Error @ Virtualallocex 6
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Date Apr 2008 Posts 49 Strange problem with VirtualAllocEx Salutations, I'm experiencing a strange problem with Visual C++ 2010 and Visual C++ 6.0. I have the following piece of code: Code: hWnd = FindWindow("Progman", NULL); if (NULL != hWnd) hWnd = FindWindowEx(hWnd, NULL, "SHELLDLL_DefView", NULL); if (NULL != hWnd) hWnd = FindWindowEx(hWnd, NULL, "SysListView32", NULL); if (NULL createremotethread msdn != hWnd) { DWORD pid; GetWindowThreadProcessId(hWnd, &pid); HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, 0, pid); RECT* ptritemrect; RECT itemrect; ptritemrect = (RECT*)VirtualAllocEx(hProcess, NULL, sizeof(RECT), MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE); if (ptritemrect == NULL) { DWORD error = GetLastError(); char cavalo[10]; sprintf(cavalo, "%i", error); MessageBox(w, cavalo, "", 0); } else { SendMessage(hWnd, LVM_GETITEMRECT, 0, (LPARAM)ptritemrect); DWORD copied = 0; ReadProcessMemory(hProcess, (void*)ptritemrect, (LPVOID)&itemrect, sizeof(itemrect), &copied); VirtualFreeEx(hProcess, ptritemrect, 0, MEM_RELEASE); } } The problem is this: I've tried to compile this code in Visual C++ 2010 (at Windows 7) and in Visual C++ 6 (at Windows XP Professional SP3). The code compiled with Visual C++ 6 works on both computers. But the code compiled with Visual C++ 2010 works only on Windows 7, not on Windows XP. On Windows XP, VirtualAllocEx doesn't work and ptritemrect gets the value NULL. The function GetLastError() accuses error code 6, which means "The handle is invalid.". I have no idea on why it works in Windows 7 and Windows XP when compiled with Visual C++ 2010, while it works
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about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges mem_reserve Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each c++ createremotethread other. Join them; it only takes a minute: Sign up Error code 487 (ERROR_INVALID_ADDRESS) when using VirtualAllocEX up vote 2 down vote favorite 1 I'm trying to use VirtualAllocEx(). When I set dwSize (the third parameter) to a http://cboard.cprogramming.com/windows-programming/134817-strange-problem-virtualallocex.html number larger than about 63 MB, it cause to generate error code 487 when I look at GetLastError(). However, it works with smaller sizes such as 4MB. Here is part of my code: VirtualAllocEx(peProcessInformation.hProcess, (LPVOID)(INH.OptionalHeader.ImageBase), dwImageSize, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE); In the case that I used a 4MB EXE file, the LPVOID return value is 0x00400000, but in other cases (20MB or bigger file) it returns 0x00000000. Is there a maximum value for the dwSize parameter? Is there http://stackoverflow.com/questions/21368429/error-code-487-error-invalid-address-when-using-virtualallocex any other solution for my problem, such as another function? winapi memory-management error-code share|improve this question edited Feb 10 '14 at 18:49 Zword 4,74821344 asked Jan 26 '14 at 19:56 mostafa88 377316 3 The third parameter you mean. Since you are requesting a particular start address the failure could be because your size request would cause the allocation to bump into something else that has already been allocated. –500 - Internal Server Error Jan 26 '14 at 20:55 1 Why do you want to allocate at that specific address? What are you trying to accomplish? You do realize that the PE base address is only a "preferred" address and not a guarantee, right? The OS sometimes has to avoid conflicts by re-basing and fixing up a module while loading it if the "preferred" address is already in use. –Remy Lebeau Jan 27 '14 at 9:07 2 To let the OS pick the allocation location, simply set the lpAddress parameter to NULL. –Remy Lebeau Jan 27 '14 at 16:03 1 Your bounty seems pointless unless you respond to the comments. It's quite easy for us to answer your question, once you ask it properly. You need to supply an SSCCE, and some good reason why you would expect to be able to reserve memory at an address that it would seem is already reserved. The reason w
»reddit.comwinternalscommentsWant to join? Log in or sign up in seconds.|Englishlimit my search to /r/winternalsuse the following search parameters https://www.reddit.com/r/winternals/comments/2j3jqe/virtualallocex_randomly_fails_with_errorcode_487/ to narrow your results:subreddit:subredditfind http://www.rohitab.com/discuss/topic/13734-inject-whole-program-in-another-process/ submissions in "subreddit"author:usernamefind submissions by "username"site:example.comfind submissions from "example.com"url:textsearch for "text" in urlselftext:textsearch for "text" in error @ self post contentsself:yes (or self:no)include (or exclude) self postsnsfw:yes (or nsfw:no)include (or exclude) results marked as NSFWe.g. subreddit:aww site:imgur.com dogsee the error @ virtualallocex search faq for details.advanced search: by author, subreddit...this post was submitted on 13 Oct 20142 points (100% upvoted)shortlink: remember mereset passwordloginSubmit a new linkSubmit a new text postwinternalssubscribeunsubscribe1,780 readers~1 user here nowInternal OS and kernel information. Programming, debugging, drivers, etc. a community for 8 yearsmessage the moderatorsMODERATORSdoug11235about moderation team »discussions in /r/winternals<>X2 points Telegram group about Windows internals https://telegram.me/joinchat/B53mSwnEh6GsH-NBDQ82xQ0 points § § § § §§ §
Primary: Sky Slate Blackcurrant Orchid Cranberry Strawberry Orange Banana Apple Chocolate Marble Black Custom Secondary: Sky Slate Blackcurrant Orchid Cranberry Strawberry Orange Banana Apple Chocolate Marble Black Custom Pattern: None Waves Noise Grid Shattered Paper Wood Rockface Leather Honey Vertical Triangles Maze rohitab.com - Forums Programming Programming Rules, Guidelines & FAQ View New Content Javascript Disabled Detected You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality. Inject whole program in another process Started By Guest_swemetal_* , Sep 29 2005 01:54 PM Please log in to reply 11 replies to this topic #1 Guest_swemetal_* Posted 29 September 2005 - 01:54 PM Guest_swemetal_* Guests Im stuck! This #¤"# wont work! Can anyone of you see what's wrong?#include