Using STL in a DLL

[Gian]

I've created a DLL from a class of mine where i use two std::vector<> members to store something. My problem is that when i insert an element on the vector, the first operation on the vector (clear it, read the first element,etc) cause an error on the heap: File: dbgheap.c Line: 1044 Expression: _CrtIsValidHeapPointer(pUserData) HEAP[Print.exe]: Invalid Address specified to RtlValidateHeap( 28d0000, 28e3bd0 ) Using the class inside the program works well. It's a problem of the STL, something to include in the DLL compiling options?

[pete mcquain]

Gian wrote: It's a problem of the STL, something to include in the DLL compiling options? It sounds more like it's a DLL-boundary issue with whatever chunk of memory you are trying to push onto the vector. Perhaps some sample code would help. -pete

[Gian]

my dll header is #ifndef LFONTRENDERER_H #define LFONTRENDERER_H //-------------------------------------------------- # define GFONT_API __declspec(dllexport) #include #include #ifdef _WIN32 #include #endif // _WIN32 #include //-------------------------------------------------- typedef unsigned int uint; typedef unsigned char byte; #define DEFAULT_HEIGHT 99999 struct LCharCoords { GLfloat left; GLfloat top; GLfloat right; GLfloat bottom; bool enabled; float widthFactor; }; struct LFont { std::string name; GLuint textureId; uint defaultHeight; uint height; float widthScale; bool italic; GLfloat angle; GLfloat r, g, b; LCharCoords chars[256]; }; struct LStringData { std::string str; uint font; // the font to be used uint height; // the height of the font GLfloat r, g, b; // the color GLfloat angle; // the rotation angle GLfloat x, y; // the position float widthScale; // width scale bool italic; // true if the font is italic }; //-------------------------------------------------- class GFONT_API LFontRenderer { public: // default constructor, initializes the object LFontRenderer(); // the destructor, automatically called by delete virtual ~LFontRenderer(); // returns the number of fonts loaded uint GetFontCount(); // returns the name of the given font, index _must_ be smaller than GetFontCount() const std::string& GetFontName(uint index); // sets the active font, this function is also available in a version that takes the index as parameter void SetActiveFont(const std::string& name); // sets the active font, this function is also available in a version that takes the name // of the font as parameter void SetActiveFont(uint index); // returns the index of the active font, throws an exception if no fonts are loaded uint GetActiveFont(); // this function loads a font from a file and adds it to the list of fonts it returns the index of // the new font. The font name paramater is a name for the font that can be used with // SetActiveFont() etc. uint LoadFont(const std::string& fontname, const std::string& filename); // removes all fonts and clears any memory allocated void Clear(); // sets the height of the current font void SetHeight(uint height); // sets the color of the active

[Gian]

in // the array of fonts std::vector m_fonts; // the strings to be rendered std::vector m_strings; the first is the template of LFont and the second of LStringData (the < and > are missing in the post)