请教关于AcDb2dPolyline中定点添加的问题？

wweien

我现在有以下程序：
AcDb2dPolyline *pLine；
AcGePoint3d startPt；
AcGePoint3d endPt;
AcGePoint3dArray vertices;
   vertices.append(startPt);
        vertices.append(endPt);
pLine->appendVertex(vertices);
以前这段程序好像可以现在却不行了，请问用appendVertex添加起点和终点不行吗？

wweien

wweien

leeyeafu

wweien

error C2664: 'enum Acad::ErrorStatus __thiscall AcDb2dPolyline::appendVertex(class AcDb2dVertex *)' : cannot convert parameter 1 from 'class AcArray<class AcGePoint3d,class AcArrayMemCopyReallocator<class AcGePoint3
d> >' to 'class AcDb2dVertex *'
        No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called。

leeyeafu

用pLine->appendVertex(); 可以添加顶点，但你的程序中参数使用不对。应该是这样：
AcGePoint3d *q = pCircle->center();
AcDb2dVertex *pVertex=new AcDb2dVertex(q);
pLine->appendVertex(pVertex);
也就是说，appendVertex()函数需要一个AcDb2dVertex类型的参数。你应该调用AcDb2dVertex类的构造函数AcDb2dVertex *pVertex=new AcDb2dVertex();来实现类型转换。

wweien

我是在做一个pline线和圆相关联。就是移动圆，pline线的起点跟着做相关移动。
line线是可以的。但是pline线就出错。（在vc下过了,但是会使autocad出现调用错误，然后cad就关了。）
所以我以为可能是指针调用错误。就想试试不用指针。
不知道有没有别的解决办法，敬请指教！

leeyeafu

wweien

leeyeafu

The following example creates a simple context reactor that responds to a variety of input context events:

#include <adslib.h>
#include <aced.h>
#include <dbmain.h>
#include <rxregsvc.h>
#include <acedinpt.h>
#include <acdocman.h>

// The input context reactor class.
class MyContextReactor : public AcEdInputContextReactor
{
public:
　　void beginGetPoint(const AcGePoint3d* pointIn,const char* promptString, int initGetFlags,const char* pKeywords);
　　void endGetPoint(Acad::PromptStatus returnStatus,const AcGePoint3d& pointOut, const char*& pKeyword);
　　void beginGetOrientation(const AcGePoint3d* pointIn,const char* promptString,int initGetFlags,const char* pKeywords);
　　void endGetOrientation(Acad::PromptStatus returnStatus,  double& angle,const char*& pKeyword);
　　void beginGetCorner(const AcGePoint3d* firstCorner,const char* promptString,int initGetFlags,const char* pKeywords);
    void endGetCorner(Acad::PromptStatus returnStatus,  AcGePoint3d& secondCorner,const char*& pKeyword);
    void beginSSGet(const char*  pPrompt,int initGetFlags,const char*  pKeywords,const char*  pSSControls,const Array<AcGePoint3d>& points,const resbuf* entMask);
    void endSSGet(Acad::PromptStatus returnStatus,const AcArray<AcDbObjectId>& ss);
};

void MyContextReactor::beginGetPoint(const AcGePoint3d* pointIn,    const char* promptString,int initGetFlags,const char* pKeywords)
{
    acutPrintf("beginGetPoint: pointIn = %.2f,%.2f,%.2f\n",
        (*pointIn)[0], (*pointIn)[1], (*pointIn)[2]);

    if (NULL != promptString)
        acutPrintf("%s", promptString);
    acutPrintf("initGetFlags: %d\n", initGetFlags);
    if (NULL != pKeywords)
        acutPrintf("Keywords: %s\n", pKeywords);
}

void MyContextReactor::endGetPoint(Acad::PromptStatus returnStatus, const AcGePoint3d& pointOut,const char*& pKeyword)
{
    acutPrintf("endGetPoint: %d\n", returnStatus);
    acutPrintf("%.2f,%.2f,%.2f\n", pointOut[0], pointOut[1],
        pointOut[2]);
    if (NULL != pKeyword)
        acutPrintf("Keyword: %s\n", pKeyword);
}

void MyContextReactor::beginGetOrientation(const AcGePoint3d* pointIn,const char* promptString, int initGetFlags,const char* pKeywords)
{
    acutPrintf("beginGetOrientation: %.2f, %.2f, %.2f\n",
        (*pointIn)[0], (*pointIn)[1], (*pointIn)[2]);
}

void MyContextReactor::endGetOrientation(Acad::PromptStatus returnStatus,double& angle,const char*& pKeyword)
{
    acutPrintf("endGetOrientation: %.2f\n", angle);
}

void MyContextReactor::beginGetCorner(const AcGePoint3d* firstCorner,const char* promptString,int initGetFlags,const char* pKeywords)
{
    if (NULL != firstCorner)
    {
        acutPrintf(
            "beginGetCorner: %.2f, %.2f, %.2f\n",
            (*firstCorner)[0],
            (*firstCorner)[1],
            (*firstCorner)[2]);
    }
}

void MyContextReactor::endGetCorner(Acad::PromptStatus returnStatus,AcGePoint3d& secondCorner,const char*& pKeyword)
{
    acutPrintf("endGetCorner\n");
}

void MyContextReactor::beginSSGet(const char*  pPrompt,  int initGetFlags,const char*  pKeywords,const char*  pSSControls,   const AcArray<AcGePoint3d>& points,const resbuf* entMask)
{
    acutPrintf("beginSSGet:%s\n", NULL != pPrompt ? pPrompt : "");
    for (int i = 0; i < points.length(); i++)
        acutPrintf("%d: %.2f, %.2f, %.2f\n", i, points[X],
        points[Y], points[Z]);
}

void MyContextReactor::endSSGet(Acad::PromptStatus returnStatus,    const AcArray<AcDbObjectId>& ss)
{
    acutPrintf("endSSGet\n");
    for (int i = 0; i < ss.length(); i++)
        acutPrintf("Entity %d: <%x>\n", i, ss.asOldId());
}

// My context reactor object
MyContextReactor my_icr;

extern "C" __declspec(dllexport) AcRx::AppRetCode
acrxEntryPoint(AcRx::AppMsgCode msg, void *p)
{
    switch (msg)
    {
    case AcRx::kInitAppMsg:
        acrxUnlockApplication(p);
        acrxRegisterAppMDIAware(p);
        break;
    case AcRx::kLoadDwgMsg:
        // Attach a context reactor to the current document.
        //
        curDoc()->inputPointManager()->
            addInputContextReactor(&my_icr);
        break;
    case AcRx::kUnloadAppMsg:
        // Warning! This sample attaches a context reactor,
        // but it never detaches it. A real-life application
        // will need to monitor to which document it attached
        // the reactor, and will need to detach it.
        //
        break;
    }
    return AcRx::kRetOK;
}