[win32] WinMain

Depening on the unicode-ness of the compilation you can define either WinMain or wWinMain.

int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hInstPrev, PSTR cmdline, int cmdshow)

WINAPI

The calling convention

HINSTANCE hInst

handle to the instance (see Instance handle (HINSTANCE) )

HINSTANCE hInstPrev

has no meaning. It was used in 16-bit Windows, but is now always zero.

PSTR cmdline

command-line arguments as a string

int cmdshow

a flag how the window should be shown (see the possible show codes at MS docs )