction specifing the RDW_ALLCHILDREN flag

nave

Re: Refresh [modified]

baerten19-Dec-06 22:55

baerten

19-Dec-06 22:55

Thanks for your answer, but it resolves not the problem.

If i slide another MDIChild over the View with the "ugly" textboxes, they will be refreshed correctly.

-- modified at 5:10 Wednesday 20th December, 2006

A SetRedraw(FALSE) during the Sizing provoces this problem. Even with a SetRedraw(TRUE) at the end of
the OnSize-Method the following Invalidate() and RedrawWindow() does not refresh the entire textbox

But thanks nevertheless Wink | ;)

Re: Refresh

Mark Salsbery20-Dec-06 6:53

Mark Salsbery

20-Dec-06 6:53

Why do you need to do so many redraws at the end of a resize or move?

What happens if you don't handle WM_EXITSIZEMOVE and let the system handle it?

At the most you should need
this->Invalidate(FALSE);
this->UpdateWindow();

If the controls are children of the window being updated then they will be redrawn as well.

ToolTip is not Shown

poda19-Dec-06 21:50

19-Dec-06 21:50

I have problem in displaying the tooltip.
In the header file of the Dialog,I declare the message handler as

<br />
afx_msg BOOL ShowMyToolTips(UINT id, NMHDR* pTTTStruct, LRESULT* pResult);<br />

In the .cpp file of the Dialog,

<br />
BEGIN_MESSAGE_MAP(CSimpleToolTipDlg, CDialog)<br />
	...	<br />
	ON_NOTIFY_EX(TTN_NEEDTEXT,0,ShowMyToolTips)	<br />
END_MESSAGE_MAP()<br />

In the OnInitDialog

<br />
BOOL CSimpleToolTipDlg::OnInitDialog()<br />
{<br />
        ...<br />
	EnableToolTips(true);//This is required	<br />
	return TRUE; <br />
}<br />

Then the definition of the message handler

<br />
BOOL CSimpleToolTipDlg::ShowMyToolTips(UINT id, NMHDR* pNMHDR, LRESULT* pResult)<br />
{<br />
    TOOLTIPTEXT *pTTT = (TOOLTIPTEXT*)pNMHDR;<br />
    UINT nID = pNMHDR->idFrom;<br />
    if(pTTT->uFlags & TTF_IDISHWND)<br />
    {<br />
        // idFrom is actually the HWND of the tool<br />
        nID = ::GetDlgCtrlID((HWND)nID);<br />
        if(nID)<br />
        {<br />
            pTTT->lpszText = "I am a ToolTip";//MAKEINTRESOURCE(nID);<br />
            pTTT->hinst = AfxGetResourceHandle();<br />
            return(TRUE);<br />
        }<br />
    }<br />
    return(FALSE);<br />
}<br />

The big problem is,ShowMyToolTips() function is not called at all.
I even tried
ON_NOTIFY_EX_RANGE(TTN_NEEDTEXTA, 0, 0xFFFF, ShowMyToolTips)
ON_NOTIFY_EX_RANGE(TTN_NEEDTEXTW, 0, 0xFFFF, ShowMyToolTips)

But it also does not work.
Do any one know what's wrong.

Naveen19-Dec-06 22:35

19-Dec-06 22:35

overide the OnNotify function and inside it check for the code TTN_NEEDTEXT

nave

poda19-Dec-06 22:45

19-Dec-06 22:45

You are great man!
It works fine,if I just override OnNotify function without
adding any code in it.
If you know the reason why it does not work if OnNotify
was not overridden,let me also know that.

Thank you so much.

Naveen19-Dec-06 22:48

19-Dec-06 22:48

poda123 wrote:
I just override OnNotify

u didn't write any code inside it? Confused | :confused:

nave

poda20-Dec-06 20:35

20-Dec-06 20:35

Yes, I did not write any code in OnNotify().But it works.
Also I cannot write the code of TTN_NEEDTEXT message handler's code
in OnNotify() function because the parameters has to be given by the OS

<br />
BOOL CWFPDlg::ShowMyToolTips(UINT id, NMHDR* pNMHDR, LRESULT* pResult)<br />
{<br />
}<br />

Naveen20-Dec-06 20:41

20-Dec-06 20:41

u can d like this.

BOOL CWFPDlg::ShowMyToolTips(UINT id, NMHDR* pNMHDR, LRESULT* pResult)
{
if( pNMHDR->code == TTN_NEEDTEXT)
{
// u r code...
}
}

any way now it working na..

where r u from?

nave

poda21-Dec-06 14:45

static_cast' : cannot convert from 'class CString' to 'const char *const '

21-Dec-06 14:45

You suggested me to write the ShowMyToolTips() function code in
OnNotify() function.
Since the parameters such as NMDHR* has to be given by OS,I cannot write it
in overridden OnNotify() function.
ShowMyToolTips() function is the Message Handler for the Message TTN_NEEDTEXT.
So again why should I check like

if( pNMHDR->code == TTN_NEEDTEXT)
{
// u r code...
}

Thanks for your reply.
I am from Chennai,India.

Atul2319-Dec-06 21:34

Atul23

19-Dec-06 21:34

Hello all
I compile my application in unicode. I make all settings related to unicode, but error occure as
static_cast' : cannot convert from 'class CString' to 'const char *const '
so plz send me solution of this if anybody know.

Thanks
Atool

Atool

Re: static_cast' : cannot convert from 'class CString' to 'const char *const '

sunit519-Dec-06 21:46

sunit5

19-Dec-06 21:46

it cant convert but u can use CString GetBuffer

never say die

Re: static_cast' : cannot convert from 'class CString' to 'const char *const '

toxcct19-Dec-06 22:13

toxcct

19-Dec-06 22:13

void foo(const char*);
 
CString str = _T("hello");
foo((LPCTSTR)str);

Don't know where to start ?
Refer the Forums Guidelines and ask a friend

[VisualCalc 3.0][Flags Beginner's Guide]

Re: static_cast' : cannot convert from 'class CString' to 'const char *const '

CPallini19-Dec-06 22:17

Re: static_cast' : cannot convert from 'class CString' to 'const char *const '

19-Dec-06 22:17

I think that arose because of, when using UNICODE, the operator LPCTSTR ( ) const casts to const WCHAR * instead of const char *.
So all that you can do is

const WCHAR * pWChar = (LPCTSTR)yourString;

If you need a char pointer then you have to convert the wide-char string to the ANSI one, perhaps calling WideCharToMultiByte API (see MSDN for reference) on the obtained wchar pointer.

hope that helps.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

sunit519-Dec-06 22:41

sunit5

19-Dec-06 22:41

'static_cast' : cannot convert from 'CString' to 'wchar_t *'.Toxcct is right as i didnot see that the querier wants to convert to const char*:->

never say die

Re: static_cast' : cannot convert from 'class CString' to 'const char *const '

CPallini19-Dec-06 23:23

Re: static_cast' : cannot convert from 'class CString' to 'const char *const '

19-Dec-06 23:23

Actually I wrote 'const wchar_t *'
The code below

CString str("foo");
const wchar_t * pWStr = (LPCTSTR) str;

works fine. But then you have to convert the string if your final target is to obtain a const char * pointer.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

toxcct20-Dec-06 0:31

toxcct

20-Dec-06 0:31

CPallini wrote:
const wchar_t * pWStr = (LPCTSTR) str;

this is faulty, because you convert a string of TCHARs into a string of wchar_t.

change into this :

const wchar_t * pWStr = T2WC((LPCTSTR) str);

Don't know where to start ?
Refer the Forums Guidelines and ask a friend

[VisualCalc 3.0][Flags Beginner's Guide]

Re: static_cast' : cannot convert from 'class CString' to 'const char *const '

CPallini20-Dec-06 0:41

Re: static_cast' : cannot convert from 'class CString' to 'const char *const '

20-Dec-06 0:41

toxcct wrote:
this is faulty, because you convert a string of TCHARs into a string of wchar_t.

not if you have _UNICODE defined. Smile | :)

(and if you haven't defined it, the compiler will complain about...)

By the way T2WC does not exists on my system (Visual Studio 6) can you tell me, please, how is it defined (I'm curious about...)?

Rose | [Rose]

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

S Douglas20-Dec-06 0:51

S Douglas

20-Dec-06 0:51

Pallini, looks like you are missing the closing </font> tag in your name.

I'd love to help, but unfortunatley I have prior commitments monitoring the length of my grass. :Andrew Bleakley:

OK, I fixed it.

CPallini20-Dec-06 0:59