ObjectARX获取当前视图范围内的所有实体，用于局部选择时提前筛选
void PluginCommand::Test(){
struct resbuf sysVar;
acedGetVar(_T("SCREENSIZE"), &sysVar);
int nScreenX = (short)sysVar.resval.rpoint;
int nScreenY = (short)sysVar.resval.rpoint;
acedGetVar(_T("VIEWSIZE"), &sysVar);
double dViewSize = sysVar.resval.rreal;
acedGetVar(_T("PICKBOX"), &sysVar);
double dScale = dViewSize / nScreenY;
acutPrintf(_T("nScreenX = %d, nScreenY = %d, dViewSize = %.3f, dScale = %.3f\n"), nScreenX, nScreenY, dViewSize, dScale);
//获取view的rect
CRect viewRect;
GetClientRect(acedGetAcadDwgView()->m_hWnd, &viewRect);
//viewRect转到图纸中的点
acedDwgPoint dwgPt1, dwgPt2;
//获取视口编号
struct resbuf v;
if (acedGetVar(_T("cvport"), &v) == RTNORM)
{
int wndNum = v.resval.rint;
acedCoordFromPixelToWorld(wndNum, viewRect.TopLeft(), dwgPt1);
acedCoordFromPixelToWorld(wndNum, viewRect.BottomRight(), dwgPt2);
}
else
{
acedCoordFromPixelToWorld(viewRect.TopLeft(), dwgPt1);
acedCoordFromPixelToWorld(viewRect.BottomRight(), dwgPt2);
}
//pt1和pt2是世界坐标系下的点
AcGePoint3d ptStart = PublicFunction::TransWcs2Ucs(asPnt3d(dwgPt1));
ptStart.z = 0.0;
AcGePoint3d ptEnd = PublicFunction::TransWcs2Ucs(asPnt3d(dwgPt2));
ptEnd.z = 0.0;
ads_point p1;
ads_point_set(asDblArray(ptStart), p1);
ads_point p2;
ads_point_set(asDblArray(ptEnd), p2);
//选择该视图内的全部实体
ads_name ssname;
int ret = acedSSGet(_T("C"), p1, p2, NULL, ssname);
acedSSSetFirst(ssname, NULL);
ads_ssfree(ssname);
}
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