各位好: 我試寫一個dll的檔案,可是解構時會出現 Project Project1.exe raised exception class EInvalidPointer with message 'Invalid pointer operation'. 請問是出了什麼問題?    .h    #ifndef __ImageBase_h__ #define __ImageBase_h__ //--------------------------------------------------------------------------- #include  #include //--------------------------------------------------------------------------- #define IMAGEBASE_API __declspec(dllexport) /* #ifdef IMAGEBASE_EXPORTS #define IMAGEBASE_API __declspec(dllexport) #else #define IMAGEBASE_API __declspec(dllimport) #endif */ //--------------------------------------------------------------------------- IMAGEBASE_API class ImageBase { private: TMemoryStream *ImageStream; public: __stdcall ImageBase(); __stdcall ~ImageBase(); Graphics::TBitmap *Image; }; //--------------------------------------------------------------------------- #endif .cpp //--------------------------------------------------------------------------- #include #include "ImageBase.h" #include "TZLIB.h" //--------------------------------------------------------------------------- #pragma argsused BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fwdreason, LPVOID lpvReserved) { return 1; } //--------------------------------------------------------------------------- __stdcall ImageBase::ImageBase() { this->ImageStream=new TMemoryStream(); this->Image=new Graphics::TBitmap(); this->Flag=0; } //--------------------------------------------------------------------------- __stdcall ImageBase::~ImageBase() { // delete ImageStream; // delete Image; } //---------------------------------------------------------------------------