MessageBoxW in Zig

messageboxw.zig

const std = @import("std");
const c = @cImport({
    @cInclude("windows.h");
});

pub fn main() !void {
    const message = "Hello, World!";
    const title = "Zig MessageBox";
    
    // Buffer for UTF-16 strings
    var message_w: [100]u16 = undefined;
    var title_w: [100]u16 = undefined;

    // Convert UTF-8 string to UTF-16LE
    const message_len = std.unicode.utf8ToUtf16Le(&message_w, message) catch {
        std.log.err("Error converting message string", .{});
        return;
    };
    const title_len = std.unicode.utf8ToUtf16Le(&title_w, title) catch {
        std.log.err("Error converting title string", .{});
        return;
    };

    // Null-terminate the UTF-16 strings
    message_w[message_len] = 0;
    title_w[title_len] = 0;

    // Calling MessageBoxW
    _ = c.MessageBoxW(null, message_w[0..message_len :0], title_w[0..title_len :0], c.MB_OK);
}