C / C++ / MFC Discussion Boards

Phil Outram30-Jul-12 8:41

30-Jul-12 8:41

Hi,

I need to draw a spikey 3D surface plot. It might include 300 x 500 points along the horizontal x and y axes and the height (z-axis) might be an integer between 0 and 100. I want the hight to be represented by colour banding...i.e. a point at the front of the graph with a value of 100 would be a tall bar going from green through brown through orange through to white at the top. And a value of 50 would only be a bar with green through to brown.

The most simple (and hopefully effective) solution I can think of is to draw a vertical bar for each point, rather than any triangle drawing as Excel does for it's surface plot.

My question is...how can I do this quickly? I'd do some vector maths to skip any points that don't need to be drawn (hidden bars) and merge others that sit on the same pixel, but could still have 1-2000 points to draw! So would it be possible/quicker to use a cached bitmap of a single full height bar and just copy a portion of it (depending on the z-value) onto a memory dc 2000 times or to use GDI+ and draw 2000 gradient lines/bars? I've not used GDI+ so am trying to work out which bit of darkness to stumble into and read up on!

Any thoughts/suggestions/relevant articles would be hugely appreciated.

Thanks,
Phil.

Re: Best way to draw 3d bar graph?

_Flaviu30-Jul-12 20:23

_Flaviu

30-Jul-12 20:23

A excel class control does help ? This class can programatically draw 3d charts ... if could help you, I'm glad to send it to you ... Smile | :)

Re: Best way to draw 3d bar graph?

Phil Outram30-Jul-12 23:24

Phil Outram

30-Jul-12 23:24

Hi Flaviu2,

Does the class output data to Excel and draw a surface plot within Excel? If so, thanks, but I've already implemented this as an interim measure. I actually need to do the drawing within an MFC application, so various settings can be modified and the results updated in real time.

Otherwise, if your class draws 3d charts within an MFC view, that would be awesome - yes please!

Many thanks,
Phil.

He is no fool, who gives what he cannot keep, to gain that which he cannot lose.

Re: Best way to draw 3d bar graph?

_Flaviu31-Jul-12 0:58

_Flaviu

31-Jul-12 0:58

This class could control excel graph in two way : like excel ActiveX object inside of an MFC application or, could control an excel graph in new created file, in exterior of an MFC application but with control from inside of MFC application ... if you say that could help you, I will gladly give you ... and more, I will try to make a little demo ...

Re: Best way to draw 3d bar graph?

Phil Outram31-Jul-12 3:05

Phil Outram

31-Jul-12 3:05

Ah, using Excel in as an ActiveX object is an interesting idea, so yes please, I'd love to see a little demo. Thanks!

Re: Best way to draw 3d bar graph?

_Flaviu31-Jul-12 20:20

_Flaviu

31-Jul-12 20:20

Please send me an email ...

Splitter View Problem in MFC.

Rishav Prabhakar29-Jul-12 19:15

Rishav Prabhakar

29-Jul-12 19:15

Following is the code which i wrote to implement a splitter view to join together 5 dialog. Problem is the split window at the bottom screen occupies the whole form area please help me to remove the error.

C++

BOOL CMainFrame::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext)
{
	//Create Splitter Window
	m_wndSplitter.CreateStatic(this, 2, 1);
	m_wndSplitter2.CreateStatic(&m_wndSplitter, 1, 2, WS_CHILD | WS_VISIBLE, m_wndSplitter.IdFromRowCol (0, 0));
	m_wndSplitter2.CreateView(0, 0, RUNTIME_CLASS(CFormLeft), CSize(200,100), pContext);
	m_wndSplitter1.CreateStatic(&m_wndSplitter, 1, 2, WS_CHILD | WS_VISIBLE, m_wndSplitter.IdFromRowCol (1, 0));
	m_wndSplitter1.CreateView(0, 0, RUNTIME_CLASS(CFormBottomLeft), CSize(200,100), pContext);
	m_wndSplitter1.CreateView(0, 1, RUNTIME_CLASS(CFormBottomRight), CSize(200,100), pContext);
	m_wndSplitter3.CreateStatic(&m_wndSplitter2, 2, 1, WS_CHILD | WS_VISIBLE, m_wndSplitter2.IdFromRowCol (0, 1));
	m_wndSplitter3.CreateView(0, 0, RUNTIME_CLASS(CFormRightUp), CSize(200,100), pContext);
	m_wndSplitter3.CreateView(1, 0, RUNTIME_CLASS(CFormRightBottom), CSize(200,100), pContext);
	return TRUE;
}

Re: Splitter View Problem in MFC.

«_Superman_»30-Jul-12 1:47

«_Superman_»

30-Jul-12 1:47

I believe you need to create views for all the panes that you create.
So after you create a splitter with m_wndSplitter having 2 rows, you need to create 2 views in these 2 rows before creating the next splitter with m_wndSplitter2.

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Polymorphism in C

Re: Splitter View Problem in MFC.

Software_Developer30-Jul-12 7:20

Software_Developer

30-Jul-12 7:20

Does [this] article help?

Re: Splitter View Problem in MFC.

Rishav Prabhakar5-Aug-12 19:14

Rishav Prabhakar

5-Aug-12 19:14

Yup it helped.

But actually what i did was to resize the dialog boxes after all the splitter controls were created.

How to save a CTreeCtrl structure in a file?

Le@rner29-Jul-12 19:01

Le@rner

29-Jul-12 19:01

Hi all,

i want to know how can i save my CTreeCtrl Structure in a file ,and again load same a previous from reading the save file.

thanks.

Re: How to save a CTreeCtrl structure in a file?

Richard MacCutchan29-Jul-12 21:51

Richard MacCutchan

29-Jul-12 21:51

See my answer to your other question. Alternatively you could learn about the CFile class and roll your own.

One of these days I'm going to think of a really clever signature.

Re: How to save a CTreeCtrl structure in a file?

CPallini29-Jul-12 21:56

CPallini

29-Jul-12 21:56

Again, once you have grasped the MFC serialization fundamentals (please see the link to the documentation I provided in the below thread), you'll find yourself how to serialize the CTreeCtrl object.

Veni, vidi, vici.

Re: How to save a CTreeCtrl structure in a file?

Software_Developer29-Jul-12 22:34

Software_Developer

29-Jul-12 22:34

Why file? Thats so Windows 3.11's win.ini
Do it in the registry.

But here you go.

Re: How to save a CTreeCtrl structure in a file?

CPallini30-Jul-12 0:26

CPallini

30-Jul-12 0:26

Actually serialization has (almost) nothing to do with .ini files and it still a well-alive technique (one may argue that .ini files too are still used).

Veni, vidi, vici.

Re: How to save a CTreeCtrl structure in a file?

Software_Developer30-Jul-12 1:08

Software_Developer

30-Jul-12 1:08

Again you are always right.

The Wiki page states:
Serialization is the process of converting a data structure or object state into a format that can be stored (for example, in a file or memory buffer, or transmitted across a network connection link) and "resurrected" later in the same or another computer environment.

http://en.wikipedia.org/wiki/Serialization[^]

The INI file format is an informal standard for configuration files for some platforms or software. INI files are simple text files with a basic structure composed of "sections" and "properties".

http://en.wikipedia.org/wiki/INI_file[^]

Re: How to save a CTreeCtrl structure in a file?

CPallini30-Jul-12 1:27

CPallini

30-Jul-12 1:27

TopCoder23 wrote:
Again you are always right.

May I forward your sentence to Mrs 'The Wife'?

Veni, vidi, vici.

Re: How to save a CTreeCtrl structure in a file?

Le@rner31-Jul-12 1:30

Le@rner

31-Jul-12 1:30

thanks its done from ur help...

Re: How to save a CTreeCtrl structure in a file?

C^hris L^osinger30-Jul-12 1:17

C^hris L^osinger

30-Jul-12 1:17

http://msdn.microsoft.com/en-us/library/dz8k76ze%28v=vs.71%29.aspx[^]

image processing toolkits | batch image processing

How to use serialization in mfc dialog based application?

Le@rner29-Jul-12 18:59

Le@rner

29-Jul-12 18:59

Hi all,

please guide me or help me to use serialization in my dialog based application.

thanks.

Re: How to use serialization in mfc dialog based application?

Richard MacCutchan29-Jul-12 21:50

Richard MacCutchan

29-Jul-12 21:50

You have been a member here long enough to know that questions like this can be researched quite easily by using Google and/or MSDN. For MSDN you can go directly to the CArchive class and learn how to use that.

One of these days I'm going to think of a really clever signature.

Re: How to use serialization in mfc dialog based application?

CPallini29-Jul-12 21:53

CPallini

29-Jul-12 21:53