Sorry, I typed ZwResizeSection in google but I didn't get any results !! please could you check the word orthography thank you

for example when I resize the file from 4KB to 8KB, I expect that MapViewOfFile() return a buffer size of 8KB but I get only 4KB !!!

Yes, I did all that. But when I call mapViewOfFile() the secon time the whole size of the maapped file !!!

Hi all, I created a map file like this : HANDLE hMap=CreateFileMapping(hFile, NULL, _dwProtect, 0, _dwSize, _strMapName); but now I need to increase its size and create a new view on it!! does someone know how to to that the right way?? Thank you so much :)

AfxIsValidAddress worked fine for me. Thanks a lots :)

that s the problem!!! it seems that the size of the file is larger than the memory buffer returned. I don't understand why :(

no, _dwNbBytes == 0 ko mean kb == 1024 bytes thx

Hey, does someone know how to check if a pointer is valid (was allocated by the application and can be used without problem) or no?

Here it is: LPVOID data = MapViewOfFile(m_hMap, _dwDesiredAccess, 0, _dwOffset, _dwNbBytes); I need to know the size of the data buffer. I call this code after resizing a map file with 8ko but I can acess only the first 4ko :( could someone help me?!!

No :( it doesn't worked for me !!! The _msize function returns the size, in bytes, of the memory block allocated by a call to calloc, malloc, or realloc. Thank you anyway

Hi, Is there any way to get the size of an allocated memory buffer knowing only the its address? Thank you all :)