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go-win32api

Win32 API bindings for Go.

Bindings: All bindings are implemented through syscall, without using cgo.

Code Generation: Most of the code is generated from win32metadata, an official Microsoft publication that describes Win32 APIs.

API Coverage: The library includes frequently used APIs. Less common ones are omitted. You can generate your own code for these using the code generator available here.

Status

Currently, only the 64-bit architecture is supported and tested.

Installation

go get github.com/zzl/go-win32api/v2

import "github.com/zzl/go-win32api/v2/win32"

Unions

Union fields are mapped to accessor methods in Go. These methods share the same name as the fields and return pointers to allow assigning new values. Additionally, a value accessor method is generated for each field, following the naming pattern FieldName+Val.

Example:

Consider this C Union:

union QWord {
    UINT64 WholeValue;
    struct {
        UINT32 LowPart;
        UINT32 HighPart;
    } Parts;
};

Here's how you would access and set field values in Go:

var qw QWord
var whole uint64 = qw.WholeValueVal() // or whole = *qw.WholeValue()
var lowPart uint32 = qw.Parts().LowPart

// Setting values:
*qw.WholeValue() = 123
qw.Parts().LowPart = 4