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坐标展点原代码。请大家提出宝贵意见。便以修改！！

AcGePoint3d d3pt1;//***定位点***//
char zf<80>; //***高程***//
char layer_tc<20>;//***图层***//
double VW; //***文高***//
// This is command 'ZBZD'
void hzzcyfyzbzd()
{
CString m_path;
struct resbuf blc;
FILE *FP;
double bl;//比例
double r;
int newcolor,i,rc;
ads_point pt1;
blc.restype=RTREAL;//控制主单位值中零的显示方式
blc.resval.rreal=0;
acedSetVar("DIMZIN",&blc);
blc.restype=RTSHORT;//控制命令回显
blc.resval.rint=0;
acedSetVar("CMDECHO",&blc);
blc.restype=RTSHORT;//关闭对象捕捉
blc.resval.rint=0;
acedSetVar("OSMODE",&blc);
CFileDialog chfileDlg(TRUE,NULL,NULL,OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,"文本文件(*.TXT)|*.TXT|数据文件(*.DAT)|*.DAT|所有文件(*.*)|*.*||");
chfileDlg.m_ofn.lpstrTitle="输入文件";
if(chfileDlg.DoModal()!=IDOK)return;
m_path=chfileDlg.GetPathName();

bl=500.0;
if(acedGetReal("\n绘图比例 1:<500> ",&bl)==RTCAN)return;
for(i=1;i<4;i++){
if(i==1){
strcpy(layer_tc,"高程层");
newcolor=1;
}else if(i==2){
strcpy(layer_tc,"点号层");
newcolor=3;
}else if(i==3){
strcpy(layer_tc,"点位层");
newcolor=7;
}
AcDbLayerTable *pLayerTble;
acdbHostApplicationServices()->workingDatabase()->getSymbolTable(pLayerTble, AcDb::kForWrite);
if (!pLayerTble->has(layer_tc)){
AcDbLayerTableRecord *pLayerTblRcd=new AcDbLayerTableRecord;
pLayerTblRcd->setName(layer_tc);
AcCmColor color;
color.setColorIndex(newcolor);
pLayerTblRcd->setColor(color);
pLayerTble->add(pLayerTblRcd);
pLayerTblRcd->close();
pLayerTble->close();
} else {
pLayerTble->close();
}
}
blc.restype=RTSTR;//设置点号层为当前图层
blc.resval.rstring=layer_tc;
acedSetVar("CLAYER",&blc);
FP=fopen(m_path,"r");//以只读形式打开文件
do{ //...读原始数据...//
fscanf(FP,"%d,%lf,%lf,%lf",&i,&pt1 ,&pt1 ,&pt1 );
strcpy(zf,"gc200.dwg");//块名
VW=bl/1000;
//这里我直接调用CAD命令插入块，不使用ARX来插入块。主要是觉得麻烦！
//可以添加使用ARX插入的代码，展点一定更快！
acedCommand(RTSTR,"INSERT",
RTSTR,zf,//块文件
RT3DPOINT,pt1,//插入块的位置
RTREAL,VW,//缩放比例
RTSTR,"",
RTSTR,"",
0);
r=double(i);
acdbRToS(r,2,0,zf);
VW=bl*0.002;
d3pt1<0>=pt1 +bl*0.001;
d3pt1<1>=pt1 -VW/2.0;
strcpy(layer_tc,"点号层");
Com_Text();//展点号
r=pt1 ;
acdbRToS(r,2,2,zf);
strcpy(layer_tc,"高程层");
Com_Text();//展高程
rc=feof(FP);
}while(rc==0);
fclose(FP);//关闭文件
acedCommand(RTSTR,"ZOOM",RTSTR,"E",0);
}
//****************************************************************//
//************************ 写入文字 ************************//
//****************************************************************//
void Com_Text(){
AcDbText *ptext=new AcDbText(d3pt1,zf,0,VW,0);
ptext->setLayer(layer_tc);
AcDbBlockTable *pblocKTable;
acdbHostApplicationServices()->workingDatabase()->getSymbolTable(pblocKTable,AcDb::kForRead);
AcDbBlockTableRecord *pblocKTableRecord;
pblocKTable->getAt(ACDB_MODEL_SPACE,pblocKTableRecord,AcDb::kForWrite);
AcDbObjectId plineObjId;
pblocKTableRecord->appendAcDbEntity(plineObjId,ptext);
pblocKTable->close();
pblocKTableRecord->close();
ptext->close();
}