如果用vc读取dxf的属性数据（有尝）

alanlus

如果用vc读取dxf的属性数据（有尝）
急！
QQ 16976004
MSN alan_lus@hotmail.com

huangyhg

通过检索“printdxf”得到一份帮助代码:


void getlast()
{
    struct resbuf *ebuf, *eb;
    ads_name ent1;

    acdbEntLast(ent1);
    ebuf = acdbEntGet(ent1);

    eb = ebuf;

    acutPrintf("\nResults of entgetting last entity\n");

// Print items in the list.
    for (eb = ebuf; eb != NULL; eb = eb->rbnext)
        printdxf(eb);          //printdxf此函数没有类型定义？？？？报错一

// Release the acdbEntGet() list.
    acutRelRb(ebuf);
}

int printdxf(eb)
struct resbuf *eb;      //这句就更不清楚是怎么回事了？又是int，又是struct

                               //而且一个指针*eb没有赋值
   
{
    int rt;

    if (eb == NULL)
        return RTNONE;

    if ((eb->restype >= 0) && (eb->restype <= 9))
        rt = RTSTR ;
    else if ((eb->restype >= 10) && (eb->restype <= 19))
        rt = RT3DPOINT;
    else if ((eb->restype >= 38) && (eb->restype <= 59))
        rt = RTREAL ;
    else if ((eb->restype >= 60) && (eb->restype <= 79))
        rt = RTSHORT ;
    else if ((eb->restype >= 210) && (eb->restype <= 239))
        rt = RT3DPOINT ;
    else if (eb->restype < 0)
// Entity name (or other sentinel)
        rt = eb->restype;
    else
        rt = RTNONE;

    switch (rt) {

    case RTSHORT:
        acutPrintf("(%d . %d)\n", eb->restype,
            eb->resval.rint);
        break;

    case RTREAL:
        acutPrintf("(%d . %0.3f)\n", eb->restype,
            eb->resval.rreal);
        break;

    case RTSTR:
        acutPrintf("(%d . \"%s\")\n", eb->restype,
            eb->resval.rstring);
        break;

    case RT3DPOINT:
        acutPrintf("(%d . %0.3f %0.3f %0.3f)\n",
            eb->restype,
            eb->resval.rpoint[X], eb->resval.rpoint[Y],
            eb->resval.rpoint[Z]);
        break;

    case RTNONE:
        acutPrintf("(%d . Unknown type)\n", eb->restype);
        break;

    case -1:
    case -2:  
// First block entity
        acutPrintf("(%d . <Entity name: %8lx>)\n",
            eb->restype, eb->resval.rlname[0]);
    }

    return eb->restype;

huangyhg

可将帮助文件里的功能实现部分添加到你的程序当中，为何不能以函数的形式添加，
我也不知道。
void myEntityContext::onCommand(Adesk::UInt32 cmdIndex)
{
       
        struct resbuf *ebuf, *eb;
        ads_name  en;
    acdbEntLast(en);
    ebuf = acdbEntGet(en);

    eb = ebuf;

    acutPrintf("\nResults of entgetting last entity\n");

// Print items in the list.
for (eb = ebuf; eb != NULL; eb = eb->rbnext)
        {  
         int rt;
//所选实体为形位公差类型，从autocad自带的lisp编辑器中可看到相关图元参数
        /* if (eb->restype ==-1 )
                        {acutPrintf("(%d . <Entity name: %8lx>)\n",eb->restype, eb->resval.rlname[0]); }
         else if(eb->restype ==0)
                        {acutPrintf("(%d . \"%s\")\n", eb->restype,eb->resval.rstring); }
         else if(eb->restype ==330)
                        {acutPrintf("(%d . <Entity name: %8lx>)\n",eb->restype, eb->resval.rlname[0]); }
         else if(eb->restype ==5)
                        {acutPrintf("(%d . \"%s\")\n", eb->restype,eb->resval.rstring); }
         else if(eb->restype ==67)
                        {acutPrintf("(%d . %d)\n", eb->restype,eb->resval.rint); }
         //else if(eb->restype ==410)
                //        {acutPrintf("(%d . %d)\n", eb->restype,eb->resval.rint); }
         
        if ((eb->restype >= 0) && (eb->restype <= 9))
                { rt = RTSTR ;  acutPrintf("(%d . \"%s\")\n", eb->restype,eb->resval.rstring); }
    else if ((eb->restype >= 10) && (eb->restype <= 19)&&(eb->restype >= 210) && (eb->restype <= 239))
                { rt = RT3DPOINT; acutPrintf("(%d . %0.3f %0.3f %0.3f)\n",eb->restype,eb->resval.rpoint[X], eb->resval.rpoint[Y], eb->resval.rpoint[Z]); }
    else if ((eb->restype >= 38) && (eb->restype <= 59))
                {rt = RTREAL ;acutPrintf("(%d . %0.3f)\n", eb->restype,eb->resval.rreal); }
    else if ((eb->restype >= 60) && (eb->restype <= 79))
                {rt = RTSHORT ; acutPrintf("(%d . %d)\n", eb->restype,eb->resval.rint); }
    //else if ((eb->restype >= 210) && (eb->restype <= 239))
    //    rt = RT3DPOINT ;
    else if (eb->restype < 0)
// Entity name (or other sentinel)
                { rt = eb->restype;        acutPrintf("(%d . <Entity name: %8lx>)\n",eb->restype, eb->resval.rlname[0]); }
    else
                { rt = RTNONE;acutPrintf("(%d . Unknown type)\n", eb->restype);  }
}
从帮助项中提取的源代码，还有写Unknown type，不过，你按合适的判断语句和输出语句就可看到在正确的参数。

huangyhg

//再整理一下，从程序中拷出来有点乱
void myEntityContext::onCommand(Adesk::UInt32 cmdIndex)
{

struct resbuf *ebuf, *eb;
ads_name  en;
    acdbEntLast(en);
    ebuf = acdbEntGet(en);

    eb = ebuf;

    acutPrintf("\nResults of entgetting last entity\n");

// Print items in the list.
for (eb = ebuf; eb != NULL; eb = eb->rbnext)
{  
  int rt;
     if ((eb->restype >= 0) && (eb->restype <= 9))
                { rt = RTSTR ;  acutPrintf("(%d . \"%s\")\n", eb->restype,eb->resval.rstring); }

    else if ((eb->restype >= 10) && (eb->restype <= 19)&&(eb->restype >= 210) && (eb->restype <= 239))
  { rt = RT3DPOINT; acutPrintf("(%d . %0.3f %0.3f %0.3f)\n",eb->restype,eb->resval.rpoint[X], eb->resval.rpoint[Y], eb->resval.rpoint[Z]); }
    else if ((eb->restype >= 38) && (eb->restype <= 59))
  {rt = RTREAL ;acutPrintf("(%d . %0.3f)\n", eb->restype,eb->resval.rreal); }
    else if ((eb->restype >= 60) && (eb->restype <= 79))
  {rt = RTSHORT ; acutPrintf("(%d . %d)\n", eb->restype,eb->resval.rint); }
    else if (eb->restype < 0)
// Entity name (or other sentinel)
  { rt = eb->restype; acutPrintf("(%d . <Entity name: %8lx>)\n",eb->restype, eb->resval.rlname[0]); }
    else
  { rt = RTNONE;acutPrintf("(%d . Unknown type)\n", eb->restype);  }
}
}
呵呵，用紫光老死机，而这个又没有tab键，那就这样了

alanlus

您的程序不是在vc里吧？
我是要脱离cad的环境
我已经基本搞定了
谢谢您
QQ 16976440
msn alan_lus@hotmail.com