What is Apientry?
APIENTRY is an alias for WINAPI. WINAPI itself is a definition for the type of calling convention used for windows API calls, the stdcall. Basically this is explaining to the compiler how to handle the stack and arguments when calling this function.
Does a DLL need DllMain?
DllMain is not mandatory. If you have some initialization code required to run when loading the dll, you should create a DllMain function, and treat the initialization there. Otherwise it’s not required.
How do I access Windows API?
To call a Windows API using the DllImport attribute Open a new Windows Application project by clicking New on the File menu, and then clicking Project. The New Project dialog box appears. Select Windows Application from the list of Visual Basic project templates. The new project is displayed.
What is WinAPI used for?
Alternatively referred to as the Windows API and WinAPI, Win32 is the main set of Microsoft Windows APIs used for developing 32-bit applications. These APIs are responsible for functions in the following categories: Administration and Management – Install, configure, and service applications or systems.
Is DllMain optional?
The DllMain function is an optional method of entry into a dynamic-link library (DLL). If the function is used, it is called by the system when processes and threads are initialized and terminated, or upon calls to LoadLibrary and FreeLibrary.
What are the parameters of WinMain?
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine, int nCmdShow); The four parameters are: hInstance is something called a “handle to an instance” or “handle to a module.” The operating system uses this value to identify the executable (EXE) when it is loaded in memory.
What is Lpctstr in C++ MSDN?
LPCTSTR is a pointer to a const TCHAR string, ( TCHAR being either a wide char or char depending on whether UNICODE is defined in your project) LPTSTR is a pointer to a (non-const) TCHAR string.
Should I use Win32 or Win64?
Running a 64-bit version of Windows means having better security and the ability to use more memory in your system. And, if you have a system that supports it, making the switch from 32-bit to 64-bit Windows is free—even if it does require a bit of work.
How is DllMain called?
What is DllEntryPoint?
The DllEntryPoint function is an optional method of entry into a dynamic-link library (DLL). If the function is used, it is called by the system when processes and threads are initialized and terminated, or upon calls to the LoadLibrary and FreeLibrary functions.