AutoCAD DevBlog

Customizing CAdUiListCtrl

By Balaji Ramamoorthy

If you are using CAdUiListCtrl and wish to customize it more, you can do it by using custom draw. This is same as customizing any other MFC controls and a nice article on customizing a CListCtrl is here :

Neat Stuff to Do in List Controls Using Custom Draw

Following the custom drawing on list control derived from CAdUiListCtrl, here is a code snippet for displaying color values.

 // MyListCtrl.h 

 #pragma  once 

 class  MyListCtrl : public  CAdUiListCtrl 

 {

 	DECLARE_DYNAMIC(MyListCtrl)

 private :

 	// Helper method 

 	CString ColorNameFromIndex(int  colorIndex);

 public :

 	MyListCtrl();

 	virtual  ~MyListCtrl();

 protected :

 	DECLARE_MESSAGE_MAP()

 	// Custom draw 

 	afx_msg void  OnCustomDraw 

 		( NMHDR* pNMHDR, LRESULT* pResult );

 };

 // MyListCtrl.cpp : implementation file 

 #include  "stdafx.h" 

 #include  "MyListCtrl.h" 

 IMPLEMENT_DYNAMIC(MyListCtrl, CAdUiListCtrl)

 MyListCtrl::MyListCtrl(){}

 MyListCtrl::~MyListCtrl(){}

 BEGIN_MESSAGE_MAP(MyListCtrl, CAdUiListCtrl)

 	ON_NOTIFY_REFLECT ( NM_CUSTOMDRAW, OnCustomDraw)

 END_MESSAGE_MAP()

 // Custom draw  

 afx_msg void  MyListCtrl::

 	OnCustomDraw ( NMHDR* pNMHDR, LRESULT* pResult)

 {

 	NMLVCUSTOMDRAW* pLVCD 

 		= reinterpret_cast <NMLVCUSTOMDRAW*>(pNMHDR);

     // Take the default processing unless we  

     // set this to something else below. 

     *pResult = CDRF_DODEFAULT;

     // First thing - check the draw stage.  

 	// If's the's prepaint 

     // stage, then tell Windows we want messages  

 	// for every item. 

     if  ( CDDS_PREPAINT 

 		== pLVCD->nmcd.dwDrawStage )

 	{

         *pResult = CDRF_NOTIFYITEMDRAW;

     }

     else  if  ( CDDS_ITEMPREPAINT 

 		== pLVCD->nmcd.dwDrawStage )

 	{

 		*pResult = CDRF_NOTIFYPOSTPAINT;

 	}

 	else  if  ( CDDS_ITEMPOSTPAINT 

 		== pLVCD->nmcd.dwDrawStage )

 	{

 		LVITEM rItem;

 		int     nItem = 

 			static_cast <int >( pLVCD->nmcd.dwItemSpec);

 		CDC*  pDC = CDC::FromHandle ( pLVCD->nmcd.hdc);

 		CRect rcIcon;

 		// RGB color treating item row as a color index 

 		long  acirgb, r,g,b;

         acirgb = acedGetRGB ( nItem );

         r = ( acirgb & 0xffL );

         g = ( acirgb & 0xff00L ) >> 8;

         b = acirgb >> 16; 

 		CBrush brush(RGB(r,g,b));

 		CRect rcItem;

 		GetSubItemRect(nItem, 1, rcItem);

 		int  w = rcItem.Width();

 		int  h = rcItem.Height();

 		CRect clrBox((int )rcItem.left + 0.1 * h, 

 					 (int )rcItem.top + 0.1 * h, 

 					 (int )rcItem.left + 0.9 * h, 

 					 (int )rcItem.top + 0.9 * h);

 		CBrush* pOldBrush = pDC->SelectObject(&brush);

 		// create and select a thick, black pen 

 		CPen penBlack;

 		penBlack.CreatePen(PS_SOLID, 1, RGB(0, 0, 0));

 		CPen* pOldPen = pDC->SelectObject(&penBlack);

 		pDC->Rectangle(clrBox);

 		pDC->TextOutW(clrBox.right + 0.1*h, 

 					(int )rcItem.top + 0.1 * h, 

 					ColorNameFromIndex(nItem));

 		// put back the old objects 

 		pDC->SelectObject(pOldBrush);

 		pDC->SelectObject(pOldPen);

 		*pResult = CDRF_DODEFAULT;

 	}

 }

 // Helper method 

 CString MyListCtrl::ColorNameFromIndex

 							(int  colorIndex)

 {

 	switch (colorIndex)

 	{

 		case  0:

 			return  _T("Black" );

 		case  1:

 			return  _T("Red" );

 		case  2:

 			return  _T("Yellow" );

 		case  3:

 			return  _T("Green" );

 		case  4:

 			return  _T("Cyan" );

 		default  :

 		{

 			CString str;

 			str.Format(_T("%d" ), colorIndex);

 			return  str;

 		}

 	}

 }

To use the List control in a dialog, insert an MFC List control and add a member variable for it. Replace the CListCtrl with the custom List control class. Here is a code snippet :

 // SampleDlg.h 

 // Member variable for the List control 

 MyListCtrl mMyList;

 // SampleDlg.cpp 

 BOOL SampleDlg::OnInitDialog()

 {

 	CDialog::OnInitDialog();

 	// Insert two columns 

 	mMyList.InsertColumn(

 		0, 

 		_T("Layer Name" ), 

 		LVCFMT_LEFT, 90);

 	mMyList.InsertColumn(

 		1, 

 		_T("Color" )

 		, LVCFMT_LEFT, 90);

 	// Contents of column-1 will be  

 	// customized at runtime 

 	// so provided as empty 

 	int  nIndex = 

 		mMyList.InsertItem(0, _T("Layer 0" ));

 	mMyList.SetItemText(nIndex, 1, _T(" " ));

 	nIndex 

 		= mMyList.InsertItem(1, _T("Layer 1" ));

 	mMyList.SetItemText(nIndex, 1, _T(" " ));

 	nIndex 

 		= mMyList.InsertItem(2, _T("Layer 2" ));

 	mMyList.SetItemText(nIndex, 1, _T(" " ));

 	nIndex 

 		= mMyList.InsertItem(3, _T("Layer 3" ));

 	mMyList.SetItemText(nIndex, 1, _T(" " ));

 	nIndex

 		= mMyList.InsertItem(4, _T("Layer 4" ));

 	mMyList.SetItemText(nIndex, 1, _T(" " ));

 	return  TRUE;  

 }

Here is the customized list control displaying color values

Autodesk Exchange Apps Hackathon – Big Success

By Virupaksha Aithal

The Autodesk Exchange Apps Hackathon – Big Success event is over. On behalf of the Autodesk Developer Network (ADN) team I’d like to say a big “thank you” to all the publishers who has registered and submitted Apps to Autodesk exchange store. We have received more than 110 Apps as part of this event till date. Till september 30th, publishers can submit the Apps as part of this event.  Visit http://adndevblog.typepad.com/autocad/2014/08/an-online-event-with-an-opportunity-to-receive-up-to-us-100-per-app-published-and-win-one-of-eight-i.html

Cancelling AcGsView::RenderToImage

By Balaji Ramamoorthy

To interrupt and cancel the AcGsView::RenderToImage call while its doing the rendering, create a custom progress monitor class. In the class derived from AcGsRenderProgressMonitor, override the OnProgress method and return true to stop the RenderToImage. AutoCAD UI may not react to mouse events when the rendering is underway. To ensure that the AutoCAD UI is responsive during the rendering and to let the user cancel the operation, pump the Windows messages from OnProgress method.

Here is a sample code snippet :

 #include  "acgsRender.h" 

 class  MyRenderProgressMonitor :

 	public  AcGsRenderProgressMonitor

 {

 public :

 	MyRenderProgressMonitor(void ){}

 	~MyRenderProgressMonitor(void ){}

 	static  Adesk::Boolean gAbortRender;

 	virtual  bool  OnProgress(Phase ePhase, 

 						float  fProgress)

 	{

 		// Pump windows message to let AutoCAD 

 		// respond to user interaction.  

 		// User may want to cancel the rendering 

 		CWinApp *app = acedGetAcadWinApp();

 		CWnd *wnd = app->GetMainWnd ();

 		MSG msg; 

 		while  (::PeekMessage (&msg, wnd->m_hWnd, 

 							0, 0, PM_NOREMOVE)) 

 		{ 

 			if  (!app->PumpMessage()) 

 			{ 

 				break ; 

 			} 

 		} 

 		LONG lIdle = 0;

 		while  (app->OnIdle (lIdle++));

 		if (gAbortRender)

 			return  true ;

 		return  false ;

 	}

 	virtual  void  OnTile(int  x, int  y, int  w, 

 				int  h, const  BYTE* pPixels)

 	{}

 	virtual  void  SetStatistics(

 		const  AcGsRenderStatistics* pStats)

 	{}

 	virtual  bool  ShouldReuseDatabase()

 						{return  false ;}

 };

 Adesk::Boolean 

 	MyRenderProgressMonitor::gAbortRender

 							= Adesk::kFalse;

To use it, create an instance of the progress monitor class and use it with RenderToImage as in this code snippet :

 // pView is an AcGsView  

 // screenRect is an AcGsDCRect 

 MyRenderProgressMonitor pm;

 AcDbMentalRayRenderSettings mentalRayRenderer;

 bool  ok = pView->RenderToImage(

 						&imgSource, 

 						&mentalRayRenderer, 

 						&pm, 

 						screenRect);

Plant 3D 2015 .NET API Training Material - Updated

By Augusto Goncalves

Now that I’m almost done preparing for Plant 3D 2015 .NET API Training in Moscow during AU Russia, here is a updated version of the training material, with slide deck and sample labs. We’ll have other API classes, see complete agenda here.

Github: https://github.com/ADN-DevTech/Plant3DTraining

If you are attending AU Russia, we’ll meet there!

Autodesk Exchange Apps Hackathon – update

By Virupaksha Aithal

Since we began the registration for Autodesk Exchange Apps Hackathon event, we received 145 registrations till date. We have received 74 Apps as part of the event. There is less than 3 days to the event. if you have not registered yet, visit Autodesk® Exchange Apps Hackathon http://exchangeapphack.com/

Discussions and presentations during the Hackathon include:

• How to architect your app for Autodesk Exchange?
• Developing cloud applications round table discussion
• Sustainability apps
• AutoCAD APIs roundtable discussion
• Advanced Exchange features – copy protection, IPN notifications, monthly subscriptions, selling web services
• Revit APIs roundtable discussion
• Max and Maya APIs round table discussion
• Inventor APIs round table discussion

for timing visit http://exchangeapphack.com/agenda/

Slide Library Manager Application

By Virupaksha Aithal

A D N senior manager Cyrille Fauvel write a Slide Library Manager Application for AutoCAD slides/slide Libraries. I thought of sharing the same with all. Please refer the github link https://github.com/ADN-DevTech/AutoCAD-Slide-Library-Manager . This Application is a utility which helps you to create, edit, and manage AutoCAD slide libraries. It can read any version of AutoCAD slides, or slide libraries. It can also read any slide format, and convert them into PNG transparent images.

The Github sample has also has a WPF Slide Control. This ‘Slide' control is a WPF control which displays slides under Windows platforms. This WPF control can be included in any WPF project using NuGet. Please refer README section the Github (https://github.com/ADN-DevTech/AutoCAD-Slide-Library-Manager/blob/master/README.md ).