CAD动态提示

控件具有鼠标停在一个对象上，然后自动弹出一个提示信息窗口的功能。参考例子：samples\ie\iedemoTest.htm，点击例子上边的设置超连接按钮，然后把鼠标停在对象上两秒，就能看到效果了。自动提示事件，用户响应该事件，返回需要显示的字符串，返回的字符串支持Html格式化。

JS例子说明：

1.  增加InputPointToolTipEvent事件响应函数：

document.getElementById("MxDrawXCtrl").ImpInputPointToolTipFun = DoInputPointToolTipFun;

2.  在事件中返回需要提示的字符串：

function DoInputPointToolTipFun(ent) {
    var sHyperlinks = ent.Hyperlinks;
if(sHyperlinks.length != 0)
{
var sClassName = ent.ObjectName;
 
        var tip = "<b><ct=0x0000FF><al_c>"+sClassName+
           "</b><br><ct=0x00AA00><hr=100%></ct><br><a=\"link\">" + sHyperlinks + "</a>";
 
        mxOcx.SetEventRetString(tip);
    }
    ent = null;
    CollectGarbage();
}

McEdInputPointMonitor::MonitorInputPointToolTip方法

接口：

virtual Mcad::ErrorStatus MonitorInputPointToolTip(IN const McDbObjectIdArray& pickedEntities, IN const McGePoint3d& pickedPoint, IN CString& sNewToolTipString);

参数：

参考例子：MxDraw5.2\samples\Edit\Edit.sln中InputPointMonitor.cpp文件。代码如下：

Mcad::ErrorStatus CInputPointMonitor::MonitorInputPointToolTip(IN const McDbObjectIdArray& pickedEntities,
   IN const McGePoint3d& pickedPoint,
   IN CString& sNewToolTipString
   )
{
if(!pickedEntities.isEmpty())
{
AcDbObjectId entId = pickedEntities[0];
AcDbObjectPointer<AcDbEntity> spEnt(entId,AcDb::kForRead);
if(spEnt.openStatus() == Acad::eOk)
{
CString sClassName = spEnt->isA()->name();
 
AcDbHandle handle;
spEnt->getAcDbHandle(handle);
TCHAR szHandle[256];
handle.getIntoAsciiBuffer(szHandle);
 
CString sLayerName;
{
AcDbObjectPointer<AcDbLayerTableRecord> spLayerTableRec(spEnt->layerId(),AcDb::kForRead);
if(spLayerTableRec.openStatus() == Acad::eOk)
{
LPCTSTR pszLayerName = NULL;
spLayerTableRec->getName(pszLayerName);
sLayerName = pszLayerName;
}
}
 
sNewToolTipString.Format(_T("类名:%s,层名:%s,名柄:%s"),sClassName,sLayerName,szHandle);
}
}
return Mcad::eOk;
}

CAD动态提示

原文：https://www.cnblogs.com/yzy0224/p/11170818.html