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creating common memory kir_MFC6-Jul-09 19:00 kir_MFC 6-Jul-09 19:00  how to create common memory and acheive synchronization for two applications running parallally kir_MFC Re: creating common memory Adam Roderick J6-Jul-09 19:28 Adam Roderick J 6-Jul-09 19:28  create a shared memory and with a semaphore or mutex so as to aviod dead lock. Re: creating common memory Adam Roderick J6-Jul-09 19:29 Adam Roderick J 6-Jul-09 19:29  http://msdn.microsoft.com/en-us/library/aa366551(VS.85).aspx problem in deleting dll class object.(scalar deleting destructor) Member 4048136-Jul-09 16:26 Member 404813 6-Jul-09 16:26  HI, i am having problem with converting my c++ class to dll. The problem is the following. i have a class that i want to export, there are two private variables in the class, one of them is a struct. the variables are initialized in the constructor. In my ap, i created a object of my class and then delete it. Looks pretty straight forward, however, when deleting the object i get a error message "Debug Error". If i don't initialize the variables, delete is ok. if i memset the struct variable,i get a "scaler deleting destructor" error. Anyone got any idea why the dll behaves like this? ----------------------------------------AP------------------------------------ CIPCamDll *a = new CIPCamDll(); delete a; ---------------------------------------.h-------------------------------------- #ifdef IPCAMDLL_EXPORTS #define IPCAMDLL_API __declspec(dllexport) #else #define IPCAMDLL_API __declspec(dllimport) #endif typedef struct s { int abcd; }s; class IPCAMDLL_API CIPCamDll { public: CIPCamDll(void); CIPCamDll(char* para_address); ~CIPCamDll(void); private: int session_id; s m_t; }; -------------------------------------------------------------------------------- --------------------------.cpp--------------------------------------------------- CIPCamDll::CIPCamDll() { session_id = 13; return; } CIPCamDll::CIPCamDll(char* para_address) { return; } CIPCamDll::~CIPCamDll() { return; } ------------------------------------------------.cpp------------------------------- Re: problem in deleting dll class object.(scalar deleting destructor) CPallini6-Jul-09 20:58 CPallini 6-Jul-09 20:58  Where is the memset? If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile. This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke [My articles] Re: problem in deleting dll class object.(scalar deleting destructor) Member 4048136-Jul-09 21:23 Member 404813 6-Jul-09 21:23  HI, thanks for the reply, i put the memset in the constructor. i am guessing that it has something do to with different heap memory allocated for dll, and AP? --------------------------.cpp--------------------------------------------------- CIPCamDll::CIPCamDll() { memset(&m_t,0,sizeof(s)); session_id = 13; return; } ------------------------.cpp------------------------------------------ Re: problem in deleting dll class object.(scalar deleting destructor) Stuart Dootson6-Jul-09 21:19 Stuart Dootson 6-Jul-09 21:19  Make sure your exe and dll use the same variant (static/dynamic linking) of the C run-time library. Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p Turbo C 3.0 OS dev tuan11116-Jul-09 16:18 tuan1111 6-Jul-09 16:18  hi I use Turbo C3.0.How to:display file.bmp> 256 color VGA or with what is . I have hard drive 80G>Devide:C:\,D:\,E:\ How to write bootsec boot C:\,not format D,E How to write & load,init kernel with TC 3.0 ? How to:compile kernel with TC 3.0? ----------- How to:Draw window(GUI) have close button,resize,edit box with VGA Please, full code & guide:compile writing kernel Please, full code & guide: show file.bmp > 256 color on screen Using TC 3.0 Thanks Vietnam by;tuan1111 Re: Turbo C 3.0 and bmp &gt; 256 color & OS dev Adam Roderick J6-Jul-09 20:36 Adam Roderick J 6-Jul-09 20:36  Are u sure you can compile Windows kernel? And i dont think you can create the windows GUI directly with a VGA using tc3.0 Windows actually works on wrapper code written on VC++ over the lower layer driver and C++ code. Yes you can create those but it will take a lot of effort. i.e you have a write wrapper What does this mean? FISH7866-Jul-09 15:16 FISH786 6-Jul-09 15:16  What does this message mean in a debug mode? First-chance exception at 0x5d0c373e in DemoKey.exe: 0xC0000005: Access violation writing location 0x004456ec. I get this when I am exiting my application which is property sheet based? What have I not done before exiting the application or is it Normal? Thank in advance Re: What does this mean? messages6-Jul-09 18:20 messages 6-Jul-09 18:20  Did you use of pointers in your program? Re: What does this mean? FISH7866-Jul-09 19:20 FISH786 6-Jul-09 19:20  Yes I did. Re: What does this mean? Adam Roderick J6-Jul-09 19:46 Adam Roderick J 6-Jul-09 19:46  Use of invalid pointer. Pointer which is deleted most probably so once you delete a pointer intialize it to zero. Re: What does this mean? FISH7866-Jul-09 20:10 FISH786 6-Jul-09 20:10  I get this when I am exiting my application which is property sheet based? So why on Exit and not before? Re: What does this mean? Adam Roderick J6-Jul-09 20:32 Adam Roderick J 6-Jul-09 20:32  when exiting, it deleting some pointer which is already deleted. Check all the pointers. Re: What does this mean? Cedric Moonen6-Jul-09 20:25 Cedric Moonen 6-Jul-09 20:25  You are trying to write at an invalid memory location. On of the main cause of this problem is that you are accessing an object which has been released (but there could be other reasons too). If you want to find the cause of the problem and fix it, you'll need to use your debugger to track down the problem. Cédric Moonen Software developer Charting control [v2.0] OpenGL game tutorial in C++ convert BYTE array to BITMAPFILEHEADER transoft6-Jul-09 12:57 transoft 6-Jul-09 12:57  Hi I read a Byte array from a file. How can I convert this array to BITMAPFILEHEADER struct? Best regards, Re: convert BYTE array to BITMAPFILEHEADER «_Superman_»6-Jul-09 17:01 «_Superman_» 6-Jul-09 17:01  Assuming the contents you have read into the byte array will fit into a BITMAPFILEHEADER structure, BITMAPFILEHEADER* pFileHeader = reinterpret_cast<BITMAPFILEHEADER*>(byteArray); «_Superman_» I love work. It gives me something to do between weekends. Re: convert BYTE array to BITMAPFILEHEADER CPallini6-Jul-09 20:55 CPallini 6-Jul-09 20:55  First you have to make sure that file format confroms to the BITMAPFILEHEADER structure. If you've, for instance, raw bites of an image, then you've to programatically create an appropriate BITMAPFILEHEADER for the data. If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile. This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke [My articles] Use of TStringList problems MrKBA6-Jul-09 11:06 MrKBA 6-Jul-09 11:06  Hi, I need help please, i have to use TStringList object so if someone has an example how to use it and what are files should include them because i have some problems to do like this : TStringList *Liste = new TStringList; thank you for your help Re: Use of TStringList problems CPallini6-Jul-09 21:00 CPallini 6-Jul-09 21:00  Please, let me Google that for you ... If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile. This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke [My articles] Re: Use of TStringList problems MrKBA6-Jul-09 21:06 MrKBA 6-Jul-09 21:06  thank you for the search but i need examples in C++. Re: Use of TStringList problems CPallini6-Jul-09 21:52 CPallini 6-Jul-09 21:52  I can see C++ examples, in the results found. If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile. This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke [My articles] Re: Use of TStringList problems MrKBA6-Jul-09 22:14 MrKBA 6-Jul-09 22:14  ok , can you give me some of them ? pop up like windows media player minibar(when miniised). samvaidy6-Jul-09 10:02 samvaidy 6-Jul-09 10:02  can any body help me for, showing pop up window in taskbar.. like the way windows media players shows songs and visualisation in minibar(when its minimised).

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