C / C++ / MFC

Re: CSliderCtrl [modified]

2-Jul-09 4:14

Hi all,

I have a dialog with some sliders on it. The slider are derived from CSliderCtrl.
I try to catch the LButtonDblClk message within my CSliderCtrl derived class, but the message does not arrive (Breakpoint is never hit). In the dialog the double click appears (breakpoint is hit), but only in case I click outside the slider controls. In case I click inside the slider controls nothing happens...

Any thoughts?

Regards,
jung-kreidler

led mike2-Jul-09 4:19

led mike

2-Jul-09 4:19

jung-kreidler wrote:
I try to catch the LButtonDblClk message within my CSliderCtrl derived class

How? Post the relevant code that is responsible.

Also I am not seeing any support for such a message in the documentation. Where have you seen information stating it does?

modified on Thursday, July 2, 2009 10:27 AM

jung-kreidler2-Jul-09 19:36

2-Jul-09 19:36

The WM_LBUTTONDBLCLK can be handled with the message handler:

BEGIN_MESSAGE_MAP(MSlider, CSliderCtrl)
ON_WM_LBUTTONDBLCLK()
END_MESSAGE_MAP()

void MSlider::OnLButtonDblClk(UINT nFlags, CPoint point)
{
CSliderCtrl::OnLButtonDblClk(nFlags, point);
}

...guess you have seen such piece of code already...

Chandrasekharan P2-Jul-09 19:56

Chandrasekharan P

2-Jul-09 19:56

jung-kreidler wrote:
ON_WM_LBUTTONDBLCLK()

did u manually add this or using Class Wizard?

jung-kreidler2-Jul-09 20:00

2-Jul-09 20:00

VS2008 automatic: Select class in Class View, Open Properties, Select Messages List, Add blahblah

I think it is of no relevance in what way the code has been added. The question is, why the breakpoint never gets hit in case I double click on the slider.

SandipG 2-Jul-09 21:26

SandipG

2-Jul-09 21:26

With following code i was able to get double click message in my Slider control.
I hope it works for you.

DWORD dwClssStyle = ::GetClassLong(m_slider.m_hWnd, GCL_STYLE);
dwClssStyle |= CS_DBLCLKS;
dwClssStyle = ::SetClassLong(m_slider.m_hWnd, GCL_STYLE, (LONG)dwClssStyle);

Regards,
Sandip.

jung-kreidler2-Jul-09 22:52

2-Jul-09 22:52

Yep, that's it.

Thank you.

led mike21-Jul-09 6:20

led mike

21-Jul-09 6:20

Nice!

SandipG 21-Jul-09 7:48

SandipG

21-Jul-09 7:48

Thanks

I never thought any one would follow up such old message.. Thumbs Up | :thumbsup:

Regards,
Sandip.

Re: output problem [modified]

led mike21-Jul-09 10:50

led mike

21-Jul-09 10:50

I was on vacation Big Grin | :-D

Today is my first day back on CP in almost 3 weeks.

output problem

susanne12-Jul-09 3:12

susanne1

2-Jul-09 3:12

Hallo i have the following code in a CRichEditView file:

void Test_OnDraw(CDC* pDC,TextDoc* pDoc)
{
pDC->SetTextColor (RGB (0, 0, 0)); // CDC* pDc

if (pDoc->m_carrDocOutput.GetSize ())
{
CSize sz = pDC->GetOutputTextExtent (pDoc->m_carrDocOutput.GetAt (0));

for (short i = 0; i < pDoc->m_carrDocOutput.GetSize (); i++)

pDC->TextOut (1, (sz.cy + 2) * i, pDoc->m_carrDocOutput.GetAt (i));

if (m_bAppendToEnd)
{
CPoint pt (1, __max (1, (sz.cy + 2) * (pDoc->m_carrDocOutput.GetSize () - 5)));

ScrollToPosition (pt);
}
}
}

first the Compiler does not recognize this function : ScrollToPosition (pt);

secondly when the output appears in the Output window there is no horizontal scroll bar , and when i click maximize or minimize the whole
output text disappear.How can i fix this problem ? Thanks in Advance

C^hris L^osinger2-Jul-09 3:16

C^hris L^osinger

2-Jul-09 3:16

ScrollToPosition is a member of CScrollView. is Test_OnDraw a member of a class that is derived from CScrollView ?

(edit: also of CCtrlView)

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modified on Thursday, July 2, 2009 9:28 AM

Re: output problem

susanne12-Jul-09 3:24

susanne1

2-Jul-09 3:24

no it is a member of class derived from CRichEditView.

I have also a problem intializing the CDC* pDc outside the Class that derived frm CRichEditView.

inside class Test_view::CRichEditView pDC will be intialized for the OnDraw fuction but i need to

intialize CDC* pDC in the Test_Doc:: CRichEditDocument.

Re: output problem

Chandrasekharan P2-Jul-09 18:19

Chandrasekharan P

2-Jul-09 18:19

ScrollTpPosition is a member function of CSrollView. Have a look at this link [^]

Using MemoryStream() in c++ program

MrKBA2-Jul-09 3:06

MrKBA

2-Jul-09 3:06

Hello,

I'm trying to create a dll with C++ and creating an object MemoryStream.
So i write
MemoryStream *memStreamEncryptedData = new MemoryStream();

I included <strstream> But it not work and i have a error message like this :

Error 1 error C2065: 'MemoryStream' : undeclared identifier
Error 2 error C2146: syntax error : missing ';' before identifier 'memStreamEncryptedData'
Error 3 error C2065: 'memStreamEncryptedData' : undeclared identifier
Error 4 error C2061: syntax error : identifier 'MemoryStream'

Please help me.

Re: Using MemoryStream() in c++ program

C^hris L^osinger2-Jul-09 3:15

C^hris L^osinger

2-Jul-09 3:15

MemoryStream is a .Net class, right?

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Re: Using MemoryStream() in c++ program

MrKBA2-Jul-09 3:32

MrKBA

2-Jul-09 3:32

Yes it is a .Net class and i'm trying to work with it but no success Confused | :confused:

Re: Using MemoryStream() in c++ program

C^hris L^osinger2-Jul-09 3:36

C^hris L^osinger

2-Jul-09 3:36

you will probably get better help if you ask in the Managed C++ forum[^].

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WT tolkit

Olorin58002-Jul-09 3:04

Olorin5800

2-Jul-09 3:04

Hello i would like to know if any of you are using or have used the c++ web toolkit http://www.webtoolkit.eu/wt[^] and what are your opininons in regard to performance , security , flexibility and usability compared to other tehnologies or frameworks (php javascript asp cakephp jquery etc)

Thanks.

How to get the real time weather info

Rajesh_Parameswaran2-Jul-09 2:13

Rajesh_Parameswaran

2-Jul-09 2:13

Hi there,

I'm looking to get the real time weather of a particular city, when the pincode for the same has been provided.

Is there any way in VC++ 6.0 or any Internet API which I can use to get the same?

Kindly share your comments on this.

Thanks in Advance,
Rajesh

Stuart Dootson2-Jul-09 2:18

Stuart Dootson

2-Jul-09 2:18

Look at WinInet[^] - that's a good starting point for HTML/HTTP interfacing. If the web-service you're going to use is written using SOAP, then gSOAP[^] may be more appropriate.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

David Crow2-Jul-09 4:59

David Crow

2-Jul-09 4:59

Where are you wanting to get this information from? To my knowledge, there is not a central location like there is with getting the current time.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Rajesh_Parameswaran2-Jul-09 7:12

Rajesh_Parameswaran

2-Jul-09 7:12

Hi David,

I've seen a gadget called 'Weather 1.0.0' which comes with Windows Vista - Side Bar. I hope the same can be done using VC++. But I've no clues on how to start with.

This needs an internet connection to be active to update the weather information.

If someone can provide some pointers on this, will help me in proceeding further to achieve the same.

Thanks in Advance,
Rajesh