Windows XML Manifest embedding in Rust

README.md

Feeling jealous of the Windows Rust developers that can embed a Windows manifest in their code with /MANIFESTINPUT? Why not embed the manifest directly into your source code using inline assembly?

main.rs

#![windows_subsystem = "windows"]

use std::arch::global_asm;
use std::ffi::c_void;
use std::ptr::null;

#[link(name = "kernel32")]
extern "system" {
    fn GetVersion() -> u32;
}

#[link(name = "user32")]
extern "system" {
    fn MessageBoxA(hwnd: *const c_void, lpText: *const u8, lpCaption: *const u8, uType: u32) -> i32;
}

fn main() {
    let version = unsafe { GetVersion() };
    let major_version = version & 0x0f;
    let minor_version = (version & 0xf0) >> 8;
    let build = if version < 0x80000000 { version >> 16 } else { 0 };
    let message = format!(
        "It’s raining 🐈s and 🐕s.\n\nI think this is Windows {}.{} ({}).\0",
        major_version, minor_version, build
    );
    unsafe {
        MessageBoxA(null(), message.as_ptr(), "Manifest Test\0".as_ptr(), 0x40);
    }
}

global_asm!(
    r#".section .rsrc$01,"dw""#,
    ".p2align 2",
    "2:",
    ".zero 14",
    ".short 1",
    ".long 24",
    ".long (3f - 2b) | 0x80000000",
    "3:",
    ".zero 14",
    ".short 1",
    ".long 1",
    ".long (4f - 2b) | 0x80000000",
    "4:",
    ".zero 14",
    ".short 1",
    ".long 1033",
    ".long 5f - 2b",
    "5:",
    ".long MANIFEST@imgrel",
    ".long 1207",
    ".zero 8",
    ".p2align 2",
);

#[no_mangle]
#[link_section = ".rsrc$02"]
#[used]
static mut MANIFEST: [u8; 1207] = *br#"<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3" manifestVersion="1.0">
    <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
        <application>
            <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
            <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
            <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
            <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>
        </application>
    </compatibility>
    <asmv3:application>
        <asmv3:windowsSettings>
            <activeCodePage xmlns="http://schemas.microsoft.com/SMI/2019/WindowsSettings">UTF-8</activeCodePage>
            <longPathAware xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">true</longPathAware>
        </asmv3:windowsSettings>
    </asmv3:application>
    <asmv3:trustInfo>
        <asmv3:security>
            <asmv3:requestedPrivileges>
                <asmv3:requestedExecutionLevel level="asInvoker" uiAccess="false"/>
            </asmv3:requestedPrivileges>
        </asmv3:security>
    </asmv3:trustInfo>
</assembly>"#;