Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_RegisterApp - Register a win32 window class for SDL's use.
SYNOPSIS
#include <SDL3/SDL_main.h>
bool SDL_RegisterApp(const char *name, Uint32 style, void *hInst);
DESCRIPTION
This can be called to set the application window class at startup. It is safe to call this multiple
times, as long as every call is eventually paired with a call to SDL_UnregisterApp, but a second
registration attempt while a previous registration is still active will be ignored, other than to
increment a counter.
Most applications do not need to, and should not, call this directly; SDL will call it when initializing
the video subsystem.
FUNCTION PARAMETERS
name the window class name, in UTF-8 encoding. If NULL, SDL currently uses "SDL_app" but this isn't
guaranteed.
style the value to use in WNDCLASSEX::style. If name is NULL, SDL currently uses (CS_BYTEALIGNCLIENT |
CS_OWNDC) regardless of what is specified here.
hInst the HINSTANCE to use in WNDCLASSEX::hInstance. If zero, SDL will use GetModuleHandle(NULL)
instead.
RETURN VALUE
for more information.
AVAILABILITY
This function is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_RegisterApp(3)