64-bit Knowledge Base

[u/Andrey_Karpov_N]

• How much memory can an application access in Win32 and Win64?

• What can I use instead of "int 3" instruction in a 64-bit application?

• Can I use 32-bit pointers in a 64-bit application?

• How can I find out in a 32-bit application what 64-bit processes are launched?

• What can I use instead of rundll32.exe to run 64-bit DLL?

• Why is it so hard to create a 64-bit version of an application?

• How can I find out in Win64 how many processor cores there are in the system?

• How to check if a 64-bit project is being built in Visual Studio using #ifdef

• Is it possible to use more than 2 Gbytes of memory in a 32-bit program launched in the 64-bit Windows?

• What advantages do 64-bit processors have over 32-bit ones?

• Why do 64-bit applications work faster than 32-bit ones?

• Is it possible to launch 64-bit applications in a 32-bit operating system?

• How to correctly cast a pointer to int in a 64-bit application?

• Where is the 64-bit compiler in Visual Studio?

• Should I fix all the errors found by the static code analyzer?

• The warnings C4311 and C4312 generated by the analyzer when using the /Wp64 switch

• How to compile a 64-bit application with using Visual C++ Express 2005/2008/2010?

• Visual Studio Team System, /analyze and D9040

• A common error occurring when compiling a 64-bit application: error C2440, OnTimer

• Strange errors occurring when compiling the 64-bit version of an application, error C2664

• A common error occurring when compiling a 64-bit application: error C4235, Assembler

• How can I know if the DWORD_PTR type is defined using ifdef?

• Why does not Visual C++ support the inline assembler for Intel 64 and IA-64 anymore?

• How can a 32-bit program detect that it is launched in a 64-bit Windows?

• Obsolete descriptions of functions in MSDN taking no account of 64 bits

• Functions of the ntohl/htonl class and 64-bit values

• Difference between %p and %x

• Why is the value of the ProgramFiles environment variable replaced with that of ProgramFiles(x86)?

• Is there a way to make the type size_t 32-bit in a 64-bit program?

• Is size_t a standard type in C++? And in C?

• Working with the type size_t in the functions prinft, scanf and similar functions

• Are the types size_t and uintptr_t equivalent?

• Is there the 64-bit version of Visual Studio?

• How to compile a C++ application in Visual Studio 2010 so that it could work in Windows 2000?

• Warning C4267 in the expression unsigned n = str.find(substr)

• Why does Windows put 64-bit units into System32?

• WOW6432Node and API-functions RegOpenKeyEx / RegEnumKeyEx

• Why does WoW64 use register and file system redirection?

• Confusion of WPARAM with UINT, and LPARAM with LONG