The Automation and the Container

Start with the project you created in Implementing the Paint Automation Initializing, Creating and Freeing.

1.	Add the following declaration to the WndProc function:

static pCONTAINERHANDLE pContainer ;

2.	Add the following code to the WndProc function after the ReleaseDC statement in the ID_FILE_OPEN of the WM_COMMAND message:

{//AUTOMATION CONTAINER STUFF
   CONTAINERPAINTDATA PaintData ;

   {//REMOVE THE OLD CONTAINER (IF ANY)
      if ( SUCCESS == L_ContainerIsValid ( pContainer ) )
      {
            L_AutRemoveContainer ( pAutomation, pContainer ) ;            L_ContainerFree ( pContainer ) ;
      }

   }//REMOVE THE OLD CONTAINER (IF ANY)

   PaintData.pBitmap             = &hBitmap ;
   PaintData.hRestrictionPalette = hPalette ;

   L_ContainerInit ( &pContainer ) ;

   L_ContainerCreate ( pContainer, hWnd ) ;

   L_AutAddContainer ( pAutomation, pContainer, &PaintData ) ;

}//AUTOMATION CONTAINER STUFF

3.	Add the following code before the " L_AutFree " function call in the WndProc function in the WM_DESTROY message:

if ( SUCCESS == L_ContainerIsValid ( pContainer ) )
{
L_AutRemoveContainer ( pAutomation, pContainer ) ;

L_ContainerFree ( pContainer ) ;
}

4.	Add the following declaration to the WndProc function:

VECTORPOINT vptScalarNum, vptScalarDen ;

5.	Add the following lines before the OnSize function call in the "case WM_SIZE:" in the WndProc function:

if ( SUCCESS == L_ContainerIsValid ( pContainer ) )
{
   L_ContainerGetScalar ( pContainer, &vptScalarNum, &vptScalarDen ) ;

   nScalarNum = ( L_INT ) vptScalarNum.x ;
   nScalarDen = ( L_INT ) vptScalarDen.x ;
}

6.	Add the following container function call after the OnSize function call in the "case WM_SIZE:" in the WndProc function:

L_ContainerSetOffset ( pContainer, - rcView.left, - rcView.top, 0 ) ;

7.	Add the following container function call after the OnHScroll function call in the "case WM_HSCROLL:" in the WndProc function:

L_ContainerSetOffset ( pContainer, - rcView.left, - rcView.top, 0 ) ;

8.	Add the following container function call after the OnVScroll function call in the "case WM_VSCROLL:" in the WndProc function:

L_ContainerSetOffset ( pContainer, - rcView.left, - rcView.top, 0 ) ;

9.	Compile and run the project by selecting Build->Execute tutorial.exe from the menu.