This looks fun. I don't know any Polish but I've seen it around, and I used to be kinda fluent in win32 years ago. I'll have a go. [Edited updated best guess in brackets.]
spoiler
- LPCWSTR win32 string type [longpointer(32bit) to c style (null terminated) wide(UTF-16 characters) string]
- PSZCZYNA Polish
- WCSLEN win32 type for storing the length of a WCS (whatever that is)
- WCZESNY Polish
- LPCTSTR win32 string type [longpointer to c style T? string]
- BYDGOSZCZ Polish
- WSTRZAS Polish. Tricky because it contains STR, but feels much more Polish than win32.
- HGDIOBJ Polish? [win32 handle to a GDI object]
- DOWOD Polish
- HWINSTA win32. handle for a (static?) window maybe.
- DLUGOSC Polish
- LPCSTR win32 string type [longpointer to c style string]
- DWORD win32 (and any other c based 32bit OS) 4 byte integer type (or 8 bytes in 64 bit OSs) [remembered wrong here. in some systems DWORD changes size with architecture, but in Windows it was 32 bits in win16, and so it is forever]
- KAL Polish??
- LPWSTR win32 string type [longpointer to wide string]
- SZCZECIN Polish
- BLAD Polish
- PUHALF Win32 pointer to unsigned 1 byte integer (or 2 byte in 64bit)
- CHUJ Polish
- UHALF win32 unsigned 1 byte integer