ARX打印窗口内容到DWF文件

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Issue

I want to Window plot a drawing to DWF, I'm using COM to plot the DWF but how do I setup the Plot Settings so that it plots using a couple of Window coordinates?


Solution

In ObjectARX you need to use the AcDbPlotSettingsValidator class to setup the Plot. Here is some code which shows you what to do. Note this is using the Window coordinates as the extents of the drawing. This is purely for test purposes - if you want to plot the extents then use setPlotType (pLayout, AcDbPlotSettings::kExtents). There is also a Visual LISP example following the ObjectARX code.

#import "acax19ENU.tlb" no_namespace
#include "acaplmgr.h"
static void ASDKTS66871_PlotWindow_COM_testPlot(void)
{
  // Use ActiveX interface to get the application object
  IAcadApplicationPtr pAcad = acedGetAcadWinApp()->GetIDispatch(FALSE);
 
  //get the path to plotter configuration
  _bstr_t szPrinterPath;
  szPrinterPath = pAcad->Preferences->GetFiles()->GetPrinterConfigPath() + _bstr_t("\\DWF6 ePlot.pc3");
  // get the current database
  AcDbDatabase *curDocDB = acdbHostApplicationServices()->workingDatabase();
  // get a pointer to the layout manager
  AcApLayoutManager *pLayoutManager = (AcApLayoutManager *)acdbHostApplicationServices()->layoutManager();
  const ACHAR *layoutName = pLayoutManager->findActiveLayout (true);
  // get the current layout
  AcDbLayout *pLayout = pLayoutManager->findLayoutNamed (layoutName, true);
  // if we got it ok
  if (pLayout != NULL)
  {
    Acad::ErrorStatus es;
    // get the plotsetttings class
    AcDbPlotSettingsValidator *pPlotSettingsValidator = acdbHostApplicationServices()->plotSettingsValidator();
    // if we got it ok
    if (pPlotSettingsValidator != NULL)
    {
      // Refresh the layout lists in order to use it
      pPlotSettingsValidator->refreshLists (pLayout);
      // change the current layout plotter
      es = pPlotSettingsValidator->setPlotCfgName (pLayout, szPrinterPath); 
      // set the window to plot as the extents of the drawing
      es = pPlotSettingsValidator->setPlotWindowArea (pLayout,
        curDocDB->extmin ().x,
        curDocDB->extmin ().y,
        curDocDB->extmax ().x,
        curDocDB->extmax ().y);
      // set the orgin
      es = pPlotSettingsValidator->setPlotOrigin (pLayout,
        curDocDB->extmin ().x,
        curDocDB->extmin ().y);
      // set to plot centred
      es = pPlotSettingsValidator->setPlotCentered (pLayout, true);
      // setup the plot type to window
      es = pPlotSettingsValidator->setPlotType (pLayout, AcDbPlotSettings::kWindow);
      // set the scale
      es = pPlotSettingsValidator->setStdScaleType (pLayout, AcDbPlotSettings::StdScaleType::kScaleToFit);
 
      // we have to close the layout here because the last parameter of
      // findLayoutNamed is true, leave layout open
      pLayout->close ();
    }
  }
 
 
  // get the current document
  IAcadDocumentPtr pDoc = pAcad->GetActiveDocument();
  // create a plot object
  IAcadPlotPtr pPlot = pDoc->GetPlot();
  // lets plot
  pPlot->PlotToFile("c:\\test.dwf", szPrinterPath);
}

Note: You do not necessarily need to use COM to plot. Instead you can use ObjectARX functions. A good sample ships with the ObjectARX 2009 SDK. ( ..\ObjectARX 2009\samples\editor\AsdkPlotAPI )

同功能VLISP代码见：http://bbs.xdcad.net/thread-707150-1-1.html