64-bit

问题 I have a version of OpenCV 2.4.10 Library which was built for Intel X64 on Windows. How can I know if the CV_SSE2 is active? I do not have the code. I just have the libs ,DLLs and headers. Thanks 回答1: You can check if SSE2 is enabled with the function checkHardwareSupport like: #include <opencv2/opencv.hpp> #include <iostream> int main() { cv::setUseOptimized(true); // Turn on optimization (if it was disabled) // Get other build information //std::cout << cv::getBuildInformation(); // Check

问题 I have a very compute-intensive module in which I've added stack-tracing to be able to find specific problems. Although the application is allowed to run slower when this stack-tracing is enabled, it must not run 10 times slower. That's why I am not using the StackWalk routines from DBGHELP.DLL, but I walk the stack myself using the frame pointers (so I don't use the Frame Pointer Omission compiler option). In most cases, getting the call stack works correctly and is very fast, but in some

问题 For a long time I tried to use the LVM_GETITEMW message with LVIF_TEXT mask to get the text of a ListView. My program worked in 32 bit but not in 64 bit architecture. I discovered that the problem was at the LVITEM struct. Shortly, my question is which struct is the appropriate one for 64 bit and why. The struct I used as the LVITEMW struct had the following fields: ('mask', c_uint32), ('iItem', c_int32), ('iSubItem', c_int32), ('state', c_uint32), ('stateMask', c_uint32), ('pszText', c

问题 I'm trying to cross-compile a 64-bit executable on a 32-bit ubuntu system. This works up until linking, where it fails due to the lack of a 64-bit glib2 (libglib-2.0.a). If I were doing this on a 64-bit system, I would use getlibs to install a 32-bit glib2 into /usr/lib32. However, on a 32-bit machine getlibs doesn't seem to do the opposite-- install a 64-bit glib2 into /usr/lib64. My quesiton is: how do I manually do what getlibs should do, that is, install a 64-bit glib2 into /usr/lib64?

问题 Original post is here: http://mail.python.org/pipermail/python-win32/2010-December/011011.html I am using: OS: 64 bit Windows 7 Professional Python: python-2.7.1.amd64 Python win32 extensions: pywin32-214.win-amd64-py2.7 Py2exe: py2exe-0.6.9.win64-py2.7.amd64 I am trying to build icon overlay for Windows. It has worked fine on 32 bit Windows but not working on 64 bit Windows 7. Here are the Python modules I have created for testing: test_icon_overlay.py: ( http://mail.python.org/pipermail

问题 I am trying to get the 64-bit version of python up and running with a program I wrote. That program uses a gui I wrote in PyQt4. I cannot find a 64-bit version of PyQt4 and I get the following error when attempting to use the 32-bit of PyQt4 with the 64-bit version of python: S:\src>SimLauncher.py Forcing DISTUTILS_USE_SDK=1 Traceback (most recent call last): File "SimLauncher.py", line 42, in <module> from SwSim import SwSim File "SwSim.py", line 13, in <module> from PyQt4 import QtSql,QtGui

问题 I originally designed a win32 application on win7 32bits, with VC9.0. I recently upgraded to win7 64 bits, and tried to build+execute the previous application. Building runs fine (win32 application), but on runtime I get the error "[...] has exited with code -1073741701 (0xc000007b)." I guess this results of the loading of a 64bits version of an [intended] 32bits dll. Specific dependencies for this project are: SDL.lib SDLmain.lib SDL_ttf.lib opengl32.lib glu32.lib wininet.lib SDL and SDL_ttf

问题 I originally designed a win32 application on win7 32bits, with VC9.0. I recently upgraded to win7 64 bits, and tried to build+execute the previous application. Building runs fine (win32 application), but on runtime I get the error "[...] has exited with code -1073741701 (0xc000007b)." I guess this results of the loading of a 64bits version of an [intended] 32bits dll. Specific dependencies for this project are: SDL.lib SDLmain.lib SDL_ttf.lib opengl32.lib glu32.lib wininet.lib SDL and SDL_ttf

问题 I am using windows 7 home premium x64. I was wondering why exactly the IMAGE_MACHINETYPE field in the header of ntoskrnl in my system32 directory specifies x86. IDA will even let me disassemble it as native x86. Yet on my windows 7 pro machine, image_machinetype is x64. Am I just missing something.. or why is ntoskrnl 32 bit on a 64 bit OS? 回答1: My guess is on x64 architecture with a BIOS boot ntoskrnl.exe's main() entry point is called before the switch to long mode (64bit). Thus it would be

问题 I have a 64 bit VB.NET application and want to allocate a buffer > 2GB in size. In the following code both the "new" and the "ReDim" throw an "OverflowException." How can I allocate buffers > 2GB when these functions only accept signed 32 bit values? (Is this possible in C#?) Edit - I am running WinXP 64 with 4GB of RAM. Dim width As Long = 19005 Dim height As Long = 32768 Dim buffer() As Byte = New Byte((width * height * 4) - 1) {} Dim size As Long = (width * height * 4) - 1 ReDim buffer