[求助]还是创建图层的问题

ship120 发表于 2009-2-20 20:43:00

我在编写创建图层时遇到了一个匪夷所思的问题，和大家分享一下，希望能有高手帮忙解决！另外我初学ARX  希望大家多指点！这是我编写的创建图层的函数，放在自己添加的 CCreateEnt  类中 AcDbObjectId CCreateEnt::CreatLayer (char layername,int nNewColor,           int Weight,char linetype) {  // 获得当前图形的层表  AcDbLayerTable *pLayerTbl;  acdbHostApplicationServices()->workingDatabase()   ->getLayerTable(pLayerTbl, AcDb::kForWrite);    // 创建新的层表记录  AcDbObjectId layerTblRcdId;  AcDbLayerTableRecord *pLayerTblRcd;  pLayerTblRcd = new AcDbLayerTableRecord(); pLayerTblRcd->setName(layername);  AcCmColor color;  color.setColorIndex(nNewColor);  pLayerTblRcd->setColor(color);  AcDb::LineWeight lineWeight =(AcDb::LineWeight)Weight;  pLayerTblRcd->setLineWeight(lineWeight); AcDbLinetypeTable *pLinetypeTbl;  acdbHostApplicationServices()->workingDatabase()   ->getLinetypeTable(pLinetypeTbl, AcDb::kForWrite);  AcDbObjectId linetypeId;  pLinetypeTbl->getAt(linetype, linetypeId);  pLayerTblRcd->setLinetypeObjectId(linetypeId);  pLinetypeTbl->close();   // 将新建的层表记录添加到层表中  pLayerTbl->add(layerTblRcdId, pLayerTblRcd); pLayerTbl->close();  pLayerTblRcd->close(); return layerTblRcdId; }以下是我在acrxEnryPoint  中调用的函数：static void ShipMyrun(void)  {    // Add your code for command ShipMy.run here   char name1[]="中心线";   char name2[]="虚线";   char name3[]="粗实线";   char linetype1[]="CENTER";   char linetype2[]="DASHED";   char linetype3[]="Continuous";  AcDbLayerTable *pLayerTbl;   AcDbObjectId layerTblRcdId;   acdbHostApplicationServices()->workingDatabase()   ->getLayerTable(pLayerTbl, AcDb::kForRead);   if  ((pLayerTbl->getAt(name1,layerTblRcdId))!=Acad::eOk)    {   CCreateEnt::CreatLayer(name1,1,0,linetype1);    }else{   acutPrintf("\n图层以创建！");}  if ((pLayerTbl->getAt(name2,layerTblRcdId))!=Acad::eOk)   {   CCreateEnt::CreatLayer(name2,50,0,linetype2);   }else{   acutPrintf("\n图层以创建！");}  if ((pLayerTbl->getAt(name3,layerTblRcdId))!=Acad::eOk)   {   CCreateEnt::CreatLayer(name3,100,30,linetype3);   }else{   acutPrintf("\n图层以创建！");}  acutPrintf("\n创建图层任务已完成！");   pLayerTbl->close();  }编译没有问题，但在CAD中无法运行，导致CAD致命错误。而且我试过了：static void ShipMyrun(void)  {    // Add your code for command ShipMy.run here   char name1[]="中心线";   char name2[]="虚线";   char name3[]="粗实线";   char linetype1[]="CENTER";   char linetype2[]="DASHED";   char linetype3[]="Continuous";  //AcDbLayerTable *pLayerTbl;   //AcDbObjectId layerTblRcdId;   //acdbHostApplicationServices()->workingDatabase()   //->getLayerTable(pLayerTbl, AcDb::kForRead);   //if  ((pLayerTbl->getAt(name1,layerTblRcdId))!=Acad::eOk)    //{   CCreateEnt::CreatLayer(name1,1,0,linetype1);    //}else{   //acutPrintf("\n图层以创建！");}  //if ((pLayerTbl->getAt(name2,layerTblRcdId))!=Acad::eOk)   //{   CCreateEnt::CreatLayer(name2,50,0,linetype2);   //}else{   //acutPrintf("\n图层以创建！");}  //if ((pLayerTbl->getAt(name3,layerTblRcdId))!=Acad::eOk)   //{   CCreateEnt::CreatLayer(name3,100,30,linetype3);   //}else{   //acutPrintf("\n图层以创建！");}  //acutPrintf("\n创建图层任务已完成！");   //pLayerTbl->close();  }注释掉判断语句后却可以正确执行，另外我也试过注释掉创建图层的函数加一条输出字符函数，也运行成功了，这使我我感到匪夷所思，请哪位高手指点一下！ static void ShipMyrun(void)  {    // Add your code for command ShipMy.run here   char name1[]="中心线";   char name2[]="虚线";   char name3[]="粗实线";   char linetype1[]="CENTER";   char linetype2[]="DASHED";   char linetype3[]="Continuous";  AcDbLayerTable *pLayerTbl;   AcDbObjectId layerTblRcdId;   acdbHostApplicationServices()->workingDatabase()   ->getLayerTable(pLayerTbl, AcDb::kForRead);   if  ((pLayerTbl->getAt(name1,layerTblRcdId))!=Acad::eOk)    {   //CCreateEnt::CreatLayer(name1,1,0,linetype1);    acutPrintf("\n图层以创建！");  }else{   acutPrintf("\n图层以创建！");}  if ((pLayerTbl->getAt(name2,layerTblRcdId))!=Acad::eOk)   {   //CCreateEnt::CreatLayer(name2,50,0,linetype2);    acutPrintf("\n图层以创建！");   }else{   acutPrintf("\n图层以创建！");}  if ((pLayerTbl->getAt(name3,layerTblRcdId))!=Acad::eOk)   {   //CCreateEnt::CreatLayer(name3,100,30,linetype3);    acutPrintf("\n图层以创建！");   }else{   acutPrintf("\n图层以创建！");}  acutPrintf("\n创建图层任务已完成！");   pLayerTbl->close();  }

easypower 发表于 2009-2-20 21:31:00

你在CreatLayer函数中acdbHostApplicationServices()->workingDatabase()   ->getLayerTable(pLayerTbl, AcDb::kForWrite); 而在你外面调用acdbHostApplicationServices()->workingDatabase()   ->getLayerTable(pLayerTbl, AcDb::kForRead);当然要崩溃！你创建之间的判断可以放到函数里面去判断

ship120 发表于 2009-2-20 22:05:00

嗯  我按你说的把判断放在 CreateLayer 里面了AcDbObjectId CCreateEnt::CreatLayer (char layername,int nNewColor,           int Weight,char linetype) { // 获得当前图形的层表  AcDbLayerTable *pLayerTbl;   AcDbObjectId layerTblRcdId;  acdbHostApplicationServices()->workingDatabase()   ->getLayerTable(pLayerTbl, AcDb::kForWrite);  if  ((pLayerTbl->getAt(layername,layerTblRcdId))!=Acad::eOk)   {    // 创建新的层表记录   AcDbObjectId layerTblRcdId;   AcDbLayerTableRecord *pLayerTblRcd;   pLayerTblRcd = new AcDbLayerTableRecord();  pLayerTblRcd->setName(layername);   AcCmColor color;   color.setColorIndex(nNewColor);   pLayerTblRcd->setColor(color);   AcDb::LineWeight lineWeight =(AcDb::LineWeight)Weight;   pLayerTblRcd->setLineWeight(lineWeight);  AcDbLinetypeTable *pLinetypeTbl;   acdbHostApplicationServices()->workingDatabase()   ->getLinetypeTable(pLinetypeTbl, AcDb::kForWrite);   AcDbObjectId linetypeId;   pLinetypeTbl->getAt(linetype, linetypeId);   pLayerTblRcd->setLinetypeObjectId(linetypeId);   pLinetypeTbl->close();    // 将新建的层表记录添加到层表中     pLayerTbl->add(layerTblRcdId, pLayerTblRcd);  pLayerTbl->close();   pLayerTblRcd->close();   acutPrintf("\n图层创建成功！");  return layerTblRcdId;   }else{   acutPrintf("\n图层以创建！");} }但编译时有这么个警告  warning C4715: “CCreateEnt::CreatLayer” : 不是所有的控件路径都返回值。会对程序造成影响么？

ship120 发表于 2009-2-20 22:33:00

嗯  这次彻底解决了谢谢！AcDbObjectId CCreateEnt::CreatLayer (char layername,int nNewColor,           int Weight,char linetype) { // 获得当前图形的层表  AcDbLayerTable *pLayerTbl;   AcDbObjectId layerTblRcdId;  acdbHostApplicationServices()->workingDatabase()   ->getLayerTable(pLayerTbl, AcDb::kForWrite);  if  ((pLayerTbl->getAt(layername,layerTblRcdId))!=Acad::eOk)   {    // 创建新的层表记录   AcDbObjectId layerTblRcdId;   AcDbLayerTableRecord *pLayerTblRcd;   pLayerTblRcd = new AcDbLayerTableRecord();  pLayerTblRcd->setName(layername);   AcCmColor color;   color.setColorIndex(nNewColor);   pLayerTblRcd->setColor(color);   AcDb::LineWeight lineWeight =(AcDb::LineWeight)Weight;   pLayerTblRcd->setLineWeight(lineWeight);  AcDbLinetypeTable *pLinetypeTbl;   acdbHostApplicationServices()->workingDatabase()   ->getLinetypeTable(pLinetypeTbl, AcDb::kForWrite);   AcDbObjectId linetypeId;   pLinetypeTbl->getAt(linetype, linetypeId);   pLayerTblRcd->setLinetypeObjectId(linetypeId);   pLinetypeTbl->close();    // 将新建的层表记录添加到层表中     pLayerTbl->add(layerTblRcdId, pLayerTblRcd);  pLayerTbl->close();   pLayerTblRcd->close();   acutPrintf("\n [%s层] 创建成功！",layername);  return layerTblRcdId;   }else{    AcDbObjectId layerTblRcdId;    pLayerTbl->getAt(layername,layerTblRcdId);    return  layerTblRcdId;    acutPrintf("\n [%s层] 以创建！",layername);   } }生成：1 已成功, 0 已失败, 0 已跳过

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[求助]还是创建图层的问题