返回拾取矩形框的宽度,默认值为6
static void GetCursorPickRect(IN MXDRAWOCXHANDLE hOcx, OUT int& iWidth);
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参数 |
说明 |
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IN MXDRAWOCXHANDLE hOcx |
控件窗口句柄 |
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OUT int& iWidth |
返回光标拾取框的大小，光标拾取框是个矩形框，宽度等于高度 |
返回当前光标的拾取框的大小,返回的是屏幕像素大小,光标拾取框是个矩形框，宽度等于高度 例如:下面的代码是得到鼠标点取位置下的实体，点取位置的实体搜索范围是由GetCursorPickRect函数的
BOOL MxTools::FindEntAtPoint(IN McGePoint3d pt,IN struct resbuf* pFilter,
IN double dTol,OUT AcDbObjectIdArray& aryId)
{
aryId.setLogicalLength(0);
McGePoint3d pt1 = pt + dTol * (AcGeVector3d::kXAxis + AcGeVector3d::kYAxis);
McGePoint3d pt2 = pt - dTol * (AcGeVector3d::kXAxis + AcGeVector3d::kYAxis);
ads_name ss;
int result = acedSSGet(_T("_C"), asDblArray(pt1), asDblArray(pt2), pFilter, ss);
if(result != RTNORM)
{
return FALSE;
}
long sslen;
if (acedSSLength(ss, &sslen) != RTNORM)
{
acedSSFree(ss);
return FALSE;
}
for(int i = 0; i < sslen;i++)
{
ads_name ent;
acedSSName(ss, i, ent);
AcDbObjectId id;
acdbGetObjectId(id,ent);
aryId.append(id);
}
acedSSFree(ss);
return !aryId.isEmpty();
}
LRESULT CWinMsg::OnViewLButtonDblClk(UINT nFlags, McGePoint2d point)
{
CPoint ptView((int)point.x,(int)point.y);
McGePoint3d pt = MxDraw::ViewToDocCoord(m_hOcx,ptView);
double dWidth = 1.0;
double dHeight = 1.0;
int iWidth = 6;
MxDraw::GetCursorPickRect(m_hOcx,iWidth);
dWidth = MxDraw::ViewLongToDocCoord(m_hOcx,iWidth);
dHeight = dWidth;
AcDbObjectIdArray aryId;
MxTools::FindEntAtPoint(pt,NULL,dWidth / 2.0,aryId);