Data Type Cheat Sheet

You can find the full list of Windows data types in this page. So how to do we know corresponding Go type for C type X? There are typedef Y X; lines under each type definitions. What you need to do is just following the type definition until you find the basic data types like int, short, etc.

For example, if you wish to know what HMENU is, first find HMENU in the page. Here it is:

HMENU

A handle to a menu.

This type is declared in WinDef.h as follows:

typedef HANDLE HMENU;

So HMENU is same as HANDLE. But what is HANDLE? Again find in the page, this time for HANDLE:

HANDLE

...

typedef PVOID HANDLE;

Oh okay, find PVOID again:

PVOID

...

typedef void *PVOID;

Finally we got void*. So we can pass uintptr data as argument for API that accepts HMENU. Easy, but can be boring. So here I listed common C data types along with its corresponding Go type.

Basic Types

C	Go
int	int32
unsigned int	uint32
short	int16
unsigned short	uint16
long	int32
unsigned long	uint32
unsigned long long	uint64

Windows Specific Types

C	Go
INT	int32
UINT	uint32
BOOL	int32
BYTE	byte
CHAR	int8
DWORD	uint32
HANDLE	uintptr
H*(HBRUHSH, ...)	uintptr
HRESULT	int32

(WIP)