<?xml encoding=”UTF-8″>By Xiaodong Liang
Issue
How can I set the paper size of a layout and change the page orientation so that it is either landscape or portrait?
Solution
You can do this using the AcDbPlotSettingsValidator class. You can obtain a pointer to a global instance of this class with the call:
<pre>AcDbPlotSettingsValidator *pPlotSettingsValidator =<br>acdbHostApplicationServices()->plotSettingsValidator();<br></pre>
To obtain a pointer to the layout you want to change, you should first obtain a pointer to the global layout manager through the call
<pre>AcApLayoutManager *pLayoutManager = (AcApLayoutManager*)<br>acdbHostApplicationServices()->layoutManager();<br></pre>
then obtain a pointer to the layout with:
<pre><br>AcDbLayout *pLayout = pLayoutManager->findLayoutNamed(_T("Name"),true);<br></pre>
To obtain a list of the available plot settings for the layout, you can call
<pre><br>pPlotSettingsValidator->refreshLists(pLayout);<br></pre>
Then simply call the appropriate set function of AbDbPlotSettingsValidator before closing your layout. The following code shows how to set a layout’s paper size to A3 Landscape.
Refer to the ObjectARX Reference Guide for a list of all the set functions provided by AcDbPlotSettingsValidator.
static void changePlotSetting()
{
Acad::ErrorStatus es;
TCHAR str[125];
TCHAR mediaName[] =
_T(“ISO_A3_(297.00_x_420.00_MM)”);
// Input layout name.
if (acedGetString(Adesk::kTrue,
_T(“Layout to change: “),
str)!=RTNORM)
return;
// Get layout nanager pointer
AcApLayoutManager *pLayoutManager =
(AcApLayoutManager*)acdbHostApplicationServices()->
layoutManager();
assert(pLayoutManager != NULL);
// Get the specific layout
AcDbLayout *pLayout =
pLayoutManager->findLayoutNamed(str,true);
if (pLayout == NULL)
return;
// Get the plot settings validator
AcDbPlotSettingsValidator
*pPlotSettingsValidator =
acdbHostApplicationServices()->
plotSettingsValidator();
assert( pPlotSettingsValidator != NULL );
// Refresh the layout lists in order to use it.
pPlotSettingsValidator->refreshLists(pLayout);
// Set the media name to ISO_A3. If fail,
//then set it to the fourth item inthe media name list
es = pPlotSettingsValidator->
setCanonicalMediaName(pLayout, mediaName);
if( es != Acad::eOk )
{
acutPrintf(
_T(“Media name %s does not exist.
Set it to the fourth item
in the media name list.n”));
AcArray<const TCHAR*> mediaList;
pPlotSettingsValidator->
canonicalMediaNameList(pLayout, mediaList);
es = pPlotSettingsValidator->
setCanonicalMediaName(pLayout,mediaList[3]);
if( es != Acad::eOk )
{
acutPrintf(_T(“Fails to set the media name
to the fourth item in themedia
name list.n”));
return;
}
}
// AcDbPlotSettings::k0degrees is considered as portrait.
// AcDbPlotSettings::k90degrees is considered as landscape.
// We set it as landscape here.
pPlotSettingsValidator->
setPlotRotation(pLayout,AcDbPlotSettings::k90degrees);
pLayout->close();
Leave a Reply