nrdbpro-developer Mailing List for Natural Resources Database - GIS

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https://sourceforge.net/forum/message.php?msg_id=3312254
By: nenita_tan

In nrdbpro.cpp, I believe the ff. codes are generated when you create the class.
Is IDR_MAPTYPE being referred to the dialog box or the menu bar created?  What
about the IDR_GRAPHTYPE?
<some codes here>
CMultiDocTemplate(
		IDR_MAPTYPE,
	RUNTIME_CLASSCDocMap),
	RUNTIME_CLASS(CFrameMap), // custom MDI child frame
	RUNTIME_CLASS(CViewMap));
	AddDocTemplate(pDocTemplate);

   // Register the template

	pDocTemplate = new CMultiDocTemplate(
		IDR_GRAPHTYPE,
	RUNTIME_CLASSCDocGraph), 
	RUNTIME_CLASS(CMDIChildWnd),
	RUNTIME_CLASS(CViewGraph));
	AddDocTemplate(pDocTemplate); 

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>Hi! I'm one of the persons who luckily download a source code of NRDB 
>Pro 2. I'm on the verge of studying the codes, as a beginner to Visual 
>C++. I only want to know on what part of the project can I find the 
>source code that tells me that if I click the OK button of 
>the "Welcome" splash of the software will go to the Login form?

Hi Nenita, 

There are two parts to the answer.  The first is how to close a dialog 
when its clicked on:

This is done in the dialog class (dlgabout.cpp) in response to the 
WM_LBUTTONDOWN message.  Use class wizard to create the function 
OnLButtonDown.  

This then calls to CDialog::OnOK function to close the dialog.  I've 
assigned the variable m_bSplash in the constructor so this 
functionality can be switched off when the about dialog is opened from 
the help menu.

void CDlgAbout::OnLButtonDown(UINT nFlags, CPoint point)
{
   if (m_bSplash)
   {
	OnOK();
   }
   CDialog::OnLButtonDown(nFlags, point);
}

Closing the splash panel and opening the login dialog:  

The about dialog is opened as a modal dialog.  This means that the rest 
of the program stops until it has closed.  Next the login dialog is 
opened...

// nrdbpro.cpp

BOOL CNRDBApp::InitInstance()
{
   //...

   // Display about box 

	CDlgAbout dlg(TRUE);
	dlg.DoModal();

   //...

  // Display login dialog

   if (!Login())
   {
      return FALSE;
   }

//...
}

Richard

The latest version of NRDB Pro is available to download for testing at:

http://prdownloads.sourceforge.net/nrdbpro/nrdbpro221beta.zip?download 

This version includes a view attributes function when you right-click in the map window.

It also contains bug fixes for calculating areas and installing user files.

The latest version of the setup script is now also available (CVS/install), should you wish to customise the installation.  This requires Inno Setup.

http://cvs.sourceforge.net/viewcvs.py/nrdbpro/

Richard



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For those who've tried the NRDB Web demo, you may have noticed it 
taking quite a long time to display the image (compared to a few days 
ago).

http://www.mypalawan.info/nrdb/temp/index.php

Since PHP is interpreted its pretty slow at iterative loops (for, 
while, multiple calls to imageline).  Whereas built in functions for 
handling blocks of data (like 'pack' and 'imagepolygon' are quite 
fast).  I therefore intend to optimise how the polygons are stored in 
the database such that:

- the centroid and extent may be pre-calculated and stored
- the vertices are stored as arrays of integers (rather than run length 
encoded), so that they can be extracted with single function calls
- the vertices are generalised to reduce the size of arrays (remove 
duplicate vertices that would relate to the same pixel when displayed)

At present I'm just focussing on the database functions - the current 
mapping/interface is just for testing purposes.

Richard

Dear all, 

To help with getting started on developing NRDB Web I've produced a 
prototype, which demonstrates (much to my suprise) that PHP is fast 
enough to implement web-based mapping:

http://www.mypalawan.info/nrdb/temp/test.php

I've broken down the project into a set of requirements.  I would 
appreciate feedback on this list of requirements and let me know if you 
are interested in working on any particular parts.

http://www.mypalawan.info/nrdb/temp/nrdbweb%20requirements.xls

For those who haven't done any web-based development, PHP is a simple 
to use scripting language, similar in syntax to C++.  To work on the 
development you will need to install Apache Server, PHP and MySQL (all 
available to download for free).

Please reply to this mailing list:

nrd...@li...

Regards
Richard